| Paper Abstract and Keywords |
| Presentation |
2005-01-27 14:30
Stable Learning and Low-Distortion Algorithm for Overdetermined Blind Separation of Temporally Correlated Signals
Tsuyoki Nishikawa, Hiroshi Saruwatari, Kiyohiro Shikano (NAIST) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
We propose a new algorithm with a stable learning and low-distortion based on overdetermined blind separation for the convolutive mixture of the speech. To improve the separation performance, we have proposed multistage independent component analysis (ICA), in which frequency-domain ICA and time-domain ICA (TDICA) are cascaded. For temporally correlated signals, we must use TDICA with a nonholonomic constraint to avoid the decorrelation effect. However, the stability cannot be guaranteed in the nonholonomic case. Also, in the holonomic case, the sound quality of the separated signal is distorted by the decorrelation effect. To solve the problem of the stability, we perform TDICA with the holonomic constraint. To avoid the distortions, we estimate the distortion components by the holonomic constraint and we compensate the sound qualities by using the estimated components. The stability of the proposed algorithm can be guaranteed by the holonomic constraint, and the proposed compensation work prevents the distortion. The experiments in a reverberant room reveal that the algorithm results in higher stability and higher separation performance compared to the conventional TDICA algorithm. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
hands-free / microphone array / blind source separation / independent component analysis / convolutive mixture / / / |
| Reference Info. |
IEICE Tech. Rep., vol. 104, no. 614, EA2004-120, pp. 19-24, Jan. 2005. |
| Paper # |
EA2004-120 |
| Date of Issue |
2005-01-20 (EA) |
| ISSN |
Print edition: ISSN 0913-5685 |
| Download PDF |
|
| Conference Information |
| Committee |
EA |
| Conference Date |
2005-01-27 - 2005-01-28 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Kansai Univ. |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Active Noise Control, Echo Canceler, Noise Canceler, etc. |
| Paper Information |
| Registration To |
EA |
| Conference Code |
2005-01-EA |
| Language |
English (Japanese title is available) |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Stable Learning and Low-Distortion Algorithm for Overdetermined Blind Separation of Temporally Correlated Signals |
| Sub Title (in English) |
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| Keyword(1) |
hands-free |
| Keyword(2) |
microphone array |
| Keyword(3) |
blind source separation |
| Keyword(4) |
independent component analysis |
| Keyword(5) |
convolutive mixture |
| Keyword(6) |
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| 1st Author's Name |
Tsuyoki Nishikawa |
| 1st Author's Affiliation |
Nara Institute of Science and Technology (NAIST) |
| 2nd Author's Name |
Hiroshi Saruwatari |
| 2nd Author's Affiliation |
Nara Institute of Science and Technology (NAIST) |
| 3rd Author's Name |
Kiyohiro Shikano |
| 3rd Author's Affiliation |
Nara Institute of Science and Technology (NAIST) |
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| Speaker |
Author-1 |
| Date Time |
2005-01-27 14:30:00 |
| Presentation Time |
30 minutes |
| Registration for |
EA |
| Paper # |
EA2004-120 |
| Volume (vol) |
vol.104 |
| Number (no) |
no.614 |
| Page |
pp.19-24 |
| #Pages |
6 |
| Date of Issue |
2005-01-20 (EA) |
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