CN202444610U - Adaptive-adjustment sound control system - Google Patents
Adaptive-adjustment sound control system Download PDFInfo
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- CN202444610U CN202444610U CN2012200921811U CN201220092181U CN202444610U CN 202444610 U CN202444610 U CN 202444610U CN 2012200921811 U CN2012200921811 U CN 2012200921811U CN 201220092181 U CN201220092181 U CN 201220092181U CN 202444610 U CN202444610 U CN 202444610U
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- sound
- noise cancellation
- adaptive
- converter
- cancellation system
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Abstract
An adaptive-adjustment sound control system comprises a primary sensor. The primary sensor is connected with an adaptive noise cancellation system through a first A/D (analog/digital) converter, the adaptive noise cancellation system is connected with a secondary sensor through a second A/D converter, a digital-to-analog conversion end of the adaptive noise cancellation system is connected with a sound superimposed circuit through a D/A converter, and the sound superimposed circuit is connected with a loudspeaker. Wanted signals sent out by a signal source are acquired by the primary sensor, and the secondary sensor acquires noise signals. The wanted signals and the noise signals are subjected to analog-to-digital conversion through the A/D converters and then inputted into the adaptive noise cancellation system for denoising processing, so that sound quality can be improved. The processed signals are subjected to D/A conversion to be converted into analog signals. Sound volume adjustment is completed by the sound superimposed circuit, and sound is outputted after being adjusted to a level suitable for being received by human ears comfortably. The adaptive-adjustment sound control system has the advantages of high intelligence degree and convenience to use.
Description
Technical field
The utility model belongs to the sound regulation technical field, is specifically related to the sound regulation system that a kind of self adaptation is regulated.
Background technology
At present, continue in scientific and technological level on the basis of rapid development, the electronic product of various superior performances, plant equipment have all obtained the development of becoming better and better.But as a part very important in the daily life, the sound regulation system still mainly rests on manual or the remote control regulation and control level.Sound regulation system manual or remote control control is inconvenient many times; As in dining room etc. on a large scale in the space; Television sound volume is mostly on a set level that has mixed up; Seldom can take into account guest's sense of reality and regulate, thus occur surrounding environment noisy, can't not hear sound of television or sound of television is excessive, influence phenomenons such as normally having a dinner of client; In automobile, as the driver or the passenger wants to listen to the radio, when sound of television or MP3 music, usually need manually carry out volume and regulate, this has all constituted a kind of threat to passengers inside the car's life security to a great extent, is badly in need of improving.
Summary of the invention
In order to overcome the deficiency of above-mentioned prior art; The sound regulation system that the purpose of the utility model has been to provide a kind of self adaptation to regulate; Do not need external artificial volume is controlled just and can the sound quality and the size adjustment of output be accepted within the scope to suitable people's ear; Be particularly suitable for having no time to attend in sound regulation or the artificial inconvenient place that sound is controlled and use, have high, the easy to use characteristics of intelligent degree.
To achieve these goals; The technical scheme that the utility model adopts is: the sound regulation system that a kind of self adaptation is regulated; Include primary sensor, primary sensor links to each other with the adaptive noise cancellation system through first A/D converter, and the adaptive noise cancellation system is connected with secondary transducers through second A/D converter; The digital-to-analogue conversion end of adaptive noise cancellation system links to each other with sound overlaying circuit through D/A converter, and sound overlaying circuit links to each other with loud speaker.
The useful signal end of described adaptive noise cancellation system links to each other with the input of accumulator, and its noise signal end links to each other with the input of sef-adapting filter, and the output of sef-adapting filter links to each other with the input of accumulator.
The beneficial effect of the utility model is:
The sound regulation system that self adaptation is regulated is with the adaptive noise cancellation notion a kind of intelligentized sound regulation system that adjusting combines and forms with volume.This sound regulation system does not need external artificial volume is controlled just and can the sound quality and the size adjustment of output be accepted within the scope to suitable people's ear; Intelligent more, especially be fit to have no time to attend in sound regulation or the artificial inconvenient place that sound is controlled.
Adaptable System is the system that a kind of structure can change or adjust, and this change is through the character that contacts come improvement system self or the performance of system with external environment itself with adjusting.
The utility model is owing to be provided with primary sensor, secondary transducers; So useful signal, the noise signal collection that can signal source be sent; Owing to be provided with the adaptive noise cancellation system; Realize that sound quality improves and the characteristics of denoising so have,, can loud minor adjustment be received and comfortable degree to being fit to people's ear owing to be provided with the volume supercircuit.Have high, the easy to use characteristics of intelligent degree.
Description of drawings
Fig. 1 is the structured flowchart of the utility model.
Fig. 2 is the structured flowchart of the utility model adaptive noise cancellation system 3.
Embodiment
Below in conjunction with accompanying drawing the structural principle and the operation principle of the utility model are done further explain.
The sound regulation system that a kind of self adaptation is regulated; Include primary sensor 1; Primary sensor 1 links to each other with adaptive noise cancellation system 3 through first A/D converter 2; Adaptive noise cancellation system 3 is connected with secondary transducers 5 through second A/D converter 4, and the digital-to-analogue conversion end of adaptive noise cancellation system 3 links to each other with sound overlaying circuit 7 through D/A converter 6, and sound overlaying circuit 7 links to each other with loud speaker 8.
The useful signal end of described adaptive noise cancellation system 3 links to each other with the input of accumulator 11, and its noise signal end links to each other with the input of sef-adapting filter 12, and the output of sef-adapting filter 12 links to each other with the input of accumulator 11.
The operation principle of the utility model is:
In the transmission course of wanted sound signal, signal to be transmitted inevitably can receive The noise and interference in surrounding environment or the transmission channel, thereby makes voice signal that the recipient receives polluted by to a certain degree noise even swallow up fully.In order to make the distortion rate of signal in transmission course be reduced to minimum, convenient last reception can identify the content of signal easily, voice signal is carried out adaptive noise cancellation handle just become more and more important.So for better voice quality and the wave volume that is more suitable for people's ear are provided, the utility model has been incorporated into the adaptive noise cancellation technology in the sound regulation system of design.
The useful signal that signal source is sent like MP3 music signal etc., is gathered through primary sensor.Because in signals transmission, inevitably can receive interference of noise, so with placing noise source neighbouring and away from the another one secondary transducers acquisition noise signal of signal source; Accomplished after useful signal and the noise data collection work, considered that the follow-up filter that will use adopts numeric type, more so the two paths of signals that collects is carried out analog-to-digital conversion through A/D converter respectively; And then two paths of signals input adaptive noise cancellation system is carried out denoising handle, realize the raising of sound quality; Signal after finishing dealing with then must carry out the D/A digital-to-analogue conversion and become analog signal if will in channel, transmit; Accomplish the adjusting of wave volume afterwards again through the volume supercircuit, loud minor adjustment to suitable people's ear reception and let the people feel comfortable degree, is transferred to loud speaker at last and exports.
Two inputs of adaptive noise cancellation system are imported respectively by the useful signal s+ n0 of noise pollution and noise signal n, and n and n0 be because from same noise source, thus be relative to each other, but uncorrelated with s.N is filtered through sef-adapting filter, make its generation be approximately the duplicate output y of n0, and should export from original input s+ n0 and deduct, the generation system exports s+ n0-y.The coefficient of system's output feedback regulation sef-adapting filter is so that y more and more equals n0 then; Thereby make the output result constantly accurately approach useful signal s; After the adaptive noise cancellation system handles, noise content greatly reduces in the wanted sound signal like this, and definition has improved.Through follow-up volume stack, finally realized the intellectuality of voice quality and volume is regulated again.
Claims (2)
1. the sound regulation system that regulates of a self adaptation; Include primary sensor (1); It is characterized in that; Primary sensor (1) links to each other with adaptive noise cancellation system (3) through first A/D converter (2); Adaptive noise cancellation system (3) is connected with secondary transducers (5) through second A/D converter (4), and the digital-to-analogue conversion end of adaptive noise cancellation system (3) links to each other with sound overlaying circuit (7) through D/A converter (6), and sound overlaying circuit (7) links to each other with loud speaker (8).
2. the sound regulation system that a kind of self adaptation according to claim 1 is regulated; It is characterized in that; The useful signal end of described adaptive noise cancellation system (3) links to each other with the input of accumulator (11); Its noise signal end links to each other with the input of sef-adapting filter (12), and the output of sef-adapting filter (12) links to each other with the input of accumulator (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200921811U CN202444610U (en) | 2012-03-13 | 2012-03-13 | Adaptive-adjustment sound control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200921811U CN202444610U (en) | 2012-03-13 | 2012-03-13 | Adaptive-adjustment sound control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202444610U true CN202444610U (en) | 2012-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200921811U Expired - Fee Related CN202444610U (en) | 2012-03-13 | 2012-03-13 | Adaptive-adjustment sound control system |
Country Status (1)
| Country | Link |
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| CN (1) | CN202444610U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869244A (en) * | 2016-03-31 | 2016-08-17 | 青岛歌尔声学科技有限公司 | Voice cipher unlocking method and cipher lock |
| CN110012391A (en) * | 2019-05-14 | 2019-07-12 | 临沂市中心医院 | A kind of operation consultation system and operating room audio collection method |
-
2012
- 2012-03-13 CN CN2012200921811U patent/CN202444610U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869244A (en) * | 2016-03-31 | 2016-08-17 | 青岛歌尔声学科技有限公司 | Voice cipher unlocking method and cipher lock |
| CN105869244B (en) * | 2016-03-31 | 2018-11-02 | 青岛歌尔声学科技有限公司 | A kind of sound password unlocking method and coded lock |
| CN110012391A (en) * | 2019-05-14 | 2019-07-12 | 临沂市中心医院 | A kind of operation consultation system and operating room audio collection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20130313 |