CN2643585Y - Background noise canceller - Google Patents
Background noise canceller Download PDFInfo
- Publication number
- CN2643585Y CN2643585Y CN 03240838 CN03240838U CN2643585Y CN 2643585 Y CN2643585 Y CN 2643585Y CN 03240838 CN03240838 CN 03240838 CN 03240838 U CN03240838 U CN 03240838U CN 2643585 Y CN2643585 Y CN 2643585Y
- Authority
- CN
- China
- Prior art keywords
- noise
- voice communication
- earphone
- background noise
- connecting rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A background noise eliminator pertains to a voice communication device which overcomes the problem that the voice communication equipment of the prior art has noises, consisting of a combined microphone, a connecting rod, an earphone, a screened cable, a noise-eliminating module, and an output plug. The utility model is applicable to a mobile phone, an interphone, a wire telephone, a public telephone and a square performance transmitter, etc. No matter in a noisy automobile, or a thundery mining factory, using the technology can realize clear dialog and bring convenience to voice communication.
Description
One, technical field: the utility model relates to speech communication technical field, especially ground noise eliminator.
Two, background technology: existing voice call mode is to use the microphone received speech signal, carries out voice and amplifies, and adopts cable to carry or wireless transmission then, and the other side receives.No matter be to adopt cable to connect or wireless transmission, all have certain background noise, when background noise surpassed voice signal intensity, what the other side received was very big noise signal, rather than voice signal clearly.So background noise directly influences communication effect.
Three, summary of the invention: the purpose of this utility model provides ground noise eliminator, overcome the deficiency of original technology, the purpose of this utility model is to realize like this, it is by the combination microphone, connecting rod, earphone, shielded type cable, noise elimination module, output plug are formed by connecting, and the combination microphone is connected by connecting rod with earphone; One end of noise elimination module is connected with earphone by shielded type cable, and the other end is connected with output plug by shielded type cable.
During work, when carrying out the voice signal reception, the outside noise signal that two microphones of combination microphone receive is the basic unwanted signal that equates of size, and the voice signal that receives to be size differ the signal of great disparity especially, they are delivered to noise elimination module with cable simultaneously handle, noise signal is carried out additive operation in circuit, makes the noise signal of output almost nil, and the voice signal that two-way differs especially great disparity is in circuit behind the additive operation, output but be very strong voice signal.Carry out after the processing and amplifying this voice signal by cable again or be wirelessly transmitted to the other side, the other side receives is voice signal very clearly.
This device can use on mobile phone, intercom, telephone, public telephone, square performance microphone etc.No matter be on noisy automobile, still in factories and miness rumbling, use this ground noise eliminator just can clearly engage in the dialogue, offer convenience to speech communication.
Four, description of drawings: accompanying drawing 1 is the structural representation of ground noise eliminator.
Among the figure 1, combination microphone 2, connecting rod 3, earphone 4, shielded type cable 5, noise elimination module 6, output plug.
Accompanying drawing 2 is the noise elimination module structural representation: among the figure 1, microphone 5, noise elimination module.
Accompanying drawing 3 is a circuit block diagram: among the figure 5, noise elimination module 7, voice signal 8, voice signal 9, noise signal
Five, embodiment: in above accompanying drawing, combination microphone 1 is connected by connecting rod 2 with earphone 3; One end of noise elimination module 5 is connected with earphone 3 by shielded type cable 4, and the other end is connected with output plug 6 by shielded type cable 4.
Claims (1)
1, ground noise eliminator is formed by connecting by combination microphone (1), connecting rod (2), earphone (3), shielded type cable (4), noise elimination module (5), output plug (6), it is characterized in that: combination microphone (1) is connected by connecting rod (2) with earphone (3); Noise elimination module (5) one ends are connected with earphone (3) by shielded type cable (4), and its other end is connected with output plug (6) by shielded type cable (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03240838 CN2643585Y (en) | 2003-03-12 | 2003-03-12 | Background noise canceller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03240838 CN2643585Y (en) | 2003-03-12 | 2003-03-12 | Background noise canceller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2643585Y true CN2643585Y (en) | 2004-09-22 |
Family
ID=34292186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03240838 Expired - Fee Related CN2643585Y (en) | 2003-03-12 | 2003-03-12 | Background noise canceller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2643585Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103684725A (en) * | 2013-12-03 | 2014-03-26 | 深圳市华星光电技术有限公司 | Method for avoiding interference in pulse signal and terminal applicable thereto |
| WO2015135201A1 (en) * | 2014-03-14 | 2015-09-17 | 华为终端有限公司 | Dual-microphone earphone and noise reduction processing method for audio signal in call |
-
2003
- 2003-03-12 CN CN 03240838 patent/CN2643585Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103684725A (en) * | 2013-12-03 | 2014-03-26 | 深圳市华星光电技术有限公司 | Method for avoiding interference in pulse signal and terminal applicable thereto |
| WO2015135201A1 (en) * | 2014-03-14 | 2015-09-17 | 华为终端有限公司 | Dual-microphone earphone and noise reduction processing method for audio signal in call |
| CN105230042A (en) * | 2014-03-14 | 2016-01-06 | 华为终端有限公司 | The denoise processing method of two microphones earphone and call sound intermediate frequency signal |
| US9866947B2 (en) | 2014-03-14 | 2018-01-09 | Huawei Device Co., Ltd. | Dual-microphone headset and noise reduction processing method for audio signal in call |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |