CN106448667A - Device and method for automobile voice control and automobile - Google Patents
Device and method for automobile voice control and automobile Download PDFInfo
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- CN106448667A CN106448667A CN201610726920.0A CN201610726920A CN106448667A CN 106448667 A CN106448667 A CN 106448667A CN 201610726920 A CN201610726920 A CN 201610726920A CN 106448667 A CN106448667 A CN 106448667A
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
- G10L2015/223—Execution procedure of a spoken command
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L2021/02082—Noise filtering the noise being echo, reverberation of the speech
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Abstract
The invention discloses a device and a method for automobile voice control and an automobile and belongs to the automobile field. The device comprises an acquisition noise reduction module used for acquiring a simulation audio signal in the automobile, carrying out analog-to-digital conversion of the signal and noise reduction processing to acquire a digital audio signal and sending the digital audio signal to a signal conversion module, the signal conversion module used for receiving the digital audio signal sent by the acquisition noise reduction module, converting the signal into an automobile audio bus signal and sending the automobile audio bus signal through an automobile audio bus interface to an identification control module, and the identification control module used for identifying the automobile audio bus signal sent by the signal conversion module and performing corresponding control operation according to the identification result. The device is advantaged in that high fidelity of the audio signal and audio transmission timeliness are guaranteed, vehicle wiring complexity is reduced, and weight of a transmission cable bunch is further reduced.
Description
Technical field
The present invention relates to automotive field is and in particular to a kind of phonetic controller for automobile, method and automobile.
Background technology
With social development, automobile has become as one of people's life important walking-replacing tool.With automobile work
The development further of industry, the operation to systems such as onboard navigation system and vehicle entertainment system for the driver for convenience, voice is known
Other technology is applied in increasing automobile.
At present, on existing automobile, vehicle-mounted voice identifying system is only in the simulation Mike that position of driver setting is fixing
Wind, audio signal adopts analog signal output, and in terms of wiring, uses conventional analog audio holding wire.Realizing this
During invention, inventor finds prior art, and at least there are the following problems：Directive property simulation microphone can only carry out audio frequency
Amplifying of signal gathers it is impossible to carry out the noise reduction process of vehicle environment；And audio analog signals output be easy to disturbed, no
Method ensures the signal quality of output audio frequency；Meanwhile, because the transmission of audio analog signals uses traditional audio signal wire,
Its wire laying mode is extremely complex, and increased wire harness weight and cost.
Content of the invention
In view of the above problems it is proposed that the present invention so as to provide one kind overcome the problems referred to above or at least in part solve on
State a kind of phonetic controller for automobile, method and the automobile of problem.
According to one aspect of the present invention, there is provided a kind of phonetic controller for automobile, including：Collection noise reduction mould
Block, for gathering the simulated audio signal of in-car, carries out analog-to-digital conversion to simulated audio signal and noise reduction process obtains numeral
Audio signal, digital audio and video signals are sent to signal conversion module；Signal conversion module, sends out for receiving collection noise reduction module
The digital audio and video signals sending, digital audio and video signals are converted to car audio bus signals, and pass through car audio EBI
Car audio bus signals are sent to identification control module；Identification control module, for the vapour that signal conversion module is sent
Car audio-frequency bus signal is identified, and executes corresponding control operation according to recognition result.
Optionally, collection noise reduction module further includes：Microphone array submodule, for gathering the analogue audio frequency of in-car
Signal；And, noise reduction process submodule, the simulated audio signal for collecting to microphone array submodule carries out modulus and turns
Change and noise reduction process obtains digital audio and video signals, digital audio and video signals are sent to signal conversion module.
Optionally, noise reduction process submodule is specifically for being carried out at noise reduction by echo cancellation technology and Beamforming technology
Reason.
Optionally, the quantity of collection noise reduction module is multiple, and multiple collection noise reduction module passes through signal modulus of conversion respectively
Block is connected with identification control module.
Optionally, identification control module specifically for executing the control behaviour of following at least one types according to recognition result
Make：Audio video searching operation, information inquiry operation, vehicle control system and voice call operation.
According to another aspect of the present invention, there is provided a kind of automobile, including the above-mentioned phonetic controller for automobile.
According to another aspect of the present invention, there is provided a kind of sound control method for automobile, including：Collection in-car
Simulated audio signal, carries out analog-to-digital conversion to simulated audio signal and noise reduction process obtains digital audio and video signals；By digital sound
Frequency signal is converted to car audio bus signals；Car audio bus signals are identified, corresponding according to recognition result execution
Control operation.
Optionally, in-car simulated audio signal is acquired by microphone array.
Optionally, simulated audio signal is carried out with analog-to-digital conversion and noise reduction process obtains the step bag of digital audio and video signals
Include and noise reduction process is carried out by echo cancellation technology and Beamforming technology.
Optionally, control operation specifically includes the control operation of following at least one types：Audio video searching operation, information
Inquiry operation, vehicle control system and voice call operation.
In a kind of phonetic controller for automobile provided in an embodiment of the present invention, method and automobile, collection is in-car
Simulated audio signal, carries out analog-to-digital conversion to simulated audio signal and noise reduction process obtains digital audio and video signals；By digital sound
Frequency signal is converted to car audio bus signals；Car audio bus signals are identified, corresponding according to recognition result execution
Control operation.As can be seen here, the embodiment of the present invention can gather the phonetic order that occupant sends, and analogue audio frequency is believed
After number being converted into car audio bus signals, by car audio bus transfer, the high guarantor of audio signal can greatly be ensured
True degree and the real-time of audio transmission, reduce vehicle-mounted wiring complexity, significantly mitigate the weight of transmission cable wire harness simultaneously, and then
Improve automobile fuel efficiency or battery life.
Foregoing invention embodiment is only the general introduction of technical solution of the present invention, in order to better understand the technology of the present invention
Means, and being practiced according to the content of specification, and in order to allow the above and other objects, features and advantages of the present invention
Can become apparent, below especially exemplified by the specific embodiment of the present invention.
Brief description
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit are common for this area
Technical staff will be clear from understanding.Accompanying drawing is only used for illustrating the purpose of preferred embodiment, and is not considered as to the present invention
Restriction.And in whole accompanying drawing, it is denoted by the same reference numerals identical part.In the accompanying drawings：
Fig. 1 shows a kind of structure chart of phonetic controller for automobile provided in an embodiment of the present invention；
Fig. 2 shows a kind of structure chart of phonetic controller for automobile that another embodiment of the present invention provides；
Fig. 3 shows the structure chart of the automobile that another embodiment of the present invention provides；
Fig. 4 shows the structure chart of the automobile that another embodiment of the present invention provides；
The flow chart that Fig. 5 shows a kind of sound control method for automobile that another embodiment of the present invention provides；
The flow chart that Fig. 6 shows a kind of sound control method for automobile that another embodiment of the present invention provides.
Specific embodiment
It is more fully described the exemplary embodiment of the disclosure below with reference to accompanying drawings.Although showing the disclosure in accompanying drawing
Exemplary embodiment it being understood, however, that may be realized in various forms the disclosure and should not be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to be able to be best understood from the disclosure, and can be by the scope of the present disclosure
Complete conveys to those skilled in the art.
Embodiments provide a kind of phonetic controller for automobile, method and automobile, at least can solve the problem that
Audio signal quality cannot be ensured, vehicle-mounted wiring is complicated, wire harness weight is big, the technical problem of high cost in prior art.
Fig. 1 shows the structure chart of the phonetic controller for automobile that one embodiment of the invention provides, as Fig. 1 institute
Show, this device includes：Collection noise reduction module 11, signal conversion module 12 and identification control module 13.
The concrete structure of all parts and operation principle in embodiment Fig. 1 shown in is described in detail below：
Collection noise reduction module 11, for gathering the simulated audio signal of in-car, carries out analog-to-digital conversion to simulated audio signal
And noise reduction process obtains digital audio and video signals, digital audio and video signals are sent to signal conversion module 12.When implementing, sound
The acquisition range of frequency signal is not limited to position of driver, can also include other passenger positions, so in addition to driver
Other passengers also can send instruction to this phonetic controller, further facilitate passenger operation.Because digital audio and video signals are more
Easily by software and hardware, it is carried out with noise reduction etc. to process, therefore must carry out analog-to-digital conversion to the simulated audio signal collecting.This
Skilled person flexibly can carry out noise reduction process by multiple noise reduction technologies, and for example, echo cancellation technology and/or wave beam become
Type technology etc. all can be applicable in the embodiment of the present invention.
Signal conversion module 12, for receiving the digital audio and video signals that collection noise reduction module 11 sends, DAB is believed
Number be converted to car audio bus signals, and car audio bus signals are sent to by identification control by car audio EBI
Molding block 13.
Wherein, car audio bus is the digital audio bus for vehicular applications release for the ADI company of the U.S., English name
Referred to as Automotive Audio Bus, is abbreviated as A2B it is only necessary to just can be with transmitted in both directions 32 using a branch of unshielded twisted pair
The voice data of individual passage, can also realize remote I 2C and control and carry out fault diagnosis to multinode, be also equipped with to each node
There is provided maximum 50mA about Phantom Power ability.A2B is maximum to support 9 nodes (1 host node and 8 from nodes), adopts
Connected with daisy chain form, the cable supported 10-meter line cable, whole piece link is supported maximum 40 meters of distances maximum between node, and
Delivery of audio data between first node and the 9th node postpones maximum only 50 μ s'.Characteristic based on A2B it is only necessary to
Want 1 bundle unshielded twisted pair just can couple together 8 audio nodes, ensure delivery of audio data real-time between node
Under the premise of, greatly reduce complexity and the tare of whole-vehicle wiring, so that car load is tested more easily by EMC/EMI.
Simultaneously as A2B also enables remote I 2C controlling, therefore on each audio node, MCU and CAN etc. can be saved and control
Interface.In the case of using Phantom Power, part of nodes is also without using power supply chip.Thus doing for each audio node
Weight reducing process, reduces system cost.
Identification control module 13, the car audio bus signals for sending to signal conversion module 12 are identified, root
Execute corresponding control operation according to recognition result.Wherein, control operation can include audio video searching operation, information inquiry behaviour
The operations such as work, vehicle control system and voice call operation.
As can be seen here, the mode in the embodiment of the present invention can gather the language that the personnel of in-car any position send effectively
Sound instruct, and reduce vehicle-mounted wiring complexity, reduce car audio system BOM cost it is ensured that the high fidelity of audio signal and
The real-time of audio transmission, significantly mitigates the weight of transmission cable wire harness simultaneously, and then improves automobile fuel efficiency or battery longevity
Life.
Fig. 2 shows a kind of structure of phonetic controller for automobile that another specific embodiment of the present invention provides
Figure.As shown in Fig. 2 this device includes：Collection noise reduction module 21, signal conversion module 22 and identification control module 23.Wherein, adopt
Collection noise reduction module 21 further includes microphone array submodule 211 and noise reduction process submodule 212.
The concrete structure of all parts and operation principle in embodiment Fig. 2 shown in is described in detail below：
In the present embodiment, collection noise reduction module 21 is used for gathering the simulated audio signal of in-car, to simulated audio signal
Carry out analog-to-digital conversion and noise reduction process obtains digital audio and video signals, digital audio and video signals are sent to signal conversion module 22.
Wherein, microphone array submodule 211 is the wheat by arranging multiple microphones compositions of diverse location in the car
Gram wind array, the in-car simulated audio signal of Real-time Collection in all directions.For example, it is possible in position of driver and each passenger position
Put and be respectively provided with corresponding microphone, in order to gather the audio signal of corresponding position respectively；Can also in the car front side, after
The different azimuth such as side, left side or right side are respectively provided with multiple microphones, in order to gather in-car all of audio frequency letter in all directions
Number.Because being not pointed towards property of microphone array, the position of its collection audio signal is a region, therefore, by rational deployment
Microphone, can form an audio signal reception region covering in-car all positions as far as possible, so either driver
The phonetic order that the phonetic order sending or other passengers send all can effectively be gathered by microphone array submodule 211 and pass
Give noise reduction process submodule 212.
In addition, the triggering mode that the above-mentioned microphone array submodule 211 of triggering starts to gather audio signal can be flexible
Realized by various ways：In the first implementation, can be in the whole time period after automobile starting until before flame-out
The in-car audio signal of Real-time Collection, which is particularly suited for microphone array and is respectively provided with front side, rear side, left side in the car
Or at the different azimuth such as right side, in order to gather in all directions in the application scenarios of in-car all of audio signal.In second
In implementation, control button can be set, when holding control button is in and is pressed state, start to gather in-car audio frequency
Signal, during unclamp control button, stops the in-car audio signal of collection, which is particularly suited for microphone array and is respectively provided with
In position of driver and individual passengers position, at this point it is possible to be respectively provided with single control button for each microphone, so that
The passenger of corresponding position can control corresponding microphone by this control button so that the collection of audio signal has more pin
To property.In addition, in other implementations, dedicated button can also be arranged, after pressing this dedicated button, in Preset Time
The in-car audio signal of (in 30s) collection, at the end of Preset Time, stops collection, need to press this again special during collection next time
Use button.Above-mentioned control button and dedicated button can flexibly be realized by various forms, for example, it is possible to press for push type
Button and/or tumbler switch etc..In addition, above-mentioned several implementations both can be used alone it is also possible to be used in combination, this
Bright this is not limited.
The simulated audio signal that noise reduction process submodule 212 is used for microphone array submodule 211 is collected is converted into
Digital audio and video signals simultaneously carry out noise reduction process, finally this digital audio and video signals are sent to signal conversion module 22.Because digital
Audio signal carries out noise reduction etc. more easily by software and hardware and processes to it, therefore must carry out mould to the simulated audio signal collecting
Number conversion.Wherein, noise reduction process submodule 212 mainly carries out noise reduction process by echo cancellation technology and Beamforming technology.
Echo cancellation technology refers to adopt echo canceling method, that is, by the size of adaptive approach estimate echo signal, then
Deduct this estimate to offset the noise reduction technology of echo in receipt signal.Beamforming technology is by multiple audio receivers
Produce the wave beam of a directive property, signal is concentrated on needs the direction of collection, thus reducing the fall gathering other direction noises
Make an uproar mode.In being embodied as, noise-reduction method is not limited to above two method.
Optionally, the quantity of collection noise reduction module 21 can be multiple, and multiple collection noise reduction module 21 passes through letter respectively
Number modular converter 22 is connected with identification control module 23.Specifically, the annexation between this three can have following several
The situation of kind：In the first case, the quantity of signal conversion module 22 is also multiple, and the quantity of signal conversion module 22 is equal to
The quantity of collection noise reduction module 21, now, collection noise reduction module 21 only one signal conversion module 22 of corresponding connection, then
All of signal conversion module 22 is connected in same identification control module 23.In second situation, signal conversion module
22 quantity is also multiple, and the quantity of signal conversion module 22 is less than the quantity of collection noise reduction module 21, at this point it is possible in advance
The factors such as the position in conjunction with collection noise reduction module 21 arrangement are grouped to all of collection noise reduction module 21, same group of collection
Noise reduction module 21 is connected in same signal conversion module 22, and then all of signal conversion module 22 is connected to same knowledge
In other control module 23.In the third situation, the quantity of signal conversion module 22 is only one, now, all of collection fall
Module of making an uproar 21 is all connected in same signal conversion module 22, then this signal conversion module 22 and an identification control module
23 are connected.Those skilled in the art can flexibly choose the either type in above-mentioned several ways according to actual needs.In addition,
Those skilled in the art can also carry out various improvement and deform to the modules in the embodiment of the present invention, for example, it is also possible to
Signal conversion module 22 is integrated in collection noise reduction module 21, which is particularly suited in the first above-mentioned situation, and
As signal conversion module 22 being integrated in identification control module 23, which is particularly suited for above-mentioned the third
In situation.
Signal conversion module 22 is mainly used in receiving the digital audio and video signals that collection noise reduction module 21 sends, and this is counted
Word audio signal is converted into car audio bus signals, and is sent car audio bus signals by car audio EBI
To identification control module 23.Wherein, the technical characterstic according to car audio bus, car audio bus signals are by unmasked
Double-strand transmission, and transmission line can be to be attached using daisy chain form.
Identification control module 23 is mainly used in identifying the car audio bus signals that signal conversion module 22 sends, and according to
The result of identification executes corresponding control operation.Wherein, identification control module 23 is to collection and treated audio signal
Give the module of concrete application, in the present embodiment specifically, can be intelligent vehicle-carried entertainment systems or vehicle-mounted lead
Boat system, the concrete operations of its execution can be audio video searching operation, information inquiry operation, vehicle control system and voice
Telephone operation etc..
As can be seen here, the mode in the embodiment of the present invention adopts microphone array to gather audio signal, can effectively adopt
Collect the phonetic order that the personnel of in-car any position send, believed by the audio frequency that car audio bus signal transmission is collected
Number, better assure that the high fidelity of audio signal and the real-time of audio transmission, and, one group of car audio bus can
Carry multi pass acquisition noise reduction module 21 simultaneously, significantly reduces vehicle-mounted wiring complexity, reduces car audio system BOM
This, significantly mitigate the weight of transmission cable wire harness simultaneously, and then improves automobile fuel efficiency or battery life.
In addition, the implementation in the present invention, due to having carried out voice de-noising process, is therefore particularly suitable for in-car noisy
Environment in, and, the embodiment of the present invention can be flexibly applied in multiple intelligent use, for example, onboard navigation system, vehicle-mounted
Entertainment systems etc..
Fig. 3 shows the structure chart of the automobile 300 that another embodiment of the present invention provides.As shown in figure 3, this automobile 300 wraps
Include the phonetic controller shown in above-mentioned Fig. 1, specifically include：Collection noise reduction module 11, signal conversion module 12 and identification control
Module 13.
Fig. 4 shows the structure chart of the automobile 400 that another embodiment of the present invention provides.As described in Figure 4, this automobile 400 wraps
Include the phonetic controller shown in above-mentioned Fig. 2, specifically include：Collection noise reduction module 21, signal conversion module 22 and identification control
Module 23, wherein collection noise reduction module 21 further includes microphone array submodule 211 and noise reduction process module 212.
The flow chart that Fig. 5 shows a kind of sound control method for automobile that another embodiment of the present invention provides.As
Shown in Fig. 5, the method comprises the following steps：
Step S501：The in-car simulated audio signal of collection, is carried out at analog-to-digital conversion and noise reduction to simulated audio signal
Reason obtains digital audio and video signals.
When implementing, the acquisition range of audio signal is not limited to position of driver, can also include other passengers and be located
Position, other passengers so in addition to driver also can send phonetic control command, further facilitates passenger operation.Because number
Word audio signal carries out noise reduction etc. more easily by software and hardware and processes to it, therefore the simulated audio signal that collect must be carried out
Analog-to-digital conversion.Wherein, those skilled in the art flexibly can carry out noise reduction process by multiple noise reduction technologies, and for example, echo disappears
Except technology and/or Beamforming technology etc. all can be applicable in the embodiment of the present invention.
Step S502：Digital audio and video signals are converted to car audio bus signals.
Wherein, car audio bus is the digital audio bus for vehicular applications release for the ADI company of the U.S., English name
Referred to as Automotive Audio Bus, is abbreviated as A2B it is only necessary to just can be with transmitted in both directions 32 using a branch of unshielded twisted pair
The voice data of individual passage, can also realize remote I 2C and control and carry out fault diagnosis to multinode moreover it is possible to carry to each node
For maximum 50mA about Phantom Power ability.A2B is maximum to support 9 nodes (1 host node and 8 from nodes), adopts
Daisy chain form connects, the cable supported 10-meter line cable, whole piece link is supported maximum 40 meters of distances maximum between node, and the
Delivery of audio data between one node and the 9th node postpones maximum only 50 μ s'.Characteristic based on A2B it is only necessary to
8 audio nodes just can be coupled together, before ensureing delivery of audio data real-time between node by 1 bundle unshielded twisted pair
Put, greatly reduce complexity and the tare of whole-vehicle wiring, so that car load is tested more easily by EMC/EMI.With
When, control because A2B also enables remote I 2C, therefore on each audio node, the control such as MCU and CAN can be saved and connect
Mouthful.In the case of using Phantom Power, part of nodes is also without using power supply chip.Thus doing for each audio node
Weight reducing is processed, and reduces system cost.
Car audio bus carries out audio signal transmission by special car audio bus signals.With analog signal phase
Than, car audio bus signals strong antijamming capability, there is high fidelity and more preferable real-time.
Step S503：Car audio bus signals are identified, corresponding control operation is executed according to recognition result.Its
In, control operation can include audio video searching operation, information inquiry operation, vehicle control system and voice call operation
Deng operation.
As can be seen here, the mode in the embodiment of the present invention can gather the language that the personnel of in-car any position send effectively
Sound instruct, and reduce vehicle-mounted wiring complexity, reduce car audio system BOM cost it is ensured that the high fidelity of audio signal and
The real-time of audio transmission, significantly mitigates the weight of transmission cable wire harness simultaneously, and then improves automobile fuel efficiency or battery longevity
Life.
The flow chart that Fig. 6 shows a kind of sound control method for automobile that another embodiment of the present invention provides.As
Shown in Fig. 6, the method comprises the following steps：
Step S601：By the in-car simulated audio signal of microphone array collection.
Wherein, microphone array is the multiple microphones compositions by arranging diverse location in the car, can be comprehensive
The in-car simulated audio signal of ground Real-time Collection.For example, it is possible to be respectively provided with correspondence in position of driver and each passenger position
Microphone, in order to gather the audio signal of corresponding position respectively；Can also front side, rear side, left side or right side in the car
It is respectively provided with multiple microphones etc. different azimuth, in order to gather in-car all of audio signal in all directions.Because microphone
Being not pointed towards property of array, the position of its collection audio signal is a region, therefore, by rational deployment microphone, can be with shape
Become an audio signal reception region covering in-car all positions as far as possible, so the phonetic order that either driver sends
Or the phonetic order that other passengers send all effectively can be gathered by microphone array.
In addition, the triggering mode that the above-mentioned microphone array of triggering starts to gather audio signal can be flexibly by multiple shapes
Formula is realized：In the first implementation, can Real-time Collection car in the whole time period after automobile starting until before flame-out
Interior audio signal, which is particularly suited for microphone array and is respectively provided with the car that front side, rear side, left side or right side etc. be not no
At orientation, in order to gather in all directions in the application scenarios of in-car all of audio signal.In second implementation,
Control button can be set, when holding control button is in and is pressed state, start to gather in-car audio signal, unclamp control
During button processed, stop the in-car audio signal of collection, which is particularly suited for microphone array and is separately positioned on driver position
When putting with individual passengers position, at this point it is possible to be respectively provided with single control button for each microphone, so that corresponding position
Passenger corresponding microphone can be controlled by this control button so that the collection of audio signal more targetedly.In addition,
In other implementations, dedicated button can also be set, after pressing this dedicated button, at Preset Time (in 30s)
The in-car audio signal of collection, at the end of Preset Time, stops collection, need to press this dedicated button again during collection next time.On
The control button stated and dedicated button can flexibly be realized by various forms, for example, it is possible to for push type button and/or dial
Moving type switch etc..In addition, above-mentioned several implementations both can be used alone it is also possible to be used in combination, the present invention is to this not
Limit.
Step S602：The simulated audio signal collecting is carried out with analog-to-digital conversion and is become with wave beam by echo cancellation technology
Type technology carries out noise reduction process and obtains digital audio and video signals.
Because digital audio and video signals carry out noise reduction etc. more easily by software and hardware to it processing, therefore must be to the mould collecting
Intend audio signal and carry out analog-to-digital conversion.Wherein, echo cancellation technology refers to adopt echo canceling method, that is, passes through self adaptation
The size of method estimate echo signal, then deducts this estimate to offset the noise reduction technology of echo in receipt signal.Wave beam
Forming technique is the wave beam producing a directive property by multiple audio receivers, and signal is concentrated on needs the direction of collection,
Thus reducing the noise reduction mode gathering other direction noises.In being embodied as, noise-reduction method is not limited to above two method.
Step S603：Digital audio and video signals are converted to car audio bus signals.
Wherein, the technical characterstic according to car audio bus, car audio bus signals are to be passed by unshielded twisted pair
Defeated, and transmission line can be to be attached using daisy chain form.
Step S604：Car audio bus signals are identified, according to recognition result execute corresponding audio video searching,
Information inquiry, wagon control and voice call etc. operate.
Wherein, to the system gathering and treated audio signal is applied, in the present embodiment specifically, can
To be intelligent vehicle-carried entertainment systems or onboard navigation system.Wherein, compared with the vehicular platform of orthodox car, intelligence
Vehicle entertainment system is to achieve networking, intelligentized multimedia terminal, possesses and obtains multimedia content from internet
And the function of being represented by vehicle-mounted giant-screen, this system can realize web search, audio/video on-demand, information inquiry and video and lead to
The various the Internet, applications services such as words.
As can be seen here, the mode in the embodiment of the present invention adopts microphone array to gather audio signal, can effectively adopt
Collect the phonetic order that the personnel of in-car any position send, believed by the audio frequency that car audio bus signal transmission is collected
Number, better assure that the high fidelity of audio signal and the real-time of audio transmission, and, one group of car audio bus can
Carry multi pass acquisition noise reducing apparatus simultaneously, significantly reduce vehicle-mounted wiring complexity, reduce car audio system BOM cost,
Significantly mitigate the weight of transmission cable wire harness simultaneously, and then improve automobile fuel efficiency or battery life.
In addition, the implementation in the present invention, due to having carried out voice de-noising process, is therefore particularly suitable for in-car noisy
Environment in, and, the embodiment of the present invention can be flexibly applied in multiple intelligent use, for example, onboard navigation system, vehicle-mounted
Entertainment systems etc..
Although additionally, it will be appreciated by those of skill in the art that some embodiments in this include institute in other embodiments
Including some features rather than further feature, but the combination of the feature of different embodiment means to be in the scope of the present invention
Within and form different embodiments.For example, in the following claims, embodiment required for protection any it
One can in any combination mode using.
The all parts embodiment of the present invention can be realized with hardware, or to run on one or more processor
Software module realize, or with combinations thereof realize.It will be understood by those of skill in the art that can use in practice
Microprocessor or digital signal processor (DSP) are realizing some or all portions in device according to embodiments of the present invention
The some or all functions of part.The present invention is also implemented as a part for executing method as described herein or complete
The equipment in portion or program of device (for example, computer program and computer program).Such program realizing the present invention
Can store on a computer-readable medium, or can have the form of one or more signal.Such signal is permissible
Download from internet website and obtain, or provide on carrier signal, or provided with any other form.
It should be noted that above-described embodiment the present invention will be described rather than limits the invention, and ability
Field technique personnel can design alternative embodiment without departing from the scope of the appended claims.In the claims,
Any reference symbol between bracket should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not
Element listed in the claims or step.Word "a" or "an" before element does not exclude the presence of multiple such
Element.The present invention can come real by means of the hardware including some different elements and by means of properly programmed computer
Existing.If in the unit claim listing equipment for drying, several in these devices can be by same hardware branch
To embody.The use of word first, second, and third does not indicate that any order.These words can be explained and run after fame
Claim.
Claims (10)
1. a kind of phonetic controller for automobile is it is characterised in that include：
Collection noise reduction module, for gather in-car simulated audio signal, described simulated audio signal is carried out analog-to-digital conversion with
And noise reduction process obtains digital audio and video signals, described digital audio and video signals are sent to signal conversion module；
Signal conversion module, for receiving the described digital audio and video signals that described collection noise reduction module sends, by described numeral sound
Frequency signal is converted to car audio bus signals, and is sent described car audio bus signals by car audio EBI
To identification control module；
Identification control module, for being identified to the described car audio bus signals that described signal conversion module sends, root
Execute corresponding control operation according to recognition result.
2. device according to claim 1 is it is characterised in that described collection noise reduction module further includes：Microphone array
Row submodule, for gathering the simulated audio signal of in-car；And,
Noise reduction process submodule, the simulated audio signal for collecting to described microphone array submodule carries out analog-to-digital conversion
And noise reduction process obtains digital audio and video signals, described digital audio and video signals are sent to signal conversion module.
3. device according to claim 2 is it is characterised in that described noise reduction process submodule is specifically for being disappeared by echo
Except technology and Beamforming technology carry out noise reduction process.
4. device according to claim 1 is it is characterised in that the quantity of described collection noise reduction module is multiple and multiple
Collection noise reduction module is connected with described identification control module by described signal conversion module respectively.
5. device according to claim 1 is it is characterised in that described identification control module is specifically for according to recognition result
Execute the control operation of following at least one types：Audio video searching operation, information inquiry operation, vehicle control system and
Voice call operates.
6. a kind of automobile is it is characterised in that include the phonetic controller for automobile described in any one of claim 1-5.
7. a kind of sound control method for automobile is it is characterised in that include：
The in-car simulated audio signal of collection, carries out analog-to-digital conversion to described simulated audio signal and noise reduction process obtains numeral
Audio signal；
Described digital audio and video signals are converted to car audio bus signals；
Described car audio bus signals are identified, corresponding control operation is executed according to recognition result.
8. method according to claim 7 is it is characterised in that described in-car simulated audio signal passes through microphone array
It is acquired.
9. method according to claim 7 it is characterised in that described described simulated audio signal is carried out analog-to-digital conversion with
And noise reduction process is obtained the step of digital audio and video signals and includes being carried out at noise reduction by echo cancellation technology and Beamforming technology
Reason.
10. method according to claim 7 is it is characterised in that described control operation specifically includes following at least one classes
The control operation of type：Audio video searching operation, information inquiry operation, vehicle control system and voice call operation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610726920.0A CN106448667A (en) | 2016-08-25 | 2016-08-25 | Device and method for automobile voice control and automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610726920.0A CN106448667A (en) | 2016-08-25 | 2016-08-25 | Device and method for automobile voice control and automobile |
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| CN106448667A true CN106448667A (en) | 2017-02-22 |
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| CN201610726920.0A Pending CN106448667A (en) | 2016-08-25 | 2016-08-25 | Device and method for automobile voice control and automobile |
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| CN109545219A (en) * | 2019-01-09 | 2019-03-29 | 北京新能源汽车股份有限公司 | Vehicle-mounted voice interaction method, system, equipment and computer readable storage medium |
| CN110460729A (en) * | 2019-08-26 | 2019-11-15 | 延锋伟世通电子科技（南京）有限公司 | A kind of comprehensive voice interactive system of vehicle conference model and method |
| CN110936909A (en) * | 2019-11-29 | 2020-03-31 | 昌辉汽车电气***（安徽）有限公司 | Intelligent switch control system for automobile |
| CN111627435A (en) * | 2020-04-30 | 2020-09-04 | 长城汽车股份有限公司 | Voice recognition method and system and control method and system based on voice instruction |
| CN111694581A (en) * | 2020-04-23 | 2020-09-22 | 湖北亿咖通科技有限公司 | Software upgrading method of automobile noise reduction system and automobile noise reduction system |
| CN111845590A (en) * | 2020-07-30 | 2020-10-30 | 安徽江淮汽车集团股份有限公司 | Vehicle-mounted audio acquisition system and method based on vehicle-mounted Ethernet |
| CN112309416A (en) * | 2020-10-20 | 2021-02-02 | 中国第一汽车股份有限公司 | Vehicle-mounted voice echo eliminating method, system, vehicle and storage medium |
| CN113539260A (en) * | 2021-06-29 | 2021-10-22 | 广州小鹏汽车科技有限公司 | Voice communication method and device based on vehicle |
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| CN109545219A (en) * | 2019-01-09 | 2019-03-29 | 北京新能源汽车股份有限公司 | Vehicle-mounted voice interaction method, system, equipment and computer readable storage medium |
| CN110460729A (en) * | 2019-08-26 | 2019-11-15 | 延锋伟世通电子科技（南京）有限公司 | A kind of comprehensive voice interactive system of vehicle conference model and method |
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| CN111845590A (en) * | 2020-07-30 | 2020-10-30 | 安徽江淮汽车集团股份有限公司 | Vehicle-mounted audio acquisition system and method based on vehicle-mounted Ethernet |
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| CN112309416B (en) * | 2020-10-20 | 2022-11-29 | 中国第一汽车股份有限公司 | Vehicle-mounted voice echo eliminating method, system, vehicle and storage medium |
| CN113539260A (en) * | 2021-06-29 | 2021-10-22 | 广州小鹏汽车科技有限公司 | Voice communication method and device based on vehicle |
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