An Improvement of the Two-Path Algorithm Transfer Logic for Acoustic Echo Cancellation
| Document type: | Journal Articles |
|---|---|
| Article type: | Original article |
| Peer reviewed: | Yes |
| Author(s): | Fredric Lindström, Christian Schüldt, Ingvar Claesson |
| Title: | An Improvement of the Two-Path Algorithm Transfer Logic for Acoustic Echo Cancellation |
| Journal: | IEEE Transactions on Audio, Speech, and Language Processing |
| Year: | 2007 |
| Volume: | 15 |
| Issue: | 4 |
| Pagination: | 1320-1326 |
| ISSN: | 1558-7916 |
| Publisher: | IEEE |
| URI/DOI: | 10.1109/TASL.2007.894519 |
| ISI number: | 000245909800018 |
| 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, icl@bth.se |
| Language: | English |
| Abstract: | Adaptive filters for echo cancellation generally need update control schemes to avoid divergence in case of significant disturbances. The two-path algorithm avoids the problem of unnecessary halting of the adaptive filter when the control scheme gives an erroneous output. Versions of this algorithm have previously been presented for echo cancellation. This paper presents a transfer logic which improves the convergence speed of the two-path algorithm for acoustic echo cancellation, while retaining the robustness. Results from simulations show an improved performance, and a fixed-point DSP implementation verifies the performance in real-time |
| Subject: | Signal Processing\General |
| Keywords: | acoustic echo cancellation, adaptive filtering, two-path, parallell filters, shadow filter, transfer logic |
