Application of Several Adaptive Algorithms in Echo Elimination
WANG Bingyang
YANG Zhicheng
Abstract：According to the defects of the normalized least mean square(NLMS) algorithm when it is applied in the echo elimination ,the proportionate normalized least mean square(PNLMS ) algorithm ,the proportionate normalized least mean square(PNLMS + + ) algorithm ,the improved affine projection(APA) algorithm and the proportionate affine projection(PA‐PA) algorithm were introduced in this paper ,which were applied in the echo elimination .Firstly ,the derivations of formulas among these algorithms and the connections with each other were introduced .Then ,by setting the orders of FIR filters and different input signals ,the mean squared error and the coefficient error curve could be get by the simulation .The PNLMS al‐gorithm ,the PNLMS + + algorithm and the PAPA algorithm can be better applied in the echo cancellation ,which was veri‐fied by the comparison of the performance and the convergence speed of those algorithms .
Keywords：adaptive algorithmecho cancellationfilter
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 68-71 )