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Paper data
Robust Fast Affine Projection Algorithm for Nonlinear Acoustic Echo Cancellation

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 523-526

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 Levinson-Durbin 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.

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