Self-adaptive communication echo cancellation method for voice communication

TL;DR: In this article, a self-adaptive communication echo cancellation method for voice communication is proposed, which mainly comprises the following steps: A, carrying out echo cancellation; b, carryingout tap weight vector updating: B1, calculating residual signal square sequence E2 (n); B2, calculating a weighted median residual error to obtain a weighted Median residual error sigma (n) at the current moment n; B3, calculating an estimated value to obtain an M estimated function value psi (n), and B4, calculating zero attraction vector to form zero attraction vectors F (

Abstract: The invention discloses a self-adaptive communication echo cancellation method for voice communication. The method mainly comprises the following steps: A, carrying out echo cancellation; b, carryingout tap weight vector updating: B1, calculating residual signal square sequence E2 (n); B2, calculating a weighted median residual error to obtain a weighted median residual error sigma (n) at the current moment n; B3, calculating an M estimated value to obtain an M estimated function value psi (n) of the residual error at the current moment n; B4, calculating a zero attraction vector to obtain azero attraction factor of a tap weight coefficient so as to form zero attraction vectors F (n) of n at the current moment; and B5, updating the tap weight vector of the filter, and introducing an M estimation function value and the zero attraction vector into an updating formula to obtain a tap weight vector W (n + 1) of the filter at the next moment n + 1; C, carrying out repeating. The method ishigh in convergence speed, low in steady-state error and good in anti-impact effect.