CN201114734Y - An onboard sound self-adapted sound field adjusting device - Google Patents
An onboard sound self-adapted sound field adjusting device Download PDFInfo
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- CN201114734Y CN201114734Y CNU2007200583852U CN200720058385U CN201114734Y CN 201114734 Y CN201114734 Y CN 201114734Y CN U2007200583852 U CNU2007200583852 U CN U2007200583852U CN 200720058385 U CN200720058385 U CN 200720058385U CN 201114734 Y CN201114734 Y CN 201114734Y
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Abstract
The utility model discloses a self adaptive acoustic field regulating device of vehicle sound equipment, which consists of a main engine of the sound equipment and a loudspeaker connected at the main engine of the sound equipment. The regulating device has the characteristics and the technical scheme that: the periphery of the main engine of the sound equipment is provided with a microphone; the main engine of the sound equipment is internally equipped with a main control CPU, an A/D converting circuit, a waveform comparison circuit, a DSP processing circuit, a sound waveform-generating circuit and a D/A converting circuit; the waveform comparison circuit is mutually connected with the DSP processing circuit and is arranged between the A/D converting circuit and the D/A converting circuit; the output terminal of the D/A converting circuit is equipped with a power amplifying circuit that is connected with the loudspeaker; the DSP circuit is connected with the main control CPU that is externally connected with a display. The self adaptive sound field regulating device effectively solves the problem of generating phenomena such as inaccurate positioning and audio mixing, etc., caused by the non-equal distance between the loudspeaker and the audience, which has simple structure and convenient operation.
Description
Technical field
The utility model relates to the on-vehicle acoustic apparatus field, more particularly relates to a kind of vehicle audio adjusting device.
Background technology
At present, what occur on the market is installed on the automobile, the stereo set that is used for music, mainly by being arranged on the main system of audio on the automobile control panel and being distributed in loud speaker in the automobile bodies, generally speaking, for fear of taking too much space, loud speaker all is arranged near the front and back door.Difference because of various vehicle sound system parameters, parameters such as the loud speaker frequency width of cloth curve of particularly every money vehicle all have nothing in common with each other, and the audience is sitting on the automobile, and each loud speaker and audience's distance is all unequal, because the speed that sound is propagated in air is slower, simultaneously, in the process of propagating, also can subdue, influence tonequality, therefore, the driver who is sitting in the automobile thinks that always sound equipment has certain audio mixing and sound is forbidden the location mutually, is difficult to adjust to desirable state.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure for the deficiency that solves prior art exactly, and is easy for installation, effectively guarantees the vehicle-mounted acoustics self-adaptive sound field adjusting device of the good tonequality of sound equipment.
The utility model is to adopt following technical solution to realize above-mentioned purpose: a kind of vehicle-mounted acoustics self-adaptive sound field adjusting device of the utility model, comprise main system of audio and be connected loud speaker on the main system of audio, it is characterized in that, described main system of audio periphery is provided with microphone, be provided with master cpu in the main system of audio, the A/D change-over circuit, the waveform comparison circuit, the DSP treatment circuit, sound wave produces circuit and D/A change-over circuit, waveform comparison circuit and DSP treatment circuit interconnect and are arranged between A/D change-over circuit and the D/A change-over circuit, the output of D/A change-over circuit is provided with power amplification circuit, power amplification circuit links to each other with loud speaker, the DSP circuit connects master cpu, the external display of this master cpu.
Described microphone is arranged on the position of the anthropomorphic ear of intermediate die at seat, and is connected with the audio input end of main system of audio by cable.
Be preset with the contrast waveform of frequency in 20HZ～20kHZ scope in the described main system of audio.
The beneficial effect that the utility model adopts above-mentioned technical solution to reach is: the utility model employing predeterminated frequency on main system of audio is the acoustic waveform in 20HZ～20kHZ scope, by at main system of audio outer periphery microphone, the audio signal that microphone is received is converted to digital signal, and on display screen, demonstrate its oscillogram, simultaneously, itself and default contrast waveform are compared, proofread and correct adjustment by main system of audio DSP, signal through the output of D/A converter circuit is provided for each channel loudspeaker, efficiently solve the difference of loud speaker and cause producing the audio mixing phenomenon because each loud speaker and audience's distance is unequal, and it is simple in structure, easy to use.
Description of drawings
Fig. 1 is circuit catenation principle figure of the present utility model.
Description of reference numerals: 1, main system of audio 1-1, master cpu 1-2, A/D change-over circuit 1-3, waveform comparison circuit 1-4, DSP treatment circuit 1-5, sound wave produce circuit 1-6, D/A change-over circuit 2, loud speaker 3, microphone 4, power amplification circuit 5, display
Embodiment
The utility model is a kind of vehicle-mounted acoustics self-adaptive sound field adjusting device, comprise main system of audio 1 and be connected loud speaker 2 on the main system of audio, described main system of audio 1 periphery is provided with microphone 3, be provided with master cpu 1-1 in the main system of audio 1, A/D change-over circuit 1-2, waveform comparison circuit 1-3, DSP treatment circuit 1-4, sound wave produces circuit 1-5 and D/A change-over circuit 1-6, waveform comparison circuit 1-3 and DSP treatment circuit 1-4 interconnect and are arranged between A/D change-over circuit 1-2 and the D/A change-over circuit 1-6, the output of D/A change-over circuit 1-6 is provided with power amplification circuit 4, power amplification circuit 4 links to each other with loud speaker 2, DSP treatment circuit 1-4 connects master cpu 1-1, the external display 5 of this master cpu 1-1.Described microphone 3 is arranged on the position of anthropomorphic dummy's ear at seat, and is connected with the audio input end of main system of audio by cable, is preset with the contrast waveform of frequency in 20HZ～20kHZ scope in the main system of audio.
In the use, in main system of audio, be provided with earlier sound wave generation circuit, produce the acoustic signals in the frequency 20Hz-20KHz scope.Acoustic signals by a preceding left side, the preceding right side, back time sequencing right, a left side, back independent respectively through a preceding left side, right, the back L channel power amplification circuit in the preceding right side, back amplifies the back and exported by the loud speaker of sound channel separately; Operator seat, copilot position, player No.5 position, back right position, centre position are divided by the seat in the audition optimum position in the car.To test dedicated microphone and be placed on earlier in the middle of the operator seat, a preceding left side that receives respectively, the preceding right side, back acoustic signals right, a left side, back be fed back to main system of audio respectively by microphone, and with main frame in the default smooth amplitude frequency curve of each sound channel compare; Be that display waveform shows on display screen with the conversion of signals that receives again, automatically adjust correction signal of wave amplitude, frequency, formation of the sound wave that receives in the b process then by the DSP of main system of audio, make it consistent, and DSP is adjusted parameter preserve with default contrast waveform.Simultaneously, DSP can adjust parameter with waveform and preserve in the lump also doing an allocation optimum time of delay of each sound channel.At last, the optimal adjusting parameters that draws the preceding right side, the right side, back, a left side, back, centre position is respectively also preserved automatically; According to the sweet spot of determining in the said process, the parameter that it is good that main system of audio calls adjusted automatically is configured audio signal, has been optimum efficiency when guaranteeing audio signal output to each loud speaker.
Whether the utility model also can anti-phasely test the output of a preceding left side, preceding right signal, whether anti-phase to a left side, back, back right signal output, guarantee the correct of wiring when installing with prompting.Method of testing is to allow a preceding left side, preceding right two sound channels export the audio signal of 100Hz simultaneously, by the signal that the microphone input receives, delivers to CPU and handles, if just anti-phase 180 degree, then system's output information is reminded whether mistake of loudspeaker wiring.A left side, back, the right side, back export whether anti-phase method of testing is identical.
As previously discussed; the utility model is not limited to the foregoing description; described main system of audio predetermined waveform curve also can be the built-in sound field effect curve of DSP; it also can be the best hearing effect curve of manufacturer's recommended; those skilled in the art also can do numerous modifications and variations; under the spirit that does not break away from utility model, all in the claimed scope of the utility model.
Claims (3)
1, a kind of vehicle-mounted acoustics self-adaptive sound field adjusting device, comprise main system of audio and be connected loud speaker on the main system of audio, it is characterized in that, described main system of audio periphery is provided with microphone, be provided with master cpu in the main system of audio, the A/D change-over circuit, the waveform comparison circuit, the DSP treatment circuit, sound wave produces circuit and D/A change-over circuit, waveform comparison circuit and DSP treatment circuit interconnect and are arranged between A/D change-over circuit and the D/A change-over circuit, the output of D/A change-over circuit is provided with power amplification circuit, power amplification circuit links to each other with loud speaker, the DSP circuit connects master cpu, the external display of this master cpu.
2, a kind of vehicle-mounted acoustics self-adaptive sound field adjusting device according to claim 1, described microphone are arranged on the position of the anthropomorphic ear of intermediate die at seat, and are connected with the audio input end of main system of audio by cable.
3, a kind of vehicle-mounted acoustics self-adaptive sound field adjusting device according to claim 1 is preset with the contrast waveform of frequency in 20HZ～20kHZ scope in the described main system of audio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200583852U CN201114734Y (en) | 2007-10-17 | 2007-10-17 | An onboard sound self-adapted sound field adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200583852U CN201114734Y (en) | 2007-10-17 | 2007-10-17 | An onboard sound self-adapted sound field adjusting device |
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| Publication Number | Publication Date |
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| CN201114734Y true CN201114734Y (en) | 2008-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2007200583852U Expired - Fee Related CN201114734Y (en) | 2007-10-17 | 2007-10-17 | An onboard sound self-adapted sound field adjusting device |
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| CN (1) | CN201114734Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102740183A (en) * | 2012-06-29 | 2012-10-17 | 惠州市德赛西威汽车电子有限公司 | Method for enhancing sound effect of entire car |
| CN107231598A (en) * | 2017-06-21 | 2017-10-03 | 惠州Tcl移动通信有限公司 | A kind of adaptive audio adjustment method, system and mobile terminal |
| CN109691136A (en) * | 2016-09-08 | 2019-04-26 | 株式会社索思未来 | Audio signal processor |
-
2007
- 2007-10-17 CN CNU2007200583852U patent/CN201114734Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102740183A (en) * | 2012-06-29 | 2012-10-17 | 惠州市德赛西威汽车电子有限公司 | Method for enhancing sound effect of entire car |
| CN109691136A (en) * | 2016-09-08 | 2019-04-26 | 株式会社索思未来 | Audio signal processor |
| CN109691136B (en) * | 2016-09-08 | 2020-09-08 | 株式会社索思未来 | Audio signal processing apparatus |
| CN107231598A (en) * | 2017-06-21 | 2017-10-03 | 惠州Tcl移动通信有限公司 | A kind of adaptive audio adjustment method, system and mobile terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG HAOBANGSHOU ELECTRONICS TECHNOLOGY STOCK Free format text: FORMER OWNER: LU CANGUANG Effective date: 20100525 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 528100 NO.1 KOUAN AVENUE, XINAN TOWN, SANSHUI DISTRICT, FOSHAN CITY, GUANGDONG PROVINCE TO: 528100 DISTRICT C, XINAN INDUSTRIAL PARK, SANSHUI DISTRICT, FOSHAN CITY, GUANGDONG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20100525 Address after: 528100 C zone, southwest industry zone, Sanshui District, Guangdong, Foshan Patentee after: Coagent Electronic S & T Co., Ltd. Address before: 528100, No. 1, port Avenue, southwest town, Sanshui District, Guangdong, Foshan Patentee before: Lu Canguang |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080910 Termination date: 20151017 |
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| EXPY | Termination of patent right or utility model |