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Iterated partitioned block frequency-domain adaptive filtering for acoustic echo cancellation

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2 Author(s)
Eneman, K. ; Dept. of Electr. Eng., Katholieke Univ. Leuven, Heverlee, Belgium ; Moonen, M.

For high quality acoustic echo cancellation long echoes have to be suppressed. classical LMS-based adaptive filters are not attractive as they are suboptimal from a computational point of view. Multirate adaptive filters such as the partitioned block frequency-domain adaptive filter (PBFDAF) are good alternatives and are widely used in commercial echo cancellers nowadays. In this paper the PBFDRAP is analyzed, which combines frequency-domain adaptive filtering with so-called "row action projection." Fast versions of the algorithm are derived and it is shown that the PBFDRAP outperforms the PBFDAF in a realistic echo cancellation setup.

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Speech and Audio Processing, IEEE Transactions on  (Volume:11 ,  Issue: 2 )