A hybrid acoustic echo canceller and suppressor
Blekinge Institute of Technology, School of Engineering, Department of Signal Processing2007 (English)In: Signal Processing, ISSN 0165-1684 , Vol. 87, no 4, 739-749 p.Article in journal (Refereed) Published
Wideband communication is becoming a desired feature in telephone conferencing systems. This paper proposes a computationally efficient echo suppression control algorithm to be used when increasing the bandwidth of an audio conferencing system, e.g. a conference telephone. The method presented in this paper gives a quality improvement, in the form of increased bandwidth, at a negligible extra computational cost. The increase in bandwidth is obtained through combining a conventional acoustic echo cancellation unit and an acoustic echo suppression unit, i.e. a hybrid echo canceller and suppressor. The proposed solution was implemented in a real-time system. Frequency analysis combined with subjective tests showed that the proposed method extends the bandwidth, while maintaining high quality.
Place, publisher, year, edition, pages
Elsevier , 2007. Vol. 87, no 4, 739-749 p.
Acoustic echo cancellation, AEC, Acoustic echo suppression, AES, Wideband, Hybrid
IdentifiersURN: urn:nbn:se:bth-9206ISI: 000242727800011Local ID: oai:bth.se:forskinfoCABCD305665F2CA8C125730F0028D258OAI: oai:DiVA.org:bth-9206DiVA: diva2:836984