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Alternating fixed-point algorithm for stereophonic acoustic echo cancellation

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3 Author(s)
Forsyth, N.T. ; Dept. of Electr. & Electron. Eng., Imperial Coll. of Sci., Technol. & Med., London, UK ; Chambers, J.A. ; Naylor, P.A.

A novel algorithm for use in stereophonic acoustic echo cancellation is introduced. The alternating fixed-point structure of the algorithm descends each of the channels alternatively and avoids nonuniqueness in the solutions by employing inter- and intra-channel orthogonal projections. For a noisy environment, the algorithm is shown to provide improved misalignment performance and echo cancellation over leading competitors at a low computational cost. The inherent noise robustness is uncovered using H estimation techniques and noise-error bounds are derived

Published in:

Vision, Image and Signal Processing, IEE Proceedings -  (Volume:149 ,  Issue: 1 )

Date of Publication:

Feb 2002

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