CN106231497A - Vehicle-mounted loudspeaker broadcast sound volume adjusting apparatus, method and vehicle - Google Patents
Vehicle-mounted loudspeaker broadcast sound volume adjusting apparatus, method and vehicle Download PDFInfo
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- CN106231497A CN106231497A CN201610828350.6A CN201610828350A CN106231497A CN 106231497 A CN106231497 A CN 106231497A CN 201610828350 A CN201610828350 A CN 201610828350A CN 106231497 A CN106231497 A CN 106231497A
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
- H04R2430/01—Aspects of volume control, not necessarily automatic, in sound systems
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- Circuit For Audible Band Transducer (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The open a kind of vehicle-mounted loudspeaker broadcast sound volume adjusting apparatus of the present invention, method and vehicle, this device includes: mike, audio-frequency power amplifier, speaker, digital signal processing circuit, speaker volume control module；Described digital signal processing circuit is used for judging that internal loudspeaker sound the most no more than sets volume value；When user talks sound no more than setting volume value, reduce the volume value of speaker；Speaker is play according to the volume value after reducing.Device, method and the vehicle that the present invention provides, by Digital Signal Processing, the loudspeaker sound peace talk language tone signal in vehicle-mounted space is separated, then music playback volume is adjusted according to loudspeaker sound and conversational speech comparing result, reach talk volume higher than the effect of speaker volume, be not required to Non-follow control volume and can realize controlling thus reach musical sound and do not affect the effect of talk speaker volume.
Description
Technical field
The present invention relates to vehicular field, particularly relate to a kind of vehicle-mounted loudspeaker broadcast sound volume adjusting apparatus, method and vehicle.
Background technology
The current continuous evolution of automotive infotainment, but listen music be still that amusement side main when people drive
Formula, during music is play in driving, if the loudspeaker sound excessive talk often disturbing user when vehicle occupant talks, needs
Want user manually to turn down speaker volume, after talk terminates, the most manually heighten volume.
Prior art have ignored the interference that people is talked by music process in car, therefore, it is necessary to provide a kind of vehicle-mounted
Speaker broadcast sound volume adjusts and controls device and appreciates music and nor affect on, to reach neither to affect, the purpose that people talks, and reduces
User frequently adjusts the work of volume.
Summary of the invention
One the invention solves the problems that technical problem is how to provide a kind of vehicle-mounted loudspeaker broadcast sound volume adjust and control
Device is appreciated music and is nor affected on, to reach neither to affect, the purpose that people talks, and reduces user and frequently adjust the work of volume.
The present invention provides a kind of vehicle-mounted loudspeaker broadcast sound volume adjusting apparatus, including: mike, audio-frequency power amplifier,
Speaker, digital signal processing circuit, speaker volume control module；Wherein, mike is for obtaining the sound in car, described
Sound in car includes that the user in internal loudspeaker sound, car talks sound；Described digital signal processing circuit and described wheat
Gram wind, audio-frequency power amplifier are connected, and described digital signal processing circuit includes that digital-to-analogue converter ADC, average volume calculate
Unit R MS, voice detector VAD, comparator, gain circuitry, subtraction circuit, convolution circuit；Described digital-to-analogue converter includes
One digital-to-analogue converter, the second digital-to-analogue converter；Described average volume computing unit include the first average volume computing unit, second
Average volume computing unit；Wherein, the first digital-to-analogue converter is for obtaining the broadcast sound volume of audio-frequency power amplifier, the second digital-to-analogue
Converter is acoustical signal in the sound obtained according to mike obtains car；Voice detector is for according to acoustical signal in car
Judge whether to exist user to talk sound, loudspeaker sound simultaneously；If there is user for simultaneously in average volume computing unit
Talk sound, loudspeaker sound, determine loudspeaker sound average volume RMS1 by the first average volume computing unit, by
Two average volume computing unit user's Conversation Voice sound average volume RMS2；Comparator is used for judging user's Conversation Voice sound average volume
RMS2 the most no more than sets volume value, and described setting volume value determines according to described loudspeaker sound average volume RMS1；Raise
Sound device volume control module, is connected with digital signal processing circuit, is used for when user's Conversation Voice sound average volume RMS2 is little
In time setting volume value, reduce the volume value of speaker described setting volume value is talked sound less than user setting ratio
Average volume RMS2；Audio-frequency power amplifier makes speaker play according to the volume value after reducing.
Further, digital signal processing circuit also includes shock response module, if shock response module is for detection
To the sound of speaker, determine speaker transfer function H (s)=Y (s)/X (s) to mike, obtain numeral by discretization
Territory transfer function H (z), and then obtain impulse Response Function h (n).
Further, digital signal processing circuit is used for: determine that the loudspeaker sound detected and user talk sound Y
T ()+M (t), is y (n)+m (n) by described second digital to analog converter acquisition sound words integrated signal；By audio-frequency power amplifier
Reference signal X (t) through the first digital to analog converter ADC1 process, after discretization, obtain x (n)；By the X obtained
T () obtains y (n)=x (n) * h (n) to impulse Response Function h (n) of Y (t)；Combined according to described sound words by described subtraction circuit
Close signal y (n)+m (n) and speaker is delivered to user's Conversation Voice tone signal m in acoustical signal y (n) the acquisition car of mike
(n)；User's Conversation Voice tone signal m (n) in car is input to voice detector VAD, it may be judged whether there is user and talk sound, when
Judge exist user talk sound time, then digital signal processing circuit perform whether judge user's Conversation Voice sound average volume RMS2
No more than set volume value.
Further, digital signal processing circuit is additionally operable to: after the setting time performing described reduction volume instructions
Judge whether to there is loudspeaker sound according to acoustical signal in car, user talks sound simultaneously；If can't detect user to talk
Sound, then perform volume and improve instruction, speaker volume returns to the volume before reducing.
Further, gain circuitry is used for determining described setting volume value, wherein, described set volume value as described in raise one's voice
The setting ratio value of device sound average volume RMS1；Or, the described volume value that sets is as described loudspeaker sound average volume RMS1
With set decibel value and.
Further, user's sound of talking includes the Conversation Voice of user and the talk sound of user, user and smart machine
Sound.
Further, speaker volume control module gradually reduces the volume of speaker with setting ratio, often reduces once
Rolling counters forward is once.
Further, if speaker volume control module is talked sound, then according to enumerator for can't detect user
Count results performs volume and improves instruction, and speaker volume returns to the volume before reducing.
The present invention also provides for a kind of vehicle, including: vehicle-mounted loudspeaker broadcast sound volume adjusting apparatus as above.
The present invention also provides for a kind of vehicle-mounted loudspeaker broadcast sound volume method of adjustment, including: the sound in detection car obtains car
Interior acoustical signal, the sound in described car includes that the user in loudspeaker sound, car talks sound；Sentence according to acoustical signal in car
Disconnected there is loudspeaker sound, user talks sound the most simultaneously；If there is loudspeaker sound, user talks sound, really simultaneously
Determine loudspeaker sound average volume RMS1 and user's Conversation Voice sound average volume RMS2；Judge user's Conversation Voice sound average volume
RMS2 the most no more than sets volume value, and described setting volume value determines according to described loudspeaker sound average volume RMS1；When
When user's Conversation Voice sound average volume RMS2 is not more than setting volume value, sends reduction audio volume command to speaker and raise one's voice to reduce
The volume of device, wherein, reduces the volume value of speaker described setting volume value is talked sound less than user setting ratio
Average volume RMS2；Speaker is play according to the volume value after reducing.
Further, it may be judged whether there is loudspeaker sound, user talks and includes: detecting whether before sound to exist simultaneously
Loudspeaker sound；If be detected that the sound of speaker, determine speaker transfer function H (s)=Y (s)/X to mike
S (), obtains numeric field transfer function H (z) by discretization, and then obtains impulse Response Function h (n).
Further, judge whether to there is loudspeaker sound described in, user's sound of talking includes simultaneously: according to detect
Loudspeaker sound and user talk sound Y (t)+M (t) acquisition sound words integrated signal be y (n)+m (n)；By audio-frequency power amplifier
Reference signal X (t) be x (n) through processing, obtaining signal after discretization；The impact of the X (t) to Y (t) by having obtained
Receptance function h (n) obtains y (n)=x (n) * h (n)；It is delivered to according to described sound words integrated signal y (n)+m (n) and speaker
Acoustical signal y (n) of mike obtains user's Conversation Voice tone signal m (n) in car；By defeated for user's Conversation Voice tone signal m (n) in car
Enter to voice detector VAD, it may be judged whether there is user and talk sound, when judge to exist user talk sound time, perform judgement
Whether user's Conversation Voice sound average volume RMS2 is not more than the step setting volume value.
Further, described when user's Conversation Voice sound average volume RMS2 is not more than and sets volume value, send out to speaker
Send and include after reducing the audio volume command volume with reduction speaker: after the setting time performing described reduction volume instructions
Judge whether to there is loudspeaker sound according to acoustical signal in car, user talks sound simultaneously；If can't detect user to talk
Sound, then perform volume and improve instruction, speaker volume returns to the volume before reducing.
Further, described setting volume value determines according to described loudspeaker sound average volume RMS1 and includes: described in set
Accordatura value is the setting ratio value of described loudspeaker sound average volume RMS1；Or, described set volume value as described in raise one's voice
Device sound average volume RMS1 with set decibel value and；And/or, user's sound of talking includes the Conversation Voice of user and user
The talk sound of sound, user and smart machine；And/or, gradually reduce the volume of speaker setting ratio, often reduce once,
Rolling counters forward is once；And/or, talk sound if can't detect user, then perform volume according to rolling counters forward result and carry
High instruction, returns to the volume before reducing by speaker volume.
The present invention provides vehicle-mounted loudspeaker broadcast sound volume adjusting apparatus, method and vehicle, passes through Digital Signal Processing
Loudspeaker sound peace talk language tone signal in vehicle-mounted space is separated, then according to loudspeaker sound and conversational speech pair
Adjust music playback volume than result, reach the talk volume effect higher than speaker volume, be not required to Non-follow control volume
Realize the control on speaker volume thus reach musical sound and do not affect the effect of talk.
Accompanying drawing explanation
Fig. 1 illustrates the circuit structure signal of a kind of vehicle-mounted loudspeaker broadcast sound volume adjusting apparatus of one embodiment of the invention
Figure.
Fig. 2 illustrates the flow chart of a kind of vehicle-mounted loudspeaker broadcast sound volume method of adjustment of one embodiment of the invention.
Fig. 3 illustrates the structured flowchart of the vehicle of one embodiment of the invention.
Detailed description of the invention
With reference to the accompanying drawings the present invention is described more fully, the exemplary embodiment of the present invention is wherein described.
Fig. 1 illustrates the circuit structure signal of a kind of vehicle-mounted loudspeaker broadcast sound volume adjusting apparatus of one embodiment of the invention
Figure, including: mike 101, audio-frequency power amplifier 102, speaker 103, digital signal processing circuit 104, speaker volume
Control module 105；Wherein, mike 101 is for obtaining the sound in car, and the sound in described car includes internal loudspeaker sound
User in sound, car talks sound；Described digital signal processing circuit 104 and described mike 101, audio-frequency power amplifier
102 are connected, and are used for judging in car that user's wave volume of talking the most no more than sets volume value, wherein, described setting volume
Value determines according to the volume value of described speaker；Speaker volume control module 105 is connected with digital signal processing circuit 104
Connecing, for when user talks sound no more than setting volume value, the volume value reducing speaker makes the sound according to speaker
Amount determines that described setting volume value is talked wave volume less than user；Audio-frequency power amplifier 105 makes speaker according to reduction
After volume value play.
In one embodiment, gain circuitry is used for determining described setting volume value, and wherein, the described volume value that sets is as institute
State the setting ratio value of loudspeaker sound average volume RMS1；Or, the described volume value that sets is as the average sound of described loudspeaker sound
Amount RMS1 with set decibel value and.
For example, described gain circuitry is used for determining that the described volume value that sets is as described loudspeaker sound average volume
The setting ratio value of RMS1, such as, described setting volume value is set as k times of described loudspeaker sound average volume RMS1, this k
The span of value can be 1.1 to 1.5, for example, it is possible to the value of k is set as 1.15；Or, described gain circuitry determines institute
State set volume value as described loudspeaker sound average volume RMS1 with set decibel value and；Such as, decibel value value is set
May range from 8-15 decibel such as 10 decibels so that loudspeaker sound is talked sound less than user.
The vehicle-mounted loudspeaker broadcast sound volume adjusting apparatus that the present invention provides, by digital signal processing circuit to vehicle-mounted space
In loudspeaker sound peace talk language tone signal separate, then adjust according to loudspeaker sound and conversational speech comparing result
Music playback volume, reaches the talk volume effect higher than speaker volume, is not required to Non-follow control volume and can realize raising one's voice
Device volume control thus reach musical sound and do not affect the effect of talk.
In one embodiment, user's sound of talking includes user and the talk sound of user, user and smart machine
Talk sound.
In one embodiment, described digital signal processing circuit 104 includes digital-to-analogue converter (analog to
Digital converter, ADC) 1041, average volume computing unit (root mean square, RMS) 1042, speech inspection
Survey device (Voice Activity Detection, VAD) 1043, comparator (Comparator) 1044, gain circuitry 1045, subtract
Method circuit 1046, convolution circuit 1047；Wherein, described digital-to-analogue converter includes the first digital-to-analogue converter, the second digital-to-analogue converter；
Described average volume computing unit includes the first average volume computing unit, the second average volume computing unit.
With reference to shown in Fig. 1, described mike successively with the second digital-to-analogue converter, the subtraction of described digital signal processing circuit
Circuit, voice detector, comparator are connected, described audio-frequency power amplifier and described first digital-to-analogue converter, convolution circuit,
First average volume computing unit, gain circuitry, comparator are connected.Described speaker volume control module compares with described
Device, voice detector are connected.
In one embodiment, the first digital-to-analogue converter is used for obtaining the broadcast sound volume that audio-frequency power amplifier amplifies, the
Two digital-to-analogue converters are acoustical signal in the sound obtained according to mike obtains car；Voice detector 1043 is for according to car
Interior acoustical signal judges whether that simultaneously user talks sound, loudspeaker sound；If average volume computing unit 1042 is for same
Time user talk sound, loudspeaker sound, determine loudspeaker sound average volume RMS1 by the first average volume computing unit
By second average volume computing unit user's Conversation Voice sound average volume RMS2；Comparator 1044 is used for judging user's Conversation Voice
Sound average volume RMS2 the most no more than sets volume value, and described setting volume value is according to described loudspeaker sound average volume
RMS1 determines；Speaker volume control module 105 is additionally operable to when user's Conversation Voice sound average volume RMS2 no more than sets volume
During value, reduce the volume value of speaker and make described setting volume value less than user's Conversation Voice sound average volume setting ratio
RMS2。
In one embodiment, digital signal processing circuit also includes shock response module, and shock response module is for such as
Fruit detects the sound of speaker, determines speaker transfer function H (s)=Y (s)/X (s) to mike, is obtained by discretization
To numeric field transfer function H (z), and then obtain impulse Response Function h (n).
Specifically, have employed in advance testing audio power amplifier to the transfer function H (s) of mike coupling electrical signals,
Owing to the position of internal loudspeaker and mike is substantially fixing, it is only necessary to test is once.Calculated by transferometer
Go out the actual transfer music signal to mike, then the overall signal collecting mike carries out phase reducing, thus reach to raise
The purpose that sound device sound, user voice separate.
In one embodiment, digital signal processing circuit 104 is additionally operable to: determine the loudspeaker sound and user detected
Talk sound Y (t)+M (t), is y (n)+m (n) by described second digital to analog converter acquisition sound words integrated signal；By audio frequency merit
Reference signal X (t) of rate amplifier through the first digital to analog converter ADC1 process, after discretization, obtain x (n)；By
Impulse Response Function h (n) of the X (t) through obtaining to Y (t) obtains y (n)=x (n) * h (n)；By described subtraction circuit according to
Described sound words integrated signal y (n)+m (n) and speaker are delivered to acoustical signal y (n) of mike and obtain user's talk in car
Acoustical signal m (n)；User's Conversation Voice tone signal m (n) in car is input to voice detector VAD, it may be judged whether there is user and talk
Words sound, when judge exist user talk sound time, then digital signal processing circuit perform judge user's equal sound of Conversation Voice tone level
Amount RMS2 the most no more than sets volume value.
In one embodiment, digital signal processing circuit is additionally operable to when performing the setting of described reduction volume instructions
Judge whether to there is loudspeaker sound according to acoustical signal in car after between, user talks sound simultaneously；If can't detect user
Talk sound, then perform volume and improve instruction, speaker volume returns to the volume before reducing.
In one embodiment, speaker volume control module includes enumerator, and speaker volume control module is to set
Ratio gradually reduces the volume of speaker, often reduces start-stop counter and counts once.If can't detect user to talk sound, then
Perform volume according to rolling counters forward result and improve instruction, speaker volume is returned to the volume before reducing.
In one specifically embodiment, use this vehicle-mounted loudspeaker broadcast sound volume adjusting apparatus time, can perform with
Lower step: the sound that the speaker that (1) is collected by mike sends, determines the speaker transfer function H (s) to mike
=Y (s)/X (s), obtains numeric field transfer function H (z) by discretization simultaneously, and then obtains unit impact response function h
(n)；(2) when there is talk sound, mike detects speaker music sound and talk sound Y (t)+M (t), this
Time by reference signal X (t) of audio-frequency power amplifier through digital to analog converter ADC1, obtain x (n) after discretization, then pass through
Convolution circuit is calculated y (n)=x (n) * h (n)；(3) signal that mike is collected obtains y after digital to analog converter ADC2
N ()+m (n), deducts simple speaker and is delivered to sound y (n) of mike, obtain talk sound m (n) that mike is collected；
(4) m (n) enters voice detector VAD, and VAD judges whether speech, when judging to there is speech, opens comparator
Comparator；When being not detected by speech, close comparator Comparator；(5) by calculating the sound that mike is collected
Music sound average volume RMS1, calculates Conversation Voice sound average volume RMS2 that mike receives；RMS1 signal increases 10dB and enters
Enter comparator, compare with RMS2, when comparator output result is more than zero, and DSP sends to volume playing module and reduces volume
Order, reduces the wave volume play and can feed back to mike, if now comparator Comparator output result is just, continues
Supervention send reduction audio volume command, thus forms closed loop feedback, continues to reduce volume until comparator output result is less than zero, stops
Send and reduce audio volume command.Finally ensure that Conversation Voice pitch is in music playback volume about 10dB, it is ensured that talk sound is not
It is disturbed.(6) after talk terminates, owing to voice detector VAD can't detect sound, comparator Comparator is closed, simultaneously
Notification audio broadcast sound volume control module, if carrying out volume before to reduce operation, and has carried out n times operation, and note variable is
N, now needing to carry out n times volume increases operation, and then variable resets, original broadcast sound volume before recovering to talk；(7) when not inspection
When surveying talk sound, voice detector closes comparator, and comparator does not retransmit reduction audio volume command, and notification audio is play simultaneously
Volume control module, now volume reduces performance variable is zero, does not carry out volume and increases operation.
Table 1 illustrates that overall loudness control logic can be according to lower table handling, it is judged that condition includes whether voice detector VAD opens
Opening (Y/N), wherein, whether player volume status N is zero, and the output of comparator time is more than zero or less than or equal to zero.
Music signal in vehicle-mounted space and language tone signal are separated by the present invention by digital signal processing circuit,
Then carry out contrasting music signal and language tone signal, reach talk volume according to comparing result adjustment music playback volume and be higher than
Volume of music 10dB effect, thus reach to be not required to Non-follow control volume and reach loudspeaker sound and do not affect the effect of talk.
Table 1
Fig. 2 illustrates the flow chart of a kind of vehicle-mounted loudspeaker broadcast sound volume method of adjustment of one embodiment of the invention, such as Fig. 2
Shown in, the method comprises the following steps:
Step 201, the sound in detection car obtains acoustical signal in car, the sound in described car include loudspeaker sound,
User in car talks sound.Specifically, user's sound of talking includes talk sound, user and the smart machine of user and user
Talk sound.
In one embodiment, it may be judged whether there is loudspeaker sound, user talks and includes before sound simultaneously: detection is
No there is loudspeaker sound；If be detected that the sound of speaker, determine speaker transfer function H (s)=Y to mike
S ()/X (s), obtains numeric field transfer function H (z) by discretization, and then obtains impulse Response Function h (n).
Step 202, judges whether to there is loudspeaker sound according to acoustical signal in car, user talks sound simultaneously.
In one specifically embodiment, obtain according to the loudspeaker sound detected and user sound Y (t)+M (t) of talking
Taking sound words integrated signal is y (n)+m (n)；Reference signal X (t) of audio-frequency power amplifier is obtained after process, discretization
Signal is x (n)；Impulse Response Function h (n) of the X (t) to Y (t) by having obtained, obtains y (n)=x (n) * h (n)；Root
In being delivered to acoustical signal y (n) the acquisition car of mike according to described sound words integrated signal y (n)+m (n) and speaker, user talks
Words acoustical signal m (n)；User's Conversation Voice tone signal m (n) in car is input to voice detector VAD；Judge whether user
Talk sound, when judge exist user talk sound time, perform judge whether user's Conversation Voice sound average volume RMS2 is not more than
Set the step of volume value.
, if there is loudspeaker sound, user talks sound, determines loudspeaker sound average volume simultaneously in step 203
RMS1 and user's Conversation Voice sound average volume RMS2.
Step 204, it is judged that user's Conversation Voice sound average volume RMS2 the most no more than sets volume value, described setting volume
Value determines according to described loudspeaker sound average volume RMS1.
In one embodiment, described setting volume value determines according to described loudspeaker sound average volume RMS1 and includes:
Described set the volume value setting ratio value as described loudspeaker sound average volume RMS1；Or, the described volume value that sets is as institute
State loudspeaker sound average volume RMS1 with set decibel value and.
Step 205, when user's Conversation Voice sound average volume RMS2 is not more than and sets volume value, sends to speaker and reduces
Audio volume command with reduce speaker volume, wherein, with set ratio reduce speaker volume value make described setting volume
Value is less than user's Conversation Voice sound average volume RMS2.
Step 206 so that speaker is play according to the volume value after reducing.
In one embodiment, gradually reduce the volume of speaker setting ratio, often reduce once, rolling counters forward one
Secondary；If can't detect user to talk sound, then perform volume according to rolling counters forward result and improve instruction, by speaker volume
Return to the volume before reducing.
In one embodiment, after the setting time performing described reduction volume instructions according to car in acoustical signal sentence
Disconnected there is loudspeaker sound, user talks sound the most simultaneously；If can't detect user to talk sound, then perform volume and improve
Instruction, returns to the volume before reducing by speaker volume.
It should be noted that the vehicle-mounted loudspeaker broadcast sound volume method of adjustment of the present invention and device are not limited only at car
Interior use, it is also possible to be integrated into mobile terminal or home audio, if open speaker play sound at mobile terminal, home audio
The function that amount adjusts, when mobile terminal or home audio detect talk volume higher than speaker volume, is not required to Non-follow control
Volume can realize the control on speaker volume thus reach loudspeaker sound and do not affect the effect of talk.
In one embodiment, the present invention also provides for a kind of vehicle, and this vehicle includes that vehicle-mounted loudspeaker as above is broadcast
Playback amount adjusting apparatus.Fig. 3 illustrates the structured flowchart of the vehicle of one embodiment of the invention, shown in reference Fig. 3, and described vehicle bag
Including vehicle-mounted loudspeaker broadcast sound volume adjusting apparatus, this vehicle the most also includes: control device, intelligent driving module 313, instrumental panel
310 and middle control display 311, HUD (Head Up Display, head up displays) HUD 312.Instrumental panel 310 has
Having 12.3 cun of LCD display device, this instrumental panel can use the J6CPU of TI；The operating system of instrumental panel can embed based on QNX
Formula system, instrumental panel is displayed for vehicle-state, vehicle navigation information, described car status information include speed, rotating speed,
Electricity, tire pressure, vehicle parking, gear etc..HUD HUD 312 can show GPS navigation information, navigation route information, time
Between information etc..
In one embodiment, intelligent driving module 313 may be used for processing the operation relevant to intelligent driving, such as may be used
Carrying out intelligent driving combining ADAS device, this intelligent driving can be the most unmanned driving, it is also possible to be that driver is carried out
The senior auxiliary such as the auxiliary doubling of Driving control, lane shift drives function.
Control device can be made up of multiple modules, mainly may include that mainboard 301；SATA(Serial Advanced
Technology Attachment, Serial Advanced Technology Attachment) module 302, it is connected to the storage device such as SSD303, permissible
It is used for storing data message；AM (Amplitude Modulation, amplitude modulation)/FM (Frequency Modulation, frequency modulation)
Module 304, provides wireless function for vehicle；WIFI (Wireless-Fidelity, Wireless Fidelity)/Bluetooth module
306, the service of WIFI/Bluetooth is provided for vehicle；LTE (Long Term Evolution, Long Term Evolution) communication module
307, provide the communication function with telecom operators for vehicle；Power module 308, power module 308 provides for this control device
Power supply；Switch interconnecting module 309, this Switch interconnecting module 309 can connect multiple biography as a kind of extendible interface
Sensor, if such as needing to add night vision function sensor, PM2.5 function sensor, can be by this Switch interconnecting module
309 mainboards being connected to control device, in order to the processor of control device carries out data process, and it is aobvious to transfer data to middle control
Show device.
In one embodiment, this Vehicular system can include vehicle-mounted loudspeaker broadcast sound volume adjusting apparatus, Vehicular system
Device can perform following methods: the sound in detection car obtains acoustical signal in car, and the sound in described car includes raising one's voice
User in device sound, car talks sound；Judge whether to there is loudspeaker sound according to acoustical signal in car, user talks simultaneously
Sound；If there is loudspeaker sound, user talks sound simultaneously, determine that loudspeaker sound average volume RMS1 and user talk
Sound average volume RMS2；Judge that user's Conversation Voice sound average volume RMS2 the most no more than sets volume value, described setting sound
Value determines according to described loudspeaker sound average volume RMS1；When user's Conversation Voice sound average volume RMS2 no more than sets sound
During value, send the volume reducing audio volume command to reduce speaker to speaker, wherein, to set ratio reduction speaker
Volume value makes described setting volume value less than user's Conversation Voice sound average volume RMS2；Make speaker according to the sound after reducing
Value is play.
Description of the invention is given for example with for the sake of describing, and is not exhaustively or by the present invention
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Select and retouch
Stating embodiment is in order to the principle of the present invention and actual application are more preferably described, and enables those of ordinary skill in the art to manage
Solve the present invention thus design the various embodiments with various amendments being suitable to special-purpose.
Claims (11)
1. a vehicle-mounted loudspeaker broadcast sound volume adjusting apparatus, it is characterised in that including: mike, audio-frequency power amplifier, raise
Sound device, digital signal processing circuit, speaker volume control module；
Wherein, mike is for obtaining the sound in car, and the sound in described car includes the user in internal loudspeaker sound, car
Talk sound；
Described digital signal processing circuit is connected with described mike, audio-frequency power amplifier, described Digital Signal Processing electricity
Road includes digital-to-analogue converter ADC, average volume computing unit RMS, voice detector VAD, comparator, gain circuitry, subtraction electricity
Road, convolution circuit；Described digital-to-analogue converter includes the first digital-to-analogue converter, the second digital-to-analogue converter；Described average volume calculates
Unit includes the first average volume computing unit, the second average volume computing unit；Described mike is believed with described numeral successively
Number process the second digital-to-analogue converter of circuit, subtraction circuit, voice detector, comparator are connected, described Audio power amplifier
Device is connected with described first digital-to-analogue converter, convolution circuit, the first average volume computing unit, gain circuitry, comparator；
Wherein, the first digital-to-analogue converter is for obtaining the broadcast sound volume of audio-frequency power amplifier, and the second digital-to-analogue converter is used for root
The sound obtained according to mike obtains acoustical signal in car；
Voice detector is talked sound, loudspeaker sound for judging whether to exist user according to acoustical signal in car simultaneously；
If average volume computing unit is talked sound, loudspeaker sound, by the first average volume for there is user simultaneously
Computing unit determines loudspeaker sound average volume RMS1, by second average volume computing unit user's equal sound of Conversation Voice tone level
Amount RMS2；
Comparator is used for judging that user's Conversation Voice sound average volume RMS2 the most no more than sets volume value, described setting volume value
Determine according to described loudspeaker sound average volume RMS1；
Speaker volume control module, is connected with digital signal processing circuit, for when user's Conversation Voice sound average volume
RMS2 is not more than when setting volume value, reduces the volume value of speaker and makes described setting volume value less than user setting ratio
Conversation Voice sound average volume RMS2；
Audio-frequency power amplifier makes speaker play according to the volume value after reducing.
Device the most according to claim 1, it is characterised in that also include:
Digital signal processing circuit also includes shock response module, and shock response module is for if be detected that the sound of speaker
Sound, determines speaker transfer function H (s)=Y (s)/X (s) to mike, obtains numeric field transfer function H by discretization
(z), and then obtain impulse Response Function h (n).
Device the most according to claim 2, it is characterised in that:
Digital signal processing circuit is used for: determine that the loudspeaker sound detected and user talk sound Y (t)+M (t), by institute
Stating the second digital to analog converter acquisition sound words integrated signal is y (n)+m (n)；
By reference signal X (t) of audio-frequency power amplifier through the first digital to analog converter ADC1 process, obtain after discretization
x(n)；
Y (n)=x (n) * h (n) is obtained by impulse Response Function h (n) in convolution circuit；
It is delivered to the sound of mike according to described sound words integrated signal y (n)+m (n) and speaker by described subtraction circuit
Signal y (n) obtains user's Conversation Voice tone signal m (n) in car；User's Conversation Voice tone signal m (n) in car is input to text hegemony
Device VAD, it may be judged whether there is user and talk sound, when judge to exist user talk sound time, then digital signal processing circuit is held
Row judges that user's Conversation Voice sound average volume RMS2 the most no more than sets volume value.
4. according to described device arbitrary in claim 1-3, it is characterised in that:
Digital signal processing circuit is additionally operable to: after the setting time performing described reduction volume instructions according to car in sound letter
Number judge whether to there is loudspeaker sound, user talks sound simultaneously；
If can't detect user to talk sound, then perform volume and improve instruction, before returning to speaker volume reduce
Volume.
Device the most according to claim 4, it is characterised in that
Gain circuitry is used for determining described setting volume value, and wherein, the described volume value that sets is as the average sound of described loudspeaker sound
The setting ratio value of amount RMS1；Or, the described volume value that sets is as described loudspeaker sound average volume RMS1 and setting decibel value
Sum；
And/or
User's sound of talking includes the talk sound of user and the talk sound of user, user and smart machine；
And/or
Speaker volume control module gradually reduces the volume of speaker with setting ratio, often reduces start-stop counter counting one
Secondary；
And/or
If speaker volume control module is talked sound for can't detect user, then perform sound according to rolling counters forward result
Amount improves instruction, and speaker volume returns to the volume before reducing.
6. a vehicle, it is characterised in that including: the vehicle-mounted loudspeaker broadcast sound volume as described in arbitrary in claim 1-5 is adjusted
Engagement positions.
7. a vehicle-mounted loudspeaker broadcast sound volume method of adjustment, it is characterised in that including:
Sound in detection car obtains acoustical signal in car, and the sound in described car includes that the user in loudspeaker sound, car talks
Words sound；
Judge whether to there is loudspeaker sound according to acoustical signal in car, user talks sound simultaneously；
If there is loudspeaker sound, user talks sound simultaneously, determine that loudspeaker sound average volume RMS1 and user talk
Sound average volume RMS2；
Judge that user's Conversation Voice sound average volume RMS2 the most no more than sets volume value, described setting volume value according to described in raise
Sound device sound average volume RMS1 determines；
When user's Conversation Voice sound average volume RMS2 is not more than and sets volume value, send to speaker and reduce audio volume command with fall
The volume of low speaker, wherein, with set ratio reduce speaker volume value make described setting volume value less than user talk
Words sound average volume RMS2；
Speaker is play according to the volume value after reducing.
Method the most according to claim 7, it is characterised in that judge whether to there is loudspeaker sound, user talks simultaneously
Include before sound:
Detect whether to there is loudspeaker sound；
If be detected that the sound of speaker, determine speaker transfer function H (s)=Y (s)/X (s) to mike, by from
Dispersion obtains numeric field transfer function H (z), and then obtains impulse Response Function h (n).
Method the most according to claim 7, it is characterised in that described in judge whether to there is loudspeaker sound, user simultaneously
Talk sound includes:
According to the loudspeaker sound detected and user talk sound Y (t)+M (t) acquisition sound words integrated signal be y (n)+m (n)；
After process, discretization, reference signal X (t) of audio-frequency power amplifier is obtained signal is x (n)；
Impulse Response Function h (n) of the X (t) to Y (t) by having obtained obtains y (n)=x (n) * h (n)；
Acoustical signal y (n) being delivered to mike according to described sound words integrated signal y (n)+m (n) and speaker obtains in car
User's Conversation Voice tone signal m (n)；
User's Conversation Voice tone signal m (n) in car is input to voice detector VAD, it may be judged whether there is user and talk sound, when
Judge to exist user talk sound time, perform to judge that whether user's Conversation Voice sound average volume RMS2 is not more than setting volume value
Step.
10. according to described method arbitrary in claim 7-9, it is characterised in that described when user's Conversation Voice sound average volume
When RMS2 is not more than setting volume value, sends to speaker and include after reducing the audio volume command volume with reduction speaker:
After the setting time performing described reduction volume instructions, judge whether to exist to raise one's voice according to acoustical signal in car simultaneously
Device sound, user talk sound；
If can't detect user to talk sound, then perform volume and improve instruction, before returning to speaker volume reduce
Volume.
11. methods according to claim 10, it is characterised in that
Described setting volume value determines according to described loudspeaker sound average volume RMS1 and includes: the described volume value that sets is as described
The setting ratio value of loudspeaker sound average volume RMS1；Or, the described volume value that sets is as described loudspeaker sound average volume
RMS1 with set decibel value and；
And/or
User's sound of talking includes the talk sound of user and the talk sound of user, user and smart machine；
And/or
Gradually reduce the volume of speaker with setting ratio, often reduce once, rolling counters forward once；
And/or
If can't detect user to talk sound, then perform volume according to rolling counters forward result and improve instruction, by speaker
Amount returns to the volume before reducing.
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| CN113783988B (en) * | 2021-08-26 | 2024-04-02 | 东风汽车集团股份有限公司 | Method and device for controlling volume of in-car call |
| CN114783328A (en) * | 2022-04-09 | 2022-07-22 | 上海弘遥电子研究开发有限公司 | In-vehicle self-defined switch control method and system, storage medium and intelligent terminal |
| CN114783328B (en) * | 2022-04-09 | 2024-05-03 | 上海弘遥电子研究开发有限公司 | In-vehicle custom switch control method, system, storage medium and intelligent terminal |
| CN115209305A (en) * | 2022-06-09 | 2022-10-18 | 中国联合网络通信集团有限公司 | Vehicle-mounted sound volume adjusting method, platform, computer equipment and storage medium |
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| CN115604623A (en) * | 2022-10-25 | 2023-01-13 | 苏州井利电子股份有限公司（Cn） | Intelligent vehicle-mounted sound adjusting system and method |
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