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Acoustic echo canceller for teleconferencing systems using Levinson algorithm
Responsible organisation
2010 (English)Conference paper, (Refereed) Published
Abstract [en]

In teleconferencing systems, there are disturbing effects of acoustic echo which hinder the quality of the sound from the loudspeakers. This paper presents an optimization technique to attenuate the acoustic echoes generated due to coupling between the microphone and the loudspeaker. An optimal filter is designed based on a least squares technique. It uses Levinson algorithm to equalize the acoustic channel in an iterative manner by calculating the correlation coefficients needed for updating the iterations, in order to minimize the echo effect. The method calculates the optimal solution directly with less data recorded. The performance was validated and compared with adaptive filtering technique using a real time signal from a conference room

Place, publisher, year, edition, pages
Chennai: IEEE , 2010.
Keyword [en]
Acoustic echo cancellation(AEC), Loudspeaker, Teleconferencing
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:bth-7510DOI: 10.1109/INTERACT.2010.5706207Local ID: oai:bth.se:forskinfo9134147CC68F9105C12578BE00261C38ISBN: 978-142449006-6 (print)OAI: oai:DiVA.org:bth-7510DiVA: diva2:835134
Conference
International Conference on "Emerging Trends in Robotics and Communication Technologies
Available from: 2012-09-18 Created: 2011-06-29 Last updated: 2015-06-30Bibliographically approved

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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