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Echo cancellation method and terminal

An echo cancellation and terminal technology, which is used in speech analysis, telephone communication, instruments, etc., and can solve problems such as affecting call quality.

Active Publication Date: 2019-02-15
CHINANETCENT TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Due to the problem in the prior art that during the process of watching a video while talking, the background sound of the video is collected by the microphone and sent to the remote end, thereby affecting the quality of the call. The embodiment of the present application provides an echo cancellation method and terminal

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Embodiment approach

[0078] In a possible implementation manner, the terminal determines the similarity between the first-end audio data and each reference audio data in the buffer area, and determines the reference audio data with the highest similarity with the first-end audio data as the first-end audio The reference audio data to which the data corresponds.

[0079] In a specific implementation, a plurality of reference audio data is pre-buffered in the buffer area, and for each reference audio data, the first-end audio data and the reference audio data are input into the linear adaptive filter, and determined according to the convergence speed of the linear adaptive filter. The similarity between the first-end audio data and the reference audio data. After obtaining the similarity between the first-end audio data and each reference audio data, select a reference audio data with the highest similarity with the first-end audio data from the plurality of reference audio data cached in the buffer...

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Abstract

The embodiments of the application provide an echo cancellation method and a terminal, which relate to the technical field of real-time audio and video communication. The method includes the followingsteps: a terminal collects first-end audio data, wherein the first-end audio data includes the voice of a first-end user and the audio played by an audio playback device on the terminal; reference audio data corresponding to the first-end audio data is queried from a cache region, and the cache region caches audio data to be played on the audio playback device as reference audio data; the audio played by the audio playback device in the first-end audio data is eliminated by using the reference audio data, and corrected audio data is determined; and the corrected audio data is sent to a second-end user terminal. Because the audio played by the audio playback device in the first-end audio data is eliminated by using the reference audio data and the voice of the first-end user is retained, the interference of the audio played by the audio playback device to the voice of the first-end user is avoided, and the quality of communication between the first-end user and the second-end user is improved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of audio and video real-time communication, and in particular, to an echo cancellation method and terminal. Background technique [0002] With the improvement of bandwidth and terminal performance, a single audio and video call scene is a bit boring, which can no longer meet the needs of users. Therefore, on this basis, the application of "watching and chatting" is derived, that is, watching TV programs on the same terminal (such as a mobile phone or a TV) while talking; or when experiencing the game during the game, it also needs to involve voice collection. and play. However, the background sound produced by the TV program will be collected by the microphone together with the human voice and sent to the remote end, thus affecting the quality of the call; or, the back and forth collection of voices by different call ends during the game will generate unwanted echoes. The sound qualit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0208G10L21/02
CPCG10L21/02G10L21/0208G10L2021/02082H04M9/082G10L21/0216G10L21/0364G10L2021/02163H04M9/085
Inventor 林惠东陈郭皇寿孙磊
Owner CHINANETCENT TECH
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