Paper data
Title:
Robust Fast Affine Projection Algorithm for Nonlinear Acoustic Echo Cancellation Author(s): Niemistö Riitta, Tampere University of Technology Mäkelä Tuomo, Tampere University of Technology Myllylä Ville, Nokia Research Center Page numbers in the proceedings: Volume I pp 523526 Session: Echo Cancellation and Speech Enhancement
Paper abstract
This paper introduces a robust affine projection algorithm for nonlinear acoustic echo cancellation using simplified Volterra filters. Numerically unstable step of affine projection algorithm, matrix inversion, is improved by approximating the symmetrical matrix with a Toeplitz matrix and applying LevinsonDurbin recursion. Furthermore, the adaptive filter weight update is simplified such that the complexity of the algorithm is comparable to the number of the filter parameters. The simulation results show a slightly better performance than that of the well known normalized LMS algorithm.
Paper
