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Stereophonic acoustic echo cancellation employing selective-tap adaptive algorithms

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2 Author(s)
A. W. H. Khong ; Dept. of Electr. & Electron. Eng., Imperial Coll. London, UK ; P. A. Naylor

Stereophonic acoustic echo cancellation has generated much interest in recent years due to the nonuniqueness and misalignment problems that are caused by the strong interchannel signal coherence. In this paper, we introduce a novel adaptive filtering approach to reduce interchannel coherence which is based on a selective-tap updating procedure. This tap-selection technique is then applied to the normalized least-mean-square, affine projection and recursive least squares algorithms for stereophonic acoustic echo cancellation. Simulation results for the proposed algorithms have shown a significant improvement in convergence rate compared with existing techniques.

Published in:

IEEE Transactions on Audio, Speech, and Language Processing  (Volume:14 ,  Issue: 3 )