A New Technique of Echo Eliminating in VoIP

摘要

This article has analyzed the producing principle of echo at first. That is delay time is too long to transmit voice normally, even stop talking. So we must adopt the control of echo or the mechanism of realizing echo dispel in VoIP network. But because the echo source is more complicated, the detention of the echo route is very long, the style of delaying is various and it shakes greatly, thus it is more complicated to cause the treatment and eliminate of the echo. To this kind of situation, the article has proposed the following several methods of echoes dispel. Such as treatment of the surrounding environment, echo suppressing device and acoustics echo dispelling device. I estimate the echo traffic with the adaptive wave filter and follow the changing traffic through the adaptive algorithm.