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Acoustic Echo Cancellation Using MIMO Blind Deconvolution

A new multiple-input multiple-output frame-processing algorithm is introduced that exploits blind deconvolution for acoustic echo cancellation. The channel deconvolution filters, which can be blindly estimated as either finite impulse or infinite impulse responses, are optimized by maximizing the information flow through several non-linear neurons. The algorithm requires that for every system audio output there be a corresponding microphone for effective feedback signal separation/cancellation. The desired talker signal from the algorithm outputs is recognized and transmitted while the identified feedback signals are discarded.

Authors: Gower, Ephraim; Hawksford, Malcolm
Affiliation: University of Essex, Colchester, UK
AES Convention:126 (May 2009) Paper Number:7804 Import into BibTeX
Subject:Signal Processing

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