A Modified Affine Project Algorithm for Acousctic Echo Cancellation

We are developed a modified version of affine projection algorithm for acoustic echo cancellation, which has moderate convergence speed and noiserobust characteristics. The proposed algorithm normalizes the update equation to reduce noise effect of affine projection algorithm, by adding the multiplication of estimation error power and projection order to auto-covariance matrix of input signal. The proposed algorithm has noise robust characteristics and good steady-state performance. We also present an analysis of the convergence behavior of proposed algorithm using a simple model for the input signal vector with the usual independence assumption.