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Echo cancellation method and related device

A technology of echo cancellation and sound, which is applied in the direction of two-way sound reinforcement telephone system, speech analysis, instruments, etc., and can solve problems such as inability to deal with delay and jitter

Inactive Publication Date: 2020-04-03
ZHEJIANG HUACHUANG VISION TECH CO LTD
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Problems solved by technology

[0003] This application provides an echo cancellation method and related devices to solve the delay jitter caused by different audio collection devices and different playback devices that cannot be handled in the prior art

Method used

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  • Echo cancellation method and related device
  • Echo cancellation method and related device

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Embodiment Construction

[0034] In order to enable those skilled in the art to better understand the technical solution of the present application, an echo cancellation method, device and storage medium provided by the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] In one embodiment, the voice communication of each terminal can be carried out in the network conference, and the deployment method of the network video conference can be as follows figure 1 shown. Wherein, two or more terminals can hold a meeting in the same meeting, and all parties in the meeting collect sound through the audio collection device, and play the sound through the playback device at the same time. After one of the terminals plays the sound of other terminals through the playback device, the audio collection device can collect the played sound again, so the collected sound obtained by the terminal contains the sounds of other termin...

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Abstract

The invention discloses an echo cancellation method and device and a storage medium. The method comprises the following steps: acquiring jitter time between echo cancellation acquisition and echo cancellation playing, time delay of a playing device and time delay of an audio acquisition device; determining a compensation time amount, wherein the compensation time amount is less than jitter time between echo cancellation acquisition and echo cancellation playing, and is greater than the sum of time delay of a playing device and time delay of an audio acquisition device; and taking the compensation time amount as a time difference to input the reference audio and the collected audio into an echo cancellation circuit so as to carry out echo cancellation processing on the collected audio. According to the echo cancellation method, time delay jitter caused by different audio acquisition devices and different playing devices is processed.

Description

technical field [0001] The present application relates to the technical field of sound processing, in particular to an echo cancellation method and related devices. Background technique [0002] In voice communication, the terminal can play the received voice message through the playback device in the terminal, and then the played voice is propagated and reflected by the environment, and will be collected by the audio collection device, thus forming an echo, or called an echo . Echoes can seriously interfere with speakers and must be eliminated. At present, the echo is mainly eliminated by an acoustic echo suppression method and an acoustic echo cancellation method. However, the existing acoustic echo cancellation methods cannot deal with the delay jitter caused by different audio acquisition devices and different playback devices. Contents of the invention [0003] The present application provides an echo cancellation method and related devices to solve the delay jitte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0208H04M9/08
CPCG10L21/0208H04M9/08G10L2021/02082
Inventor 廖焕柱杨国全曹亚曦王克彦
Owner ZHEJIANG HUACHUANG VISION TECH CO LTD
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