A hybrid acoustic echo canceller and suppressor
| Document type: | Journal Articles |
|---|---|
| Article type: | Original article |
| Peer reviewed: | Yes |
| Full text: | |
| Author(s): | Fredric Lindström, Christian Schüldt, Ingvar Claesson |
| Title: | A hybrid acoustic echo canceller and suppressor |
| Journal: | Signal Processing |
| Year: | 2007 |
| Volume: | 87 |
| Issue: | 4 |
| Pagination: | 739-749 |
| ISSN: | 0165-1684 |
| Publisher: | Elsevier |
| ISI number: | 000242727800011 |
| Organization: | Blekinge Institute of Technology |
| Department: | School of Engineering - Dept. of Signal Processing (Sektionen för teknik – avd. för signalbehandling) School of Engineering S- 372 25 Ronneby +46 455 38 50 00 http://www.tek.bth.se/ |
| Authors e-mail: | fli@bth.se, csc@bth.se |
| Language: | English |
| Abstract: | 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. |
| Subject: | Signal Processing\General |
| Keywords: | Acoustic echo cancellation, AEC, Acoustic echo suppression, AES, Wideband, Hybrid |
| Note: | doi:10.1016/j.sigpro.2006.07.006 |
