How to handle echoes in software video conferencing

The most feared thing in video conferencing is the echo problem. Echo is the most common sound problem in remote video conferencing. In the debugging process of software video conferencing system, the discovery and elimination of echo is a topic that needs to be solved by system maintenance personnel.

How to handle echoes in software video conferencing

1. Echo cancellation and echo suppression

Echo cancellation is to estimate the characteristic parameters by analyzing the echo path, constructing the simulated echo channel by using the characteristic parameters of the echo path, simulating the echo generation process, and eliminating the inverse of the obtained analog echo signal and the received signal. The echo in the received signal. Echo suppression is the ability to eliminate echo in a speech channel.

2. Application of echo cancellation and echo suppression

Generally, for software video conferencing products, some echo cancellation mechanisms are used, or advanced adaptive algorithms are used to intelligently adjust parameters to ensure the best sound effects of the venue. Taking CX_engine video conferencing system of Zhongke Video as an example, the system uses echo cancellation technology in the design.