A method and device for echo cancellation

Abstract

The embodiment of the invention provides an echo cancellation method and device. The method is applied to the depending on the Internet. The depending on the Internet comprises a depending-on-the-Internet server, a first video conference terminal and a second video conference terminal. The method comprises the steps of: determining a filter coefficient by the first video conference terminal; calculating fixed time delay between the first video conference terminal and the second video conference terminal; obtaining an initial data size of a reference data buffer area; according to the filter coefficient and the fixed time delay, regulating the initial data size to a target data size; receiving audio data sent by the depending-on-the-Internet server through a downlink communication link, wherein the audio data is collected by the second video conference terminal; and according to the target data size, executing echo cancellation operation for the audio data. The echo cancellation methodand device can meet the demand of the echo cancellation algorithm for event time synchronization of the audio data to achieve echo cancellation and improve the voice quality in the video conference.

Description

technical field [0001] The invention relates to the technical field of Internet of Things, in particular to an echo cancellation method and an echo cancellation device. Background technique [0002] Video conferencing refers to a form of meeting in which people at two or more locations conduct face-to-face conversations through communication devices and networks. Usually, when conducting video conferencing, it is necessary to use professional video conferencing equipment and set up a special video conferencing system. Using the video conferencing system, participants can hear the voices of other venues, see the images, actions and expressions of participants in other venues, and can also send electronic presentation content, so that the participants have an immersive feeling. [0003] At present, in order to improve the call quality of the video conference, the audio collected and played at various conference locations can be eliminated by an echo cancellation algorithm. H...

AI Technical Summary

Problems solved by technology

In this case, it will also cause serious problems of poor synchronization

The problem of poor timing synchronization of the audio stream makes it difficult to eliminate the echo, which seriously affects the quality of voice communication

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