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Echo cancellation method and device

A technology of echo cancellation and echo suppression, which is applied in speech analysis, television, instruments, etc., can solve problems such as poor echo cancellation effect, achieve the effect of ensuring effectiveness, ensuring voice quality, and improving efficiency

Pending Publication Date: 2020-09-01
ZHEJIANG HUACHUANG VISION TECH CO LTD
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Problems solved by technology

[0004] The embodiment of the present application provides an echo cancellation method and device to solve the technical problem of poor echo cancellation effect

Method used

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Embodiment Construction

[0055] In order to make the purpose, technical solutions and advantages of the application clearer, the technical solutions in the embodiments of the application will be clearly and completely described below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application. In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other. Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0056] The terms "first" and "second" in the specificatio...

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Abstract

The invention discloses an echo cancellation method and device, which are used for solving the technical problem of poor echo cancellation effect. The method comprises the steps that an echo cancellation device in the video conference system determines the distortion level of audio equipment in the video conference system, the audio equipment comprises playing equipment and collecting equipment, and the distortion level is used for representing the nonlinear distortion degree of audio data played by the playing equipment and collected by the collecting equipment; a target suppression level corresponding to the distortion level is determined, the target suppression level is used for representing the degree of nonlinear echo suppression processing on the audio data; and non-linear echo suppression processing is performed on the audio data acquired by the acquisition equipment through the target suppression level to obtain the audio data after the non-linear echo suppression processing.

Description

technical field [0001] The present application relates to the technical field of audio signal processing, and in particular to an echo cancellation method and device. Background technique [0002] In recent years, the development of the Internet has promoted the wide application of Internet telephony and video conferencing technology. At the same time, its language quality has also attracted increasing attention. One of the most critical factors is the influence of echo. Because the audio played by the far-end playback device (such as a speaker) will be picked up by the collection device (such as a microphone) and then sent back to the near-end, coupled with the impact of various delays, the near-end talker can hear his own echo, which is serious The quality of the call is affected, so the echo needs to be eliminated. [0003] The classic echo cancellation method is mainly divided into two parts: linear echo cancellation and nonlinear echo suppression. First, linear echo c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0208H04N7/15
CPCG10L21/0208H04N7/152G10L2021/02082
Inventor 廖焕柱杨国全曹亚曦王克彦
Owner ZHEJIANG HUACHUANG VISION TECH CO LTD
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