CN201805492U - A television device - Google Patents
A television device Download PDFInfo
- Publication number
- CN201805492U CN201805492U CN2010205679745U CN201020567974U CN201805492U CN 201805492 U CN201805492 U CN 201805492U CN 2010205679745 U CN2010205679745 U CN 2010205679745U CN 201020567974 U CN201020567974 U CN 201020567974U CN 201805492 U CN201805492 U CN 201805492U
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- China
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- audio signal
- audio
- noise
- television
- set device
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- Expired - Fee Related
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- 230000005236 sound signal Effects 0.000 claims abstract description 36
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 7
- 210000003284 Horns Anatomy 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
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Abstract
The utility model relates to a television device, which comprises a first audio signal amplifier for amplifying the audio signal of the television, and a horn for playing the audio signal. An array of microphones composed of over one microphone for collecting the noise around the television device, a second audio signal amplifier, an audio signal inverter, and an audio signal mixer. The electric signal outputted by the array of microphones is inputted into the audio signal inverter for inverting after being amplified by the second audio signal amplifier, then is mixed with the audio signal of the television in the audio signal mixer. The mixed electric signal is inputted into the first audio signal amplifier, then inputted to the horn. The utility model has the function of active audio noise lowering, and is capable of actively lowering the affection of the environmental noise to the audio effect of the television set, improving the listening effect of audio, lowering the cost, and is suitable for large-scale use.
Description
Technical field the utility model relates to a kind of TV set device, relates in particular to a kind of TV set device with active audio frequency decrease of noise functions.
The sound system of the existing TV set device of background technology can guarantee result of broadcast under the quiet situation of environment, but audio frequency effect descends greatly when environment is noisy.Along with development of electronic technology, this situation can not satisfy people's living needs.
The summary of the invention the purpose of this utility model is to provide a kind of TV set device, in the big environment of noise, improves audio frequency and listens to effect.
The utility model discloses a kind of TV set device, comprise the loudspeaker that are used to amplify first audio signal amplifier of television audio signals and broadcast audio signal; Also comprise that more than one microphone is formed, as to be used to collect described TV set device noise on every side microphone array, second audio signal amplifier, audio signal inverter and sound mixer; The signal of telecommunication of described microphone array output is input in the described audio signal inverter and does anti-phase processing, and then mix with described television audio signals in described sound mixer after amplifying through described second audio signal amplifier; The mixed signal of telecommunication inputs to described loudspeaker after importing described first audio signal amplifier amplification again.
The disclosed TV set device of the utility model, described microphone array comprise 4 to 24 high directivity microphones of back four side positions that are arranged at described TV set device.
Also comprise the decrease of noise functions switch, be used for opening or closing described high directivity microphone array.
The disclosed a kind of TV set device of the utility model, equipment high directivity microphone array, collect environmental noise, do again in the sound mixer after utilizing the audio signal inverter anti-phase and mix with television audio signals, can initiatively reduce the influence of environmental noise effectively to sound effect of TV set, improve audio frequency and listen to effect, with low cost, be fit to extensive the use.
Description of drawings
Fig. 1 is the schematic block circuit diagram of TV set device of the present utility model.
Embodiment is described in further detail the utility model below in conjunction with the drawings and specific embodiments.Specific embodiment described herein is not to qualification of the present utility model, but to explanation of the present utility model.
Tv audio active noise reduction operation principle of the present utility model is to place the high directivity microphone array respectively in the back of television set four sides, and quantity is by between 4-24.The left and right sides of the microphone array difference pointed at television machine of these high directivities and the display rear side of television set are used to collect environmental noise.
When the active noise reduction function of TV set device is opened, the high directivity microphone array is opened, receive the ambient noise on every side of TV set device, and noise is converted to the signal of telecommunication, after being exaggerated, this noise signal of telecommunication carries out anti-phase processing again, enter power amplifier then with after TV and audio signal mix, after amplifying, promote the loud speaker sounding.Because the noise signal phase place after the process that extraneous noise and loud speaker send is anti-phase is opposite, we can adjust to the height basically identical of the noise signal of noise signal after anti-phase and environment the parameters such as multiplication factor by the adjustment circuit.Because it is opposite in the sound of playing in the noise signal of television set environment of living in and the television set through the anti-phase noise signal phase place of handling the back amplification, size is equal substantially, so balance out greatly, the noise reduction degree can be accomplished 30-40dB substantially, has so greatly improved the voice frequency listening effect the when televiewer watches TV.Thereby finished decrease of noise functions.
Be illustrated in figure 1 as schematic block circuit diagram of the present utility model, comprise sound mixer, audio signal inverter and two audio signal amplifiers 1 and 2, and the loudspeaker that broadcast audio signal.Be arranged at TV set device the back around, the microphone array that is used to collect environmental noise converts environmental noise to the signal of telecommunication relevant with noise, after this signal of telecommunication relevant with noise amplifies through audio frequency amplifier 1, do anti-phase processing through the audio frequency inverter again, in sound mixer, mix then with television audio signals, output to audio frequency amplifier 2 then, the signal output after the amplification promotes the loudspeaker of television set.
Regulate the multiplication factor of audio frequency amplifier 1, the TV programme audio that makes the loudspeaker of television set broadcast can be distinguished in environmental noise effectively.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (3)
1. a TV set device comprises the loudspeaker that are used to amplify first audio signal amplifier of television audio signals and broadcast audio signal; It is characterized in that, also comprise that more than one microphone is formed, as to be used to collect described TV set device noise on every side microphone array, second audio signal amplifier, audio signal inverter and sound mixer; The signal of telecommunication of described microphone array output is input in the described audio signal inverter and does anti-phase processing, and then mix with described television audio signals in described sound mixer after amplifying through described second audio signal amplifier; The mixed signal of telecommunication inputs to described loudspeaker after importing described first audio signal amplifier amplification again.
2. TV set device as claimed in claim 1 is characterized in that, described microphone array comprises 4 to 24 high directivity microphones of back four side positions that are arranged at described TV set device.
3. TV set device as claimed in claim 2 is characterized in that, also comprises the decrease of noise functions switch, is used for opening or closing described high directivity microphone array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205679745U CN201805492U (en) | 2010-10-13 | 2010-10-13 | A television device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205679745U CN201805492U (en) | 2010-10-13 | 2010-10-13 | A television device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201805492U true CN201805492U (en) | 2011-04-20 |
Family
ID=43874991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205679745U Expired - Fee Related CN201805492U (en) | 2010-10-13 | 2010-10-13 | A television device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201805492U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104778866A (en) * | 2015-03-20 | 2015-07-15 | 四川长虹电器股份有限公司 | Teaching system based on television |
| CN105163050A (en) * | 2015-08-25 | 2015-12-16 | 青岛海信电器股份有限公司 | TV set |
| CN105635914A (en) * | 2016-02-26 | 2016-06-01 | 国家电网公司 | Active noise reduction device used for outdoor power transformation box |
| CN107665714A (en) * | 2016-07-28 | 2018-02-06 | 海信集团有限公司 | Projector equipment noise cancellation method, device and projector equipment |
-
2010
- 2010-10-13 CN CN2010205679745U patent/CN201805492U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104778866A (en) * | 2015-03-20 | 2015-07-15 | 四川长虹电器股份有限公司 | Teaching system based on television |
| CN105163050A (en) * | 2015-08-25 | 2015-12-16 | 青岛海信电器股份有限公司 | TV set |
| CN105163050B (en) * | 2015-08-25 | 2018-09-25 | 青岛海信电器股份有限公司 | A kind of television set |
| CN105635914A (en) * | 2016-02-26 | 2016-06-01 | 国家电网公司 | Active noise reduction device used for outdoor power transformation box |
| CN107665714A (en) * | 2016-07-28 | 2018-02-06 | 海信集团有限公司 | Projector equipment noise cancellation method, device and projector equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20161013 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |