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Echo canceling method and device

An echo and echo cancellation technology, applied in the computer field, can solve problems such as increased echo of mobile terminals, poor call quality, falling of mobile terminals, etc., and achieve the effect of improving call quality

Active Publication Date: 2015-12-23
XIAOMI INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When the user is using the mobile terminal, the mobile terminal may fall, which will damage the sealing structure of the microphone, and the echo generated in the mobile terminal will also increase. In this way, the preset echo cancellation algorithm will not be able to eliminate echo, which can result in poor call quality

Method used

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  • Echo canceling method and device

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Embodiment Construction

[0054] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0055] An exemplary embodiment of the present invention provides a method for eliminating echo, such as figure 1 As shown, the processing flow of the method may include the following steps:

[0056] In step 101, a preset first voice signal is played through a local speaker, and a frequency response of each frequency point in the first voice signal detected by a local microphone is determined. ...

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Abstract

The invention provides an echo canceling method and device, and belongs to the technical field of computers. The echo canceling method comprises the steps: playing a preset first voice signal by a local speaker, and determining frequency response of each frequency point in the first voice signal detected by a local microphone; determining a corresponding to-be-used parameter value according to a corresponding relation of pre-stored frequency response of each frequency point and a parameter value of an echo canceling parameter, and the frequency response of each frequency point in the first voice signal detected by the local microphone; in a process of locally performing voice communication, performing an echo canceling operation on the voice signal detected by the local microphone in the voice communication process according to the to-be-used parameter value and a preset echo canceling algorithm. According to application of the echo canceling method and device, the voice quality can be improved.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to a method and device for eliminating echo. Background technique [0002] With the development of mobile terminal technology, the application of mobile terminals is becoming more and more extensive, and the functions are becoming more and more powerful. A loudspeaker and a microphone are usually provided in a mobile terminal, wherein the microphone is generally provided with a sealing structure to prevent the sound of the loudspeaker from passing into the microphone and generating an echo. [0003] In practice, due to poor production and assembly, the sealing structure of the microphone of the mobile terminal may be poorly sealed, and the sound played by the speaker will be transmitted into the microphone. In this way, the user uses the mobile terminal to communicate with other users. , the other party will hear his own echo. Therefore, technicians will set an echo cancellation...

Claims

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Application Information

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IPC IPC(8): H04M1/20
Inventor 文红向迪昀李晖
Owner XIAOMI INC
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