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Device and method for eliminating noise

A noise cancellation and background noise technology, applied in speech analysis, instruments, etc., can solve the problems of lack of noise reduction means, limited call quality, affecting the quality of calls, etc., to improve the quality of calls and eliminate background noise.

Inactive Publication Date: 2011-03-23
SHENZHEN FUTAIHONG PRECISION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most of the existing mobile communication terminals lack corresponding noise reduction means, and the call quality may be limited to a certain extent.
For example, when the external environment is extremely noisy and the background noise and the speaker's voice are mixed together, even if the speaker speaks loudly, it is difficult for the receiver to hear his voice clearly, thus affecting the quality of the call

Method used

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  • Device and method for eliminating noise
  • Device and method for eliminating noise
  • Device and method for eliminating noise

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Experimental program
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Embodiment Construction

[0011] The invention discloses a noise elimination device and method used in mobile communication terminals such as mobile phones.

[0012] see figure 1 , the noise elimination device 100 includes a signal pickup unit 10 , a switching unit 20 , a signal processing unit 30 and a signal adjustment unit 40 .

[0013] The signal pickup unit 10 includes a first microphone 12 and a second microphone 14 . Both the first microphone 12 and the second microphone 14 are existing omnidirectional microphones capable of receiving all audio signals within a certain distance within a 360-degree range around them. Wherein the first microphone 12 can be a microphone provided by the noise canceling device 100 itself, which is arranged at one end of the body of the noise canceling device 100; Microphone interface. When the environment is quiet, the caller can only use the first microphone 12 to talk and pick up the call voice signal; when the environment is noisy, the caller can use the second...

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Abstract

The invention provides a noise eliminating device which is applied to a mobile communication terminal. The noise eliminating device comprises a signal pick-up unit and a signal processing unit which are connected electrically, wherein the signal pick-up unit is used for picking up audio signals of background noise and mixed audio signals formed by the background noise and call voice signals; and the signal processing unit is used for receiving the two paths of audio signals and carrying out subtraction processing on the two paths of audio signals so as to eliminate the background noise. The invention also provides a noise eliminating method for the noise eliminating device. The noise eliminating device can be used for effectively eliminating the background noise.

Description

technical field [0001] The present invention relates to a noise elimination device and method, in particular to a noise elimination device and method for mobile communication terminals. Background technique [0002] With the increasing application of mobile communication terminals such as mobile phones, people's requirements for the performance of mobile communication terminals are also increasing, and the call quality is one of the important indicators to measure the performance of mobile phones. [0003] However, most of the existing mobile communication terminals lack corresponding noise reduction means, and the call quality may be limited to a certain extent. For example, when the external environment is extremely noisy and the background noise is mixed with the speaker's voice, even if the speaker speaks loudly, it is difficult for the receiver to hear his voice clearly, thus affecting the quality of the call. Contents of the invention [0004] In view of the above p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/02
Inventor 黄炎莹谢祥渊
Owner SHENZHEN FUTAIHONG PRECISION IND CO LTD