WO2021192072A1 - Indoor sound environment generation apparatus, sound source apparatus, indoor sound environment generation method, and sound source apparatus control method - Google Patents

Indoor sound environment generation apparatus, sound source apparatus, indoor sound environment generation method, and sound source apparatus control method Download PDF

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Publication number
WO2021192072A1
WO2021192072A1 PCT/JP2020/013201 JP2020013201W WO2021192072A1 WO 2021192072 A1 WO2021192072 A1 WO 2021192072A1 JP 2020013201 W JP2020013201 W JP 2020013201W WO 2021192072 A1 WO2021192072 A1 WO 2021192072A1
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WO
WIPO (PCT)
Prior art keywords
sound
user
sound source
control
indoor
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PCT/JP2020/013201
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French (fr)
Japanese (ja)
Inventor
尚志 永野
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ヤマハ株式会社
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Priority to PCT/JP2020/013201 priority Critical patent/WO2021192072A1/en
Publication of WO2021192072A1 publication Critical patent/WO2021192072A1/en

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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems

Definitions

  • One embodiment of the present invention relates to an indoor sound environment generation device, a sound source device, an indoor sound environment generation method, and a control method of the sound source device.
  • Patent Documents 1 and 2 disclose a device that outputs a sound that induces sleep to a user who wants to go to bed.
  • Patent Document 1 discloses an acoustic processing device that generates an audio signal to a speaker so as to recognize a sound image three-dimensionally.
  • Patent Document 2 discloses a sound source device that outputs different sounds depending on the state of the user.
  • the device of Patent Document 1 does not output sound according to the state of the user. For example, a user who takes a sleeping posture may want to go to bed or wake up.
  • one of the objects of the embodiment of the present invention is an indoor sound environment generator, a sound source device, an indoor sound environment generation method, and a sound source device that output a sound that can be guided to a desired state according to a user's state. Is to provide a control method for.
  • the indoor sound environment generator acquires a sound signal acquisition unit that acquires a sound signal, a sound signal output unit that outputs a sound signal, a biometric information acquisition unit that acquires the biometric information of the user, and a user's position information. It includes a position information acquisition unit to be acquired and a control unit that controls the sound image localization of the sound signal based on the biometric information and the position information.
  • the sound source device determines a biometric information acquisition unit that acquires the biometric information of the user, a plurality of sound source units, and a control table for controlling the plurality of sound source units based on the biometric information, and the determined control table.
  • a control unit that controls the plurality of sound source units based on the above, and a reading unit that reads a sound source from the plurality of sound source units according to the control of the control unit.
  • FIG. 1 is a schematic view showing a configuration of a sound reproduction system 1 including a sound source device 20 according to the first embodiment.
  • the sound reproduction system 1 includes a sensor 11, a sensor 12, a sensor 13, a sound source device 20, a speaker 51, and a speaker 52.
  • the sound reproduction system 1 causes the user E, who is lying on his back on the bed 5, to hear the sound emitted from the speaker 51 and the speaker 52.
  • the sounds emitted by the speaker 51 and the speaker 52 include, for example, a sound for introducing sleep, a sound for awakening, and the like.
  • the speaker 51 and the speaker 52 are arranged at predetermined positions away from the bed 5. In the example of FIG. 1, the sound is emitted toward the user E in the direction toward the feet of the user E.
  • the speaker 51 amplifies the stereo left (L) channel sound signal output from the sound source device 20 by the built-in amplifier and emits the sound.
  • the speaker 52 amplifies the sound signal of the stereo right (L) channel output from the sound source device 20 by the built-in amplifier and emits the sound.
  • the sensor 11 is attached to the wrist of the user E.
  • the sensor 12 is laid under the pillow.
  • the sensor 13 is laid on the bed.
  • the sensor 11, the sensor 12, and the sensor 13 detect biological information such as the pulse, respiration, body movement, brain wave, and blood pressure of the user E.
  • the sensor 11, the sensor 12, and the sensor 13 have a wireless communication function.
  • the sensor 11, the sensor 12, and the sensor 13 transmit the detected biological information to the sound source device 20.
  • the number of sensors that detect biological information is not limited to three as in the present embodiment.
  • the number of sensors may be one, two, or four or more.
  • the biological information is not limited to the example shown in this embodiment. Further, at least one biological information may be detected.
  • the wireless communication function is not essential.
  • the sensor 11, the sensor 12, and the sensor 13 may be connected to the sound source device 20 by wire.
  • the sensor may be in any form as long as it can acquire biometric information.
  • FIG. 2 is a block diagram showing the configuration of the sound source device 20.
  • the sound source device 20 includes a communication unit 21, a processor 22, a RAM 23, a flash memory 24, a display 25, a user I / F26, and an audio I / F27.
  • the sound source device 20 includes, for example, a personal computer, a smartphone, a tablet computer, or the like.
  • An audio device such as an audio receiver is also an example of a sound source device.
  • the communication unit 21 receives biometric information from the sensor 11, the sensor 12, and the sensor 13 via the wireless communication function.
  • the communication unit 21 may have a wired communication function such as USB or LAN.
  • the display 25 is made of an LCD or the like.
  • User I / F26 is an example of an operation unit.
  • the user I / F 26 includes a mouse, a keyboard, a touch panel, and the like.
  • the user I / F 26 accepts the user's operation.
  • the touch panel may be stacked on the display 25.
  • the user E inputs information such as a bedtime or a wake-up time via the user I / F26. Further, the user E selects the type of sound to be output from the speaker via the user I / F16. For example, the user selects one of the following types: "relax”, “sleep onset”, "good sleep", “wake up”, or "MUTE”.
  • the audio I / F27 is composed of an analog audio terminal, a digital audio terminal, or the like.
  • the audio I / F 27 is connected to the speaker 51 and the speaker 52.
  • the audio I / F 27 outputs a sound signal to the speaker 51 and the speaker 52.
  • the sound source device 20 may transmit a sound signal to the speaker 51 and the speaker 52 by the wireless communication function.
  • the processor 22 is composed of a CPU, a DSP, a SoC (System on a Chip), or the like.
  • the processor 22 performs various operations by reading a program from the flash memory 24, which is a storage medium, and temporarily storing the program in the RAM 23. The program does not need to be stored in the flash memory 24.
  • the processor 22 may temporarily download the program from the server or the like as needed.
  • FIG. 3 is a block diagram showing a functional configuration of the processor 22.
  • FIG. 4 is a flowchart showing the operation of the processor 22.
  • the processor 22 constitutes a biological information acquisition unit 30, a sound source unit 40, a control unit 140, and a reading unit 145 by a program read from the flash memory 24.
  • the sound source unit 40 includes a plurality of sound source units 410, 420, 430, 440 (four in the example of FIG. 3).
  • the biometric information acquisition unit 30 acquires biometric information via the communication unit 21 (S11).
  • the control unit 140 determines the contents of the control table 70 according to the biometric information acquired by the biometric information acquisition unit 30 (S12).
  • the reading unit 145 reads a sound source from the sound source unit 40 based on the control table 70 (S13).
  • FIG. 5 is a diagram showing an example of the control table 70.
  • the control table 70 defines five control modes as an example.
  • the five control modes correspond to any of "relax”, “sleep onset”, “good sleep”, “wake up”, and “MUTE”, respectively.
  • control mode 1 corresponds to "relax”
  • control mode 2 corresponds to "sleep onset”
  • control mode 3 corresponds to "good sleep”
  • control mode 4 corresponds to "wake up”
  • control mode 5 corresponds to "MUTE”.
  • the control unit 140 estimates the physical and mental state of the user based on the biometric information acquired by the biometric information acquisition unit 30, and "relaxes", “sleeps”, “good sleep”, “wakes up”, or “MUTE”. You may automatically select one of them. For example, when the biological information such as pulse, respiration, body movement, brain wave, or blood pressure satisfies a predetermined condition (for example, when it is a high value (a predetermined threshold value or more)), the control unit 140 is a user.
  • a predetermined condition for example, when it is a high value (a predetermined threshold value or more)
  • control unit 140 determines that the user is sleeping, the control unit 140 selects "good sleep”. Alternatively, the control unit 140 may select “MUTE” when it is determined that the user is sleeping. Further, the control unit 140 selects “sleep onset” when the current time reaches the bedtime input by the user. Further, the control unit 140 selects "wake up” when the current time reaches the wake-up time input by the user.
  • the control table 70 includes parameters of four sound sources of hypersonic, binaural beat, natural sound, and music as an example.
  • the sound source unit 410 corresponds to a hypersonic sound source
  • the sound source unit 420 corresponds to a binaural beat sound source
  • the sound source unit 430 corresponds to a natural sound source
  • the sound source unit 440 corresponds to a music sound source. ..
  • Hypersonic is, for example, an inaudible sound of about 20 to 100 Hz. Hypersonic creates a relaxing effect by giving inaudible vibrations to the surface of the human body.
  • the binaural beat is a sound having a frequency difference between the L channel and the R channel.
  • the binaural beat includes a sound of 100 Hz on the L channel and a sound of 110 Hz on the R channel. Binaural beats lead brain waves to a low state by making the user feel such a low frequency difference of about 10 Hz. This causes the binaural beats to have a relaxing effect. Natural sounds include, for example, the sound of wind, the sound of waves, the chirping of birds, or the babbling of rivers.
  • Natural sounds are a random combination of these multiple types of sounds.
  • the natural sound is reproduced with a random length while these multiple types of sounds repeatedly fade in and fade out. This allows natural sounds to introduce sleep and maintain a comfortable sleep.
  • Music for example, is a chord of synthesizer timbres. The lower frequency of the synthesizer timbre chords produces a relaxing effect. The higher frequency of the synthesizer timbre chords causes an arousal effect.
  • user E may select arbitrary sounds in advance.
  • the reading unit 145 reads sound sources from the four sound source units 410, 420, 430, and 440 according to the control of the control unit 140, mixes them, and outputs them to the audio I / F17. As a result, the speaker 51 and the speaker 52 output the mixed sound.
  • the mixed sound is classified as either a relaxing sound, a sleep-inducing sound, a good sleep sound, or an awakening sound.
  • the sounds mixed in control mode 1 include hypersonic, binaural beats, and low frequency synthesizer chord music. The sound obtained by mixing these sounds becomes a relaxing sound that produces an action of relaxing the user E.
  • Sounds mixed in control mode 2 include hypersonic, binaural beats, natural sounds, and low frequency synthesizer chord music. The sound obtained by mixing these sounds becomes a sleep-introducing sound that gives the user E the effect of introducing sleep.
  • the sounds mixed in control mode 3 include hypersonic and natural sounds. The sound of mixing these sounds is a good sleep sound that does not interfere with sleep and also has a relaxing effect.
  • the sounds mixed in control mode 4 include high frequency synthesizer chord music. In addition, music is a sound with a high tempo and a loud volume in two beats. Such music becomes an awakening sound that gives the awakening effect to the user E.
  • control table 70 Note that "-" among the parameters shown in the control table 70 means that natural sounds or music are not used.
  • the tempo of natural sounds and music is the difference from the heart rate or respiratory rate (times / minute) of user E.
  • the tempo of the control table 70 is "-3"
  • the sound source device 20 can relax the user E so that he / she can easily fall asleep by playing natural sounds or music at the same tempo as or lower than the heart rate of the user E.
  • the tempo is "2”
  • the sound source device 20 can shift to the awake state by playing natural sounds or music at a tempo higher than the heart rate of the user E.
  • “1 / f” means that the amplitude, tempo, frequency, etc. are fluctuated by 1 / f.
  • the sound source device 20 can further relax the user E by giving fluctuations.
  • the control unit 140 determines the control table 70 according to the biological information.
  • the sound source device 20 of the present embodiment may repeat the operation of the flowchart shown in FIG. 4 periodically (for example, every few seconds).
  • the contents of the control table 70 change based on the change in the biological information.
  • the tempo of the natural sound in the control mode 2 is set to “-4”, which is even lower.
  • the control table 70 of FIG. 6 is an example in which the effect of sleep induction is enhanced as compared with the example of FIG.
  • the control unit 140 changes the control table 70 to the contents shown in FIG. 6, for example, when the pulse, respiration, and body movement decrease.
  • the control unit 140 may change the control table 70 to the content shown in FIG. 6, for example, when there is no change in pulse, respiration, and body movement.
  • control unit 140 may change any of the other "relaxation", "good sleep", or “wake up” contents based on the biometric information acquired by the biometric information acquisition unit 30.
  • the tempo of the music in the control mode 4 is set to “3”, and the volume is set to “8”.
  • the control unit 140 changes the control table 70 to the contents shown in FIG. 7, for example, when the pulse, respiration, and body movement increase.
  • the control table 70 of FIG. 7 is an example in which the effect of awakening is enhanced as compared with the example of FIG.
  • the control unit 140 may change the control table 70 to the content shown in FIG. 6, for example, when there is no change in pulse, respiration, and body movement.
  • control unit 140 may record in the flash memory 24 the time from the output of the sleep introduction sound or the awakening sound to the transition to the sleep state or the awakening state.
  • the control unit 140 records the time for each sound source and each parameter. Then, the control unit 140 may learn a sound source and a parameter having a high effect of sleep induction by using a predetermined algorithm.
  • control unit 140 changed the contents of the control table 70.
  • the control unit 140 may select one control table from a plurality of control tables based on biological information.
  • the flash memory 24 stores a plurality of control tables corresponding to biometric information.
  • a plurality of control tables corresponding to biometric information may be stored in the server.
  • the control unit 140 transmits the biometric information to the server and acquires the corresponding control table.
  • control unit 140 may determine the control table 70 based on information such as the age, gender, nationality, etc. of the user in addition to the biometric information.
  • the contents of the control table 70 with respect to information such as the age, gender, and nationality of the user are recorded in, for example, a server (not shown).
  • the server records the contents of the control table 70 for information such as the age, gender, or nationality of the user from a large number of devices.
  • the server may learn these and learn the optimum control table 70 for information such as the age, gender, or nationality of the user.
  • the control unit 140 transmits information such as the age, gender, or nationality of the user to the server via the communication unit 21, and receives the corresponding control table 70.
  • control unit 140 may specify the user and determine the control table 70 based on the user's specific result in addition to the biometric information.
  • the user E edits the contents of the control table 70 via the user I / F26.
  • User E changes various parameters such as the type of natural sound, the type of music, the tempo, or the volume.
  • the control unit 140 records the edited contents of the user E in the flash memory 24.
  • the control unit 140 may learn the user's favorite parameters by using a predetermined algorithm according to the edited contents of the control table 70 of the user E. As a result, the control unit 140 determines the control table 70 according to the user's preference.
  • the sound source device 20 may output a relaxing sound to the user E in the living room or the like when the user E is detected to be in an excited state.
  • the sound source device 20 may output an awakening sound to the user E in the office when the user E is detected to be in a sleep state.
  • FIG. 8 is a schematic view showing the configuration of the sound reproduction system 1A including the sound source device 20A according to the second embodiment.
  • the same configurations as those shown in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted.
  • the sound reproduction system 1A includes an array speaker 50. Similar to the speaker 51 and the speaker 52 of FIG. 1, the array speaker 50 outputs various sounds including a relaxing sound, a sleep introducing sound, a good sleep sound, an awakening sound, and the like.
  • the array speaker 50 includes a plurality of speakers.
  • the array speaker 50 can control the directivity by controlling the volume and the sound emission timing of the sound signals supplied to the plurality of arranged speakers.
  • the array speaker 50 is arranged at a predetermined position away from the bed 5.
  • the array speaker 50 arranges a plurality of speakers in a direction parallel to the minor axis direction of the bed 5.
  • the sound source device 20A and the array speaker 50 are connected by a wireless communication function or a wired communication function.
  • the array speaker 50 amplifies the stereo left (L) channel sound signal and the stereo right (L) channel sound signal output from the sound source device 20 by the built-in amplifier and emits the sound.
  • FIG. 9 is a block diagram showing the configuration of the sound source device 20A.
  • the sound source device 20A includes the same hardware as the sound source device 20. Therefore, each hardware configuration is designated by the same reference numeral, and the description thereof will be omitted.
  • the sound source device 20A is an example of an indoor sound environment generation device.
  • the flash memory 24 of the sound source device 20A further stores a program for configuring the position information acquisition unit 75 and the estimation unit 80.
  • the processor 22 of the sound source device 20A further constitutes the position information acquisition unit 75 and the estimation unit 80 by the program read from the flash memory 24.
  • the position information acquisition unit 75 acquires information regarding the position of the user (for example, coordinates in the room).
  • the estimation unit 80 estimates the physical and mental state of the user based on the biological information. For example, the estimation unit 80 determines that the user is in an excited state when the biological information such as pulse, respiration, body movement, brain wave, or blood pressure is a high value (greater than or equal to a predetermined threshold value).
  • the estimation unit 80 is in a state of falling asleep when biological information such as pulse, respiration, body movement, electroencephalogram, or blood pressure is low (above a predetermined threshold value) and these values further decrease with the passage of time. Judge that. Further, the estimation unit 80 determines that it is in a sleeping state when it detects an electroencephalogram corresponding to REM sleep or non-REM sleep. Further, when the biological information such as pulse, respiration, body movement, brain wave, or blood pressure is low (above a predetermined threshold value) and these values increase with the passage of time, the estimation unit 80 is in a wake-up state. Judge that there is.
  • FIG. 10 is a flowchart showing the operation of the sound source device 20A.
  • the biometric information acquisition unit 30 acquires biometric information via the communication unit 21, and the position information acquisition unit 75 acquires the position information of the user E (S21).
  • the position information acquisition unit 75 acquires position information via, for example, the sensor 12 or the sensor 13.
  • the sensor 12 is laid under the pillow and the sensor 13 is laid on the bed. Therefore, when the position information acquisition unit 75 acquires the biological information from the sensor 12 or the sensor 13, the position information acquisition unit 75 determines that the user E is in the bed 5 and the head position exists at the position of the pillow.
  • the position information is represented by, for example, the coordinates when the room is viewed in a plane.
  • the user E inputs the coordinates of the sensor 12, the sensor 13, and the array speaker 50 in advance via the user I / F16.
  • the position information acquisition unit 75 acquires the coordinates of the sensor 12, the sensor 13, and the array speaker 50 in advance.
  • the position information acquisition unit 75 may acquire the position information via the sensor 11 worn by the user.
  • the sensor 11 transmits, for example, a Bluetooth® beacon signal.
  • the position information acquisition unit 75 measures the distance to the sensor 11 based on the received radio wave intensity of the beacon signal. Since the radio wave intensity is inversely proportional to the square of the distance, it can be converted into information regarding the distance between the sensor 11 and the sound source device 20A.
  • the position information acquisition unit 75 can uniquely identify the position of the sensor 11 by acquiring three or more pieces of information on the distance.
  • the array speaker 50 may receive the beacon signal of the sensor 11, and the position information acquisition unit 75 may receive information regarding the received radio wave intensity of the beacon signal from the array speaker 50.
  • the user E may set a plurality of terminals for receiving the beacon signal in the room. In this case, the position information acquisition unit 75 receives information on the received radio field strength of the beacon signal from a plurality of terminals.
  • the position information acquisition unit 75 may specify the position of the user E by using the temperature sensor. For example, when the position information acquisition unit 75 detects an object of about 36 degrees Celsius via a temperature sensor, it determines that the object is user E and acquires the coordinates of the object. The position information may be acquired.
  • the sound source device 20A acquires a sound signal (S22).
  • the processor 22 acquires a sound signal by the biological information acquisition unit 30, the sound source unit 40, the control unit 140, and the reading unit 145, as in the embodiment shown in the functional block diagram of FIG.
  • the sound source device 20A according to the second embodiment does not need to acquire the sound signal in the mode shown in the first embodiment.
  • the sound source device 20A may acquire a sound signal by reading out a specific content stored in the flash memory 24.
  • the sound source device 20A may acquire a sound signal by receiving a specific content from an information processing terminal such as a smartphone owned by the user or another device such as a server.
  • the control unit 140 performs sound image localization processing based on the biological information and the position information (S23).
  • the sound image localization process is, for example, a process of controlling the directivity by controlling the volume and the sound emission timing of the sound signals supplied to the plurality of speakers of the array speaker 50.
  • control unit 140 directs the directivity of the sound output from the array speaker 50 to the position where the user E is, as shown in FIG. 11, based on the position information. Further, the control unit 140 controls the directivity based on the biological information. For example, the control unit 140 outputs the sound of content such as music to the entire room when the estimation unit 80 determines that the estimation unit 80 is in the awake state even when the user E is at the position of the bed 5. Alternatively, the control unit 140 may output the sound of content such as music to the entire room when the user E is in a place other than the bed 5. Further, the control unit 140 may output an awakening sound when the estimation unit 80 determines that the estimation unit 80 is in a sleep state even when the user E is in a place other than the bed 5.
  • the control unit 140 performs the sound image localization process in which the directivity is controlled. After that, the control unit 140 outputs a sound signal to the array speaker 50 via the audio I / F17 (S24).
  • the control unit 140 may output a sound signal after adjusting the volume and sound emission timing of the array speaker 50, but information indicating the sound signal and volume and sound emission timing of each channel (sound image localization information). May be output to the array speaker 50. In this case, the array speaker 50 adjusts the volume and the sound emission timing.
  • the control unit 140 may output a sound signal and information for controlling the directivity (for example, coordinates indicating the direction of the sound) to the array speaker 50. In this case, the array speaker 50 calculates the volume adjustment amount and the sound emission timing adjustment amount.
  • FIG. 12 is a flowchart showing the operation of the sound source device 20A according to the modified example of the second embodiment.
  • the same reference numerals are given to the operations common to those in FIG. 10, and the description thereof will be omitted.
  • the control unit 140 of the sound source device 20A further identifies the user (S200).
  • the control unit 140 functions as a specific unit that identifies the user.
  • the control unit 140 performs sound image localization processing based on the user's specific result in addition to the biological information and the position information. For example, the control unit 140 controls the directivity so that various sounds reach only a specific user.
  • the control unit 140 directs the directivity of the sound output by the array speaker 50 to the position where the specific user E2 is. As a result, it is difficult for the user E1 to hear the sound output by the array speaker 50. For example, when the user E1 sets the wake-up time at 8:00 am and the user E2 sets the wake-up time at 9:00 am, the control unit 140 outputs an awakening sound to the user E2 at 8:00 am. In this case, only the user E2 can hear the awakening sound without disturbing the user E1 to go to bed.
  • the sound source device 20A may perform a process of acquiring the cancel sound and localizing the cancel sound to a person other than a specific user.
  • the control unit 140 outputs the sound beam B1 related to the awakening sound to the specific user E2.
  • the control unit 140 outputs the sound beam B2 related to the cancel sound to the other user E1.
  • the cancel sound is a sound having the opposite phase of the sound beam B1 related to the awakening sound.
  • the sound beam B2 related to the cancel sound can cancel the awakening sound leaking from the sound beam B1 related to the awakening sound. Therefore, the awakening sound can be heard only by the user E2 without further hindering the user E1 from going to bed.
  • an example of controlling the directivity of the array speaker is shown as an example of sound image localization processing.
  • the sound image localization process can be performed by physically changing the sound emission direction of the directional speaker by a motor or the like.
  • the sound image localization process can also be performed by arranging a plurality of speakers in the room and outputting a sound such as an awakening sound only to the speaker at the position closest to the specific user.
  • the sound image localization process may be, for example, a process of convolving a head-related transfer function into a sound signal.
  • E, E1, E2 ... Users 1, 1A ... Sound reproduction system 1A ... Sound reproduction system 5 ... Beds 11, 12, 13 ... Sensors 20, 20A ... Sound source device 21 ... Communication unit 22 ... Processor 23 ... RAM 24 ... Flash memory 25 ... Display 26 ... User I / F 27 ... Audio I / F 30 ... Biological information acquisition unit 40 ... Sound source unit 50 ... Array speakers 51, 52 ... Speaker 70 ... Control table 75 ... Position information acquisition unit 80 ... Estimating unit 140 ... Control unit 145 ... Reading unit 410, 420, 430, 440 ... Sound source Department

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  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

An indoor sound environment generation apparatus including: a sound-signal acquisition unit that acquires sound signals; a sound-signal output unit that outputs the sound signals; a biological-information acquisition unit that acquires biological information of a user; a position-information acquisition unit that acquires the position information of the user; and a control unit that controls sound image localization of the sound signals on the basis of the biological information and the position information.

Description

室内用音環境生成装置、音源装置、室内用音環境生成方法および音源装置の制御方法Indoor sound environment generation device, sound source device, indoor sound environment generation method and sound source device control method
　本発明の一実施形態は、室内用音環境生成装置、音源装置、室内用音環境生成方法および音源装置の制御方法に関する。 One embodiment of the present invention relates to an indoor sound environment generation device, a sound source device, an indoor sound environment generation method, and a control method of the sound source device.
　特許文献１、２には、これから就寝したい利用者に睡眠を誘導する音を出力する装置が開示されている。 Patent Documents 1 and 2 disclose a device that outputs a sound that induces sleep to a user who wants to go to bed.
　特許文献１には、音像を三次元的に認識させるようにスピーカへの音声信号を生成する音響処理装置が開示されている。 Patent Document 1 discloses an acoustic processing device that generates an audio signal to a speaker so as to recognize a sound image three-dimensionally.
　特許文献２には、利用者の状態に応じて異なる音を出力する音源装置が開示されている。 Patent Document 2 discloses a sound source device that outputs different sounds depending on the state of the user.
特開２０１０－１７２３９２号公報Japanese Unexamined Patent Publication No. 2010-172392 特開２０１４－２２６３６１号公報Japanese Unexamined Patent Publication No. 2014-226361
　特許文献１の装置は、利用者の状態に応じた音を出力していない。例えば、就寝姿勢を取る利用者は、これから就寝したい場合と、起床したい場合がある。 The device of Patent Document 1 does not output sound according to the state of the user. For example, a user who takes a sleeping posture may want to go to bed or wake up.
　あるいは、例えばこれから就寝したい場合の利用者においても、当該利用者の状態が変わらない場合には、さらに強く睡眠を誘導することが望まれる。 Alternatively, for example, even for a user who wants to go to bed from now on, if the state of the user does not change, it is desired to induce sleep more strongly.
　そこで、本発明の一実施形態の目的の一つは、利用者の状態に応じて望ましい状態まで誘導できる音を出力する室内用音環境生成装置、音源装置、室内用音環境生成方法および音源装置の制御方法を提供することにある。 Therefore, one of the objects of the embodiment of the present invention is an indoor sound environment generator, a sound source device, an indoor sound environment generation method, and a sound source device that output a sound that can be guided to a desired state according to a user's state. Is to provide a control method for.
　室内用音環境生成装置は、音信号を取得する音信号取得部と、音信号を出力する音信号出力部と、利用者の生体情報を取得する生体情報取得部と、利用者の位置情報を取得する位置情報取得部と、前記生体情報および前記位置情報に基づいて前記音信号の音像定位を制御する制御部と、を備える。 The indoor sound environment generator acquires a sound signal acquisition unit that acquires a sound signal, a sound signal output unit that outputs a sound signal, a biometric information acquisition unit that acquires the biometric information of the user, and a user's position information. It includes a position information acquisition unit to be acquired and a control unit that controls the sound image localization of the sound signal based on the biometric information and the position information.
　音源装置は、利用者の生体情報を取得する生体情報取得部と、複数の音源部と、前記生体情報に基づいて前記複数の音源部を制御するための制御テーブルを決定し、決定した制御テーブルに基づいて前記複数の音源部を制御する制御部と、前記制御部の制御に応じて前記複数の音源部から音源を読み出す読出部と、を備える。 The sound source device determines a biometric information acquisition unit that acquires the biometric information of the user, a plurality of sound source units, and a control table for controlling the plurality of sound source units based on the biometric information, and the determined control table. A control unit that controls the plurality of sound source units based on the above, and a reading unit that reads a sound source from the plurality of sound source units according to the control of the control unit.
　本発明の一実施形態によれば、利用者の状態に応じて望ましい状態まで誘導できる音を出力することができる。 According to one embodiment of the present invention, it is possible to output a sound that can guide the user to a desired state according to the state of the user.
本実施形態に係る音源装置２０を含む音再生システム１の構成を示す概略図である。It is a schematic diagram which shows the structure of the sound reproduction system 1 including the sound source apparatus 20 which concerns on this embodiment. 音源装置２０の構成を示すブロック図である。It is a block diagram which shows the structure of the sound source apparatus 20. プロセッサ２２の機能的構成を示すブロック図である。It is a block diagram which shows the functional structure of the processor 22. プロセッサ２２の動作を示すフローチャートである。It is a flowchart which shows the operation of the processor 22. 制御テーブル７０の一例を示す図である。It is a figure which shows an example of the control table 70. 制御テーブル７０の一例を示す図である。It is a figure which shows an example of the control table 70. 制御テーブル７０の一例を示す図である。It is a figure which shows an example of the control table 70. 第２実施形態に係る音源装置２０Ａを含む音再生システム１Ａの構成を示す概略図である。It is the schematic which shows the structure of the sound reproduction system 1A including the sound source apparatus 20A which concerns on 2nd Embodiment. 音源装置２０Ａの構成を示すブロック図である。It is a block diagram which shows the structure of the sound source apparatus 20A. 音源装置２０Ａの動作を示すフローチャートである。It is a flowchart which shows the operation of the sound source apparatus 20A. 音源装置２０Ａを含む音再生システム１Ａの構成を示す概略図である。It is the schematic which shows the structure of the sound reproduction system 1A including the sound source apparatus 20A. 音源装置２０Ａの動作を示すフローチャートである。It is a flowchart which shows the operation of the sound source apparatus 20A. 音源装置２０Ａを含む音再生システム１Ａの構成を示す概略図である。It is the schematic which shows the structure of the sound reproduction system 1A including the sound source apparatus 20A. 音源装置２０Ａを含む音再生システム１Ａの構成を示す概略図である。It is the schematic which shows the structure of the sound reproduction system 1A including the sound source apparatus 20A.
　（第１実施形態）　
　図１は、第１実施形態に係る音源装置２０を含む音再生システム１の構成を示す概略図である。音再生システム１は、センサ１１、センサ１２、センサ１３、音源装置２０、スピーカ５１、およびスピーカ５２を備えている。音再生システム１は、ベッド５の上で仰向けの就寝姿勢をとっている利用者Ｅに対して、スピーカ５１およびスピーカ５２から発せられる音を聴かせる。スピーカ５１およびスピーカ５２の発する音は、例えば、睡眠を導入するための音、または覚醒させる音等を含む。 (First Embodiment)
FIG. 1 is a schematic view showing a configuration of a sound reproduction system 1 including a sound source device 20 according to the first embodiment. The sound reproduction system 1 includes a sensor 11, a sensor 12, a sensor 13, a sound source device 20, a speaker 51, and a speaker 52. The sound reproduction system 1 causes the user E, who is lying on his back on the bed 5, to hear the sound emitted from the speaker 51 and the speaker 52. The sounds emitted by the speaker 51 and the speaker 52 include, for example, a sound for introducing sleep, a sound for awakening, and the like.
　スピーカ５１およびスピーカ５２は、ベッド５から離れた所定の位置に配置されている。図１の例では、利用者Ｅの足元に向かう方向において、利用者Ｅに放音方向を向けて配置されている。スピーカ５１は、音源装置２０から出力されるステレオの左（Ｌ）チャンネルの音信号を、内蔵アンプで増幅して放音する。スピーカ５２は、音源装置２０から出力されるステレオの右（Ｌ）チャンネルの音信号を内蔵アンプで増幅して放音する。 The speaker 51 and the speaker 52 are arranged at predetermined positions away from the bed 5. In the example of FIG. 1, the sound is emitted toward the user E in the direction toward the feet of the user E. The speaker 51 amplifies the stereo left (L) channel sound signal output from the sound source device 20 by the built-in amplifier and emits the sound. The speaker 52 amplifies the sound signal of the stereo right (L) channel output from the sound source device 20 by the built-in amplifier and emits the sound.
　センサ１１は、利用者Ｅの手首に取り付けられる。センサ１２は、枕の下に敷かれる。センサ１３は、ベッドの上に敷かれる。センサ１１、センサ１２、およびセンサ１３は、利用者Ｅの脈拍、呼吸、体動、脳波、あるいは血圧等の生体情報を検出する。センサ１１、センサ１２、およびセンサ１３は、無線通信機能を備える。センサ１１、センサ１２、およびセンサ１３は、検出した生体情報を音源装置２０に送信する。なお、生体情報を検出するセンサは、本実施形態の様に３つに限らない。センサは、１つでも２つでも４つ以上でもよい。また、生体情報は、本実施形態に示した例に限らない。さらに生体情報は、少なくとも１つを検出すればよい。 The sensor 11 is attached to the wrist of the user E. The sensor 12 is laid under the pillow. The sensor 13 is laid on the bed. The sensor 11, the sensor 12, and the sensor 13 detect biological information such as the pulse, respiration, body movement, brain wave, and blood pressure of the user E. The sensor 11, the sensor 12, and the sensor 13 have a wireless communication function. The sensor 11, the sensor 12, and the sensor 13 transmit the detected biological information to the sound source device 20. The number of sensors that detect biological information is not limited to three as in the present embodiment. The number of sensors may be one, two, or four or more. Moreover, the biological information is not limited to the example shown in this embodiment. Further, at least one biological information may be detected.
　なお、無線通信機能は必須ではない。例えばセンサ１１、センサ１２、およびセンサ１３は、音源装置２０に有線で接続されてもよい。なお、センサは、生体情報を取得できるものであればどの様な態様であってもよい。 The wireless communication function is not essential. For example, the sensor 11, the sensor 12, and the sensor 13 may be connected to the sound source device 20 by wire. The sensor may be in any form as long as it can acquire biometric information.
　図２は、音源装置２０の構成を示すブロック図である。音源装置２０は、通信部２１、プロセッサ２２、ＲＡＭ２３、フラッシュメモリ２４、表示器２５、ユーザＩ／Ｆ２６、およびオーディオＩ／Ｆ２７を備えている。 FIG. 2 is a block diagram showing the configuration of the sound source device 20. The sound source device 20 includes a communication unit 21, a processor 22, a RAM 23, a flash memory 24, a display 25, a user I / F26, and an audio I / F27.
　音源装置２０は、例えばパーソナルコンピュータ、スマートフォン、あるいはタブレット型コンピュータ等からなる。また、オーディオレシーバ等の音響機器も、音源装置の一例である。 The sound source device 20 includes, for example, a personal computer, a smartphone, a tablet computer, or the like. An audio device such as an audio receiver is also an example of a sound source device.
　通信部２１は、無線通信機能を介して、センサ１１、センサ１２、およびセンサ１３から生体情報を受信する。通信部２１は、ＵＳＢまたはＬＡＮ等の有線通信機能を備えていてもよい。 The communication unit 21 receives biometric information from the sensor 11, the sensor 12, and the sensor 13 via the wireless communication function. The communication unit 21 may have a wired communication function such as USB or LAN.
　表示器２５は、ＬＣＤ等からなる。ユーザＩ／Ｆ２６は、操作部の一例である。ユーザＩ／Ｆ２６は、マウス、キーボード、あるいはタッチパネル等からなる。ユーザＩ／Ｆ２６は、利用者の操作を受け付ける。なお、タッチパネルは、表示器２５に積層されていてもよい。利用者Ｅは、ユーザＩ／Ｆ２６を介して、例えば就寝時刻または起床時刻等の情報を入力する。また、利用者Ｅは、ユーザＩ／Ｆ１６を介して、スピーカから出力させる音の種類を選択する。例えば、利用者は、「リラックス」、「入眠」、「快眠」、「起床」、または「ＭＵＴＥ」のいずれかの種類を選択する。 The display 25 is made of an LCD or the like. User I / F26 is an example of an operation unit. The user I / F 26 includes a mouse, a keyboard, a touch panel, and the like. The user I / F 26 accepts the user's operation. The touch panel may be stacked on the display 25. The user E inputs information such as a bedtime or a wake-up time via the user I / F26. Further, the user E selects the type of sound to be output from the speaker via the user I / F16. For example, the user selects one of the following types: "relax", "sleep onset", "good sleep", "wake up", or "MUTE".
　オーディオＩ／Ｆ２７は、アナログオーディオ端子またはデジタルオーディオ端子等からなる。オーディオＩ／Ｆ２７は、スピーカ５１およびスピーカ５２に接続されている。なお、オーディオＩ／Ｆ２７は、スピーカ５１およびスピーカ５２に音信号を出力する。なお、音源装置２０は、無線通信機能でスピーカ５１およびスピーカ５２に音信号を送信してもよい。 The audio I / F27 is composed of an analog audio terminal, a digital audio terminal, or the like. The audio I / F 27 is connected to the speaker 51 and the speaker 52. The audio I / F 27 outputs a sound signal to the speaker 51 and the speaker 52. The sound source device 20 may transmit a sound signal to the speaker 51 and the speaker 52 by the wireless communication function.
　プロセッサ２２は、ＣＰＵ、ＤＳＰ、またはＳｏＣ（Ｓｙｓｔｅｍ　ｏｎ　ａ　Ｃｈｉｐ）等からなる。プロセッサ２２は、記憶媒体であるフラッシュメモリ２４からプログラムを読み出し、ＲＡＭ２３に一時記憶することで、種々の動作を行う。なお、プログラムは、フラッシュメモリ２４に記憶しておく必要はない。プロセッサ２２は、必要に応じてサーバ等からプログラムを一時的にダウンロードしてもよい。 The processor 22 is composed of a CPU, a DSP, a SoC (System on a Chip), or the like. The processor 22 performs various operations by reading a program from the flash memory 24, which is a storage medium, and temporarily storing the program in the RAM 23. The program does not need to be stored in the flash memory 24. The processor 22 may temporarily download the program from the server or the like as needed.
　図３は、プロセッサ２２の機能的構成を示すブロック図である。図４は、プロセッサ２２の動作を示すフローチャートである。プロセッサ２２は、フラッシュメモリ２４から読み出したプログラムにより、生体情報取得部３０、音源部４０、制御部１４０、および読出部１４５を構成する。音源部４０は、複数（図３の例では４つ）の音源部４１０，４２０，４３０，４４０を含む。 FIG. 3 is a block diagram showing a functional configuration of the processor 22. FIG. 4 is a flowchart showing the operation of the processor 22. The processor 22 constitutes a biological information acquisition unit 30, a sound source unit 40, a control unit 140, and a reading unit 145 by a program read from the flash memory 24. The sound source unit 40 includes a plurality of sound source units 410, 420, 430, 440 (four in the example of FIG. 3).
　生体情報取得部３０は、通信部２１を介して生体情報を取得する（Ｓ１１）。制御部１４０は、生体情報取得部３０が取得した生体情報に応じて制御テーブル７０の内容を決定する（Ｓ１２）。読出部１４５は、制御テーブル７０に基づいて、音源部４０から音源を読み出す（Ｓ１３）。 The biometric information acquisition unit 30 acquires biometric information via the communication unit 21 (S11). The control unit 140 determines the contents of the control table 70 according to the biometric information acquired by the biometric information acquisition unit 30 (S12). The reading unit 145 reads a sound source from the sound source unit 40 based on the control table 70 (S13).
　図５は、制御テーブル７０の一例を示す図である。制御テーブル７０は、一例として、５つの制御モードを規定している。５つの制御モードは、それぞれ、「リラックス」、「入眠」、「快眠」、「起床」、および「ＭＵＴＥ」のいずれかに対応する。例えば、制御モード１は「リラックス」、制御モード２は「入眠」、制御モード３は「快眠」、制御モード４は「起床」、制御モード５は「ＭＵＴＥ」に対応する。 FIG. 5 is a diagram showing an example of the control table 70. The control table 70 defines five control modes as an example. The five control modes correspond to any of "relax", "sleep onset", "good sleep", "wake up", and "MUTE", respectively. For example, control mode 1 corresponds to "relax", control mode 2 corresponds to "sleep onset", control mode 3 corresponds to "good sleep", control mode 4 corresponds to "wake up", and control mode 5 corresponds to "MUTE".
　上述の様に、利用者は、ユーザＩ／Ｆ１６を介して、「リラックス」、「入眠」、「快眠」、「起床」、または「ＭＵＴＥ」のいずれかの種類を選択する。あるいは、制御部１４０は、生体情報取得部３０で取得した生体情報に基づいて、利用者の心身状態を推定し、「リラックス」、「入眠」、「快眠」、「起床」、または「ＭＵＴＥ」のいずれかを自動的に選択してもよい。例えば、制御部１４０は、脈拍、呼吸、体動、脳波、あるいは血圧等の生体情報が所定の条件を満たした場合（例えば、高い値（所定の閾値以上）である場合）には、利用者が興奮状態であると判定し「リラックス」を選択する。また、制御部１４０は、利用者が睡眠中であると判定した場合には、「快眠」を選択する。あるいは、制御部１４０は、利用者が睡眠中であると判定した場合には、「ＭＵＴＥ」を選択してもよい。また、制御部１４０は、現在の時刻が利用者の入力した就寝時刻に達した場合に、「入眠」を選択する。また、制御部１４０は、現在の時刻が利用者の入力した起床時刻に達した場合に、「起床」を選択する。 As described above, the user selects one of "relax", "sleep onset", "good sleep", "wake up", or "MUTE" via the user I / F16. Alternatively, the control unit 140 estimates the physical and mental state of the user based on the biometric information acquired by the biometric information acquisition unit 30, and "relaxes", "sleeps", "good sleep", "wakes up", or "MUTE". You may automatically select one of them. For example, when the biological information such as pulse, respiration, body movement, brain wave, or blood pressure satisfies a predetermined condition (for example, when it is a high value (a predetermined threshold value or more)), the control unit 140 is a user. Judges that he is in an excited state and selects "Relax". Further, when the control unit 140 determines that the user is sleeping, the control unit 140 selects "good sleep". Alternatively, the control unit 140 may select "MUTE" when it is determined that the user is sleeping. Further, the control unit 140 selects "sleep onset" when the current time reaches the bedtime input by the user. Further, the control unit 140 selects "wake up" when the current time reaches the wake-up time input by the user.
　制御テーブル７０は、一例として、ハイパーソニック、バイノーラルビート、自然音、および音楽の４つの音源のパラメータを含む。音源部４１０は、ハイパーソニックの音源に対応し、音源部４２０は、バイノーラルビートの音源に対応し、音源部４３０は、自然音の音源に対応し、音源部４４０は、音楽の音源に対応する。 The control table 70 includes parameters of four sound sources of hypersonic, binaural beat, natural sound, and music as an example. The sound source unit 410 corresponds to a hypersonic sound source, the sound source unit 420 corresponds to a binaural beat sound source, the sound source unit 430 corresponds to a natural sound source, and the sound source unit 440 corresponds to a music sound source. ..
　ハイパーソニックは、例えば、２０～１００Ｈｚ程度の非可聴音である。ハイパーソニックは、人の体表面に非可聴音の振動を与えることで、リラックス作用を生じさせる。バイノーラルビートは、ＬチャンネルおよびＲチャンネルで周波数差を持たせた音である。例えば、バイノーラルビートは、Ｌチャンネルに１００Ｈｚの音、Ｒチャンネルに１１０Ｈｚの音を含む。バイノーラルビートは、この様な１０Ｈｚ程度の低い周波数差を利用者に感じさせることで、脳波を低い状態に導く。これにより、バイノーラルビートは、リラックス作用を生じさせる。自然音は、例えば風の音、波の音、鳥のさえずり、あるいは川のせせらぎ等の音を含む。自然音は、これらの複数種類の音がランダムに組み合わされる。また、自然音は、これらの複数種類の音がフェードイン、フェードアウトを繰り返しながら、ランダムな長さで再生される。これにより、自然音は、睡眠を導入したり、快適な睡眠を維持することができる。音楽は、一例として、シンセサイザの音色の和音である。シンセサイザの音色の和音のうち低い周波数の音は、リラックス作用を生じさせる。シンセサイザの音色の和音のうち高い周波数の音は、覚醒作用を生じさせる。なお、自然音および音楽は、利用者Ｅが予め任意の音を選択してもよい。 Hypersonic is, for example, an inaudible sound of about 20 to 100 Hz. Hypersonic creates a relaxing effect by giving inaudible vibrations to the surface of the human body. The binaural beat is a sound having a frequency difference between the L channel and the R channel. For example, the binaural beat includes a sound of 100 Hz on the L channel and a sound of 110 Hz on the R channel. Binaural beats lead brain waves to a low state by making the user feel such a low frequency difference of about 10 Hz. This causes the binaural beats to have a relaxing effect. Natural sounds include, for example, the sound of wind, the sound of waves, the chirping of birds, or the babbling of rivers. Natural sounds are a random combination of these multiple types of sounds. In addition, the natural sound is reproduced with a random length while these multiple types of sounds repeatedly fade in and fade out. This allows natural sounds to introduce sleep and maintain a comfortable sleep. Music, for example, is a chord of synthesizer timbres. The lower frequency of the synthesizer timbre chords produces a relaxing effect. The higher frequency of the synthesizer timbre chords causes an arousal effect. As for natural sounds and music, user E may select arbitrary sounds in advance.
　読出部１４５は、制御部１４０の制御に応じて４つの音源部４１０、４２０、４３０、４４０から音源を読み出し、ミキシングしてオーディオＩ／Ｆ１７に出力する。これにより、スピーカ５１およびスピーカ５２は、ミキシングした音を出力する。 The reading unit 145 reads sound sources from the four sound source units 410, 420, 430, and 440 according to the control of the control unit 140, mixes them, and outputs them to the audio I / F17. As a result, the speaker 51 and the speaker 52 output the mixed sound.
　ミキシングした音は、リラックス音、睡眠導入音、快眠音、または覚醒音のいずれかに分類される。例えば、制御モード１でミキシングした音は、ハイパーソニック、バイノーラルビート、および低周波数のシンセサイザの和音の音楽を含む。これらの音をミキシングした音は、利用者Ｅをリラックスさせる作用を生む、リラックス音となる。制御モード２でミキシングした音は、ハイパーソニック、バイノーラルビート、自然音、および低周波数のシンセサイザの和音の音楽を含む。これらの音をミキシングした音は、利用者Ｅに睡眠導入の効果を与える、睡眠導入音となる。制御モード３でミキシングした音は、ハイパーソニック、および自然音を含む。これらの音をミキシングした音は、睡眠を阻害せず、かつリラックス作用も生じる快眠音となる。制御モード４でミキシングした音は、高周波数のシンセサイザの和音の音楽を含む。また、音楽は、２拍子でテンポが高く、音量の大きい音である。この様な音楽は、利用者Ｅに覚醒効果を与える、覚醒音となる。 The mixed sound is classified as either a relaxing sound, a sleep-inducing sound, a good sleep sound, or an awakening sound. For example, the sounds mixed in control mode 1 include hypersonic, binaural beats, and low frequency synthesizer chord music. The sound obtained by mixing these sounds becomes a relaxing sound that produces an action of relaxing the user E. Sounds mixed in control mode 2 include hypersonic, binaural beats, natural sounds, and low frequency synthesizer chord music. The sound obtained by mixing these sounds becomes a sleep-introducing sound that gives the user E the effect of introducing sleep. The sounds mixed in control mode 3 include hypersonic and natural sounds. The sound of mixing these sounds is a good sleep sound that does not interfere with sleep and also has a relaxing effect. The sounds mixed in control mode 4 include high frequency synthesizer chord music. In addition, music is a sound with a high tempo and a loud volume in two beats. Such music becomes an awakening sound that gives the awakening effect to the user E.
　なお、制御テーブル７０に示すパラメータのうち「－」は、自然音または音楽を用いないことを意味する。 Note that "-" among the parameters shown in the control table 70 means that natural sounds or music are not used.
　自然音および音楽のテンポは、利用者Ｅの心拍数あるいは呼吸数（回／分）との差分である。例えば制御テーブル７０のテンポが「－３」であれば、利用者Ｅの心拍数よりも３低いテンポで再生することを意味する。音源装置２０は、利用者Ｅの心拍数と同じテンポか、あるいは低いテンポで自然音または音楽を再生することで、睡眠に入りやすいようにリラックスさせることができる。テンポが「２」であれば、利用者の心拍数よりも２高いテンポで再生することを意味する。音源装置２０は、利用者Ｅの心拍数よりも高いテンポで自然音または音楽を再生することで、覚醒状態に移行させることができる。「１／ｆ」は、振幅、テンポ、または周波数等を１／ｆで揺らぎを与えることを意味する。音源装置２０は、揺らぎを与えることで、利用者Ｅをさらにリラックスさせることができる。 The tempo of natural sounds and music is the difference from the heart rate or respiratory rate (times / minute) of user E. For example, if the tempo of the control table 70 is "-3", it means that the game is played at a tempo 3 lower than the heart rate of the user E. The sound source device 20 can relax the user E so that he / she can easily fall asleep by playing natural sounds or music at the same tempo as or lower than the heart rate of the user E. If the tempo is "2", it means that the game is played at a tempo that is 2 higher than the user's heart rate. The sound source device 20 can shift to the awake state by playing natural sounds or music at a tempo higher than the heart rate of the user E. “1 / f” means that the amplitude, tempo, frequency, etc. are fluctuated by 1 / f. The sound source device 20 can further relax the user E by giving fluctuations.
　制御部１４０は、生体情報に応じて制御テーブル７０を決定する。本実施形態の音源装置２０は、図４に示したフローチャートの動作を、定期的（例えば数秒経過毎）に繰り返してもよい。この場合、制御テーブル７０の内容は、生体情報の変化に基づいて変化する。例えば、図６に示す制御テーブル７０は、制御モード２における自然音のテンポがさらに低い「－４」になっている。図６の制御テーブル７０は、図５の例よりも睡眠導入の効果を高める一例である。制御部１４０は、例えば脈拍、呼吸、および体動が低下した場合に、制御テーブル７０を図６に示す内容に変更する。あるいは、制御部１４０は、例えば脈拍、呼吸、および体動に変化がない場合に、制御テーブル７０を図６に示す内容に変更してもよい。 The control unit 140 determines the control table 70 according to the biological information. The sound source device 20 of the present embodiment may repeat the operation of the flowchart shown in FIG. 4 periodically (for example, every few seconds). In this case, the contents of the control table 70 change based on the change in the biological information. For example, in the control table 70 shown in FIG. 6, the tempo of the natural sound in the control mode 2 is set to “-4”, which is even lower. The control table 70 of FIG. 6 is an example in which the effect of sleep induction is enhanced as compared with the example of FIG. The control unit 140 changes the control table 70 to the contents shown in FIG. 6, for example, when the pulse, respiration, and body movement decrease. Alternatively, the control unit 140 may change the control table 70 to the content shown in FIG. 6, for example, when there is no change in pulse, respiration, and body movement.
　無論、制御部１４０は、生体情報取得部３０で取得した生体情報に基づいて、他の「リラックス」、「快眠」、または「起床」のいずれかの内容を変更してもよい。例えば、図７に示す制御テーブル７０は、制御モード４における音楽のテンポがさらに高い「３」になり、音量がさらに大きい「８」になっている。制御部１４０は、例えば脈拍、呼吸、および体動が上昇した場合に、制御テーブル７０を図７に示す内容に変更する。図７の制御テーブル７０は、図５の例よりも覚醒の効果を高める一例である。あるいは、制御部１４０は、例えば脈拍、呼吸、および体動に変化がない場合に、制御テーブル７０を図６に示す内容に変更してもよい。 Of course, the control unit 140 may change any of the other "relaxation", "good sleep", or "wake up" contents based on the biometric information acquired by the biometric information acquisition unit 30. For example, in the control table 70 shown in FIG. 7, the tempo of the music in the control mode 4 is set to “3”, and the volume is set to “8”. The control unit 140 changes the control table 70 to the contents shown in FIG. 7, for example, when the pulse, respiration, and body movement increase. The control table 70 of FIG. 7 is an example in which the effect of awakening is enhanced as compared with the example of FIG. Alternatively, the control unit 140 may change the control table 70 to the content shown in FIG. 6, for example, when there is no change in pulse, respiration, and body movement.
　また、制御部１４０は、睡眠導入音または覚醒音を出力してから睡眠状態または覚醒状態に移行するまでの時間をフラッシュメモリ２４に記録しておいてもよい。制御部１４０は、当該時間を音源毎、およびパラメータ毎に記録しておく。そして、制御部１４０は、所定のアルゴリズムを用いて、睡眠導入の効果の高い音源、およびパラメータを学習してもよい。 Further, the control unit 140 may record in the flash memory 24 the time from the output of the sleep introduction sound or the awakening sound to the transition to the sleep state or the awakening state. The control unit 140 records the time for each sound source and each parameter. Then, the control unit 140 may learn a sound source and a parameter having a high effect of sleep induction by using a predetermined algorithm.
　上記の例では、制御部１４０は、制御テーブル７０の内容を変更した。しかし、制御部１４０は、複数の制御テーブルから、生体情報に基づいて、１つの制御テーブルを選択してもよい。この場合、フラッシュメモリ２４は、生体情報に対応する制御テーブルを複数記憶している。また、生体情報に対応する複数の制御テーブルは、サーバに記憶しておいてもよい。この場合、制御部１４０は、生体情報をサーバに送信し、対応する制御テーブルを取得する。 In the above example, the control unit 140 changed the contents of the control table 70. However, the control unit 140 may select one control table from a plurality of control tables based on biological information. In this case, the flash memory 24 stores a plurality of control tables corresponding to biometric information. Further, a plurality of control tables corresponding to biometric information may be stored in the server. In this case, the control unit 140 transmits the biometric information to the server and acquires the corresponding control table.
　また、制御部１４０は、生体情報に加えて、利用者の年齢、性別、または国籍等の情報に基づいて制御テーブル７０を決定してもよい。利用者の年齢、性別、または国籍等の情報に対する制御テーブル７０の内容は、例えばサーバ（不図示）に記録されている。サーバは、多数の装置から、利用者の年齢、性別、または国籍等の情報に対する制御テーブル７０の内容を記録している。サーバは、これらの学習し、利用者の年齢、性別、または国籍等の情報に対する最適な制御テーブル７０を学習してもよい。制御部１４０は、通信部２１を介して、サーバに利用者の年齢、性別、または国籍等の情報を送信し、対応する制御テーブル７０を受信する。 Further, the control unit 140 may determine the control table 70 based on information such as the age, gender, nationality, etc. of the user in addition to the biometric information. The contents of the control table 70 with respect to information such as the age, gender, and nationality of the user are recorded in, for example, a server (not shown). The server records the contents of the control table 70 for information such as the age, gender, or nationality of the user from a large number of devices. The server may learn these and learn the optimum control table 70 for information such as the age, gender, or nationality of the user. The control unit 140 transmits information such as the age, gender, or nationality of the user to the server via the communication unit 21, and receives the corresponding control table 70.
　また、制御部１４０は、利用者を特定し、生体情報に加えて、利用者の特定結果に基づいて、制御テーブル７０を決定してもよい。利用者Ｅは、ユーザＩ／Ｆ２６を介して、制御テーブル７０の内容を編集する。利用者Ｅは、例えば自然音の種類、音楽の種類、テンポ、あるいは音量等の各種のパラメータを変更する。制御部１４０は、フラッシュメモリ２４に利用者Ｅの編集した内容を記録しておく。制御部１４０は、利用者Ｅの制御テーブル７０の編集内容に応じて、所定のアルゴリズムを用いて、利用者の好みのパラメータを学習してもよい。これにより、制御部１４０は、利用者の好みに応じた制御テーブル７０を決定する。 Further, the control unit 140 may specify the user and determine the control table 70 based on the user's specific result in addition to the biometric information. The user E edits the contents of the control table 70 via the user I / F26. User E changes various parameters such as the type of natural sound, the type of music, the tempo, or the volume. The control unit 140 records the edited contents of the user E in the flash memory 24. The control unit 140 may learn the user's favorite parameters by using a predetermined algorithm according to the edited contents of the control table 70 of the user E. As a result, the control unit 140 determines the control table 70 according to the user's preference.
　なお、上記実施形態では、寝室のベッド５に居る利用者Ｅに各種の音を出力する例を示した。しかし、音源装置２０は、例えばリビング等にいる利用者Ｅに対して、当該利用者Ｅが興奮状態であることを検出した場合に、リラックス音を出力してもよい。あるいは、音源装置２０は、オフィスにいる利用者Ｅに対して、当該利用者Ｅが入眠状態であることを検出した場合に、覚醒音を出力してもよい。 In the above embodiment, an example of outputting various sounds to the user E in the bed 5 of the bedroom is shown. However, the sound source device 20 may output a relaxing sound to the user E in the living room or the like when the user E is detected to be in an excited state. Alternatively, the sound source device 20 may output an awakening sound to the user E in the office when the user E is detected to be in a sleep state.
　（第２実施形態）　
　次に、図８は、第２実施形態に係る音源装置２０Ａを含む音再生システム１Ａの構成を示す概略図である。図１に示した構成と同じ構成は同じ符号を付し、説明を省略する。音再生システム１Ａは、アレイスピーカ５０を備えている。アレイスピーカ５０は、図１のスピーカ５１およびスピーカ５２と同様に、リラックス音、睡眠導入音、快眠音、または覚醒音等を含む様々な音を出力する。 (Second Embodiment)
Next, FIG. 8 is a schematic view showing the configuration of the sound reproduction system 1A including the sound source device 20A according to the second embodiment. The same configurations as those shown in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted. The sound reproduction system 1A includes an array speaker 50. Similar to the speaker 51 and the speaker 52 of FIG. 1, the array speaker 50 outputs various sounds including a relaxing sound, a sleep introducing sound, a good sleep sound, an awakening sound, and the like.
　アレイスピーカ５０は、複数のスピーカを備える。アレイスピーカ５０は、配列した複数のスピーカに供給する音信号の音量および放音タイミングを制御することで、指向性を制御することができる。図８の例では、アレイスピーカ５０は、ベッド５から離れた所定の位置に配置されている。図８の例では、アレイスピーカ５０は、ベッド５の短軸方向に平行な方向に複数のスピーカを配列している。音源装置２０Ａとアレイスピーカ５０は、無線通信機能あるいは有線通信機能で接続される。アレイスピーカ５０は、音源装置２０から出力されるステレオの左（Ｌ）チャンネルの音信号およびステレオの右（Ｌ）チャンネルの音信号を内蔵アンプで増幅して放音する。 The array speaker 50 includes a plurality of speakers. The array speaker 50 can control the directivity by controlling the volume and the sound emission timing of the sound signals supplied to the plurality of arranged speakers. In the example of FIG. 8, the array speaker 50 is arranged at a predetermined position away from the bed 5. In the example of FIG. 8, the array speaker 50 arranges a plurality of speakers in a direction parallel to the minor axis direction of the bed 5. The sound source device 20A and the array speaker 50 are connected by a wireless communication function or a wired communication function. The array speaker 50 amplifies the stereo left (L) channel sound signal and the stereo right (L) channel sound signal output from the sound source device 20 by the built-in amplifier and emits the sound.
　図９は、音源装置２０Ａの構成を示すブロック図である。音源装置２０Ａは、音源装置２０と同じハードウェアを備える。そのため、各ハードウェア構成は同じ符号を付し、説明を省略する。この実施形態では、音源装置２０Ａは、室内用音環境生成装置の一例である。 FIG. 9 is a block diagram showing the configuration of the sound source device 20A. The sound source device 20A includes the same hardware as the sound source device 20. Therefore, each hardware configuration is designated by the same reference numeral, and the description thereof will be omitted. In this embodiment, the sound source device 20A is an example of an indoor sound environment generation device.
　音源装置２０Ａのフラッシュメモリ２４は、さらに、位置情報取得部７５および推定部８０を構成するためのプログラムを記憶している。音源装置２０Ａのプロセッサ２２は、フラッシュメモリ２４から読み出したプログラムにより、さらに、位置情報取得部７５および推定部８０を構成する。位置情報取得部７５は、利用者の位置に関する情報（例えば、室内の座標）を取得する。推定部８０は、生体情報に基づいて、利用者の心身状態を推定する。例えば、推定部８０は、脈拍、呼吸、体動、脳波、あるいは血圧等の生体情報が高い値（所定の閾値以上）である場合には、利用者が興奮状態であると判定する。また、推定部８０は、脈拍、呼吸、体動、脳波、あるいは血圧等の生体情報が低い値（所定の閾値以上）であり、かつ時間経過とともにこれらの値がさらに低下するときは、入眠状態であると判断する。また、推定部８０は、レム睡眠またはノンレム睡眠に該当する脳波を検出した場合に、睡眠状態であると判定する。また、推定部８０は、脈拍、呼吸、体動、脳波、あるいは血圧等の生体情報が低い値（所定の閾値以上）であり、かつ時間経過とともにこれらの値が上昇するときは、起床状態であると判断する。 The flash memory 24 of the sound source device 20A further stores a program for configuring the position information acquisition unit 75 and the estimation unit 80. The processor 22 of the sound source device 20A further constitutes the position information acquisition unit 75 and the estimation unit 80 by the program read from the flash memory 24. The position information acquisition unit 75 acquires information regarding the position of the user (for example, coordinates in the room). The estimation unit 80 estimates the physical and mental state of the user based on the biological information. For example, the estimation unit 80 determines that the user is in an excited state when the biological information such as pulse, respiration, body movement, brain wave, or blood pressure is a high value (greater than or equal to a predetermined threshold value). Further, the estimation unit 80 is in a state of falling asleep when biological information such as pulse, respiration, body movement, electroencephalogram, or blood pressure is low (above a predetermined threshold value) and these values further decrease with the passage of time. Judge that. Further, the estimation unit 80 determines that it is in a sleeping state when it detects an electroencephalogram corresponding to REM sleep or non-REM sleep. Further, when the biological information such as pulse, respiration, body movement, brain wave, or blood pressure is low (above a predetermined threshold value) and these values increase with the passage of time, the estimation unit 80 is in a wake-up state. Judge that there is.
　図１０は、音源装置２０Ａの動作を示すフローチャートである。まず、生体情報取得部３０は、通信部２１を介して生体情報を取得し、位置情報取得部７５は、利用者Ｅの位置情報を取得する（Ｓ２１）。 FIG. 10 is a flowchart showing the operation of the sound source device 20A. First, the biometric information acquisition unit 30 acquires biometric information via the communication unit 21, and the position information acquisition unit 75 acquires the position information of the user E (S21).
　位置情報取得部７５は、例えばセンサ１２またはセンサ１３を介して位置情報を取得する。センサ１２は、枕の下に敷かれ、センサ１３は、ベッドの上に敷かれる。したがって、位置情報取得部７５は、センサ１２またはセンサ１３から生体情報を取得した場合に、利用者Ｅがベッド５に居て、枕の位置に頭の位置が存在すると判断する。位置情報は、例えば室内を平面視した座標で表される。例えば、利用者Ｅは、予めユーザＩ／Ｆ１６を介して、センサ１２、センサ１３、およびアレイスピーカ５０の座標を入力する。位置情報取得部７５は、予めセンサ１２、センサ１３、およびアレイスピーカ５０の座標を取得する。 The position information acquisition unit 75 acquires position information via, for example, the sensor 12 or the sensor 13. The sensor 12 is laid under the pillow and the sensor 13 is laid on the bed. Therefore, when the position information acquisition unit 75 acquires the biological information from the sensor 12 or the sensor 13, the position information acquisition unit 75 determines that the user E is in the bed 5 and the head position exists at the position of the pillow. The position information is represented by, for example, the coordinates when the room is viewed in a plane. For example, the user E inputs the coordinates of the sensor 12, the sensor 13, and the array speaker 50 in advance via the user I / F16. The position information acquisition unit 75 acquires the coordinates of the sensor 12, the sensor 13, and the array speaker 50 in advance.
　また、位置情報取得部７５は、利用者の身につけているセンサ１１を介して位置情報を取得してもよい。センサ１１は、例えばＢｌｕｅｔｏｏｔｈ（登録商標）のビーコン信号を送信する。位置情報取得部７５は、ビーコン信号の受信電波強度に基づいて、センサ１１との距離を測定する。電波強度は、距離の二乗に反比例するため、センサ１１と音源装置２０Ａとの距離に関する情報に変換することができる。位置情報取得部７５は、当該距離の情報を３つ以上取得すれば、センサ１１の位置を一意に特定できる。例えば、アレイスピーカ５０がセンサ１１のビーコン信号を受信し、位置情報取得部７５がアレイスピーカ５０からビーコン信号の受信電波強度に関する情報を受信してもよい。また、利用者Ｅは、室内にビーコン信号を受信するための複数の端末を設定してもよい。この場合、位置情報取得部７５は、複数の端末からビーコン信号の受信電波強度に関する情報を受信する。 Further, the position information acquisition unit 75 may acquire the position information via the sensor 11 worn by the user. The sensor 11 transmits, for example, a Bluetooth® beacon signal. The position information acquisition unit 75 measures the distance to the sensor 11 based on the received radio wave intensity of the beacon signal. Since the radio wave intensity is inversely proportional to the square of the distance, it can be converted into information regarding the distance between the sensor 11 and the sound source device 20A. The position information acquisition unit 75 can uniquely identify the position of the sensor 11 by acquiring three or more pieces of information on the distance. For example, the array speaker 50 may receive the beacon signal of the sensor 11, and the position information acquisition unit 75 may receive information regarding the received radio wave intensity of the beacon signal from the array speaker 50. Further, the user E may set a plurality of terminals for receiving the beacon signal in the room. In this case, the position information acquisition unit 75 receives information on the received radio field strength of the beacon signal from a plurality of terminals.
　また、位置情報取得部７５は、温度センサを用いて利用者Ｅの位置を特定してもよい。例えば、位置情報取得部７５は、温度センサを介して摂氏３６度程度の対象物を検出した場合に、当該対象物が利用者Ｅであると判断し、当該対象物の座標を取得することで位置情報を取得してもよい。 Further, the position information acquisition unit 75 may specify the position of the user E by using the temperature sensor. For example, when the position information acquisition unit 75 detects an object of about 36 degrees Celsius via a temperature sensor, it determines that the object is user E and acquires the coordinates of the object. The position information may be acquired.
　次に、音源装置２０Ａは、音信号を取得する（Ｓ２２）。プロセッサ２２は、図３の機能ブロック図で示した態様と同様に、生体情報取得部３０、音源部４０、制御部１４０、および読出部１４５により、音信号を取得する。ただし、第２実施形態に係る音源装置２０Ａは、第１実施形態で示した態様で音信号を取得する必要はない。例えば、音源装置２０Ａは、フラッシュメモリ２４に記憶している特定のコンテンツを読み出すことで音信号を取得してもよい。また、音源装置２０Ａは、利用者の所持するスマートフォン等の情報処理端末、またはサーバ等の他装置から特定のコンテンツを受信することで音信号を取得してもよい。 Next, the sound source device 20A acquires a sound signal (S22). The processor 22 acquires a sound signal by the biological information acquisition unit 30, the sound source unit 40, the control unit 140, and the reading unit 145, as in the embodiment shown in the functional block diagram of FIG. However, the sound source device 20A according to the second embodiment does not need to acquire the sound signal in the mode shown in the first embodiment. For example, the sound source device 20A may acquire a sound signal by reading out a specific content stored in the flash memory 24. Further, the sound source device 20A may acquire a sound signal by receiving a specific content from an information processing terminal such as a smartphone owned by the user or another device such as a server.
　そして、制御部１４０は、生体情報および位置情報に基づいて音像定位処理を行なう（Ｓ２３）。音像定位処理は、例えば、アレイスピーカ５０の複数のスピーカに供給する音信号の音量および放音タイミングを制御することで、指向性を制御する処理である。 Then, the control unit 140 performs sound image localization processing based on the biological information and the position information (S23). The sound image localization process is, for example, a process of controlling the directivity by controlling the volume and the sound emission timing of the sound signals supplied to the plurality of speakers of the array speaker 50.
　例えば、制御部１４０は、位置情報に基づいて、図１１に示す様に、アレイスピーカ５０の出力する音の指向性を利用者Ｅの居る位置に向ける。さらに、制御部１４０は、生体情報に基づいて、指向性を制御する。例えば、制御部１４０は、利用者Ｅがベッド５の位置に居る場合でも、推定部８０が覚醒状態であると判断した場合には、室内全体に音楽等のコンテンツの音を出力する。あるいは、制御部１４０は、利用者Ｅがベッド５以外の場所に居る場合には、室内全体に音楽等のコンテンツの音を出力してもよい。また、制御部１４０は、利用者Ｅがベッド５以外の場所に居る場合でも、推定部８０が入眠状態であると判断した場合には、覚醒音を出力してもよい。 For example, the control unit 140 directs the directivity of the sound output from the array speaker 50 to the position where the user E is, as shown in FIG. 11, based on the position information. Further, the control unit 140 controls the directivity based on the biological information. For example, the control unit 140 outputs the sound of content such as music to the entire room when the estimation unit 80 determines that the estimation unit 80 is in the awake state even when the user E is at the position of the bed 5. Alternatively, the control unit 140 may output the sound of content such as music to the entire room when the user E is in a place other than the bed 5. Further, the control unit 140 may output an awakening sound when the estimation unit 80 determines that the estimation unit 80 is in a sleep state even when the user E is in a place other than the bed 5.
　この様にして、制御部１４０は、指向性を制御した音像定位処理を行なう。その後、制御部１４０は、オーディオＩ／Ｆ１７を介して、アレイスピーカ５０に音信号を出力する（Ｓ２４）。なお、制御部１４０は、アレイスピーカ５０の音量および放音タイミングを調整した後の音信号を出力してもよいが、各チャンネルの音信号および音量および放音タイミングを示す情報（音像定位情報）をアレイスピーカ５０に出力してもよい。この場合、アレイスピーカ５０が、音量調整および放音タイミングの調整を行なう。また、制御部１４０は、音信号と、指向性を制御するための情報（例えば音の方向を示す座標）をアレイスピーカ５０に出力してもよい。この場合、アレイスピーカ５０が音量調整量および放音タイミングの調整量を計算する。 In this way, the control unit 140 performs the sound image localization process in which the directivity is controlled. After that, the control unit 140 outputs a sound signal to the array speaker 50 via the audio I / F17 (S24). The control unit 140 may output a sound signal after adjusting the volume and sound emission timing of the array speaker 50, but information indicating the sound signal and volume and sound emission timing of each channel (sound image localization information). May be output to the array speaker 50. In this case, the array speaker 50 adjusts the volume and the sound emission timing. Further, the control unit 140 may output a sound signal and information for controlling the directivity (for example, coordinates indicating the direction of the sound) to the array speaker 50. In this case, the array speaker 50 calculates the volume adjustment amount and the sound emission timing adjustment amount.
　次に、図１２は、第２実施形態の変形例に係る音源装置２０Ａの動作を示すフローチャートである。図１０と共通する動作については同じ符号を付し、説明を省略する。 Next, FIG. 12 is a flowchart showing the operation of the sound source device 20A according to the modified example of the second embodiment. The same reference numerals are given to the operations common to those in FIG. 10, and the description thereof will be omitted.
　変形例に係る音源装置２０Ａの制御部１４０は、さらに利用者を特定する（Ｓ２００）。この場合、制御部１４０は、利用者を特定する特定部として機能する。制御部１４０は、生体情報および位置情報に加えて、利用者の特定結果に基づいて、音像定位処理を行なう。例えば、制御部１４０は、各種の音を特定の利用者にのみ到達するように指向性を制御する。 The control unit 140 of the sound source device 20A according to the modified example further identifies the user (S200). In this case, the control unit 140 functions as a specific unit that identifies the user. The control unit 140 performs sound image localization processing based on the user's specific result in addition to the biological information and the position information. For example, the control unit 140 controls the directivity so that various sounds reach only a specific user.
　例えば、制御部１４０は、図１３に示す様に、アレイスピーカ５０の出力する音の指向性を特定の利用者Ｅ２の居る位置に向ける。これにより、利用者Ｅ１には、アレイスピーカ５０の出力する音が聞こえにくい。例えば、利用者Ｅ１が起床時刻を午前８時に設定し、利用者Ｅ２が起床時刻を午前９時に設定した場合に、制御部１４０は、午前８時に覚醒音を利用者Ｅ２に出力する。この場合、利用者Ｅ１の就寝を妨げることなく、利用者Ｅ２にのみ覚醒音を聞かせることができる。 For example, as shown in FIG. 13, the control unit 140 directs the directivity of the sound output by the array speaker 50 to the position where the specific user E2 is. As a result, it is difficult for the user E1 to hear the sound output by the array speaker 50. For example, when the user E1 sets the wake-up time at 8:00 am and the user E2 sets the wake-up time at 9:00 am, the control unit 140 outputs an awakening sound to the user E2 at 8:00 am. In this case, only the user E2 can hear the awakening sound without disturbing the user E1 to go to bed.
　なお、音源装置２０Ａは、キャンセル音を取得し、特定の利用者以外の人にキャンセル音を定位させる処理を行なってもよい。例えば、制御部１４０は、図１４に示す様に、特定の利用者Ｅ２には、覚醒音に係る音ビームＢ１を出力する。制御部１４０は、他の利用者Ｅ１には、キャンセル音に係る音ビームＢ２を出力する。キャンセル音は、覚醒音に係る音ビームＢ１の逆位相の音である。キャンセル音に係る音ビームＢ２は、覚醒音に係る音ビームＢ１から漏れる覚醒音をキャンセルすることができる。したがって、さらに利用者Ｅ１の就寝を妨げることなく、利用者Ｅ２にのみ覚醒音を聞かせることができる。 Note that the sound source device 20A may perform a process of acquiring the cancel sound and localizing the cancel sound to a person other than a specific user. For example, as shown in FIG. 14, the control unit 140 outputs the sound beam B1 related to the awakening sound to the specific user E2. The control unit 140 outputs the sound beam B2 related to the cancel sound to the other user E1. The cancel sound is a sound having the opposite phase of the sound beam B1 related to the awakening sound. The sound beam B2 related to the cancel sound can cancel the awakening sound leaking from the sound beam B1 related to the awakening sound. Therefore, the awakening sound can be heard only by the user E2 without further hindering the user E1 from going to bed.
　本実施形態の説明は、すべての点で例示であって、制限的なものではないと考えられるべきである。本発明の範囲は、上述の実施形態ではなく、特許請求の範囲によって示される。さらに、本発明の範囲は、特許請求の範囲と均等の範囲を含む。 The description of this embodiment should be considered to be exemplary in all respects and not restrictive. The scope of the present invention is shown not by the above-described embodiment but by the scope of claims. Furthermore, the scope of the present invention includes the scope equivalent to the claims.
　例えば、上記実施形態では、音像定位処理の一例としてアレイスピーカの指向性を制御する例を示した。しかし、例えば指向性スピーカの放音方向をモータ等により物理的に変更することでも、音像定位処理を行なうことができる。また、室内に複数のスピーカを配置し、特定の利用者に最も近い位置のスピーカにのみ覚醒音等の音を出力させることでも、音像定位処理を行なうことができる。また、音像定位処理は、例えば音信号に頭部伝達関数を畳み込む処理であってもよい。 For example, in the above embodiment, an example of controlling the directivity of the array speaker is shown as an example of sound image localization processing. However, for example, the sound image localization process can be performed by physically changing the sound emission direction of the directional speaker by a motor or the like. Further, the sound image localization process can also be performed by arranging a plurality of speakers in the room and outputting a sound such as an awakening sound only to the speaker at the position closest to the specific user. Further, the sound image localization process may be, for example, a process of convolving a head-related transfer function into a sound signal.
Ｅ，Ｅ１，Ｅ２…利用者
１，１Ａ…音再生システム
１Ａ…音再生システム
５…ベッド
１１，１２，１３…センサ
２０，２０Ａ…音源装置
２１…通信部
２２…プロセッサ
２３…ＲＡＭ
２４…フラッシュメモリ
２５…表示器
２６…ユーザＩ／Ｆ
２７…オーディオＩ／Ｆ
３０…生体情報取得部
４０…音源部
５０…アレイスピーカ
５１，５２…スピーカ
７０…制御テーブル
７５…位置情報取得部
８０…推定部
１４０…制御部
１４５…読出部
４１０，４２０，４３０，４４０…音源部 E, E1, E2 ... Users 1, 1A ... Sound reproduction system 1A ... Sound reproduction system 5 ... Beds 11, 12, 13 ... Sensors 20, 20A ... Sound source device 21 ... Communication unit 22 ... Processor 23 ... RAM
24 ... Flash memory 25 ... Display 26 ... User I / F
27 ... Audio I / F
30 ... Biological information acquisition unit 40 ... Sound source unit 50 ... Array speakers 51, 52 ... Speaker 70 ... Control table 75 ... Position information acquisition unit 80 ... Estimating unit 140 ... Control unit 145 ... Reading unit 410, 420, 430, 440 ... Sound source Department

Claims (20)

  1. 　音信号を取得する音信号取得部と、
    　音信号を出力する音信号出力部と、
    　利用者の生体情報を取得する生体情報取得部と、
    　利用者の位置情報を取得する位置情報取得部と、
    　前記生体情報および前記位置情報に基づいて前記音信号の音像定位を制御する制御部と、
    　を備えた室内用音環境生成装置。     A sound signal acquisition unit that acquires sound signals,
    A sound signal output unit that outputs a sound signal and
    The biometric information acquisition unit that acquires the biometric information of the user,
    The location information acquisition unit that acquires the location information of the user, and
    A control unit that controls the sound image localization of the sound signal based on the biological information and the position information.
    Indoor sound environment generator equipped with.
  2. 　前記生体情報に基づいて、利用者の心身状態を推定する推定部を備え、
    　前記制御部は、前記推定部の推定結果および前記位置情報に基づいて、前記音像定位を制御する、
    　請求項１に記載の室内用音環境生成装置。     It is equipped with an estimation unit that estimates the physical and mental condition of the user based on the biological information.
    The control unit controls the sound image localization based on the estimation result of the estimation unit and the position information.
    The indoor sound environment generator according to claim 1.
  3. 　前記位置情報取得部は、利用者が身につけるセンサを介して前記位置情報を取得する、
    　請求項１または請求項２に記載の室内用音環境生成装置。     The position information acquisition unit acquires the position information via a sensor worn by the user.
    The indoor sound environment generator according to claim 1 or 2.
  4. 　前記制御部は、前記音信号の指向性を制御することで、前記音像定位を制御する、
    　請求項１乃至請求項３のいずれか１項に記載の室内用音環境生成装置。     The control unit controls the sound image localization by controlling the directivity of the sound signal.
    The indoor sound environment generator according to any one of claims 1 to 3.
  5. 　前記利用者を特定する特定部を備え、
    　前記制御部は、さらに前記特定部の特定結果に基づいて前記音像定位を制御する、
    　請求項１乃至請求項４のいずれか１項に記載の室内用音環境生成装置。     It is equipped with a specific part that identifies the user.
    The control unit further controls the sound image localization based on the specific result of the specific unit.
    The indoor sound environment generator according to any one of claims 1 to 4.
  6. 　前記音信号取得部は、キャンセル音を取得し、
    　前記制御部は、前記利用者以外の人に前記キャンセル音を定位させる、
    　請求項５に記載の室内用音環境生成装置。     The sound signal acquisition unit acquires a cancel sound and
    The control unit localizes the canceling sound to a person other than the user.
    The indoor sound environment generator according to claim 5.
  7. 　利用者の生体情報を取得する生体情報取得部と、
    　複数の音源部と、
    　前記生体情報に基づいて前記複数の音源部を制御するための制御テーブルを決定し、決定した制御テーブルに基づいて前記複数の音源部を制御する制御部と、
    　前記制御部の制御に応じて前記複数の音源部から音源を読み出す読出部と、
    　を備えた音源装置。     The biometric information acquisition unit that acquires the biometric information of the user,
    With multiple sound sources
    A control table for controlling the plurality of sound source units is determined based on the biological information, and a control unit for controlling the plurality of sound source units based on the determined control table.
    A reading unit that reads sound sources from the plurality of sound source units according to the control of the control unit, and
    Sound source device equipped with.
  8. 　前記生体情報取得部は、前記生体情報を複数回取得し、
    　前記制御部は、前記生体情報取得部で前記生体情報を取得する毎に、前記制御テーブルの決定を繰り返す、
    　請求項７に記載の音源装置。     The biometric information acquisition unit acquires the biometric information a plurality of times.
    The control unit repeats the determination of the control table every time the biometric information acquisition unit acquires the biometric information.
    The sound source device according to claim 7.
  9. 　前記制御部は、複数の制御テーブルから、前記生体情報に基づいて、１つの制御テーブルを選択する、
    　請求項７または請求項８に記載の音源装置。     The control unit selects one control table from a plurality of control tables based on the biometric information.
    The sound source device according to claim 7 or 8.
  10. 　前記音源は、睡眠導入音または覚醒音を含む、
    　請求項７乃至請求項９のいずれか１項に記載の音源装置。     The sound source includes a sleep-inducing sound or an awakening sound.
    The sound source device according to any one of claims 7 to 9.
  11. 　音信号を取得し、
    　音信号を出力し、
    　利用者の生体情報を取得し、
    　利用者の位置情報を取得し、
    　前記生体情報および前記位置情報に基づいて前記音信号の音像定位を制御する、
    　室内用音環境生成方法。     Get the sound signal,
    Output a sound signal,
    Obtain the biometric information of the user and
    Get the user's location information and
    Controlling the sound image localization of the sound signal based on the biological information and the position information.
    How to generate a sound environment for a room.
  12. 　前記生体情報に基づいて、利用者の心身状態を推定し、
    　前記推定の結果および前記位置情報に基づいて、前記音像定位を制御する、
    　請求項１１に記載の室内用音環境生成方法。     Based on the biometric information, the physical and mental condition of the user is estimated.
    The sound image localization is controlled based on the estimation result and the position information.
    The method for generating an indoor sound environment according to claim 11.
  13. 　前記位置情報を取得することにおいて、利用者が身につけるセンサを介して前記位置情報を取得する、
    　請求項１１または請求項１２に記載の室内用音環境生成方法。     In acquiring the position information, the position information is acquired via a sensor worn by the user.
    The method for generating an indoor sound environment according to claim 11 or 12.
  14. 　前記音信号の指向性を制御することで、前記音像定位を制御する、
    　請求項１１乃至請求項１３のいずれか１項に記載の室内用音環境生成方法。     By controlling the directivity of the sound signal, the sound image localization is controlled.
    The method for generating an indoor sound environment according to any one of claims 11 to 13.
  15. 　前記利用者を特定し、
    　さらに前記特定の結果に基づいて前記音像定位を制御する、
    　請求項１１乃至請求項１４のいずれか１項に記載の室内用音環境生成方法。     Identify the user and
    Further, the sound image localization is controlled based on the specific result.
    The method for generating an indoor sound environment according to any one of claims 11 to 14.
  16. 　キャンセル音を取得し、
    　前記利用者以外の人に前記キャンセル音を定位させる、
    　請求項１５に記載の室内用音環境生成方法。     Get the cancel sound,
    Localize the cancel sound to a person other than the user.
    The method for generating an indoor sound environment according to claim 15.
  17. 　利用者の生体情報を取得し、
    　前記生体情報に基づいて複数の音源部を制御するための制御テーブルを決定し、決定した制御テーブルに基づいて前記複数の音源部を制御し、
    　前記制御に応じて前記複数の音源部から音源を読み出す、
    　音源装置の制御方法。     Obtain the biometric information of the user and
    A control table for controlling a plurality of sound source units is determined based on the biological information, and the plurality of sound source units are controlled based on the determined control table.
    A sound source is read from the plurality of sound source units according to the control.
    How to control the sound source device.
  18. 　前記生体情報を複数回取得し、
    　前記生体情報を取得する毎に、前記制御テーブルの決定を繰り返す、
    　請求項１７に記載の音源装置の制御方法。     The biometric information is acquired multiple times,
    Every time the biological information is acquired, the determination of the control table is repeated.
    The control method for a sound source device according to claim 17.
  19. 　複数の制御テーブルから、前記生体情報に基づいて、１つの制御テーブルを選択する、
    　請求項１７または請求項１８に記載の音源装置の制御方法。     One control table is selected from a plurality of control tables based on the biometric information.
    The control method for a sound source device according to claim 17 or 18.
  20. 　前記音源は、睡眠導入音または覚醒音を含む、
    　請求項１７乃至請求項１９のいずれか１項に記載の音源装置の制御方法。     The sound source includes a sleep-inducing sound or an awakening sound.
    The control method for a sound source device according to any one of claims 17 to 19.
PCT/JP2020/013201 2020-03-25 2020-03-25 Indoor sound environment generation apparatus, sound source apparatus, indoor sound environment generation method, and sound source apparatus control method WO2021192072A1 (en)

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WO2024053123A1 (en) * 2022-09-05 2024-03-14 パナソニックＩｐマネジメント株式会社 Playback system, playback method, and program

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WO2024009677A1 (en) * 2022-07-04 2024-01-11 ヤマハ株式会社 Sound processing method, sound processing device, and program
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