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Acoustic Echo Cancellation Employing Delayless Subband Adaptive Filters
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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 these acoustic channel has 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 to improve the convergence rate, subband processing schemes have 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 compared to a fullband LMS-filter.

Place, publisher, year, edition, pages
Luleå: Luleå Univ. of Technology (Tekniska högsk.) , 1996.
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:bth-9920Local ID: oai:bth.se:forskinfo6E7327CF927C6BDDC12568A3002CAA41ISBN: 91-630-4455-2 (print)OAI: oai:DiVA.org:bth-9920DiVA: diva2:837906
Conference
Proceedings of the 1996 SNRV and NUTEK Conference on Radio Sciences and Telecommunications in Luleå and Kiruna June 3-6, 1996 / RVK 96
Available from: 2012-09-18 Created: 2000-03-15 Last updated: 2015-06-30Bibliographically approved

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fulltext(224 kB)29 downloads
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Dahl, MattiasClaesson, Ingvar
Signal Processing

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Total: 29 downloads
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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf