Echo eliminating method, server, terminal and system

Abstract

An embodiment of the invention discloses an echo eliminating method, a server, a terminal and a system, wherein the echo eliminating method is applied to a server cluster and comprises the steps of supplying a detecting signal to one or a plurality of terminals; receiving an acquiring signal which is transmitted by one or the plurality of terminals, wherein the acquiring signal is an audio signalwhich is acquired by one or the plurality of terminals in playing the detecting signal by one or the plurality of terminals; and determining an echo characteristic parameter which corresponds with oneor the plurality of terminals based on the acquiring signal and the detecting signal, wherein the echo characteristic parameter is used for echo elimination of the terminal. The echo eliminating method, the server, the terminal and the system can continuously correct and restore the instable filter state, thereby effectively eliminating the echo.

Description

technical field [0001] The present application relates to the technical field of audio data processing, and in particular to an echo cancellation method, an echo cancellation server, an echo cancellation terminal, and an echo cancellation system. Background technique [0002] During a call, when the near-end device plays the voice signal sent by the far-end device, the microphone in the near-end device will collect the voice signal and send the voice signal to the far-end device, causing the user of the far-end device to hear The echo of the voice signal sent by oneself affects the quality of the call. Therefore, it is necessary to eliminate the echo during the call. [0003] In the existing echo cancellation technology, the fir linear filter is generally used for echo cancellation. However, in the traditional echo cancellation algorithm, echo will appear during the initial convergence period of the algorithm. At the same time, traditional algorithms have a certain limit on...

AI Technical Summary

Problems solved by technology

[0002] During a call, when the near-end device plays the voice signal sent by the far-end device, the microphone in the near-end device will collect the voice signal and send the voice signal to the far-end device, causing the user of the far-end device to hear The echo of the voice signal sent by oneself affects the quality of the call, so it is necessary to eliminate the echo during the call

[0003] In the existing echo cancellation technology, the fir linear filter is generally used for echo cancellation. However, in the traditional echo cancellation algorithm, there will be echoes during the initial algorithm convergence period.

At the same time, the traditional algorithm has a certain limit on the delay from playback to acquisition, and some accurate delay estimation algorithms cannot be detected on the terminal in a timely and accurate manner due to performance problems.

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