CN107146629A - The echo cancellation system recognized based on vehicle-mounted voice - Google Patents
The echo cancellation system recognized based on vehicle-mounted voice Download PDFInfo
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- CN107146629A CN107146629A CN201710287839.1A CN201710287839A CN107146629A CN 107146629 A CN107146629 A CN 107146629A CN 201710287839 A CN201710287839 A CN 201710287839A CN 107146629 A CN107146629 A CN 107146629A
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- voice
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- echo cancellation
- voice acquisition
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- 239000011159 matrix material Substances 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Classifications
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Computational Linguistics (AREA)
- Quality & Reliability (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The present invention discloses a kind of echo cancellation system recognized based on vehicle-mounted voice, and the system includes the first voice acquisition module, the second voice acquisition module and central processing module；Wherein, the first voice acquisition module is for voice messaging in collecting vehicle and is sent to central processing module, and the in-car voice messaging includes the voice messaging that the command information and onboard system audio-frequence player device of user are played；Second voice acquisition module is used to gather the voice messaging of onboard system audio-frequence player device and is sent to central processing module；Central processing module is connected with the first voice acquisition module and the second voice acquisition module, and the voice messaging for the onboard system audio-frequence player device according to the second voice acquisition module is handled the in-car voice messaging from the first voice acquisition module.The echo cancellation system of the present invention eliminates the sound for the loudspeaker being mingled with in-car voice messaging by acoustic echo technology for eliminating, to restore the voice signal of user, is easy to the identification of user instruction.
Description
Technical field
The present invention relates to field of audio processing, relate more specifically to a kind of echo cancellation system recognized based on vehicle-mounted voice
System.
Background technology
As vehicle electronic device function is more and more, the operation to be carried out also becomes increasingly complex, driving safety therefore by
To influence, although the behavior such as handheld mobile phone call is punished when many countries even use legislative means to driving, but
Problem can not be solved from basic.It therefore, it can liberate the both hands and eyes of driver, the car of important leverage be provided for driving safety
Speech recognition technology is carried gradually to be taken seriously.
It is the thing that people dream of for a long time to carry out speech exchange with machine, and vehicle-mounted voice identification technology is exactly to allow
Machine is by recognizing and understanding voice signal, so that it to be changed into the technology ordered accordingly, be it is man-machine between most naturally, most
Succinct exchange way, it is employed in automotive system more and more widely.But due to playing song or news in the car
Deng voice messaging when, interior space is narrow, and the sound that loudspeaker goes out can repeatedly feed back to microphone, this moment microphone gather
The voice signal arrived includes the voice signal that people's one's voice in speech signal and loudspeaker are played, and very big difficulty is brought to speech recognition
Degree.
In consideration of it, being necessary to provide a kind of voice signal collected using acoustic echo technology for eliminating elimination microphone
In the voice signal of loudspeaker that is mingled with, with the echo cancellation system recognized based on vehicle-mounted voice for the voice signal for restoring user
Unite to solve drawbacks described above.
The content of the invention
The technical problems to be solved by the invention, which are to provide one kind, to eliminate Mike's elegance using acoustic echo technology for eliminating
The voice signal for the loudspeaker being mingled with the voice signal collected, with restore user voice signal based on vehicle-mounted voice know
Other echo cancellation system is to solve drawbacks described above.
In order to solve the above technical problems, the present invention provides a kind of echo cancellation system recognized based on vehicle-mounted voice, it should
For in onboard system, the echo cancellation system that should be recognized based on vehicle-mounted voice to be included：One first voice acquisition module, one second
Voice acquisition module and a central processing module.Wherein, first voice acquisition module, for voice messaging in collecting vehicle
And the central processing module is sent to, the command information and onboard system audio that the in-car voice messaging includes user are broadcast
Put the voice messaging of device plays；Second voice acquisition module, the voice for gathering onboard system audio-frequence player device
Information is simultaneously sent to the central processing module；The central processing module, with first voice acquisition module and the second language
Sound acquisition module is connected, for the voice messaging pair according to the onboard system audio-frequence player device from the second voice acquisition module
In-car voice messaging from the first voice acquisition module is handled.
Its further technical scheme is：First voice acquisition module includes what is be made up of one or more microphone
Microphone matrix.
Its further technical scheme is：Second voice acquisition module includes being not provided with pickup by one or more
The microphone matrix that the microphone of device is constituted.
Its further technical scheme is：The central processing module includes central processing unit/microprocessor and non-volatile
Memory.
Its further technical scheme is：Connected between second voice acquisition module and onboard system audio-frequence player device
There are an A/B power amplifier modules.
Its further technical scheme is：A current limliting is connected between second voice acquisition module and A/B power amplifier modules
Module.
Compared with prior art, the echo cancellation system of the invention recognized based on vehicle-mounted voice passes through the first voice collecting
The voice messaging of voice messaging and onboard system audio-frequence player device in module and the second voice acquisition module difference collecting vehicle, and
It is sent to central processing module and carries out the audio-frequence player device broadcasting that echo cancellation processing is mingled with to eliminate in in-car voice messaging
Voice messaging, restore the voice signal of user, be easy to the identification of user instruction, and the echo cancellation technology of the process is not required to
Specialty AEC chips, be that can be achieved only by the echo cancellation algorithm in central processing module, can greatly reduce equipment into
This.
Brief description of the drawings
Fig. 1 is the schematic diagram for the specific embodiment of echo cancellation system one that the present invention is recognized based on vehicle-mounted voice.
Embodiment
To make one of ordinary skill in the art be more clearly understood from the object, technical solutions and advantages of the present invention, with
Under the present invention is further elaborated in conjunction with the accompanying drawings and embodiments.
Reference picture 1, Fig. 1 illustrates the specific embodiment of echo cancellation system one recognized based on vehicle-mounted voice of the present invention
Schematic diagram.The present invention's is applied in onboard system based on the echo cancellation system that vehicle-mounted voice is recognized, with such as but not by
The audio-frequence player device 14 of loudspeaker is limited to, what the equipment 14 was well known to those skilled in the art, it will not be repeated here.In accompanying drawing
In shown embodiment, the system includes：One first voice acquisition module 11, one second voice acquisition module 12 and a center
Processing module 13.
Wherein, first voice acquisition module 11, for voice messaging in collecting vehicle and be sent to it is described center processing
Module 13, the in-car voice messaging includes the voice that the command information and onboard system audio-frequence player device 14 of user are played
Information.The command information of the user includes weather lookup, road condition query, news queries, music searching and broadcasting, navigator fix
Etc. information；What the onboard system audio-frequence player device 14 was played be obtain after the recognition of speech signals of central processing module 13 with
The information that the voice messaging received matches, the information matched includes weather condition, road conditions, music, news, navigation
The information such as route, these information can network real-time update.First voice acquisition module 11 is included by one or more Mike
The microphone matrix that wind is constituted.
Second voice acquisition module 12, voice messaging and transmission for gathering onboard system audio-frequence player device 14
To the central processing module 13；Second voice acquisition module 12 collection is by being sent out after digital-to-analogue conversion and amplifying circuit
Toward audio-frequence player device 14 play out with the speech simulation signal of the information match received.Second voice collecting
Module 12 includes the microphone matrix being made up of one or more microphone for being not provided with sound pick up equipment.
The central processing module 13, is connected with the voice acquisition module 12 of the first voice acquisition module 11 and second,
Voice messaging for onboard system audio-frequence player device 14 of the basis from the second voice acquisition module 12 is to from the first language
The in-car voice messaging of sound acquisition module 11 carries out echo cancellation processing, to restore the voice signal of user, is easy to user to refer to
The identification of order.The central processing module 13 includes central processing unit/microprocessor and nonvolatile memory.Wherein, it is described
Central processing unit or microprocessor can use the ARM architecture processors of high-performance low-power-consumption, and it possesses abundant interface, can with it is outer
Portion's module connection and communication；Nonvolatile memory is used to store the embedded OS of whole system operation and answering for correlation
With program or algorithm (such as echo cancellation algorithm), the configuration information and some interim user data of storage system are additionally operable to.
In some embodiments, such as the present embodiment, second voice acquisition module 12 is played with onboard system audio
An A/B power amplifier modules 15 are connected between equipment 14.The A/B power amplifiers are also known as class AB power amplifier, and the module is used for will simulation
Audio signal carries out power amplification.
In the embodiment shown in the figures, it is preferable that second voice acquisition module 12 and A/B power amplifier modules of the present embodiment
A current limliting module 16 is connected between 15.The current limliting module 16 is used to prevent the power device in second voice acquisition module 12
Part is damaged by heavy current impact.
In summary, the echo cancellation system of the invention recognized based on vehicle-mounted voice by the first voice acquisition module and
The voice messaging of voice messaging and onboard system audio-frequence player device in second voice acquisition module difference collecting vehicle, and be sent to
Central processing module carries out the voice for the audio-frequence player device broadcasting that echo cancellation processing is mingled with to eliminate in in-car voice messaging
Information, restores the voice signal of user, is easy to the identification of user instruction, and the echo cancellation technology of the process is not required to specialty
AEC chips, are that can be achieved only by the echo cancellation algorithm in central processing module, can greatly reduce the cost of equipment.
The preferred embodiments of the present invention are the foregoing is only, rather than any formal limitation is done to the present invention.This area
Technical staff various equivalent changes and improvement, all institutes within the scope of the claims can be imposed on the basis of above-described embodiment
The equivalent variations done or modification, all should fall under the scope of the present invention.
Claims (6)
1. a kind of echo cancellation system recognized based on vehicle-mounted voice, applied in onboard system, it is characterised in that described to be based on
The echo cancellation system of vehicle-mounted voice identification includes：In one first voice acquisition module, one second voice acquisition module and one
Entreat processing module；Wherein,
First voice acquisition module, for voice messaging in collecting vehicle and is sent to the central processing module, the car
Interior voice messaging includes the voice messaging that the command information and onboard system audio-frequence player device of user are played；
Second voice acquisition module, for gather the voice messaging of onboard system audio-frequence player device and be sent to it is described in
Entreat processing module；
The central processing module, is connected with first voice acquisition module and the second voice acquisition module, for according to next
Voice messaging from the onboard system audio-frequence player device of the second voice acquisition module is to the car from the first voice acquisition module
Interior voice messaging is handled.
2. the echo cancellation system as claimed in claim 1 recognized based on vehicle-mounted voice, it is characterised in that：First voice
Acquisition module includes the microphone matrix being made up of one or more microphone.
3. the echo cancellation system as claimed in claim 1 recognized based on vehicle-mounted voice, it is characterised in that：Second voice
Acquisition module includes the microphone matrix being made up of one or more microphone for being not provided with sound pick up equipment.
4. the echo cancellation system as claimed in claim 1 recognized based on vehicle-mounted voice, it is characterised in that：The center processing
Module includes central processing unit/microprocessor and nonvolatile memory.
5. the echo cancellation system as claimed in claim 1 recognized based on vehicle-mounted voice, it is characterised in that：Second voice
An A/B power amplifier modules are connected between acquisition module and onboard system audio-frequence player device.
6. the echo cancellation system recognized based on vehicle-mounted voice as claimed in claim 5, it is characterised in that：Second language
A current limliting module is connected between sound acquisition module and A/B power amplifier modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710287839.1A CN107146629A (en) | 2017-04-27 | 2017-04-27 | The echo cancellation system recognized based on vehicle-mounted voice |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710287839.1A CN107146629A (en) | 2017-04-27 | 2017-04-27 | The echo cancellation system recognized based on vehicle-mounted voice |
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| CN107146629A true CN107146629A (en) | 2017-09-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112885365A (en) * | 2021-01-08 | 2021-06-01 | 上海锐承通讯技术有限公司 | Echo eliminating device and vehicle-mounted intelligent terminal |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203721182U (en) * | 2013-12-25 | 2014-07-16 | 安徽科大讯飞信息科技股份有限公司 | A vehicle-mounted speech processing system |
| CN204652649U (en) * | 2015-05-11 | 2015-09-16 | 重庆徐港电子有限公司 | For the microphone echo cancel circuit of vehicle-mounted voice identification |
| CN105448294A (en) * | 2015-12-09 | 2016-03-30 | 江苏天安智联科技股份有限公司 | Intelligent voice recognition system for vehicle equipment |
| CN105825862A (en) * | 2015-01-05 | 2016-08-03 | 沈阳新松机器人自动化股份有限公司 | Robot man-machine dialogue echo cancellation system |
| US20170041457A1 (en) * | 2015-05-04 | 2017-02-09 | Captioncall, Llc | Updating filter coefficients during echo cancellation |
| CN106601245A (en) * | 2016-12-15 | 2017-04-26 | 北京塞宾科技有限公司 | Vehicle-mounted intelligent audio device and audio processing method |
-
2017
- 2017-04-27 CN CN201710287839.1A patent/CN107146629A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203721182U (en) * | 2013-12-25 | 2014-07-16 | 安徽科大讯飞信息科技股份有限公司 | A vehicle-mounted speech processing system |
| CN105825862A (en) * | 2015-01-05 | 2016-08-03 | 沈阳新松机器人自动化股份有限公司 | Robot man-machine dialogue echo cancellation system |
| US20170041457A1 (en) * | 2015-05-04 | 2017-02-09 | Captioncall, Llc | Updating filter coefficients during echo cancellation |
| CN204652649U (en) * | 2015-05-11 | 2015-09-16 | 重庆徐港电子有限公司 | For the microphone echo cancel circuit of vehicle-mounted voice identification |
| CN105448294A (en) * | 2015-12-09 | 2016-03-30 | 江苏天安智联科技股份有限公司 | Intelligent voice recognition system for vehicle equipment |
| CN106601245A (en) * | 2016-12-15 | 2017-04-26 | 北京塞宾科技有限公司 | Vehicle-mounted intelligent audio device and audio processing method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112885365A (en) * | 2021-01-08 | 2021-06-01 | 上海锐承通讯技术有限公司 | Echo eliminating device and vehicle-mounted intelligent terminal |
| CN112885365B (en) * | 2021-01-08 | 2024-04-30 | 上海锐承通讯技术有限公司 | Echo cancellation device and vehicle-mounted intelligent terminal |
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Application publication date: 20170908 |