Stereophonic Acoustic Echo Canceler Based on Two-Filter Scheme

Authors:
Noriaki Murakoshi;Akinori Nishihara
Affiliations:
-;-
Venue:
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Year:
2007

Citing 3
Cited 0

Blind Model Selection for Automatic Speech Recognition in Reverberant Environments

Journal of VLSI Signal Processing Systems
Efficient fast stereo acoustic echo cancellation based on pairwise optimal weight realization technique

EURASIP Journal on Applied Signal Processing
A stereo echo canceler with correct echo-path identification basedon an input-sliding technique

IEEE Transactions on Signal Processing

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Abstract

This paper presents a novel stereophonic acoustic echo canceling scheme without preprocessing. To accurately estimate echo path keeping the high level of performance in echo erasing, this scheme uses two filters, of which one filter is utilized as a guideline which does not erases echo but helps updating of the other filter, which actually erases echo. In addition, we propose a new filter dividing technique to apply to the filter divide scheme, and utilize this as the guideline. Numerical examples demonstrate that the proposed scheme improves the convergence behavior compared to conventional methods both in system mismatch (i.e., normalized coefficients error) and Echo Return Loss Enhancement (ERLE).