WO2021246014A1 - Vehicle - Google Patents

Vehicle Download PDF

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Publication number
WO2021246014A1
WO2021246014A1 PCT/JP2021/009094 JP2021009094W WO2021246014A1 WO 2021246014 A1 WO2021246014 A1 WO 2021246014A1 JP 2021009094 W JP2021009094 W JP 2021009094W WO 2021246014 A1 WO2021246014 A1 WO 2021246014A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
sound
microphone
unit
speaker
Prior art date
Application number
PCT/JP2021/009094
Other languages
French (fr)
Japanese (ja)
Inventor
晃平 野口
理基 伊東
Original Assignee
本田技研工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 本田技研工業株式会社 filed Critical 本田技研工業株式会社
Publication of WO2021246014A1 publication Critical patent/WO2021246014A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones

Definitions

  • the present invention relates to a vehicle.
  • Patent Document 1 Conventionally, a technique for adjusting the audibility of sounds around a vehicle is known (see, for example, Patent Document 1).
  • noise around the vehicle is collected by a microphone, and a sound having a phase opposite to the noise is generated from a speaker in the helmet, so that the noise cannot be heard.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle capable of easily hearing environmental sounds even when wearing a helmet.
  • the vehicle is a vehicle equipped with a speaker array composed of a plurality of speakers, and the localization of the virtual sound source can be changed by the speaker array.
  • the vehicle is a microphone that collects sounds around the vehicle.
  • the speaker array is characterized in that the sound information collected by the microphone is localized and reproduced in the direction in which the sound is generated.
  • the speaker array may generate a virtual sound source in a specific direction or increase the volume of the virtual sound source only under predetermined conditions under which the occupant should pay attention to the sound around the vehicle. good.
  • the predetermined condition is when it is detected that another vehicle is approaching, and the specific direction may be a direction in which the other vehicle exists.
  • the detection that the other vehicle is approaching may be performed when the sound pressure in a specific frequency band of the sound information collected by the microphone increases within a predetermined time.
  • the detection that the other vehicle is approaching may be performed when the sound pressure in a specific frequency band of the sound information collected by the microphone exceeds a predetermined threshold value.
  • the predetermined condition is when the operation of the vehicle is detected, and the specific direction may be a direction related to the operation.
  • the operation is a turn signal operation
  • the specific direction may be the right side or the left side of the vehicle.
  • the operation is a brake operation, and the specific direction may be behind the vehicle.
  • the operation is a throttle operation, and the specific direction may be in front of the vehicle.
  • the vehicle is a vehicle equipped with a speaker array composed of a plurality of speakers, and the localization of a virtual sound source can be changed by the speaker array.
  • the vehicle is a microphone that collects sounds around the vehicle.
  • the speaker array is provided with, and the speaker array localizes and reproduces the sound information collected by the microphone in the direction in which the sound is generated. According to this configuration, the ambient sound can be easily heard even when the helmet is worn by reproducing the surrounding sound from the generation direction by the virtual sound source.
  • the speaker array may generate a virtual sound source in a specific direction or increase the volume of the virtual sound source only under predetermined conditions under which the occupant should pay attention to the sound around the vehicle. good. According to this configuration, energy can be saved as compared with the case where a virtual sound source is constantly generated or the volume of the virtual sound source is increased.
  • the predetermined condition is when it is detected that another vehicle is approaching, and the specific direction may be a direction in which the other vehicle exists. According to this configuration, it is possible to easily recognize from which direction other vehicles are approaching.
  • the detection that the other vehicle is approaching may be performed when the sound pressure in a specific frequency band of the sound information collected by the microphone increases within a predetermined time. According to this configuration, it is possible to detect that another vehicle is approaching without using a detection means other than a microphone.
  • the detection that the other vehicle is approaching may be performed when the sound pressure in a specific frequency band of the sound information collected by the microphone exceeds a predetermined threshold value. According to this configuration, it is possible to detect that another vehicle is approaching without using a detection means other than a microphone.
  • the predetermined condition is when the operation of the vehicle is detected, and the specific direction may be a direction related to the operation. According to this configuration, it is possible to easily hear the sound in the direction in which the vehicle moves by operation.
  • the operation is a turn signal operation
  • the specific direction may be the right side or the left side of the vehicle. According to this configuration, when the turn signal operation is detected, it is possible to easily hear the right or left sound in the direction in which the vehicle is expected to move due to the turn signal operation.
  • the operation is a brake operation, and the specific direction may be behind the vehicle. According to this configuration, when the brake operation is detected, it is possible to easily hear the rear sound that is assumed that the vehicle moves relatively due to the brake operation.
  • the operation is a throttle operation, and the specific direction may be in front of the vehicle. According to this configuration, when the throttle operation is detected, it is possible to easily hear the sound in front of the vehicle, which is assumed to move due to the throttle operation.
  • FIG. 1 is a left side view of a motorcycle according to an embodiment of the present invention.
  • FIG. 2 is a plan view of the motorcycle as viewed from above.
  • FIG. 3 is a view of the front part of the motorcycle as viewed from the rear side.
  • FIG. 4 is a block configuration diagram showing the configuration of the control device.
  • FIG. 5 is a diagram showing a configuration of a sound output system of a motorcycle.
  • FIG. 6 is a schematic diagram of a motorcycle traveling on a road.
  • FIG. 7 is a diagram showing a frequency spectrum of ambient sound of a motorcycle.
  • FIG. 8 is a diagram showing a frequency spectrum of ambient sound determined by sound image localization processing at the time of approach.
  • FIG. 9 is a flowchart showing the operation of the control unit.
  • FIG. 1 is a left side view of the motorcycle 1 according to the embodiment of the present invention.
  • FIG. 2 is a plan view of the motorcycle 1 as viewed from above.
  • FIG. 3 is a view of the front part of the motorcycle 1 as viewed from the rear side.
  • the engine 11 as a power unit is supported by the vehicle body frame 10
  • the steering system 12 that supports the front wheels 2 so as to be steerable is supported by the front end portion of the vehicle body frame 10 so as to be steerable to the left and right, and supports the rear wheels 3.
  • the swing arm 13 is a vehicle provided at the rear of the vehicle body frame 10.
  • the rear wheel 3 is a drive wheel driven by the engine 11.
  • the motorcycle 1 is a saddle-riding vehicle in which an occupant sits so as to straddle the seat 14, and the seat 14 is provided above the rear portion of the vehicle body frame 10.
  • the power unit may be an electric motor.
  • the seat 14 is supported from below by the vehicle body frame 10 and is arranged between the front wheels 2 and the rear wheels 3 in the front-rear direction of the vehicle.
  • the seat 14 is arranged above the rear of the engine 11.
  • the front wheel 2 is supported by the lower end portion of the steering system 12.
  • a steering wheel 20 is provided at the upper end of the steering system 12.
  • the handle 20 is arranged in front of and above the seat 14.
  • the handle 20 is supported by the vehicle body front portion 10a located in front of the seat 14 in the vehicle body, and is steered to the left and right with respect to the vehicle body front portion 10a.
  • the handle 20 rotates about the steering shaft 20a arranged on the front portion 10a of the vehicle body as a rotation center.
  • the steering shaft 20a is located at the center of the width of the motorcycle 1 like the front wheels 2.
  • the steering shaft 20a is a part of the steering system 12, and is tilted backward with respect to the vertical direction when viewed from the side of the vehicle.
  • the steering wheel 20 has a rod-shaped handle portion 20b extending to the left and right outside with respect to the steering shaft 20a at the center of the vehicle width, and a pair of left and right grip portions 20c provided at the outer ends of the handle portion 20b in the vehicle width direction. Be prepared. The occupant seated on the seat 14 grips the left and right grip portions 20c with his left and right hands, respectively, and steers the handle 20.
  • the motorcycle 1 includes a vehicle body cover 22 that covers a vehicle body such as a vehicle body frame 10.
  • the front portion of the vehicle body cover 22 covers the front cover 23 that covers the upper portion of the steering system 12 and the front end portion of the vehicle body frame 10 from the front and sides, and the vehicle body between the handle 20 and the seat 14 from above and from the sides.
  • a center cover 24 is provided.
  • the vehicle body front portion 10a is composed of a vehicle body frame 10, a vehicle body cover 22, and the like.
  • the motorcycle 1 is provided with a windscreen 25 extending upward with respect to the front cover 23 in front of the handle 20.
  • the motorcycle 1 includes a pair of left and right rearview mirrors 26 extending outward in the vehicle width direction from the left and right side portions of the front cover 23.
  • the left and right rear-view mirrors 26 are arranged outside the windscreen 25 in the vehicle width direction.
  • the rearview mirror 26 is located near the lower end of the windscreen 25.
  • the motorcycle 1 includes a front fender 28 that covers the front wheel 2 from above.
  • the front fender 28 is supported by the lower part of the steering system 12.
  • the motorcycle 1 is provided with a headlight 29a and a pair of left and right turn signals 29b as lighting equipment.
  • the headlight 29a is provided at the front end portion of the front cover 23, and the blinker 29b is provided at the front surface of the left and right rear-view mirrors 26, respectively.
  • the motorcycle 1 is provided with a display unit 30 for displaying the state of the motorcycle 1 behind the windscreen 25.
  • the display unit 30 is arranged in front of and above the handle 20.
  • the display unit 30 is a meter unit that displays information about the motorcycle 1 such as the vehicle speed of the motorcycle 1.
  • the display unit 30 includes instruments 31 and 32 for displaying information (vehicle speed, engine speed, etc.) related to the motorcycle 1, and a monitor 33 for displaying various information.
  • the monitor 33 is provided with a known display panel such as a liquid crystal panel, and displays various information including information about the motorcycle 1 toward the occupant side on the rear upper side.
  • the motorcycle 1 has a pair of steering wheel side operation units 36 provided on the left and right handlebars 20b as operation units 35 for the occupant to operate each part of the motorcycle 1, and the center of the vehicle width behind the display unit 30. It is provided with a central operation unit 37 arranged in.
  • the operation unit 35 is arranged in front of the seat 14.
  • the motorcycle 1 includes a plate-shaped operation portion support portion 38 extending forward from the front end portion 24a of the central portion in the vehicle width direction of the center cover 24.
  • the operation unit support portion 38 extends forward from the center cover 24 through above the handle 20 and is connected to the rear end portion of the display unit 30.
  • the operation unit support portion 38 is located above the central portion of the steering wheel 20 in the vehicle width direction and covers the steering shaft 20a from above.
  • the operation unit support unit 38 constitutes a part of the vehicle body cover 22.
  • the central operation unit 37 is provided on the operation unit support unit 38 and is located between the center cover 24 and the display unit 30.
  • the central operation unit 37 includes a pressing operation unit 37a composed of a plurality of operation buttons and a stick-shaped operator 37b protruding upward from the operation unit support unit 38.
  • the operator 37b is arranged in front of the pressing operation unit 37a and projects upward from the pressing operation unit 37a.
  • the operator 37b is located at the center of the vehicle width. According to the operator 37b, each part of the motorcycle 1 can be operated by the tilting operation of tilting the operator 37b in an arbitrary direction and the rotation operation of rotating the operator 37b around the axis of the operator 37b. ..
  • the motorcycle 1 is provided with a microphone 50 for collecting sound on the upper part of the rear-view mirror 26.
  • the microphone 50 includes a first microphone 51 and a second microphone 52.
  • the first microphone 51 is arranged on the upper surface of the rear-view mirror 26 on the left side.
  • the second microphone 52 is arranged on the upper surface of the rear-view mirror 26 on the right side.
  • the microphone 50 collects ambient environmental sounds by a stereophonic method by the first microphone 51 and the second microphone 52.
  • the motorcycle 1 is provided with instruments 31 and 32 of the display unit 30 and a speaker array 60 above the monitor 33.
  • the speaker array 60 By arranging the speaker array 60 above the instruments 31 and 32 of the display unit 30 and the monitor 33, the speaker array 60 can be arranged closer to the driver's ear and the attenuation of sound due to the steering wheel or the like can be reduced. ..
  • the speaker array 60 is a speaker unit equipped with a plurality of speakers arranged in the width direction (left-right direction) of the motorcycle 1 and expanding the area in which the driver (occupant) and the like can hear in the width direction.
  • the first speaker 61, the second speaker 62, the third speaker 63, the fourth speaker 64, the fifth speaker 65, the sixth speaker 66, the seventh speaker 67, and the eighth speaker 68 are configured from the left when viewed from the driver. Is arranged in a row.
  • the sound output from any of the first speaker 61 to the eighth speaker 68 can be heard by the driver or the passenger. It can be delivered to the ears of others.
  • the case where the number of speakers included in the speaker array 60 is eight will be described, but the number of speakers is arbitrary and can be changed as appropriate.
  • FIG. 4 is a block configuration diagram showing the configuration of the control device 100.
  • the configuration of the control device 100 will be described with reference to FIG.
  • the control device 100 includes a vehicle information input unit 101, a DSP 102, and a control unit 110.
  • DSP is a notation that abbreviates Digital Signal Processor.
  • the vehicle information input unit 101 functions as a connection interface with the motorcycle (hereinafter, also referred to as "own vehicle") 1, and vehicle information is input from the own vehicle 1.
  • the vehicle information includes the sensor data of the vehicle speed detection unit 71, the sensor data of the throttle detection unit 72, the sensor data of the turn signal switch detection unit 73, and the sensor data of the brake switch detection unit 74.
  • the vehicle speed detection unit 71 is a sensor that detects the vehicle speed of the own vehicle 1.
  • the vehicle speed detection unit 71 detects the vehicle speed of the own vehicle 1 and outputs sensor data indicating the vehicle speed of the own vehicle 1 to the control device 100.
  • the throttle detection unit 72 is a sensor that detects the throttle operation.
  • the throttle detection unit 72 outputs sensor data indicating throttle operation to the control device 100.
  • the turn signal switch detection unit 73 is a sensor that detects the operation of the turn signal switch of the operation unit 35.
  • the turn signal switch detection unit 73 outputs sensor data indicating a left direction instruction operation and a right direction instruction operation by the operation of the turn signal switch of the operation unit 35 to the control device 100.
  • the brake switch detection unit 74 is a sensor that detects the brake operation.
  • the brake switch detection unit 74 outputs sensor data indicating the brake operation to the control device 100.
  • the sound input unit 140 and the sound output unit 150 are connected to the DSP 102.
  • the sound input unit 140 includes a microphone 50, converts the collected ambient sound into an analog sound signal, and outputs the sound to the DSP 102.
  • the DSP 102 converts the sound signal input from the sound input unit 140 into a digital signal and outputs it to the control unit 110.
  • the sound input unit 140 uses a microphone 50 mounted on the own vehicle 1 to collect sounds around the own vehicle 1 by a stereophonic method.
  • the DSP 102 generates a sound signal based on the sound information processed by the control unit 110.
  • the generated sound signal is an analog signal, and a plurality of channels are generated.
  • the DSP 102 outputs the generated analog sound signal to the sound output unit 150.
  • FIG. 5 is a diagram showing the configuration of the sound output system of 1 of the motorcycle. As shown in FIG. 5, the sound output system is mounted on the controller board 145. A DSP 102 and a signal amplification unit 160 are mounted on the controller board 145. In addition to this, the controller board 145 is equipped with a power supply unit that supplies battery power to the DSP 102. The illustration of the power supply unit is omitted.
  • the signal amplification unit 160 includes a first AMP161, a second AMP162, a third AMP163, a fourth AMP164, a fifth AMP165, a sixth AMP166, a seventh AMP167, and an eighth AMP168.
  • AMP is a notation that omits Amplifier.
  • the first AMP 161 is connected to the first speaker 61.
  • the second AMP 162 is connected to the second speaker 62.
  • the first AMP 161 amplifies the input sound signal and outputs it to the first speaker 61.
  • the second AMP 162 amplifies the input sound signal and outputs it to the second speaker 62.
  • the third AMP 163 is connected to the third speaker 63.
  • the 4th AMP 164 is connected to the 4th speaker 64.
  • the fifth AMP 165 is connected to the fifth speaker 65.
  • the sixth AMP 166 is connected to the sixth speaker 66.
  • the third AMP 163 amplifies the input sound signal and outputs it to the third speaker 63.
  • the fourth AMP 164 amplifies the input sound signal and outputs it to the second speaker 62.
  • the fifth AMP 165 amplifies the input sound signal and outputs it to the fifth speaker 65.
  • the sixth AMP 166 amplifies the input sound signal and outputs it to the sixth speaker 66.
  • the 7th AMP 167 is connected to the 7th speaker 67.
  • the eighth AMP 168 is connected to the eighth speaker 68.
  • the 7th AMP 167 amplifies the input sound signal and outputs it to the 7th speaker 67.
  • the eighth AMP 168 amplifies the input sound signal and outputs it to the second speaker 62.
  • the control unit 110 of the control device 100 is a computer device including a storage unit 120 and a processor 130.
  • the storage unit 120 includes a memory such as a ROM or a RAM.
  • ROM is a notation that abbreviates Read Only Memory.
  • RAM is a notation that omits Random access memory.
  • the storage unit 120 stores the control program 121 executed by the processor 130.
  • the control program 121 includes an application program. Further, the storage unit 120 stores the data processed by the processor 130 when the computer program is executed and the data of the processing result.
  • the processor 130 is composed of a CPU, a microcontroller, a DSP, and the like, and controls each part of the control unit 110 by executing a program.
  • CPU is a notation that omits Central Processing Unit.
  • the processor 130 may be a SoC in which the processor 130 and the storage unit 120 are integrated. SoC is a notation that omits System-on-a-chip.
  • the control unit 110 realizes various functional configurations by the processor 130 executing the control program 121 stored in the storage unit 120.
  • the control unit 110 of the present embodiment includes an application control unit 131 and a sound image localization processing unit 132 as functional configurations. Further, the control unit 110 is connected to the vehicle information input unit 101 and the DSP 102.
  • FIG. 6 is a schematic diagram when the motorcycle 1 travels on the road.
  • FIG. 7 is a diagram showing a frequency spectrum of ambient sound of the motorcycle 1.
  • the own vehicle (motorcycle) 1 of the present embodiment travels on the road
  • the own vehicle wind noise N1 of the own vehicle 1 is observed.
  • another vehicle exhaust sound N2, another vehicle road noise sound N3, another vehicle wind noise N4, and the like of another vehicle (other vehicle other than own vehicle 1) 200 are observed.
  • the frequency spectrum which is the analysis result by the fast Fourier transform of these sounds N1 to N4
  • the exhaust sound N2 of another vehicle is observed in a higher frequency band than the wind noise N1 of the own vehicle.
  • the road noise sound N3 of another vehicle is observed in a higher frequency band than the exhaust sound N2 of another vehicle.
  • the wind noise N4 of another vehicle is observed in a higher frequency band than the road noise noise N3 of another vehicle. That is, the sound N1 of the own vehicle 1 and the sounds N2 to N4 of the other vehicle 200 can be distinguished from each other with a predetermined frequency as a boundary.
  • the helmet attenuates the amplitude of the surrounding sound, so that the sound pressure proportional to the amplitude is attenuated and reaches the driver's ear. That is, when the helmet is not worn, each sound N1 to N4 is heard as a sound having an amplitude shown by a broken line, but when the helmet is worn, each sound N1 to N4 is heard as a sound having an amplitude shown by a solid line. Therefore, there is a problem that it is difficult for the driver wearing a helmet to hear the environmental sounds such as the sounds N2 to N4 of the other vehicle 200.
  • the control unit 110 of the present embodiment controls the sound image (virtual sound source) to be localized in the direction in which the sound is generated and reproduced by the speaker array 60 based on the sound information collected by the microphone 50.
  • the application control unit 131 of the control unit 110 determines whether or not the driver satisfies a state of a predetermined condition for paying attention to the sound around the own vehicle 1, and if the predetermined condition is satisfied, the sound image localization. Control is performed to issue an instruction for sound image localization processing to the processing unit 132.
  • the application control unit 131 of the present embodiment determines whether or not the other vehicle 200 is in the approaching state as whether or not the state of the predetermined condition is satisfied. Further, the application control unit 131 determines whether or not the driving behavior change operation of the own vehicle 1 has been performed as whether or not the state of the predetermined condition is satisfied.
  • the application control unit 131 monitors and controls the sound information of the stereophonic system collected by the microphone 50. That is, the application control unit 131 monitors and controls the sound information output from the sound input unit 140 to the control unit 110 via the DSP 102. The application control unit 131 monitors whether or not the sound pressure in the preset frequency band satisfies a predetermined condition for the sound information of the stereophonic system collected by the microphone 50.
  • the application control unit 131 monitors the sound pressure in the frequency band based on the other vehicle exhaust sound N2, the other vehicle road noise sound N3, and the other vehicle wind noise N4. That is, each time the sound information of the sounds N2 to N4 is input for each of the frequency bands preset based on the sounds N2 to N4, the application control unit 131 sets the sound pressure at the time of input and before a predetermined time. The difference value of is calculated, and it is determined whether or not this difference value exceeds a preset threshold value. When the application control unit 131 determines that any of the difference values exceeds a preset threshold value, for example, as shown in FIG. 6, the other vehicle 200 is moving from the state of the broken line to the state shown by the solid line.
  • the other vehicle 200 is in a state of approaching the own vehicle 1, and an instruction for sound image localization processing at the time of approach is issued to the sound image localization processing unit 132.
  • an instruction for sound image localization processing at the time of approach is issued to the sound image localization processing unit 132. It should be noted that, instead of the case where the difference value of any of the sounds N2 to N4 exceeds the threshold value, only when all the difference values of the sounds N2 to N4 exceed the threshold value, the sound image localization processing unit 132 is approached. An instruction for sound image localization processing may be issued.
  • the application control unit 131 of the present embodiment presets the sound pressure for each of the preset frequency bands based on the sounds N2 to N4 each time the sound information of the sounds N2 to N4 is input. It is determined whether or not the threshold value is exceeded.
  • the application control unit 131 determines that the sound pressure exceeds a preset threshold value, for example, as shown by the solid line in FIG. 6, the other vehicle 200 is in a state of approaching the own vehicle 1.
  • the sound image localization processing unit 132 is instructed to perform sound image localization processing when approaching.
  • the threshold value can be set for each sound N2 to N4 based on the value between the solid line and the broken line shown in FIG. 7.
  • the application control unit 131 has sensor data of the throttle detection unit 72, the turn signal switch detection unit 73, and the brake switch detection unit 74 in order to determine whether or not the driving behavior change operation of the own vehicle 1 has been performed. To monitor. When the sensor data indicating that the throttle is being operated by the throttle detection unit 72 is input, the application control unit 131 issues an instruction to the sound image localization processing unit 132 for the sound image localization processing at the time of the throttle operation.
  • the application control unit 131 causes the sound image localization processing unit 132 to perform sound image localization processing during the left direction instruction operation. Give instructions. Further, when the sensor data indicating that the right direction instruction operation is performed is input by the turn signal switch detection unit 73, the application control unit 131 causes the sound image localization processing unit 132 to perform sound image localization processing during the right direction instruction operation. Give instructions.
  • the application control unit 131 issues an instruction to the sound image localization processing unit 132 for the sound image localization processing at the time of the brake operation.
  • the sound image localization processing unit 132 controls the DSP 102 and the signal amplification unit 160 to perform sound image localization processing for determining the position of the sound image and reproducing and outputting the sound image.
  • a sound image is a virtual sound source, and localization means determining a position. That is, it means that the driver or the like who hears the sound output from the speaker array 60 is made to perceive as if the sound source exists at the position determined by the sound image localization processing unit 132.
  • the sound image localization processing unit 132 changes the localization position of the sound image by controlling the volume of the sound output to the first speaker 61 to the eighth speaker 68 included in the sound output unit 150.
  • the sound image localization processing unit 132 of the present embodiment generates a sound image (virtual sound source) in a specific direction only when a predetermined condition for the driver or the like to pay attention to the sound around the own vehicle 1 is satisfied. Or control to increase the volume of the sound image (virtual sound source).
  • the speaker array 60 controls to reproduce the sound image only when a predetermined condition is satisfied, so that energy saving can be achieved.
  • the sound image localization processing unit 132 specifies the direction of the other vehicle 200 and the volume of the sounds N2 to N4 of the other vehicle 200 based on the sound information of the stereophonic system collected by the microphone 50 that is sequentially input.
  • the direction of the other vehicle 200 and the volume of the sounds N2 to N4 of the other vehicle are the difference in the arrival times of the sounds N1 to N4 to the first microphone 51 and the second microphone 52, the frequency change based on the vehicle speed of the own vehicle 1, and the like. It can be specified based on.
  • This specific processing may be performed by arithmetic processing, or is a collection of microphones 50 that are sequentially input by referring to the map information that stores the relationship between the vehicle speed of the own vehicle 1 and the frequencies and amplitudes of the sounds N1 to N4 in advance.
  • the direction of the other vehicle 200 and the volume of the sounds N2 to N4 of the other vehicle 200 may be specified based on the sound information of the three-dimensional sound system.
  • FIG. 8 is a diagram showing the frequency spectra of ambient sounds N2 to N4 determined by the sound image localization process at the time of approach.
  • the sound image localization processing unit 132 determines the direction of the specified other vehicle 200 as the direction in which the sound image for reproducing the sounds N2 to N4 is localized.
  • the volume of the sound image of the sounds N2 to N4 is determined to be an amplified volume so that the driver can hear the sound in the state of wearing a helmet as if he / she is not wearing a helmet.
  • the volume of the own vehicle wind noise N1 is not amplified.
  • the sound image localization processing unit 132 receives an instruction for sound image localization processing at the time of throttle operation, the volume in front of the own vehicle 1 is increased based on the sound information of the stereophonic method of the microphone 50 which is sequentially input.
  • the volume of the sound image is determined to be an amplified volume so that the sound image can be heard loudly, and the direction of localization of the sound image is determined to be in front of the own vehicle 1.
  • the sound image localization processing unit 132 receives an instruction for sound image localization processing at the time of the left direction instruction operation, the sound image localization processing unit 132 is on the left side of the own vehicle 1 based on the sound information of the stereophonic method of the microphone 50 which is sequentially input.
  • the volume of the sound image is determined to be an amplified volume so that the volume of the sound image can be heard loudly, and the direction of localization of the sound image is determined to the left of the own vehicle 1.
  • the sound image localization processing unit 132 receives the instruction of the sound image localization processing at the time of the right direction instruction operation, the sound image localization processing unit 132 is to the right of the own vehicle 1 based on the sound information of the stereophonic method of the microphone 50 which is sequentially input.
  • the volume of the sound image is determined to be an amplified volume so that the volume of the sound image can be heard loudly, and the direction of localization of the sound image is determined to the right of the own vehicle 1.
  • the sound image localization processing unit 132 receives an instruction for sound image localization processing at the time of brake operation, the volume behind the own vehicle 1 is increased based on the sound information of the stereophonic method of the microphone 50 which is sequentially input.
  • the volume of the sound image is determined to be an amplified volume so that the sound image can be heard loudly, and the direction of localization of the sound image is determined to be behind the own vehicle 1.
  • the speaker array 60 controls the signal amplification unit 160 and the DSP 102 so as to have the determined volume and the direction in which the sound image is localized. This controls the microphone 50 to localize and reproduce the sound image in the direction in which the collected sound is generated.
  • FIG. 9 is a flowchart showing the operation of the control unit 110.
  • the operation of the control unit 110 will be described with reference to FIG.
  • the control unit 110 can start the control process by receiving, for example, the input of the execution of the sound image localization process of the environmental sound by the operation unit 35.
  • the control unit 110 monitors the sound information input from the microphone 50 (step S1).
  • the control unit 110 determines the presence or absence of an approaching vehicle based on the sound information input from the microphone 50 (step S2).
  • step S4 determines that the other vehicle 200 is approaching the own vehicle 1 (step S2 / YES)
  • the control unit 110 executes the sound source amplification process in the localization direction (step S4).
  • step S4 determines whether or not a driving behavior change operation is input (step S4).
  • step S4 determines that there is no input for the change operation of the driving behavior (step S4 / NO)
  • step S4 shifts to the process of step S1.
  • control unit 110 executes the sound source amplification process in the localization direction (step S4), when detecting a nearby vehicle, the control unit 110 determines the direction of the other vehicle 200 as the direction in which the sound image is localized, and the other. The volume of the sound image of the sound N2 to N4 of the vehicle 200 is determined to be the amplified volume. Further, when the control unit 110 executes the sound source amplification process in the localization direction (step S4), when the throttle operation is detected, the control unit 110 controls the sound image so that the volume in front of the own vehicle 1 can be heard loudly. The amplified volume is determined, and the localization direction is determined in front of the own vehicle 1.
  • step S4 when the control unit 110 executes the sound source amplification process in the localization direction (step S4), when the left direction instruction operation is detected, the control unit 110 can hear the volume on the left side of the own vehicle 1 loudly.
  • the amplified volume is determined, and the localization direction is determined to the left of the own vehicle 1.
  • the control unit 110 executes the sound source amplification process in the localization direction (step S4), when the right direction instruction operation is detected, the control unit 110 so that the volume on the right side of the own vehicle 1 can be heard loudly.
  • the amplified volume is determined, and the localization direction is determined to the right of the own vehicle 1.
  • control unit 110 executes the sound source amplification process in the localization direction (step S4), when the brake operation is detected, the control unit 110 controls the sound image so that the volume behind the own vehicle 1 can be heard loudly.
  • the amplified volume is determined, and the localization direction is determined behind the own vehicle 1.
  • control unit 110 controls the DSP 102 and the signal amplification unit 160 so as to have the volume determined in step S4 and the localization position, and outputs the sound image at the target localization position. (Step S5).
  • the control unit 110 shifts to the process of step S1.
  • the own vehicle (motorcycle) 1 when the own vehicle (motorcycle) 1 travels, the ambient sound is collected by the microphone 50 of the own vehicle 1. At this time, the own vehicle 1 determines whether or not the other vehicle 200 is approaching based on the collected surrounding sounds.
  • the helmet when the helmet is worn, the sound reaches the ears of the driver or the like in a state where the sound pressure is attenuated, so that even if there is a change in the environmental sound, the change in the sound pressure tends to be small. Therefore, it is difficult for the driver to notice that the other vehicle 200 has approached based on the environmental sound.
  • the sound source localization process when the other vehicle 200 approaches, the sound source localization process is performed, the sound image is localized in the direction of the other vehicle 200, and the sounds N2 to N4 of the other vehicle 200 are produced. It is amplified and reproduced greatly. Therefore, even for a driver or the like wearing a helmet, it is easy to recognize that the other vehicle 200 is approaching based on the environmental sound.
  • the motorcycle 1 of the present embodiment when the driver performs a change operation of the driving behavior of the own vehicle 1, the environmental sound in the direction in which the own vehicle 1 is expected to move due to the change operation is greatly amplified. Will be done. Therefore, even when the driver or the like wears a helmet, it is easy to hear the environmental sound in the direction in which the own vehicle 1 moves, and it is easy to recognize the situation in the moving direction based on the environmental sound.
  • the vehicle of the present embodiment is the own vehicle 1 equipped with the speaker array 60 composed of a plurality of speakers 61 to 68, and is configured so that the localization of the sound image can be changed by the speaker array 60.
  • the own vehicle 1 is provided with a microphone 50 that collects sounds around the own vehicle 1, and the speaker array 60 localizes and reproduces the sound information collected by the microphone 50 in the direction in which the sound is generated. .. Therefore, by reproducing the surrounding sound from the generation direction by the sound image, it is possible to easily hear the environmental sound even when wearing a helmet.
  • the speaker array 60 generates a virtual sound source in a specific direction or raises the volume of the virtual sound source only under predetermined conditions under which the driver should pay attention to the sound around the own vehicle 1. Increase. Therefore, the speaker array 60 can save energy as compared with the case where a virtual sound source is always generated or the volume of the virtual sound source is increased.
  • the predetermined condition that the driver should pay attention to the sound around the own vehicle 1 is when it is detected that the other vehicle 200 is approaching, and the specific direction at that time. Is the direction in which the other vehicle 200 exists. Therefore, it is possible to easily recognize from which direction the other vehicle 200 approaches the own vehicle 1.
  • the detection that the other vehicle 200 is approaching is performed when the sound pressure in a specific frequency band of the sound information collected by the microphone 50 increases within a predetermined time. Therefore, it is possible to detect that another vehicle 200 is approaching without using a detection means other than the microphone 50.
  • the detection that the other vehicle 200 is approaching is performed when the sound pressure in a specific frequency band of the sound information collected by the microphone 50 exceeds a predetermined threshold value. Therefore, it is possible to detect that another vehicle 200 is approaching without using a detection means other than the microphone 50.
  • the predetermined condition that the driver should pay attention to the sound around the own vehicle 1 is when the operation of the own vehicle 1 is detected, and the specific direction at that time is the operation. It is a direction related to. Therefore, it is possible to easily hear the sound in the direction in which the own vehicle 1 moves by the operation.
  • the detected operation of the own vehicle 1 is a turn signal operation
  • the specific direction is the right side or the left side of the own vehicle 1. Therefore, when the turn signal operation is detected, it is possible to easily hear the right or left sound in the direction in which the own vehicle 1 is assumed to move due to the turn signal operation.
  • the detected operation of the own vehicle 1 is a brake operation
  • the specific direction is the rear of the own vehicle 1. Therefore, when the brake operation is detected, it is possible to easily hear the sound behind the vehicle 1 which is assumed to move relatively due to the brake operation.
  • the detected operation of the own vehicle 1 is a throttle operation
  • the specific direction is the front of the own vehicle 1. Therefore, when the throttle operation is detected, it is possible to easily hear the sound in front of the vehicle 1 which is assumed to move due to the throttle operation.
  • the microphone 50 is limited to include the first microphone 51 and the second microphone 52, but may include three or more microphones, as long as the microphone 50 can collect sound in a stereophonic manner.
  • the configuration in which the speaker array 60 is mounted on the motorcycle (vehicle) 1 has been described.
  • the term "mounted" on the vehicle body of the speaker array 60 includes not only the case where the speaker array 60 is directly fixed on the vehicle body but also the case where the speaker array 60 is indirectly fixed to the vehicle body by a stay or the like.
  • the speaker array 60 is not limited to the configuration in which the speaker array 60 is directly fixed to the vehicle body frame 10, but may be configured to be indirectly fixed to the vehicle body frame 10 via a stay separate from the vehicle body frame 10. It may be configured to be indirectly fixed to the vehicle body frame 10 via the 22. Further, the speaker array 60 may be fixed to the vehicle body cover 22 via a stay separate from the vehicle body cover 22. That is, the fact that the speaker array 60 is "mounted" on the vehicle is used to include a state in which the speaker array 60 and the vehicle move (exercise) together.
  • the speaker array 60 has been described as being arranged in front of the display unit 30, for example, speakers may be arranged on the left and right sides of the seat 14 or behind the display unit 30.
  • the motorcycle 1 is taken as an example as a saddle-riding vehicle, but the present invention is not limited to this, and the present invention is a three-wheeled vehicle including two front wheels or two rear wheels. It is applicable to saddle-riding vehicles and saddle-riding vehicles equipped with four or more wheels.

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Abstract

Provided is a vehicle configured so that environmental sound can be easily heard even if a helmet is being worn.　A vehicle (1) is equipped with a speaker array (60) constituted by a plurality of speakers (61-68), wherein: the vehicle is configured so that the orientation of a virtual sound source can be changed using the speaker array (60); the vehicle (1) is provided with a microphone (50) that collects the sounds around the vehicle; and the speaker array (60) reproduces information on the sounds collected by the microphone (50) so that the sound reproduction is oriented in the direction from which the sound is generated.

Description

車両vehicle
　本発明は、車両に関する。 The present invention relates to a vehicle.
　従来、車両の周囲の音について聞こえ易さを調整する技術が知られている（例えば、特許文献１参照）。特許文献１では、マイクロホンにより車両の周囲の雑音を集音し、ヘルメット内のスピーカから雑音と逆位相の音を発生させることで、雑音を聞こえなくしている。 Conventionally, a technique for adjusting the audibility of sounds around a vehicle is known (see, for example, Patent Document 1). In Patent Document 1, noise around the vehicle is collected by a microphone, and a sound having a phase opposite to the noise is generated from a speaker in the helmet, so that the noise cannot be heard.
特開平８－１１３８１５号公報Japanese Unexamined Patent Publication No. 8-113815
　しかしながら、特許文献１に記載の技術では、雑音が聞こえなくなるだけであり、雑音以外の周囲の音は増幅されるわけではないので、ヘルメットをしていない状態と比較すると、雑音以外の周囲の音が聞き取りづらいという問題がある。
　本発明は、上述した事情に鑑みてなされたものであり、ヘルメットをかぶった状態でも環境音を聞き取り易くできる車両を提供することを目的とする。 However, in the technique described in Patent Document 1, the noise is only inaudible and the ambient sound other than the noise is not amplified. Therefore, the ambient sound other than the noise is compared with the state without the helmet. However, there is a problem that it is difficult to hear.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle capable of easily hearing environmental sounds even when wearing a helmet.
　この明細書には、２０２０年６月２日に出願された日本国特許出願・特願２０２０－０９６２４５の全ての内容が含まれる。
　車両は、複数のスピーカで構成されるスピーカアレイを搭載した車両であって、該スピーカアレイにより仮想音源の定位を変化可能に構成されており、前記車両には車両周囲の音を集音するマイクロフォンが備えられており、前記スピーカアレイは、該マイクロフォンが集音した音情報を該音が発生する方向に定位して再生することを特徴とする。 This specification includes all the contents of the Japanese patent application and Japanese Patent Application No. 2020-096245 filed on June 2, 2020.
The vehicle is a vehicle equipped with a speaker array composed of a plurality of speakers, and the localization of the virtual sound source can be changed by the speaker array. The vehicle is a microphone that collects sounds around the vehicle. The speaker array is characterized in that the sound information collected by the microphone is localized and reproduced in the direction in which the sound is generated.
　上記構成において、前記スピーカアレイは、乗員が前記車両周囲の音に注意を向けるべき所定の条件の状態でのみ、特定の方向に仮想音源を発生させる、または、仮想音源の音量を増大させてもよい。 In the above configuration, the speaker array may generate a virtual sound source in a specific direction or increase the volume of the virtual sound source only under predetermined conditions under which the occupant should pay attention to the sound around the vehicle. good.
　また、上記構成において、前記所定の条件は、他の車両が接近していることを検知したときであり、前記特定の方向とは前記他の車両が存在する方向であってもよい。 Further, in the above configuration, the predetermined condition is when it is detected that another vehicle is approaching, and the specific direction may be a direction in which the other vehicle exists.
　また、上記構成において、前記他の車両が接近していることの検知は、前記マイクロフォンが集音する音情報の特定の周波数帯の音圧が所定時間内に増大したことをもって行ってもよい。 Further, in the above configuration, the detection that the other vehicle is approaching may be performed when the sound pressure in a specific frequency band of the sound information collected by the microphone increases within a predetermined time.
　また、上記構成において、前記他の車両が接近していることの検知は、前記マイクロフォンが集音する音情報の特定の周波数帯の音圧が所定の閾値を越えたことをもって行ってもよい。 Further, in the above configuration, the detection that the other vehicle is approaching may be performed when the sound pressure in a specific frequency band of the sound information collected by the microphone exceeds a predetermined threshold value.
　また、上記構成において、前記所定の条件は、前記車両の操作を検知したときであり、前記特定の方向とは該操作と関連する方向あってもよい。 Further, in the above configuration, the predetermined condition is when the operation of the vehicle is detected, and the specific direction may be a direction related to the operation.
　また、上記構成において、前記操作は、ウインカー操作であり、前記特定の方向とは前記車両の右方、または、左方であってもよい。 Further, in the above configuration, the operation is a turn signal operation, and the specific direction may be the right side or the left side of the vehicle.
　また、上記構成において、前記操作は、ブレーキ操作であり、前記特定の方向とは前記車両の後方であってもよい。 Further, in the above configuration, the operation is a brake operation, and the specific direction may be behind the vehicle.
　前記操作は、スロットル操作であり、前記特定の方向とは前記車両の前方であってもよい。 The operation is a throttle operation, and the specific direction may be in front of the vehicle.
　車両は、複数のスピーカで構成されるスピーカアレイを搭載した車両であって、該スピーカアレイにより仮想音源の定位を変化可能に構成されており、前記車両には車両周囲の音を集音するマイクロフォンが備えられており、前記スピーカアレイは、該マイクロフォンが集音した音情報を該音が発生する方向に定位して再生する。この構成によれば、仮想音源により周囲の音を発生方向から再生することでヘルメットをかぶった状態でも環境音を聞き取り易くできる。 The vehicle is a vehicle equipped with a speaker array composed of a plurality of speakers, and the localization of a virtual sound source can be changed by the speaker array. The vehicle is a microphone that collects sounds around the vehicle. The speaker array is provided with, and the speaker array localizes and reproduces the sound information collected by the microphone in the direction in which the sound is generated. According to this configuration, the ambient sound can be easily heard even when the helmet is worn by reproducing the surrounding sound from the generation direction by the virtual sound source.
　上記構成において、前記スピーカアレイは、乗員が前記車両周囲の音に注意を向けるべき所定の条件の状態でのみ、特定の方向に仮想音源を発生させる、または、仮想音源の音量を増大させてもよい。この構成によれば、常時、仮想音源を発生させたり、仮想音源の音量を増大させる場合に比べて、省エネルギーにすることができる。 In the above configuration, the speaker array may generate a virtual sound source in a specific direction or increase the volume of the virtual sound source only under predetermined conditions under which the occupant should pay attention to the sound around the vehicle. good. According to this configuration, energy can be saved as compared with the case where a virtual sound source is constantly generated or the volume of the virtual sound source is increased.
　また、上記構成において、前記所定の条件は、他の車両が接近していることを検知したときであり、前記特定の方向とは前記他の車両が存在する方向であってもよい。この構成によれば、他の車両がどの方向から接近するかを認識し易くできる。 Further, in the above configuration, the predetermined condition is when it is detected that another vehicle is approaching, and the specific direction may be a direction in which the other vehicle exists. According to this configuration, it is possible to easily recognize from which direction other vehicles are approaching.
　また、上記構成において、前記他の車両が接近していることの検知は、前記マイクロフォンが集音する音情報の特定の周波数帯の音圧が所定時間内に増大したことをもって行ってもよい。この構成によれば、マイクロフォン以外の検知手段を用いずに、他の車両が接近していることを検知することができる。 Further, in the above configuration, the detection that the other vehicle is approaching may be performed when the sound pressure in a specific frequency band of the sound information collected by the microphone increases within a predetermined time. According to this configuration, it is possible to detect that another vehicle is approaching without using a detection means other than a microphone.
　また、上記構成において、前記他の車両が接近していることの検知は、前記マイクロフォンが集音する音情報の特定の周波数帯の音圧が所定の閾値を越えたことをもって行ってもよい。この構成によれば、マイクロフォン以外の検知手段を用いずに、他の車両が接近していることを検知することができる。 Further, in the above configuration, the detection that the other vehicle is approaching may be performed when the sound pressure in a specific frequency band of the sound information collected by the microphone exceeds a predetermined threshold value. According to this configuration, it is possible to detect that another vehicle is approaching without using a detection means other than a microphone.
　また、上記構成において、前記所定の条件は、前記車両の操作を検知したときであり、前記特定の方向とは該操作と関連する方向あってもよい。この構成によれば、車両が操作により移動する方向の音を聞き易くすることができる。 Further, in the above configuration, the predetermined condition is when the operation of the vehicle is detected, and the specific direction may be a direction related to the operation. According to this configuration, it is possible to easily hear the sound in the direction in which the vehicle moves by operation.
　また、上記構成において、前記操作は、ウインカー操作であり、前記特定の方向とは前記車両の右方、または、左方であってもよい。この構成によれば、ウインカー操作を検知した場合には、ウインカー操作により車両が移動すると想定される方向の右方または左方の音を聞き易くすることができる。 Further, in the above configuration, the operation is a turn signal operation, and the specific direction may be the right side or the left side of the vehicle. According to this configuration, when the turn signal operation is detected, it is possible to easily hear the right or left sound in the direction in which the vehicle is expected to move due to the turn signal operation.
　また、上記構成において、前記操作は、ブレーキ操作であり、前記特定の方向とは前記車両の後方であってもよい。この構成によれば、ブレーキ操作を検知した場合には、ブレーキ操作により車両が相対的に移動すると想定される後方の音を聞き易くすることができる。 Further, in the above configuration, the operation is a brake operation, and the specific direction may be behind the vehicle. According to this configuration, when the brake operation is detected, it is possible to easily hear the rear sound that is assumed that the vehicle moves relatively due to the brake operation.
　前記操作は、スロットル操作であり、前記特定の方向とは前記車両の前方であってもよい。この構成によれば、スロットル操作を検知した場合には、スロットル操作により車両が移動すると想定される前方の音を聞き易くすることができる。 The operation is a throttle operation, and the specific direction may be in front of the vehicle. According to this configuration, when the throttle operation is detected, it is possible to easily hear the sound in front of the vehicle, which is assumed to move due to the throttle operation.
図１は、本発明の実施の形態に係る自動二輪車の左側面図である。FIG. 1 is a left side view of a motorcycle according to an embodiment of the present invention. 図２は、自動二輪車を上方から見た平面図である。FIG. 2 is a plan view of the motorcycle as viewed from above. 図３は、自動二輪車の前部を後方側から見た図である。FIG. 3 is a view of the front part of the motorcycle as viewed from the rear side. 図４は、制御装置の構成を示すブロック構成図である。FIG. 4 is a block configuration diagram showing the configuration of the control device. 図５は、自動二輪車の音出力系統の構成を示す図である。FIG. 5 is a diagram showing a configuration of a sound output system of a motorcycle. 図６は、自動二輪車が路上を走行する場合の模式図である。FIG. 6 is a schematic diagram of a motorcycle traveling on a road. 図７は、自動二輪車の周囲音の周波数スペクトルを示す図である。FIG. 7 is a diagram showing a frequency spectrum of ambient sound of a motorcycle. 図８は、接近時の音像定位処理で決定される周囲音の周波数スペクトルを示す図である。FIG. 8 is a diagram showing a frequency spectrum of ambient sound determined by sound image localization processing at the time of approach. 図９は、制御部の動作を示すフローチャートである。FIG. 9 is a flowchart showing the operation of the control unit.
　以下、図面を参照して本発明の実施の形態について説明する。なお、説明中、前後左右および上下といった方向の記載は、特に記載がなければ車体に対する方向と同一とする。また、各図に示す符号ＦＲは車体前方を示し、符号ＵＰは車体上方を示し、符号ＬＨは車体左方を示す。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the explanation, the description of the directions such as front / rear / left / right and up / down is the same as the direction with respect to the vehicle body unless otherwise specified. Further, the reference numeral FR shown in each figure indicates the front of the vehicle body, the reference numeral UP indicates the upper portion of the vehicle body, and the reference numeral LH indicates the left side of the vehicle body.
　図１は、本発明の実施の形態に係る自動二輪車１の左側面図である。図２は、自動二輪車１を上方から見た平面図である。図３は、自動二輪車１の前部を後方側から見た図である。
　自動二輪車１は、車体フレーム１０にパワーユニットとしてのエンジン１１が支持され、前輪２を操舵可能に支持する操舵系１２が車体フレーム１０の前端部に左右に操舵可能に支持され、後輪３を支持するスイングアーム１３が車体フレーム１０の後部に設けられる車両である。後輪３は、エンジン１１によって駆動される駆動輪である。
　自動二輪車１は、乗員がシート１４に跨るようにして着座する鞍乗り型車両であり、シート１４は、車体フレーム１０の後部の上方に設けられる。なお、上記パワーユニットは、電動モーターであっても良い。 FIG. 1 is a left side view of the motorcycle 1 according to the embodiment of the present invention. FIG. 2 is a plan view of the motorcycle 1 as viewed from above. FIG. 3 is a view of the front part of the motorcycle 1 as viewed from the rear side.
In the motorcycle 1, the engine 11 as a power unit is supported by the vehicle body frame 10, and the steering system 12 that supports the front wheels 2 so as to be steerable is supported by the front end portion of the vehicle body frame 10 so as to be steerable to the left and right, and supports the rear wheels 3. The swing arm 13 is a vehicle provided at the rear of the vehicle body frame 10. The rear wheel 3 is a drive wheel driven by the engine 11.
The motorcycle 1 is a saddle-riding vehicle in which an occupant sits so as to straddle the seat 14, and the seat 14 is provided above the rear portion of the vehicle body frame 10. The power unit may be an electric motor.
　シート１４は、車体フレーム１０によって下方から支持され、車両前後方向において前輪２と後輪３との間に配置される。シート１４は、エンジン１１の後上方に配置される。
　前輪２は、操舵系１２の下端部に支持される。操舵系１２の上端部には、操舵用のハンドル２０が設けられる。ハンドル２０は、シート１４の前方且つ上方に配置される。ハンドル２０は、車体においてシート１４よりも前方に位置する車体前部１０ａに支持され、車体前部１０ａに対し左右に操舵される。 The seat 14 is supported from below by the vehicle body frame 10 and is arranged between the front wheels 2 and the rear wheels 3 in the front-rear direction of the vehicle. The seat 14 is arranged above the rear of the engine 11.
The front wheel 2 is supported by the lower end portion of the steering system 12. A steering wheel 20 is provided at the upper end of the steering system 12. The handle 20 is arranged in front of and above the seat 14. The handle 20 is supported by the vehicle body front portion 10a located in front of the seat 14 in the vehicle body, and is steered to the left and right with respect to the vehicle body front portion 10a.
　ハンドル２０は、車体前部１０ａに配置される操舵軸２０ａを回転中心として回動する。操舵軸２０ａは、前輪２と同様に自動二輪車１の車幅の中央に位置する。操舵軸２０ａは、操舵系１２の一部であり、車両側面視では、鉛直方向に対し後傾する。
　ハンドル２０は、車幅中央の操舵軸２０ａに対し左右の外側にそれぞれ延出する棒状のハンドル部２０ｂと、ハンドル部２０ｂの車幅方向外側の端部に設けられる左右一対のグリップ部２０ｃとを備える。シート１４に着座する乗員は、左右のグリップ部２０ｃを左右の手でそれぞれ把持し、ハンドル２０を操舵する。 The handle 20 rotates about the steering shaft 20a arranged on the front portion 10a of the vehicle body as a rotation center. The steering shaft 20a is located at the center of the width of the motorcycle 1 like the front wheels 2. The steering shaft 20a is a part of the steering system 12, and is tilted backward with respect to the vertical direction when viewed from the side of the vehicle.
The steering wheel 20 has a rod-shaped handle portion 20b extending to the left and right outside with respect to the steering shaft 20a at the center of the vehicle width, and a pair of left and right grip portions 20c provided at the outer ends of the handle portion 20b in the vehicle width direction. Be prepared. The occupant seated on the seat 14 grips the left and right grip portions 20c with his left and right hands, respectively, and steers the handle 20.
　自動二輪車１は、車体フレーム１０等の車体を覆う車体カバー２２を備える。車体カバー２２の前部には、操舵系１２の上部及び車体フレーム１０の前端部を前方及び側方から覆うフロントカバー２３と、ハンドル２０とシート１４との間の車体を上方及び側方から覆うセンターカバー２４とを備える。車体前部１０ａは、車体フレーム１０及び車体カバー２２等によって構成される。
　自動二輪車１は、フロントカバー２３に対し上方に延出するウインドスクリーン２５を、ハンドル２０の前方に備える。 The motorcycle 1 includes a vehicle body cover 22 that covers a vehicle body such as a vehicle body frame 10. The front portion of the vehicle body cover 22 covers the front cover 23 that covers the upper portion of the steering system 12 and the front end portion of the vehicle body frame 10 from the front and sides, and the vehicle body between the handle 20 and the seat 14 from above and from the sides. A center cover 24 is provided. The vehicle body front portion 10a is composed of a vehicle body frame 10, a vehicle body cover 22, and the like.
The motorcycle 1 is provided with a windscreen 25 extending upward with respect to the front cover 23 in front of the handle 20.
　自動二輪車１は、フロントカバー２３の左右の側部から車幅方向外側に延出するバックミラー２６を左右一対備える。左右のバックミラー２６は、ウインドスクリーン２５に対し車幅方向外側に配置される。バックミラー２６は、ウインドスクリーン２５の下端部の近傍に位置する。
　また、自動二輪車１は、前輪２を上方から覆うフロントフェンダー２８を備える。フロントフェンダー２８は、操舵系１２の下部に支持される。 The motorcycle 1 includes a pair of left and right rearview mirrors 26 extending outward in the vehicle width direction from the left and right side portions of the front cover 23. The left and right rear-view mirrors 26 are arranged outside the windscreen 25 in the vehicle width direction. The rearview mirror 26 is located near the lower end of the windscreen 25.
Further, the motorcycle 1 includes a front fender 28 that covers the front wheel 2 from above. The front fender 28 is supported by the lower part of the steering system 12.
　自動二輪車１は、灯火器として、ヘッドライト２９ａ及び左右一対のウインカー２９ｂを備える。ヘッドライト２９ａは、フロントカバー２３の前端部に設けられ、ウインカー２９ｂは、左右のバックミラー２６の前面にそれぞれ設けられる。 The motorcycle 1 is provided with a headlight 29a and a pair of left and right turn signals 29b as lighting equipment. The headlight 29a is provided at the front end portion of the front cover 23, and the blinker 29b is provided at the front surface of the left and right rear-view mirrors 26, respectively.
　自動二輪車１は、自動二輪車１の状態を表示する表示部３０を、ウインドスクリーン２５の後方に備える。表示部３０は、ハンドル２０の前方且つ上方に配置される。表示部３０は、自動二輪車１の車速等の自動二輪車１に関する情報を表示するメーターユニットである。
　表示部３０は、自動二輪車１に関する情報（車速、エンジン回転数等）を表示する計器類３１，３２と、各種の情報を表示するモニター３３とを備えている。モニター３３は、液晶パネル等の公知の表示パネルを備え、自動二輪車１に関する情報を含む各種の情報を後上方の乗員側に向けて表示する。 The motorcycle 1 is provided with a display unit 30 for displaying the state of the motorcycle 1 behind the windscreen 25. The display unit 30 is arranged in front of and above the handle 20. The display unit 30 is a meter unit that displays information about the motorcycle 1 such as the vehicle speed of the motorcycle 1.
The display unit 30 includes instruments 31 and 32 for displaying information (vehicle speed, engine speed, etc.) related to the motorcycle 1, and a monitor 33 for displaying various information. The monitor 33 is provided with a known display panel such as a liquid crystal panel, and displays various information including information about the motorcycle 1 toward the occupant side on the rear upper side.
　自動二輪車１は、自動二輪車１の各部を乗員が操作するための操作部３５として、左右のハンドル部２０ｂにそれぞれ設けられる一対のハンドル側操作部３６と、表示部３０の後方で車幅の中央に配置される中央操作部３７とを備える。操作部３５は、シート１４よりも前方に配置される。
　操作部３５の操作によって、例えば、ヘッドライト２９ａ及びウインカー２９ｂ等の灯火器の操作、自動二輪車１に搭載されるオーディオシステムの操作、自動二輪車１に搭載されるナビゲーションシステムの操作、エンジン１１の運転モードの操作、前輪２及び後輪３の電子制御サスペンションの特性変更の操作、表示部３３に表示される各種の操作メニューの操作等が行われる。 The motorcycle 1 has a pair of steering wheel side operation units 36 provided on the left and right handlebars 20b as operation units 35 for the occupant to operate each part of the motorcycle 1, and the center of the vehicle width behind the display unit 30. It is provided with a central operation unit 37 arranged in. The operation unit 35 is arranged in front of the seat 14.
By operating the operation unit 35, for example, the operation of lighting devices such as the headlight 29a and the turn signal 29b, the operation of the audio system mounted on the motorcycle 1, the operation of the navigation system mounted on the motorcycle 1, and the operation of the engine 11 Mode operations, operation of changing the characteristics of the electronically controlled suspensions of the front wheels 2 and the rear wheels 3, operations of various operation menus displayed on the display unit 33, and the like are performed.
　自動二輪車１は、センターカバー２４における車幅方向の中央部の前端部２４ａから前方に延出する板状の操作部支持部３８を備える。操作部支持部３８は、センターカバー２４からハンドル２０の上方を通って前方に延び、表示部３０の後端部に接続される。操作部支持部３８は、ハンドル２０の車幅方向の中央部の上方に位置し、操舵軸２０ａを上方から覆う。操作部支持部３８は、車体カバー２２の一部を構成する。 The motorcycle 1 includes a plate-shaped operation portion support portion 38 extending forward from the front end portion 24a of the central portion in the vehicle width direction of the center cover 24. The operation unit support portion 38 extends forward from the center cover 24 through above the handle 20 and is connected to the rear end portion of the display unit 30. The operation unit support portion 38 is located above the central portion of the steering wheel 20 in the vehicle width direction and covers the steering shaft 20a from above. The operation unit support unit 38 constitutes a part of the vehicle body cover 22.
　中央操作部３７は、操作部支持部３８上に設けられ、センターカバー２４と表示部３０との間に位置する。
　中央操作部３７は、複数の操作ボタンから成る押圧操作部３７ａと、操作部支持部３８から上方に突出するスティック状の操作子３７ｂとを備える。
　操作子３７ｂは、押圧操作部３７ａの前方に配置されるとともに、押圧操作部３７ａよりも上方に突出する。操作子３７ｂは、車幅の中央に位置する。
　操作子３７ｂによれば、操作子３７ｂを任意の方向に傾斜させる傾斜操作、及び、操作子３７ｂを操作子３７ｂの軸を中心に回転させる回転操作によって、自動二輪車１の各部を操作することできる。 The central operation unit 37 is provided on the operation unit support unit 38 and is located between the center cover 24 and the display unit 30.
The central operation unit 37 includes a pressing operation unit 37a composed of a plurality of operation buttons and a stick-shaped operator 37b protruding upward from the operation unit support unit 38.
The operator 37b is arranged in front of the pressing operation unit 37a and projects upward from the pressing operation unit 37a. The operator 37b is located at the center of the vehicle width.
According to the operator 37b, each part of the motorcycle 1 can be operated by the tilting operation of tilting the operator 37b in an arbitrary direction and the rotation operation of rotating the operator 37b around the axis of the operator 37b. ..
　自動二輪車１は、バックミラー２６の上部に、集音用のマイクロフォン５０を備える。マイクロフォン５０は、第１マイクロフォン５１と第２マイクロフォン５２を備える。第１マイクロフォン５１は、左側のバックミラー２６の上面に配置される。第２マイクロフォン５２は、右側のバックミラー２６の上面に配置される。マイクロフォン５０は、第１マイクロフォン５１と第２マイクロフォン５２とにより、周囲の環境音を立体音響方式で集音する。 The motorcycle 1 is provided with a microphone 50 for collecting sound on the upper part of the rear-view mirror 26. The microphone 50 includes a first microphone 51 and a second microphone 52. The first microphone 51 is arranged on the upper surface of the rear-view mirror 26 on the left side. The second microphone 52 is arranged on the upper surface of the rear-view mirror 26 on the right side. The microphone 50 collects ambient environmental sounds by a stereophonic method by the first microphone 51 and the second microphone 52.
　自動二輪車１は、表示部３０の計器類３１，３２や、モニター３３よりも上部にスピーカアレイ６０を備える。スピーカアレイ６０を、表示部３０の計器類３１，３２や、モニター３３よりも上部に配置することで、運転者の耳により近い位置に配置され、ハンドルなどによる音の減衰を低減することができる。 The motorcycle 1 is provided with instruments 31 and 32 of the display unit 30 and a speaker array 60 above the monitor 33. By arranging the speaker array 60 above the instruments 31 and 32 of the display unit 30 and the monitor 33, the speaker array 60 can be arranged closer to the driver's ear and the attenuation of sound due to the steering wheel or the like can be reduced. ..
　スピーカアレイ６０は、自動二輪車１の幅方向（左右方向）に並ぶ複数のスピーカを備え、運転者（乗員）等が聴取可能なエリアを幅方向に拡げたスピーカユニットである。本構成は、運転者から見て左から第１スピーカ６１、第２スピーカ６２、第３スピーカ６３、第４スピーカ６４、第５スピーカ６５、第６スピーカ６６、第７スピーカ６７、第８スピーカ６８を一列に並べた構成である。この構成により、運転者（乗員）及び同乗者（乗員）の頭部が左右等に移動しても、第１スピーカ６１～第８スピーカ６８のいずれかから出力される音を、運転者や同乗者の耳に届けることができる。また、本実施形態では、スピーカアレイ６０が備えるスピーカの数が８個である場合について説明するが、スピーカの数は任意であり、適宜変更可能である。 The speaker array 60 is a speaker unit equipped with a plurality of speakers arranged in the width direction (left-right direction) of the motorcycle 1 and expanding the area in which the driver (occupant) and the like can hear in the width direction. In this configuration, the first speaker 61, the second speaker 62, the third speaker 63, the fourth speaker 64, the fifth speaker 65, the sixth speaker 66, the seventh speaker 67, and the eighth speaker 68 are configured from the left when viewed from the driver. Is arranged in a row. With this configuration, even if the heads of the driver (occupant) and the passenger (occupant) move to the left or right, the sound output from any of the first speaker 61 to the eighth speaker 68 can be heard by the driver or the passenger. It can be delivered to the ears of others. Further, in the present embodiment, the case where the number of speakers included in the speaker array 60 is eight will be described, but the number of speakers is arbitrary and can be changed as appropriate.
　図４は、制御装置１００の構成を示すブロック構成図である。
　図４を参照しながら制御装置１００の構成について説明する。
　制御装置１００は、車両情報入力部１０１、ＤＳＰ１０２及び制御部１１０を備える。ＤＳＰは、Ｄｉｇｉｔａｌ　Ｓｉｇｎａｌ　Ｐｒｏｃｅｓｓｏｒを省略した表記である。 FIG. 4 is a block configuration diagram showing the configuration of the control device 100.
The configuration of the control device 100 will be described with reference to FIG.
The control device 100 includes a vehicle information input unit 101, a DSP 102, and a control unit 110. DSP is a notation that abbreviates Digital Signal Processor.
　車両情報入力部１０１は、自動二輪車（以下、「自車両」とも言う）１との接続インターフェイスとして機能し、自車両１から車両情報が入力される。車両情報には、車速検出部７１のセンサデータと、スロットル検出部７２のセンサデータと、ウインカースイッチ検出部７３のセンサデータと、ブレーキスイッチ検出部７４のセンサデータと、が含まれる。 The vehicle information input unit 101 functions as a connection interface with the motorcycle (hereinafter, also referred to as "own vehicle") 1, and vehicle information is input from the own vehicle 1. The vehicle information includes the sensor data of the vehicle speed detection unit 71, the sensor data of the throttle detection unit 72, the sensor data of the turn signal switch detection unit 73, and the sensor data of the brake switch detection unit 74.
　車速検出部７１は、自車両１の車速を検出するセンサである。車速検出部７１は、自車両１の車速を検出し、自車両１の車速を示すセンサデータを制御装置１００に出力する。
　スロットル検出部７２は、スロットル操作を検出するセンサである。スロットル検出部７２は、スロットル操作を示すセンサデータを制御装置１００に出力する。 The vehicle speed detection unit 71 is a sensor that detects the vehicle speed of the own vehicle 1. The vehicle speed detection unit 71 detects the vehicle speed of the own vehicle 1 and outputs sensor data indicating the vehicle speed of the own vehicle 1 to the control device 100.
The throttle detection unit 72 is a sensor that detects the throttle operation. The throttle detection unit 72 outputs sensor data indicating throttle operation to the control device 100.
　ウインカースイッチ検出部７３は、操作部３５のウインカースイッチの操作を検出するセンサである。ウインカースイッチ検出部７３は、操作部３５のウインカースイッチの操作による左方向指示操作および右方向指示操作を示すセンサデータを制御装置１００に出力する。
　ブレーキスイッチ検出部７４は、ブレーキ操作を検出するセンサである。ブレーキスイッチ検出部７４は、ブレーキ操作を示すセンサデータを制御装置１００に出力する。 The turn signal switch detection unit 73 is a sensor that detects the operation of the turn signal switch of the operation unit 35. The turn signal switch detection unit 73 outputs sensor data indicating a left direction instruction operation and a right direction instruction operation by the operation of the turn signal switch of the operation unit 35 to the control device 100.
The brake switch detection unit 74 is a sensor that detects the brake operation. The brake switch detection unit 74 outputs sensor data indicating the brake operation to the control device 100.
　ＤＳＰ１０２には、音入力部１４０と音出力部１５０とが接続される。
　音入力部１４０は、マイクロフォン５０を備え、集音した周囲の音をアナログの音信号に変換してＤＳＰ１０２に出力する。ＤＳＰ１０２は、音入力部１４０から入力される音信号をデジタル信号に変換して制御部１１０に出力する。音入力部１４０は、自車両１に搭載されたマイクロフォン５０を利用して、立体音響方式で自車両１の周囲の音を集音する。 The sound input unit 140 and the sound output unit 150 are connected to the DSP 102.
The sound input unit 140 includes a microphone 50, converts the collected ambient sound into an analog sound signal, and outputs the sound to the DSP 102. The DSP 102 converts the sound signal input from the sound input unit 140 into a digital signal and outputs it to the control unit 110. The sound input unit 140 uses a microphone 50 mounted on the own vehicle 1 to collect sounds around the own vehicle 1 by a stereophonic method.
　ＤＳＰ１０２は、制御部１１０で処理された音情報をもとに音信号を生成する。生成される音信号は、アナログ信号であり、複数チャネル生成される。ＤＳＰ１０２は、生成したアナログの音信号を音出力部１５０に出力する。 The DSP 102 generates a sound signal based on the sound information processed by the control unit 110. The generated sound signal is an analog signal, and a plurality of channels are generated. The DSP 102 outputs the generated analog sound signal to the sound output unit 150.
　図５は、自動二輪車の１の音出力系統の構成を示す図である。
　図５に示すように、音出力系統は、コントローラーボード１４５に搭載される。コントローラーボード１４５には、ＤＳＰ１０２と、信号増幅部１６０とが搭載される。この他に、コントローラーボード１４５には、ＤＳＰ１０２にバッテリーの電力を供給する電力供給部が搭載される。電力供給部の図示は省略する。 FIG. 5 is a diagram showing the configuration of the sound output system of 1 of the motorcycle.
As shown in FIG. 5, the sound output system is mounted on the controller board 145. A DSP 102 and a signal amplification unit 160 are mounted on the controller board 145. In addition to this, the controller board 145 is equipped with a power supply unit that supplies battery power to the DSP 102. The illustration of the power supply unit is omitted.
　信号増幅部１６０は、第１ＡＭＰ１６１、第２ＡＭＰ１６２、第３ＡＭＰ１６３、第４ＡＭＰ１６４、第５ＡＭＰ１６５、第６ＡＭＰ１６６、第７ＡＭＰ１６７及び第８ＡＭＰ１６８を備える。ＡＭＰは、Ａｍｐｌｉｆｉｅｒを省略した表記である。 The signal amplification unit 160 includes a first AMP161, a second AMP162, a third AMP163, a fourth AMP164, a fifth AMP165, a sixth AMP166, a seventh AMP167, and an eighth AMP168. AMP is a notation that omits Amplifier.
　第１ＡＭＰ１６１は、第１スピーカ６１に接続される。第２ＡＭＰ１６２は、第２スピーカ６２に接続される。第１ＡＭＰ１６１は、入力された音信号を増幅して第１スピーカ６１に出力する。第２ＡＭＰ１６２は、入力された音信号を増幅して第２スピーカ６２に出力する。 The first AMP 161 is connected to the first speaker 61. The second AMP 162 is connected to the second speaker 62. The first AMP 161 amplifies the input sound signal and outputs it to the first speaker 61. The second AMP 162 amplifies the input sound signal and outputs it to the second speaker 62.
　第３ＡＭＰ１６３は、第３スピーカ６３に接続される。第４ＡＭＰ１６４は、第４スピーカ６４に接続される。第５ＡＭＰ１６５は、第５スピーカ６５に接続される。第６ＡＭＰ１６６は、第６スピーカ６６に接続される。
　第３ＡＭＰ１６３は、入力された音信号を増幅して第３スピーカ６３に出力する。第４ＡＭＰ１６４は、入力された音信号を増幅して第２スピーカ６２に出力する。第５ＡＭＰ１６５は、入力された音信号を増幅して第５スピーカ６５に出力する。第６ＡＭＰ１６６は、入力された音信号を増幅して第６スピーカ６６に出力する。 The third AMP 163 is connected to the third speaker 63. The 4th AMP 164 is connected to the 4th speaker 64. The fifth AMP 165 is connected to the fifth speaker 65. The sixth AMP 166 is connected to the sixth speaker 66.
The third AMP 163 amplifies the input sound signal and outputs it to the third speaker 63. The fourth AMP 164 amplifies the input sound signal and outputs it to the second speaker 62. The fifth AMP 165 amplifies the input sound signal and outputs it to the fifth speaker 65. The sixth AMP 166 amplifies the input sound signal and outputs it to the sixth speaker 66.
　第７ＡＭＰ１６７は、第７スピーカ６７に接続される。第８ＡＭＰ１６８は、第８スピーカ６８に接続される。第７ＡＭＰ１６７は、入力された音信号を増幅して第７スピーカ６７に出力する。第８ＡＭＰ１６８は、入力された音信号を増幅して第２スピーカ６２に出力する。 The 7th AMP 167 is connected to the 7th speaker 67. The eighth AMP 168 is connected to the eighth speaker 68. The 7th AMP 167 amplifies the input sound signal and outputs it to the 7th speaker 67. The eighth AMP 168 amplifies the input sound signal and outputs it to the second speaker 62.
　図４において、制御装置１００の制御部１１０は、記憶部１２０と、プロセッサ１３０とを備えるコンピュータ装置である。記憶部１２０は、ＲＯＭやＲＡＭ等のメモリを備える。ＲＯＭは、Ｒｅａｄ　Ｏｎｌｙ　Ｍｅｍｏｒｙを省略した表記である。ＲＡＭは、Ｒａｎｄｏｍ　ａｃｃｅｓｓ　ｍｅｍｏｒｙを省略した表記である。記憶部１２０は、プロセッサ１３０が実行する制御プログラム１２１を記憶する。制御プログラム１２１には、アプリケーションプログラムが含まれる。また、記憶部１２０は、プロセッサ１３０が、コンピュータプログラムの実行時に処理されるデータや処理結果のデータを記憶する。 In FIG. 4, the control unit 110 of the control device 100 is a computer device including a storage unit 120 and a processor 130. The storage unit 120 includes a memory such as a ROM or a RAM. ROM is a notation that abbreviates Read Only Memory. RAM is a notation that omits Random access memory. The storage unit 120 stores the control program 121 executed by the processor 130. The control program 121 includes an application program. Further, the storage unit 120 stores the data processed by the processor 130 when the computer program is executed and the data of the processing result.
　プロセッサ１３０は、ＣＰＵや、マイクロコントローラ、ＤＳＰ等で構成され、プログラムを実行することにより制御部１１０の各部を制御する。ＣＰＵは、Ｃｅｎｔｒａｌ　Ｐｒｏｃｅｓｓｉｎｇ　Ｕｎｉｔを省略した表記である。また、プロセッサ１３０は、プロセッサ１３０及び記憶部１２０を統合したＳｏＣであってもよい。ＳｏＣは、Ｓｙｓｔｅｍ－ｏｎ－ａ－ｃｈｉｐを省略した表記である。 The processor 130 is composed of a CPU, a microcontroller, a DSP, and the like, and controls each part of the control unit 110 by executing a program. CPU is a notation that omits Central Processing Unit. Further, the processor 130 may be a SoC in which the processor 130 and the storage unit 120 are integrated. SoC is a notation that omits System-on-a-chip.
　制御部１１０は、プロセッサ１３０が、記憶部１２０に記憶された制御プログラム１２１を実行することで各種の機能的構成を実現する。本実施形態の制御部１１０は、機能的構成として、アプリ制御部１３１及び音像定位処理部１３２とを備える。
　また、制御部１１０は、車両情報入力部１０１、ＤＳＰ１０２に接続される。 The control unit 110 realizes various functional configurations by the processor 130 executing the control program 121 stored in the storage unit 120. The control unit 110 of the present embodiment includes an application control unit 131 and a sound image localization processing unit 132 as functional configurations.
Further, the control unit 110 is connected to the vehicle information input unit 101 and the DSP 102.
　図６は、自動二輪車１が路上を走行する場合の模式図である。図７は、自動二輪車１の周囲音の周波数スペクトルを示す図である。
　本実施の形態の自車両（自動二輪車）１が路上を走行する際には、自車両１の自車風切り音Ｎ１が観測される。また、他車両（自車両１以外の他の車両）２００の他車排気音Ｎ２や、他車ロードノイズ音Ｎ３、他車風切り音Ｎ４などが観測される。これらの音Ｎ１～Ｎ４の高速フーリエ変換による解析結果である周波数スペクトルによると、自車風切り音Ｎ１よりも、他車排気音Ｎ２は高い周波数帯で観測される。また、他車排気音Ｎ２よりも、他車ロードノイズ音Ｎ３は高い周波数帯で観測される。さらに、他車ロードノイズ音Ｎ３よりも、他車風切り音Ｎ４が高い周波数帯で観測される。すなわち、所定の周波数を境にして、自車両１の音Ｎ１と、他車両２００の音Ｎ２～Ｎ４を区別することができる。 FIG. 6 is a schematic diagram when the motorcycle 1 travels on the road. FIG. 7 is a diagram showing a frequency spectrum of ambient sound of the motorcycle 1.
When the own vehicle (motorcycle) 1 of the present embodiment travels on the road, the own vehicle wind noise N1 of the own vehicle 1 is observed. Further, another vehicle exhaust sound N2, another vehicle road noise sound N3, another vehicle wind noise N4, and the like of another vehicle (other vehicle other than own vehicle 1) 200 are observed. According to the frequency spectrum which is the analysis result by the fast Fourier transform of these sounds N1 to N4, the exhaust sound N2 of another vehicle is observed in a higher frequency band than the wind noise N1 of the own vehicle. Further, the road noise sound N3 of another vehicle is observed in a higher frequency band than the exhaust sound N2 of another vehicle. Further, the wind noise N4 of another vehicle is observed in a higher frequency band than the road noise noise N3 of another vehicle. That is, the sound N1 of the own vehicle 1 and the sounds N2 to N4 of the other vehicle 200 can be distinguished from each other with a predetermined frequency as a boundary.
　一般に、運転者がヘルメットをかぶった状態では、ヘルメットにより周囲の音の振幅が減衰されるため、振幅に比例する音圧が減衰した状態で運転者の耳に届く。すなわち、ヘルメットをかぶらない状態では、各音Ｎ１～Ｎ４は破線で示す振幅の音として聞こえるが、ヘルメットをかぶった状態では、各音Ｎ１～Ｎ４は、実線で示す振幅の音として聞こえる。このため、ヘルメットをかぶった状態の運転者には、他車両２００の音Ｎ２～Ｎ４などの環境音が聞こえ難くなるという問題がある。
　本実施の形態の制御部１１０は、マイクロフォン５０が集音した音情報に基づいて、音が発生する方向に音像（仮想音源）を定位してスピーカアレイ６０により、再生させる制御をおこなう。 Generally, when the driver wears a helmet, the helmet attenuates the amplitude of the surrounding sound, so that the sound pressure proportional to the amplitude is attenuated and reaches the driver's ear. That is, when the helmet is not worn, each sound N1 to N4 is heard as a sound having an amplitude shown by a broken line, but when the helmet is worn, each sound N1 to N4 is heard as a sound having an amplitude shown by a solid line. Therefore, there is a problem that it is difficult for the driver wearing a helmet to hear the environmental sounds such as the sounds N2 to N4 of the other vehicle 200.
The control unit 110 of the present embodiment controls the sound image (virtual sound source) to be localized in the direction in which the sound is generated and reproduced by the speaker array 60 based on the sound information collected by the microphone 50.
　制御部１１０のアプリ制御部１３１は、運転者が自車両１の周囲の音に注意を向けるべき所定の条件の状態を満たすか否かを判定し、所定の条件を満たす場合には、音像定位処理部１３２に音像定位処理の指示を出す制御を行う。本実施の形態のアプリ制御部１３１は、所定の条件の状態を満たすか否かとして、他車両２００が接近している状態にあるか否かを判定する。また、アプリ制御部１３１は、所定の条件の状態を満たすか否かとして、自車両１の運転行動の変化操作がされたか否かを判定する。 The application control unit 131 of the control unit 110 determines whether or not the driver satisfies a state of a predetermined condition for paying attention to the sound around the own vehicle 1, and if the predetermined condition is satisfied, the sound image localization. Control is performed to issue an instruction for sound image localization processing to the processing unit 132. The application control unit 131 of the present embodiment determines whether or not the other vehicle 200 is in the approaching state as whether or not the state of the predetermined condition is satisfied. Further, the application control unit 131 determines whether or not the driving behavior change operation of the own vehicle 1 has been performed as whether or not the state of the predetermined condition is satisfied.
　具体的には、アプリ制御部１３１は、マイクロフォン５０が集音した立体音響方式の音情報を監視制御する。すなわち、アプリ制御部１３１は、音入力部１４０からＤＳＰ１０２を介して制御部１１０に出力された音情報を監視制御する。アプリ制御部１３１は、マイクロフォン５０が集音した立体音響方式の音情報について、予め設定された周波数帯の音圧が所定の条件を満たすか否かを監視する。 Specifically, the application control unit 131 monitors and controls the sound information of the stereophonic system collected by the microphone 50. That is, the application control unit 131 monitors and controls the sound information output from the sound input unit 140 to the control unit 110 via the DSP 102. The application control unit 131 monitors whether or not the sound pressure in the preset frequency band satisfies a predetermined condition for the sound information of the stereophonic system collected by the microphone 50.
　本実施の形態では、アプリ制御部１３１は、他車排気音Ｎ２、他車ロードノイズ音Ｎ３、および、他車風切り音Ｎ４に基づく周波数帯の音圧を監視する。すなわち、アプリ制御部１３１は、音Ｎ２～Ｎ４に基づいて予め設定された周波数帯のそれぞれについて、音Ｎ２～Ｎ４の音情報が入力されるたびに、音圧について、入力時と所定時間前との差分値を演算し、この差分値が予め設定された閾値を越えるか否かを判定する。アプリ制御部１３１は、いずれかの差分値が予め設定された閾値を越えたと判定する場合には、例えば、図６に示すように、破線の状態から実線で示す状態へ他車両２００が移動中であり、他車両２００が自車両１に接近している状態にあると判定し、音像定位処理部１３２に、接近時の音像定位処理の指示を出す。なお、音Ｎ２～Ｎ４のいずれかの差分値が閾値を越えた場合に代えて、音Ｎ２～Ｎ４の全ての差分値が閾値を越えた場合にのみ、音像定位処理部１３２に、接近時の音像定位処理の指示を出してもよい。 In the present embodiment, the application control unit 131 monitors the sound pressure in the frequency band based on the other vehicle exhaust sound N2, the other vehicle road noise sound N3, and the other vehicle wind noise N4. That is, each time the sound information of the sounds N2 to N4 is input for each of the frequency bands preset based on the sounds N2 to N4, the application control unit 131 sets the sound pressure at the time of input and before a predetermined time. The difference value of is calculated, and it is determined whether or not this difference value exceeds a preset threshold value. When the application control unit 131 determines that any of the difference values exceeds a preset threshold value, for example, as shown in FIG. 6, the other vehicle 200 is moving from the state of the broken line to the state shown by the solid line. Therefore, it is determined that the other vehicle 200 is in a state of approaching the own vehicle 1, and an instruction for sound image localization processing at the time of approach is issued to the sound image localization processing unit 132. It should be noted that, instead of the case where the difference value of any of the sounds N2 to N4 exceeds the threshold value, only when all the difference values of the sounds N2 to N4 exceed the threshold value, the sound image localization processing unit 132 is approached. An instruction for sound image localization processing may be issued.
　また、本実施の形態のアプリ制御部１３１は、音Ｎ２～Ｎ４に基づいて予め設定された周波数帯のそれぞれについて、音Ｎ２～Ｎ４の音情報が入力されるたびに、音圧について予め設定された閾値を越えるか否かを判定する。アプリ制御部１３１は、音圧が予め設定された閾値を越えたと判定する場合には、例えば、図６の実線で示すように、他車両２００が自車両１に接近している状態にあると判定し、音像定位処理部１３２に、接近時の音像定位処理の指示を出す。なお、この閾値としては、音Ｎ２～Ｎ４毎に、図７に示す実線と破線との間の値に基づいて閾値を設定可能である。 Further, the application control unit 131 of the present embodiment presets the sound pressure for each of the preset frequency bands based on the sounds N2 to N4 each time the sound information of the sounds N2 to N4 is input. It is determined whether or not the threshold value is exceeded. When the application control unit 131 determines that the sound pressure exceeds a preset threshold value, for example, as shown by the solid line in FIG. 6, the other vehicle 200 is in a state of approaching the own vehicle 1. After making a determination, the sound image localization processing unit 132 is instructed to perform sound image localization processing when approaching. As the threshold value, the threshold value can be set for each sound N2 to N4 based on the value between the solid line and the broken line shown in FIG. 7.
　さらに、アプリ制御部１３１は、自車両１の運転行動の変化操作がされたか否かを判定するために、スロットル検出部７２と、ウインカースイッチ検出部７３と、ブレーキスイッチ検出部７４とのセンサデータを監視する。
　アプリ制御部１３１は、スロットル検出部７２によりスロットル操作がされているというセンサデータが入力された場合には、音像定位処理部１３２に、スロットル操作時の音像定位処理の指示を出す。 Further, the application control unit 131 has sensor data of the throttle detection unit 72, the turn signal switch detection unit 73, and the brake switch detection unit 74 in order to determine whether or not the driving behavior change operation of the own vehicle 1 has been performed. To monitor.
When the sensor data indicating that the throttle is being operated by the throttle detection unit 72 is input, the application control unit 131 issues an instruction to the sound image localization processing unit 132 for the sound image localization processing at the time of the throttle operation.
　また、アプリ制御部１３１は、ウインカースイッチ検出部７３により、左方向指示操作がされているというセンサデータが入力された場合には、音像定位処理部１３２に、左方向指示操作時の音像定位処理の指示を出す。また、アプリ制御部１３１は、ウインカースイッチ検出部７３により、右方向指示操作がされているというセンサデータが入力された場合には、音像定位処理部１３２に、右方向指示操作時の音像定位処理の指示を出す。 Further, when the sensor data indicating that the left direction instruction operation is performed is input by the turn signal switch detection unit 73, the application control unit 131 causes the sound image localization processing unit 132 to perform sound image localization processing during the left direction instruction operation. Give instructions. Further, when the sensor data indicating that the right direction instruction operation is performed is input by the turn signal switch detection unit 73, the application control unit 131 causes the sound image localization processing unit 132 to perform sound image localization processing during the right direction instruction operation. Give instructions.
　さらに、アプリ制御部１３１は、ブレーキスイッチ検出部７４によりブレーキ操作がされているというセンサデータが入力された場合には、音像定位処理部１３２に、ブレーキ操作時の音像定位処理の指示を出す。 Further, when the sensor data that the brake operation is performed by the brake switch detection unit 74 is input, the application control unit 131 issues an instruction to the sound image localization processing unit 132 for the sound image localization processing at the time of the brake operation.
　図４において、音像定位処理部１３２は、ＤＳＰ１０２や信号増幅部１６０を制御して、音像の位置を定めて音像を再生出力する音像定位処理を実行する。音像とは、仮想的な音源のことであり、定位とは、位置を定めることを意味する。すなわち、スピーカアレイ６０から出力される音を聞いた運転者等に、音像定位処理部１３２が定めた位置に音源が存在するかのように知覚させることを意味する。音像定位処理部１３２は、音出力部１５０が備える第１スピーカ６１～第８スピーカ６８に出力させる音の音量を制御することで、音像の定位位置を変更する。 In FIG. 4, the sound image localization processing unit 132 controls the DSP 102 and the signal amplification unit 160 to perform sound image localization processing for determining the position of the sound image and reproducing and outputting the sound image. A sound image is a virtual sound source, and localization means determining a position. That is, it means that the driver or the like who hears the sound output from the speaker array 60 is made to perceive as if the sound source exists at the position determined by the sound image localization processing unit 132. The sound image localization processing unit 132 changes the localization position of the sound image by controlling the volume of the sound output to the first speaker 61 to the eighth speaker 68 included in the sound output unit 150.
　本実施の形態の音像定位処理部１３２は、運転者等が自車両１の周囲の音に注意を向けるべき所定の条件の状態を満たす場合のみ、特定の方向に音像（仮想音源）を発生させたり、音像（仮想音源）の音量を増大させる制御を行う。本実施の形態では、所定の条件の状態を満たす場合にのみ、スピーカアレイ６０により音像を再生する制御を行うため、省エネルギーにできる。 The sound image localization processing unit 132 of the present embodiment generates a sound image (virtual sound source) in a specific direction only when a predetermined condition for the driver or the like to pay attention to the sound around the own vehicle 1 is satisfied. Or control to increase the volume of the sound image (virtual sound source). In the present embodiment, the speaker array 60 controls to reproduce the sound image only when a predetermined condition is satisfied, so that energy saving can be achieved.
　具体的には、アプリ制御部１３１により音像定位処理が指示された場合に、マイクロフォン５０の音情報に基づいて音像定位処理を実行する。
　まず、音像定位処理部１３２は、順次入力されるマイクロフォン５０の集音した立体音響方式の音情報に基づいて、他車両２００の方向や、他車両２００の音Ｎ２～Ｎ４の音量を特定する。他車両２００の方向や、他車両の音Ｎ２～Ｎ４の音量は、第１マイクロフォン５１と第２マイクロフォン５２への音Ｎ１～Ｎ４の到達時間の差分や、自車両１の車速に基づく周波数変化などに基づいて特定可能である。この特定処理は演算処理で行っても良いし、自車両１の車速と、音Ｎ１～Ｎ４の周波数と振幅との関係を予め記憶したマップ情報を参照して、順次入力されるマイクロフォン５０の集音した立体音響方式の音情報に基づいて、他車両２００の方向や、他車両２００の音Ｎ２～Ｎ４の音量を特定してもよい。 Specifically, when the sound image localization process is instructed by the application control unit 131, the sound image localization process is executed based on the sound information of the microphone 50.
First, the sound image localization processing unit 132 specifies the direction of the other vehicle 200 and the volume of the sounds N2 to N4 of the other vehicle 200 based on the sound information of the stereophonic system collected by the microphone 50 that is sequentially input. The direction of the other vehicle 200 and the volume of the sounds N2 to N4 of the other vehicle are the difference in the arrival times of the sounds N1 to N4 to the first microphone 51 and the second microphone 52, the frequency change based on the vehicle speed of the own vehicle 1, and the like. It can be specified based on. This specific processing may be performed by arithmetic processing, or is a collection of microphones 50 that are sequentially input by referring to the map information that stores the relationship between the vehicle speed of the own vehicle 1 and the frequencies and amplitudes of the sounds N1 to N4 in advance. The direction of the other vehicle 200 and the volume of the sounds N2 to N4 of the other vehicle 200 may be specified based on the sound information of the three-dimensional sound system.
　図８は、接近時の音像定位処理で決定される周囲音Ｎ２～Ｎ４の周波数スペクトルを示す図である。
　音像定位処理部１３２は、接近時の音像定位処理が指示された場合には、特定された他車両２００の方向を、音Ｎ２～Ｎ４を再生するための音像を定位させる方向として決定すると共に、図８に示すように、音Ｎ２～Ｎ４の音像の音量を、運転者がヘルメットをした状態で、ヘルメットをしていない状態と同様に聞こえるように増幅された音量に決定する。自車風切り音Ｎ１については、音量を増幅しない。 FIG. 8 is a diagram showing the frequency spectra of ambient sounds N2 to N4 determined by the sound image localization process at the time of approach.
When the sound image localization process at the time of approach is instructed, the sound image localization processing unit 132 determines the direction of the specified other vehicle 200 as the direction in which the sound image for reproducing the sounds N2 to N4 is localized. As shown in FIG. 8, the volume of the sound image of the sounds N2 to N4 is determined to be an amplified volume so that the driver can hear the sound in the state of wearing a helmet as if he / she is not wearing a helmet. The volume of the own vehicle wind noise N1 is not amplified.
　また、音像定位処理部１３２は、スロットル操作時の音像定位処理の指示を受けた場合には、順次入力されるマイクロフォン５０の立体音響方式の音情報に基づいて、自車両１の前方の音量が大きく聞こえるように、音像の音量を増幅した音量に決定すると共に、音像の定位の方向を自車両１の前方に決定する。 Further, when the sound image localization processing unit 132 receives an instruction for sound image localization processing at the time of throttle operation, the volume in front of the own vehicle 1 is increased based on the sound information of the stereophonic method of the microphone 50 which is sequentially input. The volume of the sound image is determined to be an amplified volume so that the sound image can be heard loudly, and the direction of localization of the sound image is determined to be in front of the own vehicle 1.
　さらに、音像定位処理部１３２は、左方向指示操作時の音像定位処理の指示を受けた場合には、順次入力されるマイクロフォン５０の立体音響方式の音情報に基づいて、自車両１の左方の音量が大きく聞こえるように、音像の音量を増幅した音量に決定すると共に、音像の定位の方向を自車両１の左方に決定する。また、音像定位処理部１３２は、右方向指示操作時の音像定位処理の指示を受けた場合には、順次入力されるマイクロフォン５０の立体音響方式の音情報に基づいて、自車両１の右方の音量が大きく聞こえるように、音像の音量を増幅した音量に決定すると共に、音像の定位の方向を自車両１の右方に決定する。 Further, when the sound image localization processing unit 132 receives an instruction for sound image localization processing at the time of the left direction instruction operation, the sound image localization processing unit 132 is on the left side of the own vehicle 1 based on the sound information of the stereophonic method of the microphone 50 which is sequentially input. The volume of the sound image is determined to be an amplified volume so that the volume of the sound image can be heard loudly, and the direction of localization of the sound image is determined to the left of the own vehicle 1. Further, when the sound image localization processing unit 132 receives the instruction of the sound image localization processing at the time of the right direction instruction operation, the sound image localization processing unit 132 is to the right of the own vehicle 1 based on the sound information of the stereophonic method of the microphone 50 which is sequentially input. The volume of the sound image is determined to be an amplified volume so that the volume of the sound image can be heard loudly, and the direction of localization of the sound image is determined to the right of the own vehicle 1.
　また、音像定位処理部１３２は、ブレーキ操作時の音像定位処理の指示を受けた場合には、順次入力されるマイクロフォン５０の立体音響方式の音情報に基づいて、自車両１の後方の音量が大きく聞こえるように、音像の音量を増幅した音量に決定すると共に、音像の定位の方向を自車両１の後方に決定する。 Further, when the sound image localization processing unit 132 receives an instruction for sound image localization processing at the time of brake operation, the volume behind the own vehicle 1 is increased based on the sound information of the stereophonic method of the microphone 50 which is sequentially input. The volume of the sound image is determined to be an amplified volume so that the sound image can be heard loudly, and the direction of localization of the sound image is determined to be behind the own vehicle 1.
　そして、音像定位処理部１３２は、音像の音量、及び、音像を定位させる方向を決定すると、決定した音量及び定位させる方向となるように、信号増幅部１６０及びＤＳＰ１０２を制御して、スピーカアレイ６０により、マイクロフォン５０が集音した音が発生する方向に音像を定位して再生する制御をおこなう。 Then, when the sound image localization processing unit 132 determines the volume of the sound image and the direction in which the sound image is localized, the speaker array 60 controls the signal amplification unit 160 and the DSP 102 so as to have the determined volume and the direction in which the sound image is localized. This controls the microphone 50 to localize and reproduce the sound image in the direction in which the collected sound is generated.
　図９は、制御部１１０の動作を示すフローチャートである。
　図９を参照しながら制御部１１０の動作について説明する。
　制御部１１０は、例えば、操作部３５により環境音の音像定位処理の実行の入力を受け付けることにより、制御処理を開始可能である。
　制御部１１０は、処理を開始すると、マイクロフォン５０から入力された音情報を監視する（ステップＳ１）。
　制御部１１０は、マイクロフォン５０から入力された音情報に基づいて、接近車両の有無を判定する（ステップＳ２）。 FIG. 9 is a flowchart showing the operation of the control unit 110.
The operation of the control unit 110 will be described with reference to FIG.
The control unit 110 can start the control process by receiving, for example, the input of the execution of the sound image localization process of the environmental sound by the operation unit 35.
When the control unit 110 starts the process, the control unit 110 monitors the sound information input from the microphone 50 (step S1).
The control unit 110 determines the presence or absence of an approaching vehicle based on the sound information input from the microphone 50 (step S2).
　制御部１１０は、自車両１に他車両２００が接近していると判定した場合（ステップＳ２／ＹＥＳ）、定位方向の音源増幅処理を実行する（ステップＳ４）。
　制御部１１０は、自車両１に他車両２００が近接していないと判定する場合（ステップＳ２／ＮＯ）、運転行動の変化操作の入力の有無を判定する（ステップＳ４）。
　制御部１１０は、運転行動の変化操作の入力がないと判定する場合（ステップＳ４／ＮＯ）、ステップＳ１の処理に移行する。 When the control unit 110 determines that the other vehicle 200 is approaching the own vehicle 1 (step S2 / YES), the control unit 110 executes the sound source amplification process in the localization direction (step S4).
When the control unit 110 determines that the other vehicle 200 is not close to the own vehicle 1 (step S2 / NO), the control unit 110 determines whether or not a driving behavior change operation is input (step S4).
When the control unit 110 determines that there is no input for the change operation of the driving behavior (step S4 / NO), the control unit 110 shifts to the process of step S1.
　制御部１１０は、定位方向の音源増幅処理を実行する場合（ステップＳ４）において、近接車両を検知している場合には、他車両２００の方向を、音像を定位させる方向として決定すると共に、他車両２００の音Ｎ２～Ｎ４の音像の音量を増幅された音量に決定する。
　また、制御部１１０は、定位方向の音源増幅処理を実行する場合（ステップＳ４）において、スロットル操作を検知している場合には、自車両１の前方の音量が大きく聞こえるように、音像について、増幅した音量に決定すると共に、定位の方向を自車両１の前方に決定する。 When the control unit 110 executes the sound source amplification process in the localization direction (step S4), when detecting a nearby vehicle, the control unit 110 determines the direction of the other vehicle 200 as the direction in which the sound image is localized, and the other. The volume of the sound image of the sound N2 to N4 of the vehicle 200 is determined to be the amplified volume.
Further, when the control unit 110 executes the sound source amplification process in the localization direction (step S4), when the throttle operation is detected, the control unit 110 controls the sound image so that the volume in front of the own vehicle 1 can be heard loudly. The amplified volume is determined, and the localization direction is determined in front of the own vehicle 1.
　また、制御部１１０は、定位方向の音源増幅処理を実行する場合（ステップＳ４）において、左方向指示操作を検知している場合には、自車両１の左方の音量が大きく聞こえるように、音像について、増幅した音量に決定すると共に、定位の方向を自車両１の左方に決定する。
　また、制御部１１０は、定位方向の音源増幅処理を実行する場合（ステップＳ４）において、右方向指示操作を検知している場合には、自車両１の右方の音量が大きく聞こえるように、音像について、増幅した音量に決定すると共に、定位の方向を自車両１の右方に決定する。 Further, when the control unit 110 executes the sound source amplification process in the localization direction (step S4), when the left direction instruction operation is detected, the control unit 110 can hear the volume on the left side of the own vehicle 1 loudly. Regarding the sound image, the amplified volume is determined, and the localization direction is determined to the left of the own vehicle 1.
Further, when the control unit 110 executes the sound source amplification process in the localization direction (step S4), when the right direction instruction operation is detected, the control unit 110 so that the volume on the right side of the own vehicle 1 can be heard loudly. Regarding the sound image, the amplified volume is determined, and the localization direction is determined to the right of the own vehicle 1.
　また、制御部１１０は、定位方向の音源増幅処理を実行する場合（ステップＳ４）において、ブレーキ操作を検知している場合には、自車両１の後方の音量が大きく聞こえるように、音像について、増幅した音量に決定すると共に、定位の方向を自車両１の後方に決定する。 Further, when the control unit 110 executes the sound source amplification process in the localization direction (step S4), when the brake operation is detected, the control unit 110 controls the sound image so that the volume behind the own vehicle 1 can be heard loudly. The amplified volume is determined, and the localization direction is determined behind the own vehicle 1.
　制御部１１０は、定位方向の音源増幅処理を実行した後に、ステップＳ４で決定した音量、及び、定位の位置となるようにＤＳＰ１０２や信号増幅部１６０を制御して、目標定位位置で音像の出力をする（ステップＳ５）。
　制御部１１０は、ステップＳ１の処理に移行する。 After executing the sound source amplification process in the localization direction, the control unit 110 controls the DSP 102 and the signal amplification unit 160 so as to have the volume determined in step S4 and the localization position, and outputs the sound image at the target localization position. (Step S5).
The control unit 110 shifts to the process of step S1.
　本実施の形態では、自車両（自動二輪車）１が走行する場合に、自車両１のマイクロフォン５０により周囲の音が集音される。
　この際に、自車両１では、集音された周囲の音に基づいて、他車両２００の接近の有無が判定される。 In the present embodiment, when the own vehicle (motorcycle) 1 travels, the ambient sound is collected by the microphone 50 of the own vehicle 1.
At this time, the own vehicle 1 determines whether or not the other vehicle 200 is approaching based on the collected surrounding sounds.
　ここで、ヘルメットをかぶった状態では、運転者等の耳には、音が音圧が減衰された状態で届くため、環境音に変化があっても音圧の変化が微小になり易い。このため、運転者は、環境音に基づいては、他車両２００が接近したことに気づき難かった。これに対して、本実施の形態では、他車両２００が接近した場合には、音源定位処理が行われ、他車両２００の方向に音像が定位されると共に、他車両２００の音Ｎ２～Ｎ４が増幅されて大きく再生される。したがって、ヘルメットをかぶった状態の運転者等にとっても、他車両２００が接近していることを、環境音に基づいて認識し易くなっている。特に、本実施の形態では、この場合に、全ての環境音を大きくするわけではなく、他車両２００の音Ｎ２～Ｎ４のみを大きくするため、運転者等が注意をすべき周囲の音のみを聞き取り易くなっている。 Here, when the helmet is worn, the sound reaches the ears of the driver or the like in a state where the sound pressure is attenuated, so that even if there is a change in the environmental sound, the change in the sound pressure tends to be small. Therefore, it is difficult for the driver to notice that the other vehicle 200 has approached based on the environmental sound. On the other hand, in the present embodiment, when the other vehicle 200 approaches, the sound source localization process is performed, the sound image is localized in the direction of the other vehicle 200, and the sounds N2 to N4 of the other vehicle 200 are produced. It is amplified and reproduced greatly. Therefore, even for a driver or the like wearing a helmet, it is easy to recognize that the other vehicle 200 is approaching based on the environmental sound. In particular, in the present embodiment, in this case, not all the environmental sounds are made loud, but only the sounds N2 to N4 of the other vehicle 200 are made loud, so that only the ambient sounds that the driver or the like should pay attention to are made loud. It is easy to hear.
　また、本実施の形態の自動二輪車１では、運転者が、自車両１の運転行動の変化操作をした場合には、変化操作により自車両１が移動すると予想される方向の環境音が大きく増幅される。よって、運転者等がヘルメットをかぶった状態でも、自車両１が移動する方向の環境音を聞き取り易く、移動方向の状況を環境音に基づいて認識し易くなっている。 Further, in the motorcycle 1 of the present embodiment, when the driver performs a change operation of the driving behavior of the own vehicle 1, the environmental sound in the direction in which the own vehicle 1 is expected to move due to the change operation is greatly amplified. Will be done. Therefore, even when the driver or the like wears a helmet, it is easy to hear the environmental sound in the direction in which the own vehicle 1 moves, and it is easy to recognize the situation in the moving direction based on the environmental sound.
　以上説明したように本実施形態の車両は、複数のスピーカ６１～６８で構成されるスピーカアレイ６０を搭載した自車両１であって、スピーカアレイ６０により音像の定位を変化可能に構成されており、自車両１には自車両１の周囲の音を集音するマイクロフォン５０が備えられており、スピーカアレイ６０は、マイクロフォン５０が集音した音情報を音が発生する方向に定位して再生する。したがって、音像により周囲の音を発生方向から再生することでヘルメットをかぶった状態でも環境音を聞き取り易くできる。 As described above, the vehicle of the present embodiment is the own vehicle 1 equipped with the speaker array 60 composed of a plurality of speakers 61 to 68, and is configured so that the localization of the sound image can be changed by the speaker array 60. The own vehicle 1 is provided with a microphone 50 that collects sounds around the own vehicle 1, and the speaker array 60 localizes and reproduces the sound information collected by the microphone 50 in the direction in which the sound is generated. .. Therefore, by reproducing the surrounding sound from the generation direction by the sound image, it is possible to easily hear the environmental sound even when wearing a helmet.
　本実施の形態では、スピーカアレイ６０は、運転者が自車両１の周囲の音に注意すべき所定の条件の状態でのみ、特定の方向に仮想音源を発生させる、または、仮想音源の音量を増大させる。したがって、常時、スピーカアレイ６０により、仮想音源を発生させたり、仮想音源の音量を増大させる場合に比べて、省エネルギーにすることができる。 In the present embodiment, the speaker array 60 generates a virtual sound source in a specific direction or raises the volume of the virtual sound source only under predetermined conditions under which the driver should pay attention to the sound around the own vehicle 1. Increase. Therefore, the speaker array 60 can save energy as compared with the case where a virtual sound source is always generated or the volume of the virtual sound source is increased.
　また、本実施の形態では、運転者が自車両１の周囲の音に注意すべき所定の条件は、他車両２００が接近していることを検知したときであり、その際の特定の方向とは他車両２００が存在する方向である。したがって、他車両２００がどの方向から自車両１に接近するかを認識し易くできる。 Further, in the present embodiment, the predetermined condition that the driver should pay attention to the sound around the own vehicle 1 is when it is detected that the other vehicle 200 is approaching, and the specific direction at that time. Is the direction in which the other vehicle 200 exists. Therefore, it is possible to easily recognize from which direction the other vehicle 200 approaches the own vehicle 1.
　また、本実施の形態では、他車両２００が接近していることの検知は、マイクロフォン５０が集音する音情報の特定の周波数帯の音圧が所定時間内に増大したことをもって行う。したがって、マイクロフォン５０以外の検知手段を用いずに、他車両２００が接近していることを検知することができる。 Further, in the present embodiment, the detection that the other vehicle 200 is approaching is performed when the sound pressure in a specific frequency band of the sound information collected by the microphone 50 increases within a predetermined time. Therefore, it is possible to detect that another vehicle 200 is approaching without using a detection means other than the microphone 50.
　また、本実施の形態では、他車両２００が接近していることの検知は、マイクロフォン５０が集音する音情報の特定の周波数帯の音圧が所定の閾値を越えたことをもって行う。したがって、マイクロフォン５０以外の検知手段を用いずに、他車両２００が接近していることを検知することができる。 Further, in the present embodiment, the detection that the other vehicle 200 is approaching is performed when the sound pressure in a specific frequency band of the sound information collected by the microphone 50 exceeds a predetermined threshold value. Therefore, it is possible to detect that another vehicle 200 is approaching without using a detection means other than the microphone 50.
　また、本実施の形態では、運転者が自車両１の周囲の音に注意すべき所定の条件は、自車両１の操作を検知したときであり、その際の特定の方向とは、その操作と関連する方向である。したがって、自車両１が操作により移動する方向の音を聞き易くすることができる。 Further, in the present embodiment, the predetermined condition that the driver should pay attention to the sound around the own vehicle 1 is when the operation of the own vehicle 1 is detected, and the specific direction at that time is the operation. It is a direction related to. Therefore, it is possible to easily hear the sound in the direction in which the own vehicle 1 moves by the operation.
　また、本実施の形態では、検知される自車両１の操作は、ウインカー操作であり、特定の方向とは自車両１の右方、または、左方である。したがって、ウインカー操作を検知した場合には、ウインカー操作により自車両１が移動すると想定される方向の右方または左方の音を聞き易くすることができる。 Further, in the present embodiment, the detected operation of the own vehicle 1 is a turn signal operation, and the specific direction is the right side or the left side of the own vehicle 1. Therefore, when the turn signal operation is detected, it is possible to easily hear the right or left sound in the direction in which the own vehicle 1 is assumed to move due to the turn signal operation.
　また、本実施の形態では、検知される自車両１の操作は、ブレーキ操作であり、特定の方向とは自車両１の後方である。したがって、ブレーキ操作を検知した場合には、ブレーキ操作により自車両１が相対的に移動すると想定される後方の音を聞き易くすることができる。 Further, in the present embodiment, the detected operation of the own vehicle 1 is a brake operation, and the specific direction is the rear of the own vehicle 1. Therefore, when the brake operation is detected, it is possible to easily hear the sound behind the vehicle 1 which is assumed to move relatively due to the brake operation.
　また、本実施の形態では、検知される自車両１の操作は、スロットル操作であり、特定の方向とは自車両１の前方である。したがって、スロットル操作を検知した場合には、スロットル操作により自車両１が移動すると想定される前方の音を聞き易くすることができる。 Further, in the present embodiment, the detected operation of the own vehicle 1 is a throttle operation, and the specific direction is the front of the own vehicle 1. Therefore, when the throttle operation is detected, it is possible to easily hear the sound in front of the vehicle 1 which is assumed to move due to the throttle operation.
　なお、上記実施の形態は本発明を適用した一態様を示すものであって、本発明は上記実施の形態に限定されるものではない。
　マイクロフォン５０は、第１マイクロフォン５１と第２マイクロフォン５２とを備える構成を限定したが、マイクロフォンを３つ以上を備えてもよく、マイクロフォン５０が立体音響方式で集音できればよい。
　スピーカアレイ６０は、自動二輪車（車両）１に搭載される構成を説明した。ここで、スピーカアレイ６０が車両に「搭載」されるとは、スピーカアレイ６０が車体上に直接固定される場合に限らず、ステーなどにより間接的に車体に固定される場合も含む。よって、例えば、スピーカアレイ６０が車体フレーム１０に直接固定される構成に限らず、車体フレーム１０とは別体のステーを介して車体フレーム１０に間接的に固定される構成でもよいし、車体カバー２２を介して車体フレーム１０に間接的に固定される構成でもよい。また、車体カバー２２とは別体のステーを介して、スピーカアレイ６０が車体カバー２２に固定される構成でもよい。すなわち、スピーカアレイ６０が車両に「搭載」されるとは、スピーカアレイ６０と車両とが一体となって移動（運動）する状態を含む趣旨で用いている。
　スピーカアレイ６０は表示部３０の前方に配置された構成を説明したが、例えば、シート１４の左右や、後方にスピーカを配置してもよい。
　上記実施の形態では、鞍乗り型車両として自動二輪車１を例に挙げて説明したが、本発明はこれに限定されるものではなく、本発明は、前輪または後輪を２つ備えた３輪の鞍乗り型車両や４輪以上を備えた鞍乗り型車両に適用可能である。 It should be noted that the above embodiment shows one aspect to which the present invention is applied, and the present invention is not limited to the above embodiment.
The microphone 50 is limited to include the first microphone 51 and the second microphone 52, but may include three or more microphones, as long as the microphone 50 can collect sound in a stereophonic manner.
The configuration in which the speaker array 60 is mounted on the motorcycle (vehicle) 1 has been described. Here, the term "mounted" on the vehicle body of the speaker array 60 includes not only the case where the speaker array 60 is directly fixed on the vehicle body but also the case where the speaker array 60 is indirectly fixed to the vehicle body by a stay or the like. Therefore, for example, the speaker array 60 is not limited to the configuration in which the speaker array 60 is directly fixed to the vehicle body frame 10, but may be configured to be indirectly fixed to the vehicle body frame 10 via a stay separate from the vehicle body frame 10. It may be configured to be indirectly fixed to the vehicle body frame 10 via the 22. Further, the speaker array 60 may be fixed to the vehicle body cover 22 via a stay separate from the vehicle body cover 22. That is, the fact that the speaker array 60 is "mounted" on the vehicle is used to include a state in which the speaker array 60 and the vehicle move (exercise) together.
Although the speaker array 60 has been described as being arranged in front of the display unit 30, for example, speakers may be arranged on the left and right sides of the seat 14 or behind the display unit 30.
In the above embodiment, the motorcycle 1 is taken as an example as a saddle-riding vehicle, but the present invention is not limited to this, and the present invention is a three-wheeled vehicle including two front wheels or two rear wheels. It is applicable to saddle-riding vehicles and saddle-riding vehicles equipped with four or more wheels.
　１　自動二輪車（自車両、車両）
　５０　マイクロフォン
　６０　スピーカアレイ
　６１　第１スピーカ
　６２　第２スピーカ
　６３　第３スピーカ
　６４　第４スピーカ
　６５　第５スピーカ
　６６　第６スピーカ
　６７　第７スピーカ
　６８　第８スピーカ
　２００　他の車両
  1 Motorcycle (own vehicle, vehicle)
50 Microphone 60 Speaker Array 61 1st Speaker 62 2nd Speaker 63 3rd Speaker 64 4th Speaker 65 5th Speaker 66 6th Speaker 67 7th Speaker 68 8th Speaker 200 Other Vehicles

Claims (9)

  1. 　複数のスピーカ（６１～６８）で構成されるスピーカアレイ（６０）を搭載した車両（１）であって、
    　該スピーカアレイ（６０）により仮想音源の定位を変化可能に構成されており、
    　前記車両（１）には車両周囲の音を集音するマイクロフォン（５０）が備えられており、
    　前記スピーカアレイ（６０）は、該マイクロフォン（５０）が集音した音情報を該音が発生する方向に定位して再生することを特徴とする車両。     A vehicle (1) equipped with a speaker array (60) composed of a plurality of speakers (61 to 68).
    The speaker array (60) is configured to be able to change the localization of the virtual sound source.
    The vehicle (1) is equipped with a microphone (50) that collects sounds around the vehicle.
    The speaker array (60) is a vehicle characterized in that sound information collected by the microphone (50) is localized and reproduced in a direction in which the sound is generated.
  2. 　前記スピーカアレイ（６０）は、乗員が前記車両周囲の音に注意を向けるべき所定の条件の状態でのみ、特定の方向に仮想音源を発生させる、または、仮想音源の音量を増大させることを特徴とする請求項１に記載の車両。 The speaker array (60) is characterized in that a virtual sound source is generated in a specific direction or the volume of the virtual sound source is increased only under predetermined conditions under which the occupant should pay attention to the sound around the vehicle. The vehicle according to claim 1.
  3. 　前記所定の条件は、他の車両（２００）が接近していることを検知したときであり、前記特定の方向とは前記他の車両（２００）が存在する方向であることを特徴とする請求項２に記載の車両。 The predetermined condition is when it is detected that another vehicle (200) is approaching, and the specific direction is the direction in which the other vehicle (200) is present. The vehicle according to item 2.
  4. 　前記他の車両（２００）が接近していることの検知は、前記マイクロフォン（５０）が集音する音情報の特定の周波数帯の音圧が所定時間内に増大したことをもって行うことを特徴とする請求項３に記載の車両。 The detection that the other vehicle (200) is approaching is characterized in that the sound pressure in a specific frequency band of the sound information collected by the microphone (50) increases within a predetermined time. The vehicle according to claim 3.
  5. 　前記他の車両（２００）が接近していることの検知は、前記マイクロフォン（５０）が集音する音情報の特定の周波数帯の音圧が所定の閾値を越えたことをもって行うことを特徴とする請求項３又は４に記載の車両。 The detection that the other vehicle (200) is approaching is characterized in that the sound pressure in a specific frequency band of the sound information collected by the microphone (50) exceeds a predetermined threshold value. The vehicle according to claim 3 or 4.
  6. 　前記所定の条件は、前記車両（１）の操作を検知したときであり、前記特定の方向とは該操作と関連する方向あることを特徴とする請求項２に記載の車両。 The vehicle according to claim 2, wherein the predetermined condition is when the operation of the vehicle (1) is detected, and the specific direction is a direction related to the operation.
  7. 　前記操作は、ウインカー操作であり、前記特定の方向とは前記車両（１）の右方、または、左方であることを特徴とする請求項６に記載の車両。 The vehicle according to claim 6, wherein the operation is a turn signal operation, and the specific direction is to the right or left of the vehicle (1).
  8. 　前記操作は、ブレーキ操作であり、前記特定の方向とは前記車両（１）の後方であることを特徴とする請求項６に記載の車両。 The vehicle according to claim 6, wherein the operation is a brake operation, and the specific direction is behind the vehicle (1).
  9. 　前記操作は、スロットル操作であり、前記特定の方向とは前記車両（１）の前方であることを特徴とする請求項６に記載の車両。
          The vehicle according to claim 6, wherein the operation is a throttle operation, and the specific direction is in front of the vehicle (1).
PCT/JP2021/009094 2020-06-02 2021-03-08 Vehicle WO2021246014A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0592767U (en) * 1992-05-18 1993-12-17 株式会社豊田中央研究所 Approaching vehicle recognition device
JPH1142988A (en) * 1997-07-25 1999-02-16 Yazaki Corp Vehicle rear monitoring method and vehicle rear monitoring device
JP2007036610A (en) * 2005-07-26 2007-02-08 Yamaha Corp Sound production device
JP2012173211A (en) * 2011-02-23 2012-09-10 Toyota Motor Corp Approaching vehicle detection device and approaching vehicle detection method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0592767U (en) * 1992-05-18 1993-12-17 株式会社豊田中央研究所 Approaching vehicle recognition device
JPH1142988A (en) * 1997-07-25 1999-02-16 Yazaki Corp Vehicle rear monitoring method and vehicle rear monitoring device
JP2007036610A (en) * 2005-07-26 2007-02-08 Yamaha Corp Sound production device
JP2012173211A (en) * 2011-02-23 2012-09-10 Toyota Motor Corp Approaching vehicle detection device and approaching vehicle detection method

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