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An Acoustic Echo Canceller Using Subband Adaptive Filters
Responsible organisation
1996 (English)Conference paper (Refereed) Published
Abstract [en]

The use of hands-free communication in cars, computer applications and video-conferencing has created a demand for high-quality acoustic echo cancellation. In these applications have the acoustic channel typically a long impulse response in the order of 100ms. Typical lengths of adaptive FIR-filters can be 500-1500 taps. In order to reduce the complexity and also improve the convergence rate have subband processing schemes been suggested. This paper presents an implementation of a delayless subband adaptive filter. The study shows a possible suppression of about 30 dB and also a more rapid convergence than a fullband LMS-filter.

Place, publisher, year, edition, pages
Perth, 1996.
National Category
Signal Processing
URN: urn:nbn:se:bth-10098Local ID: diva2:838131
4th UK/Australian Symposium on DSP for Communication Systems
Available from: 2012-09-18 Created: 2000-03-15 Last updated: 2015-06-30Bibliographically approved

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Signal Processing

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