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System identification for listening-room compensation by means of acoustic echo cancellation and acoustic echo suppression filters

By F.F. Xiong, J.-E. Appell and S. Goetze

Abstract

Subsystems for dereverberation and acoustic echo cancellation (AEC) / acoustic echo suppression (AES) are important components in high-quality hands-free telecommunication systems. This contribution describes and analyzes a combined system for dereverberation and AEC/AES. The system identification inherently achieved by the AEC/AES system is used for the design of the room impulse response (RIR) equalization filter, i.e. the listening-room compensation (LRC) system. We use complex RIR smoothing and decoupled filtered-X least-mean-squares (dFxLMS) gradient algorithm for LRC and a combined AEC/AES system for the system identification necessary for the LRC filter design. The performance of the combined system and the mutual influences of LRC and AEC/AES are analyzed

Year: 2012
DOI identifier: 10.1109/ICASSP.2012.6287932
OAI identifier: oai:fraunhofer.de:N-234598
Provided by: Fraunhofer-ePrints
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