CN108597490A - A kind of car audio clunk management system - Google Patents
A kind of car audio clunk management system Download PDFInfo
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- CN108597490A CN108597490A CN201810630089.8A CN201810630089A CN108597490A CN 108597490 A CN108597490 A CN 108597490A CN 201810630089 A CN201810630089 A CN 201810630089A CN 108597490 A CN108597490 A CN 108597490A
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- management system
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
- G10K11/17821—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the input signals only
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1783—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions
- G10K11/17837—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions by retaining part of the ambient acoustic environment, e.g. speech or alarm signals that the user needs to hear
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/128—Vehicles
- G10K2210/1282—Automobiles
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/128—Vehicles
- G10K2210/1282—Automobiles
- G10K2210/12822—Exhaust pipes or mufflers
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/301—Computational
- G10K2210/3045—Multiple acoustic inputs, single acoustic output
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The present invention relates to a kind of car audio clunk management systems, including host and vehicle-mounted ANC and entertainment systems, wherein host controls each audio, functional node interworking, to complete whole vehicle information, intelligentized needs as control and arithmetic core；Vehicle-mounted ANC system is as a node in entire car audio clunk management system, participate in the interaction between each node of vehicle, it is by collected detection information by AD conversion, DSP processing, then it is played by loud speaker, complete ANC noise cleanings, replace host DSP module to carry out noise reduction process by the DSP module in isolated node, and then improve active noise and eliminate operation efficiency, reduces influences of the ANC to the operation fluency in terms of host multimedia service；The acquisition and pretreatment that using acceierometer sensor the states such as road conditions are carried out with feed forward type realize that comprehensive active noise is eliminated.
Description
Technical field
The present invention relates to a kind of car audio clunk management systems, belong to car audio detection technique field.
Background technology
Improve car steering experience not to be focusing only in the manipulation and operation of vehicle, further includes improving interior environment
Comfort level.Clunk management system is installed on vehicle, executes various audio digital signals treatment technologies, with enhancing, inhibit and/or
Eliminate the indoor noise in vehicle interior cabin.Automobile noise management system may include be mounted on each position of vehicle one or more
A sensor (for example, microphone, accelerometer etc.), with monitoring and detection noise source, such as engine noise, wind noise, vehicle
Vibration, road rumble, tyre cavity noise or other noises based on vibration caused by mobile vehicle part.
Existing car audio clunk management system has the following disadvantages：
1) microphone and loud speaker dispersed placement in cabin are generally used in existing onboard audio clunk management system, environment because
Element influences big, layout complexity, and noise reduction system debugging is complicated.
2) existing vehicle-mounted active noise is eliminated（ANC）System, generally using the wheat being dispersed in automobile passenger compartment everywhere
After gram wind pickup noise, transmits signals in host digital signal processing module and handled, then be transmitted to power amplifier and loudspeaker
Reverse phase sound wave is sent out to reach noise reduction.This mode can have higher want to the operational capability of host digital signal processing module
It asks, reduces operation fluency of the host digital signal processing module in terms of other multimedia services, and distributed signal comes
Past, overall wire sheaves arrangement is extremely complex.
3) existing vehicle-mounted active noise cancellation systems, only detection are driven interior noise, are disappeared using reaction type active noise
Except technology, without to Main Noise Sources --- engine noise, road are made an uproar and chassis vibration carries out the acquisition of feed forward type and pre- place
Reason, noise reduction are poor.
Invention content
The technical problem to be solved by the present invention is to be directed to the above deficiency, a kind of car audio clunk management system is provided, is led to
The DSP module substitution host DSP module crossed in isolated node carries out noise reduction process, and then improves active noise and eliminate operation effect
Rate reduces influences of the ANC to the operation fluency in terms of host multimedia service；Using acceierometer sensor to shapes such as road conditions
State carries out the acquisition and pretreatment of feed forward type, realizes that comprehensive active noise is eliminated；Entire noise reduction system is placed near loud speaker,
Ensure the noise level of environment near loud speaker.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：A kind of car audio clunk management system
System, including host and vehicle-mounted ANC and entertainment systems, wherein
Host controls each audio, functional node interworking, to complete whole vehicle information, intelligence as control and arithmetic core
The needs of energyization；
Vehicle-mounted ANC system is participated in as a node in entire car audio clunk management system between each node of vehicle
Then interaction is played by collected detection information by AD conversion, DSP processing by loud speaker, it is clear to complete ANC noises
It removes.
As a further improvement of the above technical scheme：
The vehicle-mounted ANC system includes three parts：Sensor assembly, ANC master controls plate module, loud speaker.
The ANC master controls plate module includes analog-to-digital conversion device, voice communication interface, can be used for noisy digit signal processing
DSP module, power amplifier.
The sensor assembly include for acquire road surface by automobile tire conduction come noise signal needed for acceleration
Spend sensor and the microphone for sound signal collecting in the passenger compartment of feedback.
The DSP module is used for by the collected voice signal digitized of acceleration transducer and microphone, with master
Machine is compared by the wanted sound signal that voice communication interface transmits, to distinguish useful signal and noise signal, then
Noise signal is subjected to reverse phase processing, to carry out noise reduction process.
The noise reduction process process is：By the phase of the collected noise signal of microphone it is reversed after, with identical amplitude
It is played back by loud speaker, you can to achieve the purpose that noise reduction.
The voice communication interface is for the data interaction with host and remaining each functional node, mainly from bus
It obtains control signal and host to be passed to the audio signal of vehicle-mounted power amplifier and loud speaker.
The analog-digital converter is used for acceleration transducer or the collected analog signal digital of microphone, for
Digital Signal Processing.
The analog-digital converter is individually present or is integrated in inside acceleration transducer, microphone or DSP module.
The DSP module is electrically connected with analog-digital converter, power amplifier, voice communication interface respectively, analog-digital converter
Including the first analog-digital converter and the second analog-digital converter, the first analog-digital converter is electrically connected with acceleration transducer, the second mould
Number converter is electrically connected with microphone；Power amplifier is electrically connected with loud speaker.
The present invention takes above technical scheme, has the following advantages：
1) microphone in cabin and loud speaker are integrated into a module, layout is simple, is easy debugging, harness is at low cost, one-stop
Vehicle ANC application demands are solved, are not easy affected by environment.
2) by replacing host digital signal processing module to carry out noise reduction process from node DSP, and then active noise is improved
Operation efficiency is eliminated, the operation fluency in terms of multimedia service is improved.
3) using feed forward type active noise to eliminate, noise reduction mode makes an uproar to engine noise, road and chassis vibration feedovers
The acquisition and pretreatment of formula can reach the 20dB noise reduction capabilities not less than the prior art, realize that comprehensive active noise is eliminated.
The invention will be further described with reference to the accompanying drawings and examples.
Description of the drawings
Attached drawing 1 is the structural schematic diagram of car audio clunk management system in the embodiment of the present invention.
In figure, 1- hosts；The second analog-digital converters of 2-；3- voice communication interfaces；4- master control plate modules；5- acceleration sensings
Device；The first analog-digital converters of 6-；7-DSP modules；8- microphones；9- power amplifiers；10- loud speakers.
Specific implementation mode
Embodiment, as shown in Fig. 1, a kind of car audio clunk management system, including host 1 and centralized arrangement are vehicle-mounted
ANC system, wherein host 1 controls each audio, functional node interworking, to complete vehicle as control and arithmetic core
Information-based, intelligentized needs.
Vehicle-mounted ANC system participates in each node of vehicle as a node in entire car audio clunk management system
Between interaction, by collected detection information by AD conversion, DSP processing, then played by loud speaker, completion ANC make an uproar
Sound is removed.
Vehicle-mounted ANC system includes three parts：Sensor assembly, ANC master controls plate module 4, loud speaker 10.ANC master control borads
Module 4 includes analog-to-digital conversion device, voice communication interface 3, the DSP module 7 that can be used for noisy digit signal processing, power amplifier
9。
1) sensor assembly include for acquire road surface by automobile tire conduction come noise signal needed for acceleration
Sensor 5 and microphone 8 for sound signal collecting in the passenger compartment of feedback.Noise outside passenger compartment includes that engine is made an uproar
Sound, road are made an uproar and chassis vibration noise.
2) master control borad：
DSP module 7 is electrically connected with analog-digital converter, power amplifier 9, voice communication interface 3 respectively, and analog-digital converter includes the
One analog-digital converter 6 and the second analog-digital converter 2, the first analog-digital converter 6 are electrically connected with acceleration transducer 5, the second modulus
Converter 2 is electrically connected with microphone 8；Power amplifier 9 is electrically connected with loud speaker 10.
a）Voice communication interface 3 is for the data interaction with host 1 and remaining each functional node, mainly from bus
It obtains control signal and host to be passed to the audio signal of vehicle-mounted power amplifier and loud speaker.
The voice communication interface, including but not limited to following two ways：The daisy topology concatenated between each node,
Whole-vehicle wiring is simple；Or each node is connected to alone the Star topology of host by tone frequency channel wire, whole-vehicle wiring is more complex；Other cloth
Line mode.
b）Analog-digital converter is used for 8 collected analog signal digital of acceleration transducer 5 or microphone, for
Digital Signal Processing.Analog-digital converter can be individually present, and can also be integrated in acceleration transducer 5, microphone 8 or DSP moulds
Inside block 7.
c）DSP module 7 is used for by acceleration transducer 5 and the collected voice signal digitized of microphone 8, with master
Machine is compared by the wanted sound signal that voice communication interface transmits, to distinguish useful signal and noise signal, then
Noise signal is subjected to reverse phase processing, so as to the noise reduction process of next step, the noise reduction process process is：Microphone 8 is acquired
After the phase of the noise signal arrived is reversed, played back by loud speaker 10 with identical amplitude, original sound wave is broadcast with loud speaker 10
The sound wave interference put.Because the amplitude of two interference sound waves is identical, opposite in phase, therefore can achieve the purpose that noise reduction.
d）Power amplifier 9 is for by DSP module 7, treated, the noise signal of useful signal and reverse process, into
Row power amplification plays sound for drive the speaker 10.
3）Loud speaker 10 completes ANC noise reductions for playing sound.
Claims (10)
1. a kind of car audio clunk management system, it is characterised in that：Including host（1）With vehicle-mounted ANC and entertainment systems,
In,
Host（1）As control and arithmetic core, control each audio, functional node interworking, with complete whole vehicle information,
Intelligentized needs；
Vehicle-mounted ANC system is participated in as a node in entire car audio clunk management system between each node of vehicle
Then interaction is played by collected detection information by AD conversion, DSP processing by loud speaker, it is clear to complete ANC noises
It removes.
2. a kind of car audio clunk management system as described in claim 1, it is characterised in that：The vehicle-mounted ANC system packet
Containing three parts：Sensor assembly, ANC master control plate modules（4）, loud speaker（10）.
3. a kind of car audio clunk management system as claimed in claim 2, it is characterised in that：The ANC master controls plate module
（4）Including analog-to-digital conversion device, voice communication interface（3）, can be used for the DSP module of noisy digit signal processing（7）, power amplification
Device（9）.
4. a kind of car audio clunk management system as claimed in claim 2, it is characterised in that：The sensor assembly includes
For acquire road surface by automobile tire conduction come noise signal needed for acceleration transducer（5）With the passenger for feedback
The microphone of sound signal collecting in cabin（8）.
5. a kind of car audio clunk management system as claimed in claim 3, it is characterised in that：The DSP module（7）For
By acceleration transducer（5）And microphone（8）The collected voice signal digitized passes through voice communication interface with host
The wanted sound signal transmitted is compared, and to distinguish useful signal and noise signal, then noise signal is carried out reverse phase
Processing, to carry out noise reduction process.
6. a kind of car audio clunk management system as claimed in claim 5, it is characterised in that：The noise reduction process process
For：By microphone（8）After the phase of collected noise signal is reversed, loud speaker is passed through with identical amplitude（10）It plays out
Come, you can to achieve the purpose that noise reduction.
7. a kind of car audio clunk management system as claimed in claim 3, it is characterised in that：The voice communication interface
（3）For with host（1）With the data interaction of remaining each functional node, control signal and host are mainly obtained from bus
To be passed to the audio signal of vehicle-mounted power amplifier and loud speaker.
8. a kind of car audio clunk management system as claimed in claim 4, it is characterised in that：The analog-digital converter is used for
By acceleration transducer（5）Or microphone（8）Collected analog signal digital, for Digital Signal Processing.
9. a kind of car audio clunk management system as claimed in claim 8, it is characterised in that：The analog-digital converter is independent
In the presence of or be integrated in acceleration transducer（5）, microphone（8）Or DSP module（7）It is internal.
10. a kind of car audio clunk management system as described in right wants 4, it is characterised in that：The DSP module（7）Respectively
With analog-digital converter, power amplifier（9）, voice communication interface（3）Electrical connection, analog-digital converter include the first analog-digital converter
（6）With the second analog-digital converter（2）, the first analog-digital converter（6）With acceleration transducer（5）Electrical connection, the second analog-to-digital conversion
Device（2）With microphone（8）Electrical connection；Power amplifier（9）With loud speaker（10）Electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810630089.8A CN108597490A (en) | 2018-06-19 | 2018-06-19 | A kind of car audio clunk management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810630089.8A CN108597490A (en) | 2018-06-19 | 2018-06-19 | A kind of car audio clunk management system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108597490A true CN108597490A (en) | 2018-09-28 |
Family
ID=63628294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810630089.8A Withdrawn CN108597490A (en) | 2018-06-19 | 2018-06-19 | A kind of car audio clunk management system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109686356A (en) * | 2018-11-14 | 2019-04-26 | 上海迪彼电子科技有限公司 | A kind of vehicle power amplifier integrated system of ANC active noise reduction |
| CN110056495A (en) * | 2018-12-25 | 2019-07-26 | 浙江零跑科技有限公司 | New energy vehicle electric vacuum pump active noise reducing device |
| CN110636410A (en) * | 2019-10-22 | 2019-12-31 | 东莞烨嘉电子科技有限公司 | Power amplifier processing system for automobile and processing method thereof |
| CN111554262A (en) * | 2020-03-20 | 2020-08-18 | 爱驰汽车有限公司 | Automobile noise reduction system and automobile using same |
| CN111613202A (en) * | 2020-06-28 | 2020-09-01 | 清华大学苏州汽车研究院（相城） | Active control system for in-vehicle noise reduction and control method thereof |
| CN112420029A (en) * | 2020-07-27 | 2021-02-26 | 宝能(广州)汽车研究院有限公司 | Vehicle and sound processing system for vehicle |
| CN113490113A (en) * | 2021-07-06 | 2021-10-08 | 深圳市亚昱科技有限公司 | Loudspeaker subassembly, audio power amplifier system and new energy automobile |
| CN113689842A (en) * | 2021-08-20 | 2021-11-23 | 浙江吉利控股集团有限公司 | Integrated system for active noise reduction and audio power amplification of automobile |
| CN113874732A (en) * | 2019-06-19 | 2021-12-31 | 思睿逻辑国际半导体有限公司 | Device and method for wind detection by acceleration measurement |
| CN115206279A (en) * | 2022-07-06 | 2022-10-18 | 中国第一汽车股份有限公司 | Vehicle noise reduction processing system and method and vehicle |
-
2018
- 2018-06-19 CN CN201810630089.8A patent/CN108597490A/en not_active Withdrawn
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109686356A (en) * | 2018-11-14 | 2019-04-26 | 上海迪彼电子科技有限公司 | A kind of vehicle power amplifier integrated system of ANC active noise reduction |
| CN110056495A (en) * | 2018-12-25 | 2019-07-26 | 浙江零跑科技有限公司 | New energy vehicle electric vacuum pump active noise reducing device |
| US11659326B2 (en) | 2019-06-19 | 2023-05-23 | Cirrus Logic, Inc. | Apparatus for and method of wind detection |
| CN113874732B (en) * | 2019-06-19 | 2023-06-09 | 思睿逻辑国际半导体有限公司 | Device and method for wind detection by acceleration measurement |
| CN113874732A (en) * | 2019-06-19 | 2021-12-31 | 思睿逻辑国际半导体有限公司 | Device and method for wind detection by acceleration measurement |
| CN110636410A (en) * | 2019-10-22 | 2019-12-31 | 东莞烨嘉电子科技有限公司 | Power amplifier processing system for automobile and processing method thereof |
| CN111554262A (en) * | 2020-03-20 | 2020-08-18 | 爱驰汽车有限公司 | Automobile noise reduction system and automobile using same |
| CN111613202A (en) * | 2020-06-28 | 2020-09-01 | 清华大学苏州汽车研究院（相城） | Active control system for in-vehicle noise reduction and control method thereof |
| CN112420029A (en) * | 2020-07-27 | 2021-02-26 | 宝能(广州)汽车研究院有限公司 | Vehicle and sound processing system for vehicle |
| CN113490113A (en) * | 2021-07-06 | 2021-10-08 | 深圳市亚昱科技有限公司 | Loudspeaker subassembly, audio power amplifier system and new energy automobile |
| CN113490113B (en) * | 2021-07-06 | 2023-12-19 | 深圳市亚昱科技有限公司 | Horn assembly, audio power amplifier system and new energy automobile |
| CN113689842A (en) * | 2021-08-20 | 2021-11-23 | 浙江吉利控股集团有限公司 | Integrated system for active noise reduction and audio power amplification of automobile |
| CN115206279A (en) * | 2022-07-06 | 2022-10-18 | 中国第一汽车股份有限公司 | Vehicle noise reduction processing system and method and vehicle |
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Application publication date: 20180928 |
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