CN200976667Y - Bluetooth earphone having noise-eliminating function - Google Patents
Bluetooth earphone having noise-eliminating function Download PDFInfo
- Publication number
- CN200976667Y CN200976667Y CN 200620159757 CN200620159757U CN200976667Y CN 200976667 Y CN200976667 Y CN 200976667Y CN 200620159757 CN200620159757 CN 200620159757 CN 200620159757 U CN200620159757 U CN 200620159757U CN 200976667 Y CN200976667 Y CN 200976667Y
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- signal
- noise
- bluetooth earphone
- loud speaker
- pick
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Abstract
The utility model discloses a noise-free bluetooth headset, comprising a loudspeaker. The bluetooth headset also provides a signal reverse circuit and an adaptor. The adaptor and the signal reverse circuit are connected; the reverse circuit is connected with the loudspeaker. The adaptor can collect the current environmental noise and put reverse noise into earphone input, which can counteract environmental noise totally, therefore, the utility model can provide users indoor audio effect.
Description
Technical field
The utility model relates to a kind of earphone, specifically, relates to a kind of bluetooth earphone with the function of abating the noise.
Background technology
Bluetooth earphone is that Bluetooth technology is applied on the hands-free headsets, allows the user can exempt the connection of electric wire, and comfortable ground is easily conversation in every way.Since bluetooth earphone comes out, be the good tool that Mobile Commerce family promotes efficient always.Bluetooth transmission is divided into v1.1 and two kinds of specifications of v1.2 technically, also difference to some extent when being applied in bluetooth earphone.V1.2 not only more supports stereo audio, and performance is preferably also arranged on stability and effect, and can backward compatible v1.1 version.
Present mobile phone is bluetooth enable mostly, can receive calls like a cork by bluetooth earphone.But, be in the place of strong noise such as open air as the user, because interference of noise has reduced the result of use of user to earphone.
As shown in Figure 1, existing bluetooth earphone comprises signal input part, D/A switch circuit, loud speaker, normal signal enters bluetooth earphone through bluetooth, the signal of telecommunication sends to the D/A switch circuit, the D/A switch circuit changes this signal of telecommunication into the loud speaker discernible signal of telecommunication, loud speaker receives this signal of telecommunication and produces voice signal, and this voice signal is sent to signal adder.
But this signal adder also receives extraneous ambient noise simultaneously, and voice signal and the ambient noise that loud speaker is produced together is sent to people's ear at last, finished the transmission course of sound.In the transmission course of this sound, extraneous ambient noise has also entered people's ear simultaneously, and the voice signal that makes ambient noise produce loud speaker forms and disturbs, and has influenced normal sound quality.
The utility model content
The technical problem that the utility model solved provides a kind of bluetooth earphone with the function of abating the noise, and can effectively eliminate ambient noise, and the definition of sound is provided.
Have the bluetooth earphone of the function of abating the noise, comprise loud speaker, described bluetooth earphone also is provided with signal inversion circuit and pick-up, and described pick-up is connected with described signal inversion circuit, and described signal inversion circuit is connected with described loud speaker.
Preferably, described pick-up is arranged on the loud speaker next door of described bluetooth earphone.
The pick-up that is provided with on bluetooth earphone is responsible for collecting current ambient noise, sound input side at earphone, be the front end signalization negative circuit and the pick-up of loud speaker, in loud speaker, add anti-phase ambient noise signal, like this can be so that loud speaker sends the voice signal opposite with ambient noise, this voice signal is cancelled each other with ambient noise in signal adder, reach the purpose of eliminating ambient noise, make loud speaker that the voice signal interference-free of mobile phone is sent to people's ear, make the bluetooth earphone user can reach auditory effect in indoor use.
Description of drawings
Fig. 1 is the structured flowchart of bluetooth earphone of the prior art;
Fig. 2 is a structured flowchart of the present utility model.
Embodiment
With reference to the accompanying drawings, preferred embodiment of the present utility model is described in detail.
As shown in Figure 2, the bluetooth earphone with the function of abating the noise comprises loud speaker, D/A switch circuit, signal input part, pick-up, signal inversion circuit and signal adder.Pick-up is arranged on the next door of the loud speaker of bluetooth earphone, and this pick-up is connected with the signal inversion circuit, and the signal inversion circuit is connected with loud speaker.Signal input part is connected with the D/A switch circuit, and the D/A switch circuit is connected with loud speaker.
When bluetooth earphone receives the signal that mobile phone sends by signal input part after, become the discernible signal of loud speaker through the D/A switch circuit conversion, send to loud speaker, loud speaker produces voice signal, and this voice signal is sent to signal adder.
When loud speaker had the ambient noise input, pick-up changed the ambient noise of collecting into the signal of telecommunication, sends to the signal inversion circuit.The signal of telecommunication that the signal inversion circuit sends with reference to pick-up, generate one and the anti-phase signal of telecommunication of ambient noise signal, the signal of telecommunication that this is anti-phase sends to loud speaker, loud speaker is under this anti-phase signal of telecommunication effect, produce one and the anti-phase voice signal of noise signal, this voice signal sends to signal adder.
In signal adder, this anti-phase voice signal will be offset ambient noise signal.Like this,, eliminated ambient noise, made the user only hear the voice signal that mobile phone sends after signal adder enters the voice signal that the only remaining mobile phone of the voice signal of people's ear transmits.
Claims (2)
1, a kind of bluetooth earphone with the function of abating the noise, comprise loud speaker, it is characterized in that described bluetooth earphone also is provided with signal inversion circuit and pick-up, described pick-up is connected with described signal inversion circuit, and described signal inversion circuit is connected with described loud speaker.
2, the bluetooth earphone with the function of abating the noise according to claim 1 is characterized in that, described pick-up is arranged on the loud speaker next door of described bluetooth earphone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620159757 CN200976667Y (en) | 2006-11-29 | 2006-11-29 | Bluetooth earphone having noise-eliminating function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620159757 CN200976667Y (en) | 2006-11-29 | 2006-11-29 | Bluetooth earphone having noise-eliminating function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200976667Y true CN200976667Y (en) | 2007-11-14 |
Family
ID=38902946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620159757 Expired - Lifetime CN200976667Y (en) | 2006-11-29 | 2006-11-29 | Bluetooth earphone having noise-eliminating function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200976667Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101583059A (en) * | 2008-05-15 | 2009-11-18 | 欧力天工股份有限公司 | Noise-cancelling headphone |
| WO2011113341A1 (en) * | 2010-03-18 | 2011-09-22 | 华为终端有限公司 | Audio apparatus capable of noise reduction and mobile telephone capable of noise reduction |
| CN107517423A (en) * | 2017-10-23 | 2017-12-26 | 南昌科卓科技有限公司 | A kind of highly sensitive bluetooth earphone |
-
2006
- 2006-11-29 CN CN 200620159757 patent/CN200976667Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101583059A (en) * | 2008-05-15 | 2009-11-18 | 欧力天工股份有限公司 | Noise-cancelling headphone |
| CN101583059B (en) * | 2008-05-15 | 2014-01-01 | 欧力天工股份有限公司 | Noise-cancelling headphone |
| WO2011113341A1 (en) * | 2010-03-18 | 2011-09-22 | 华为终端有限公司 | Audio apparatus capable of noise reduction and mobile telephone capable of noise reduction |
| CN107517423A (en) * | 2017-10-23 | 2017-12-26 | 南昌科卓科技有限公司 | A kind of highly sensitive bluetooth earphone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071114 |
|
| EXPY | Termination of patent right or utility model |