CN108944751A - A kind of vehicle audio broadcast sound volume automatic regulating system - Google Patents
A kind of vehicle audio broadcast sound volume automatic regulating system Download PDFInfo
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- CN108944751A CN108944751A CN201810807605.XA CN201810807605A CN108944751A CN 108944751 A CN108944751 A CN 108944751A CN 201810807605 A CN201810807605 A CN 201810807605A CN 108944751 A CN108944751 A CN 108944751A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/037—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for occupant comfort, e.g. for automatic adjustment of appliances according to personal settings, e.g. seats, mirrors, steering wheel
- B60R16/0373—Voice control
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Abstract
The invention discloses a kind of vehicle audio broadcast sound volume automatic regulating systems, belong to vehicle electronic device technical field, volume can only be manually adjusted by solving the problems, such as that vehicle occupant needs to link up to chat, its key points of the technical solution are that: including voice signal pickup unit, voice signal standard class database, sound equipment broadcast sound volume rating database, for adjusting the execution unit of sound equipment broadcast sound volume size, people speaks in the motor space that real-time reception voice signal pickup unit is picked up decibel and speaks the central processing unit of the change control execution unit of decibel according to people in motor space；A kind of vehicle audio broadcast sound volume automatic regulating system of the present invention, the volume which can play according to the current running environment automatic adjustment vehicle audio of automobile.
Description
Technical field
The invention belongs to vehicle electronic device technical fields, in particular to a kind of vehicle audio broadcast sound volume automatic adjustment system
System.
Background technique
Currently, vehicle audio can be all installed on general automobile, for playing music or navigation hint, but now
Vehicle audio, which is substantially, manually adjusts volume, can be always maintained at this volume after volume adjustment is good；If interior people at this time
When needing to link up chat, volume can only be manually adjusted, volume is turned up after waiting chat manually again, it is troublesome in poeration, therefore have and change
Into space.
Summary of the invention
It can be played according to the current running environment automatic adjustment vehicle audio of automobile the object of the present invention is to provide a kind of
The vehicle audio broadcast sound volume automatic regulating system of volume.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of vehicle audio broadcast sound volume automatic regulating system, comprising:
Voice signal pickup unit picks up in real time and records people in current motor space and speak decibel, and is denoted as；
Voice signal standard class database is stored with people in motor space and speaks respective standard grade voice signal decibel；Its
Middle definition, advanced sound signal decibelRange be, intermediate voice signal decibelRange be, rudimentary voice signal decibelRange be；
It is right to be stored with the respective standard grade voice signal decibel institute of speaking of people in motor space for sound equipment broadcast sound volume rating database
The sound equipment broadcast sound volume grade answered；It wherein defines, advanced sound signal decibelCorresponding sound equipment plays louder volume,
AndRange be；
Intermediate voice signal decibelVolume is in corresponding sound equipment broadcasting, andRange be；It is rudimentary
Voice signal decibelCorresponding sound equipment plays amount of bass, andRange be；
Execution unit, for adjusting the size of vehicle audio broadcast sound volume；
Central processing unit, people speaks decibel and according to automobile in the motor space that real-time reception voice signal pickup unit is picked up
People speaks the change control execution unit of decibel in space；
Voice signal pickup unit picks up people in current motor space in real time speaks and decibel and the decibel of speaking is input to center
Processor, central processing unit receive the people that is picked up of voice signal pickup unit and speak decibel and in voice signal standard class number
According to obtaining voice signal decibel ratings belonging to the decibel of speaking in library；Central processing unit obtains present sound signals decibel ratings
And inquired in sound equipment broadcast sound volume rating database with voice signal decibel ratings corresponding sound equipment broadcast sound volume grade with
Control execution unit adjusts current vehicle audio broadcast sound volume according to the sound equipment broadcast sound volume grade.
Using the above scheme, cab signal pickup unit, which picks up in real time and records people in current motor space, speaks decibel simultaneously
The decibel of speaking is input to central processing unit, under the control of central processing unit, so that current speak decibel and sound letter
Number standard class database is matched, and is broadcast according to the matched voice signal standard class of decibel institute is currently spoken according to sound equipment
Corresponding sound equipment broadcast sound volume passes through execution unit de-regulation vehicle audio in playback amount rating database.
Preferably, voice signal pickup unit includes:
Sound pickup device, picks up in real time and records people in current motor space and speak and decibel and be denoted as；
Sound computing device is built-in with sound first and calculates function:；
--- sound computing device picks up sound pickup device within certain timeRecord number, and；
--- sound pickup device is picked up in certain timeSecondaryPopulation mean；
And it willIt speaks as people in current motor space and decibel and the decibel of speaking is input to central processing unit.
Using the above scheme, function is calculated by sound firstRealize voice signal pickup unit to center
The voice signal inputted in processor is the mean value in certain time, and then avoids voice signal pickup unit to centre
The voice signal inputted in reason device is excessively high in a flash or too low sound decibel；Secondly average signal is believed compared to moment
Number, so that execution unit more gently avoids situation fluctuated during adjusting vehicle audio broadcast sound volume, improve
The auditory effect of automobile personnel.
Preferably, the sound computing device, which is also built-in with sound second, calculates function；
With the timeIt for interval, forms people in a current motor space and speaks a decibel matrix, and the matrix is denoted as；
Wherein defineIt speaks decibel for people in current motor spaceIt is pushed forward the decibel of speaking of certain time, and> 1,To work as
People speaks decibel in preceding motor spaceThe decibel of speaking of pusher section time, and>1；It calculatesMean value simultaneously
It is denoted as, and willIt speaks as people in current motor space and decibel and the decibel of speaking is input to central processing unit.
Using the above scheme, sound second calculates the setting of function, realizes voice signal pickup unit to central processing unit
Middle inputted voice signal be at this time for the previous period the mean value of voice signal namely voice signal pickup unit to centre
There are the sluggishnesses of certain time for the voice signal inputted in reason device, and then avoid execution unit false triggering, avoid vehicle-mounted sound
It rings broadcast sound volume and situation fluctuated occurs, improve the auditory effect of automobile personnel, secondly sluggish certain time takes mean value again
And current broadcast sound volume is adjusted, so that vehicle audio broadcast sound volume is adjusted more rationally, due to the variation of environment
Variation, more scientific reality.
Preferably, voice signal pickup unit further include:
Sound judgment means, it is interior to be equipped with the first discriminant function of sound；
--- people speaks a decibel matrix mean value in current motor space；
--- people speaks a decibel matrix mean value in effective motor space, whereinValue；
--- fixed value；
If when forefathers speak a decibel matrix mean valueMeet the first discriminant function of sound, then voice signal pickup unit says this
Talk about decibel matrix mean valueIt is input to central processing unit.
Using the above scheme, the setting of the first discriminant function, so that the sound that present sound signals pickup unit is picked up
After signal will meet some requirements, the voice signal that this can just be met condition by voice signal pickup unit is input to centre
Manage device so that voice signal pickup unit not only vehicle occupant's one's voice in speech is picked up in real time and meanwhile to the signal of pickup into
Row filtering.
Preferably, being additionally provided with the second discriminant function of sound inside the sound judgment means:
——The related coefficient of two matrixes；
--- it isVariance；
--- it isVariance；
——The covariance of two matrixes；
If when forefathers speak a decibel matrix mean valueMeet the first discriminant function of sound, and if when forefathers speak a decibel matrixMeet the second discriminant function of sound simultaneously, then voice signal pickup unit is by decibel matrix mean value of speakingIt is defeated
Enter to central processing unit.
Using the above scheme, the second discriminant function of sound is in the first discriminant function of sound to laggard the one of sound decibel filtering
Step judges the sound decibel in current motor space with the sound decibel value pre-set, to ensure that sound decibel accords with
Chorus sound signal pickup unit is input to the sound decibel in central processing unit.
Preferably, further include,
Speed signal pickup unit picks up in real time and records current running car speed and is denoted as；
Speed signal standard class database is stored with automobile speed respective standard grade；It wherein defines, advanced speed's
Range is, intermediate speedRange be, rudimentary speedRange be；Its
Middle definition, rudimentary speedCorresponding sound equipment plays louder volume, andRange be；Intermediate speedVolume is in corresponding sound equipment broadcasting, andRange be；Advanced speedCorresponding sound equipment is broadcast
Lower the volume for, andRange be；
When voice signal pickup unit for a period of timeThe people picked up speaks decibel when not changing, then speed signal is picked up
It takes unit to pick up current running car speed and running car speed is input to central processing unit, central processing unit receives speed
Running car speed numerical value that signal pick-up unit is picked up simultaneously obtains the garage in speed signal standard class database
Sail voice signal decibel ratings belonging to speed numerical value；Central processing obtains present sound signals decibel ratings and in the past sound letter
Number decibel ratings inquire corresponding sound equipment broadcast sound volume grade in sound equipment broadcast sound volume rating database and execute list to control
Member adjusts current sound equipment broadcast sound volume according to the sound equipment broadcast sound volume grade.
Using the above scheme, during running car, when the sound decibel in a period of time motor space does not occur
When change, the current driving condition of driver can be judged to the regulation of speed by driver indirectly, once speed changes
When, central processing unit passes through the problem of execution unit suitably adjusts vehicle audio broadcast sound volume, manually adjusts volume to avoid people.
Preferably, speed signal pickup unit includes:
Speed pick device, when voice signal pickup unit for a period of timeThe people picked up speaks decibel when not changing,
Then speed signal pick device picks up current running car speed and is denoted as；
Speed computing device is built-in with the first discriminant function of speed:
--- speed signal pick device picks up the average value of certain section of time running car speed；
--- the standard reference value of running car speed；
--- the difference of the standard reference value of the average value and running car speed of certain section of time running car speed；
When voice signal pickup unit for a period of timeThe people picked up speaks decibel when not changing, and running car vehicle
Speed meets the first discriminant function of speed, then speed signal pickup unit picks upAnd it willIt is input to central processing unit.
Using the above scheme, it calculates function by speed first to be filtered current vehicle speed, speed signal pickup unit
Screening and filtering is carried out to useful speed and is delivered to central processing unit, in order to which central processing unit regulates and controls according to useful speed
The size of vehicle audio broadcast sound volume.
Preferably, further including lamplight pointing unit, and the lamplight pointing unit is controlled by execution unit, wherein vehicle-mounted
The lamplight pointing color that sound equipment broadcast sound volume increases when reducing with vehicle audio broadcast sound volume is different.
Using the above scheme, when central processing unit passes through execution unit to adjust current speed, indicating unit is given
Visual instruction, and vehicle audio broadcast sound volume increases and light difference when reducing.
In conclusion the invention has the following advantages:
Cab signal pickup unit pick up in real time and record people in current motor space speak decibel and by this speak decibel input
To central processing unit, under the control of central processing unit, so that current speak decibel and voice signal standard class database
It is matched, and according to the matched voice signal standard class of decibel institute of currently speaking according to sound equipment broadcast sound volume rating database
In corresponding sound equipment broadcast sound volume pass through execution unit de-regulation vehicle audio.
Detailed description of the invention
Fig. 1 is the overall block flow diagram of vehicle audio broadcast sound volume automatic regulating system；
Fig. 2 is the flow diagram of voice signal pickup unit；
Fig. 3 is the flow diagram of speed signal pickup unit.
Specific embodiment
Below in conjunction with attached drawing 1-3, invention is further described in detail.
As shown in Figure 1, a kind of vehicle audio broadcast sound volume automatic regulating system disclosed in the present embodiment, including voice signal
Pickup unit, voice signal standard class database, sound equipment broadcast sound volume rating database, central processing unit, execution unit.
Voice signal pickup unit picks up in real time and records people in current motor space and speak decibel, and is denoted as.Sound
Signal standards rating database is stored with people in motor space and speaks respective standard grade voice signal decibel；Wherein define, it is high
Grade voice signal decibelRange be , intermediate voice signal decibelRange be , rudimentary voice signal decibelRange be 。
Sound equipment broadcast sound volume rating database is stored with people in motor space and speaks respective standard grade voice signal decibel
Corresponding sound equipment broadcast sound volume grade；It wherein defines, advanced sound signal decibelCorresponding sound equipment plays louder volume, andRange be ；Intermediate voice signal decibelDuring corresponding sound equipment plays
Volume is, andRange be ；Rudimentary voice signal decibelCorresponding sound equipment is broadcast
Lower the volume for, andRange be .Execution unit is played for adjusting vehicle audio
The size of volume.Central processing unit, people speaks decibel simultaneously in the motor space that real-time reception voice signal pickup unit is picked up
It is spoken the change control execution unit of decibel according to people in motor space.
Voice signal pickup unit picks up people in current motor space in real time speaks and decibel and is input to the decibel of speaking
Central processing unit, central processing unit receive the people that is picked up of voice signal pickup unit and speak decibel and in voice signal standard etc.
Voice signal decibel ratings belonging to the decibel of speaking are obtained in grade database；Central processing obtains present sound signals decibel etc.
Grade simultaneously inquires corresponding sound equipment broadcast sound volume grade with voice signal decibel ratings in sound equipment broadcast sound volume rating database
Current vehicle audio broadcast sound volume is adjusted according to the sound equipment broadcast sound volume grade with control execution unit.
As shown in Fig. 2, voice signal pickup unit includes sound pickup device, sound computing device, sound judgment means.
Sound pickup device, picks up in real time and records people in current motor space and speak and decibel and be denoted as, wherein sound pickup device
It is interior to be equipped with sound pick-up.Sound computing device is built-in with sound first and calculates function:；
--- sound computing device picks up sound pickup device within certain time (1min)Record number, and, in the present embodimentValue 6, namely averagely obtained at interval of 10 seconds sound computing devices from sound pickup device
Sound pickup device；
--- sound pickup device is picked up in certain time (1min)SecondaryPopulation mean；
And it willIt speaks as people in current motor space and decibel and the decibel of speaking is input to central processing unit,
。
As shown in Fig. 2, in order to avoid volume occur when adjusting vehicle audio broadcast sound volume fluctuated for execution unit
Situation, sound computing device are also built-in with sound second and calculate function.
With the timeIt for interval, forms people in a current motor space and speaks a decibel matrix, and the matrix is denoted as；Wherein defineIt speaks decibel for people in current motor spaceIt is pushed forward the decibel of speaking of certain time (1min),
And> 1, value 6 in the present embodiment, namely average one is obtained from sound pickup device at interval of 10 seconds sound computing devices
Secondary sound pickup device；It speaks decibel for people in current motor spaceThe decibel of speaking of pusher section time (1min),
And> 1, in the present embodimentValue 6, namely averagely obtained at interval of 10 seconds sound computing devices from sound pickup device
Take a sound pickup device；It calculatesMean value and be denoted as, and willAs in current motor space
People, which speaks, decibel and is input to central processing unit for the decibel of speaking.
As shown in Fig. 2, being additionally provided with the second discriminant function of the first discriminant function of sound and sound inside sound judgment means, make
Voice signal pickup unit is obtained not only in real time to be picked up vehicle occupant's one's voice in speech while being filtered the signal of pickup.
The first discriminant function of sound；
--- people speaks a decibel matrix mean value in current motor space；
--- people speaks a decibel matrix mean value in effective motor space, whereinValue is；
--- fixed value, whereinValue is；
If when forefathers speak a decibel matrix mean valueMeet the first discriminant function of sound, then voice signal pickup unit should
It speaks a decibel matrix mean valueIt is input to central processing unit.
The second discriminant function of sound is additionally provided with inside sound judgment means:
——The related coefficient of two matrixes；
--- it isVariance, whereinVariance be fixed value；
--- it isVariance；
——The covariance of two matrixes；
If when forefathers speak a decibel matrix mean valueMeet the first discriminant function of sound, and if when forefathers speak a decibel matrixMeet the second discriminant function of sound simultaneously, then voice signal pickup unit is by decibel matrix mean value of speakingInput
To central processing unit.
As shown in figure 3, while the car is driving, there are the sound decibels in a period of time motor space not to change
Become, but driver can change because other thing needs handle automobile speed at this time at this time, it is contemplated that vehicle audio is broadcast at this time
The volume put potentially affects driver, therefore vehicle audio broadcast sound volume automatic regulating system further includes that speed signal is picked up
Unit, speed signal standard class database.
Speed signal pickup unit picks up in real time and records current running car speed and is denoted as.Speed signal standard
Rating database is stored with automobile speed respective standard grade；It wherein defines, advanced speedRange be , intermediate speedRange be ,
Rudimentary speedRange be ；It wherein defines, rudimentary speedIt is corresponding
Sound equipment play louder volume be, andRange be；Intermediate speedVolume in corresponding sound equipment broadcasting
For, andRange be；Advanced speedCorresponding sound equipment plays amount of bass, andModel
Enclose for。
When voice signal pickup unit for a period of timeThe people that (3min) is picked up speaks decibel when not changing, then vehicle
Fast signal pick-up unit picks up current running car speed and running car speed is input to central processing unit, central processing unit
It receives the running car speed numerical value that speed signal pickup unit is picked up and is obtained in speed signal standard class database
Voice signal decibel ratings belonging to the running car speed numerical value；Central processing obtain present sound signals decibel ratings and with
Preceding voice signal decibel ratings inquire corresponding sound equipment broadcast sound volume grade in sound equipment broadcast sound volume rating database to control
Execution unit processed adjusts current sound equipment broadcast sound volume according to the sound equipment broadcast sound volume grade.
As shown in figure 3, speed signal pickup unit includes speed pick device, speed computing device.Speed pick device,
When voice signal pickup unit for a period of timeThe people that (3min) is picked up speaks decibel when not changing, then speed signal
Pick device picks up current running car speed and is denoted as.Speed computing device is built-in with the first discriminant function of speed:
--- speed signal pick device picks up the average value of certain section of time running car speed；
--- the standard reference value of running car speed, whereinValue is；
--- the difference of the standard reference value of the average value and running car speed of certain section of time running car speed,
InValue；
When voice signal pickup unit for a period of timeThe people that (3min) is picked up speaks decibel when not changing, and automobile
Speed of operation meets the first discriminant function of speed, then speed signal pickup unit picks upAnd it willIt is input to central processing unit.
As shown in Figure 1, vehicle audio broadcast sound volume automatic regulating system further includes lamplight pointing unit, and lamplight pointing list
Member is controlled by execution unit, and wherein vehicle audio broadcast sound volume increases lamplight pointing face when reducing with vehicle audio broadcast sound volume
Color is different.Wherein lamplight pointing unit is dual-colored LED lamp, and when vehicle audio broadcast sound volume increases, dual-colored LED lamp issues red
Light, when vehicle audio broadcast sound volume reduces, dual-colored LED lamp issues green.
Voice signal pickup unit picks up the sound decibel in motor space in real time and calculates function, sound by sound first
The calculating of sound second function, the first discriminant function of sound, the second discriminant function of sound are calculated and are filtered and will be qualified
Sound decibel is input to central processing unit, and central processing unit adjusts the size of vehicle audio broadcast sound volume by execution unit；If
Voice signal pickup unit is for a period of timeThe people that (3min) is picked up speaks decibel when not changing, and running car vehicle
Speed meets the first discriminant function of speed, then speed signal pickup unit picks upAnd it willIt is input to central processing unit, centre
Manage the size that device adjusts vehicle audio broadcast sound volume by execution unit.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (8)
1. a kind of vehicle audio broadcast sound volume automatic regulating system, characterized in that include:
Voice signal pickup unit picks up in real time and records people in current motor space and speak decibel, and is denoted as；
Voice signal standard class database is stored with people in motor space and speaks respective standard grade voice signal decibel；Its
Middle definition, advanced sound signal decibelRange be, intermediate voice signal decibelRange be, rudimentary voice signal decibelRange be；
It is right to be stored with the respective standard grade voice signal decibel institute of speaking of people in motor space for sound equipment broadcast sound volume rating database
The sound equipment broadcast sound volume grade answered；It wherein defines, advanced sound signal decibelCorresponding sound equipment plays louder volume,
AndRange be；
Intermediate voice signal decibelVolume is in corresponding sound equipment broadcasting, andRange be；It is rudimentary
Voice signal decibelCorresponding sound equipment plays amount of bass, andRange be；
Execution unit, for adjusting the size of vehicle audio broadcast sound volume；
Central processing unit, people speaks decibel and according to automobile in the motor space that real-time reception voice signal pickup unit is picked up
People speaks the change control execution unit of decibel in space；
Voice signal pickup unit picks up people in current motor space in real time speaks and decibel and the decibel of speaking is input to center
Processor, central processing unit receive the people that is picked up of voice signal pickup unit and speak decibel and in voice signal standard class number
According to obtaining voice signal decibel ratings belonging to the decibel of speaking in library；Central processing unit obtains present sound signals decibel ratings
And inquired in sound equipment broadcast sound volume rating database with voice signal decibel ratings corresponding sound equipment broadcast sound volume grade with
Control execution unit adjusts current vehicle audio broadcast sound volume according to the sound equipment broadcast sound volume grade.
2. a kind of vehicle audio broadcast sound volume automatic regulating system according to claim 1, it is characterized in that: voice signal picks up
The unit is taken to include:
Sound pickup device, picks up in real time and records people in current motor space and speak and decibel and be denoted as；
Sound computing device is built-in with sound first and calculates function:；
--- sound computing device picks up sound pickup device within certain timeRecord number, and；
--- sound pickup device is picked up in certain timeSecondaryPopulation mean；
And it willIt speaks as people in current motor space and decibel and the decibel of speaking is input to central processing unit.
3. a kind of vehicle audio broadcast sound volume automatic regulating system according to claim 1, it is characterized in that: the sound meter
It calculates device and is also built-in with the calculating function of sound second；
With the timeIt for interval, forms people in a current motor space and speaks a decibel matrix, and the matrix is denoted as；
Wherein defineIt speaks decibel for people in current motor spaceIt is pushed forward the decibel of speaking of certain time, and> 1,To work as
People speaks decibel in preceding motor spaceThe decibel of speaking of pusher section time, and>1；It calculatesMean value simultaneously
It is denoted as, and willIt speaks as people in current motor space and decibel and the decibel of speaking is input to central processing unit.
4. a kind of vehicle audio broadcast sound volume automatic regulating system according to claim 3, it is characterized in that: voice signal picks up
Take unit further include:
Sound judgment means, it is interior to be equipped with the first discriminant function of sound；
--- people speaks a decibel matrix mean value in current motor space；
--- people speaks a decibel matrix mean value in effective motor space；
--- fixed value；
If when forefathers speak a decibel matrix mean valueMeet the first discriminant function of sound, then voice signal pickup unit says this
Talk about decibel matrix mean valueIt is input to central processing unit.
5. a kind of vehicle audio broadcast sound volume automatic regulating system according to claim 4, it is characterized in that: the sound is sentenced
The second discriminant function of sound is additionally provided with inside disconnected device:
——The related coefficient of two matrixes；
--- it isVariance；
--- it isVariance；
——The covariance of two matrixes；
If when forefathers speak a decibel matrix mean valueMeet the first discriminant function of sound, and if when forefathers speak a decibel matrixMeet the second discriminant function of sound simultaneously, then voice signal pickup unit is by decibel matrix mean value of speakingInput
To central processing unit.
6. a kind of vehicle audio broadcast sound volume automatic regulating system according to claim 1, it is characterized in that: further include:
Speed signal pickup unit picks up in real time and records current running car speed and is denoted as；
Speed signal standard class database is stored with automobile speed respective standard grade；It wherein defines, advanced speedModel
Enclose for, intermediate speedRange be, rudimentary speedRange be；It is wherein fixed
Justice, rudimentary speedCorresponding sound equipment plays louder volume, andRange be；Intermediate speedIt is corresponding
Sound equipment play in volume be, andRange be；Advanced speedCorresponding sound equipment plays amount of bass
For, andRange be；
When voice signal pickup unit for a period of timeThe people picked up speaks decibel when not changing, then speed signal is picked up
Unit picks up current running car speed and running car speed is input to central processing unit, and central processing unit receives speed letter
Running car speed numerical value that number pickup unit is picked up simultaneously obtains the running car in speed signal standard class database
Voice signal decibel ratings belonging to speed numerical value；Central processing obtains present sound signals decibel ratings and in the past voice signal
Decibel ratings inquire corresponding sound equipment broadcast sound volume grade in sound equipment broadcast sound volume rating database with control execution unit
Current sound equipment broadcast sound volume is adjusted according to the sound equipment broadcast sound volume grade.
7. a kind of vehicle audio broadcast sound volume automatic regulating system according to claim 6, it is characterized in that: speed signal is picked up
The unit is taken to include:
Speed pick device, when voice signal pickup unit for a period of timeThe people picked up speaks decibel when not changing,
Then speed signal pick device picks up current running car speed and is denoted as；
Speed computing device is built-in with the judgement of speed first and calculates function:
--- speed signal pick device picks up the average value of certain section of time running car speed；
--- the standard reference value of running car speed；
--- the difference of the standard reference value of the average value and running car speed of certain section of time running car speed；
When voice signal pickup unit for a period of timeThe people picked up speaks decibel when not changing, and running car speed
Meet the first discriminant function of speed, then speed signal pickup unit picks upAnd it willIt is input to central processing unit.
8. a kind of vehicle audio broadcast sound volume automatic regulating system according to claim 1, it is characterized in that: further including light
Indicating unit, and the lamplight pointing unit is controlled by execution unit, wherein vehicle audio broadcast sound volume increases and vehicle audio
Lamplight pointing color when broadcast sound volume is reduced is different.
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| CN112073569A (en) * | 2019-06-11 | 2020-12-11 | 奇酷互联网络科技（深圳）有限公司 | Navigation volume adjusting method, terminal and device with storage function |
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| CN108944751B (en) | 2020-12-15 |
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