| Presentation | 2002/1/18 Comparison of Blind Source Separation Methods Based on Time-Domain ICA Using Nonstationarity and Multistage ICA Tsuyoki NISHIKAWA, Hiroshi SARUWATARI, Kiyohiro SHIKANO, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We propose a new algorithm for blind source separation (BSS), in which frequency-domain independent component analysis (FDICA) and time-domain ICA (TDICA) are combined to achieve a superior source-separation performance under reverberant conditions. Generally speaking, conventional TDICA fails to separate source signals under heavily reverberant conditions because of the low convergence in the iterative learning of the inverse of the mixing system. On the other hand, the separation performance of conventional FDICA also degrades significantly because the independence assumption of narrow-band signals collapses when the number of subbands increases. In the proposed method, the separated signals of FDICA are regarded as the input signals for TDICA, and we can remove the residual crosstalk components of FDICA by using TDICA. The experimental results obtained under the reverberant condition reveal that the separation performance of the proposed method is superior to those of TDICA-and FDICA-based BSS methods. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | blind source separation / time-domain independent component analysis / frequency-domain independent component analysis / reverberation / nonstationarity |
| Paper # | 2001-US-98,2001-EA-112 |
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| Conference Information | |
| Committee | EA |
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| Conference Date | 2002/1/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Engineering Acoustics (EA) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Comparison of Blind Source Separation Methods Based on Time-Domain ICA Using Nonstationarity and Multistage ICA |
| Sub Title (in English) | |
| Keyword(1) | blind source separation |
| Keyword(2) | time-domain independent component analysis |
| Keyword(3) | frequency-domain independent component analysis |
| Keyword(4) | reverberation |
| Keyword(5) | nonstationarity |
| 1st Author's Name | Tsuyoki NISHIKAWA |
| 1st Author's Affiliation | Graduate School of Information Science, Nara Institute of Science and Technology() |
| 2nd Author's Name | Hiroshi SARUWATARI |
| 2nd Author's Affiliation | Graduate School of Information Science, Nara Institute of Science and Technology |
| 3rd Author's Name | Kiyohiro SHIKANO |
| 3rd Author's Affiliation | Graduate School of Information Science, Nara Institute of Science and Technology |
| Date | 2002/1/18 |
| Paper # | 2001-US-98,2001-EA-112 |
| Volume (vol) | vol.101 |
| Number (no) | 598 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |