Method of correlation-extreme parameter estimation of acoustic echoes in telecommunication audio exchange systems

The problems of correlation estimation delay in the channels of acoustic echo. The possible methods of solving the problem. The expressions for determining the accuracy of estimating the echo delay and damping in the presence of phase and amplitude distortions in the channel, including with regard to their continuous delay value distribution. A scheme of long-term parameter estimation algorithm echo. The results of simulation studies, confirming that the method of correlation and extreme long-term evaluation of parameters echo. Work is done according to implementation terms of the state task of Russian Federation No2.1228.2014K in scientific research.