| Presentation | 2000/1/27 A Fundamental Consideration on Signal Separation Taking into Account Delay Times at Observation Points Noboru Nakasako, Hisanao Ogura, Yasuhiro Takemoto, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recently, the problem of independent component analysis and / or blind signal separation becomes a very popular and emerging field of research, because the problem contains many potential applications, e.g., speech / image enhancement and / or recognition, noise reduction and so on.In such a problem, a priori information we can only utilize is the statistical independency between source signals.However, there must be a time delay in an actual sound field at each observation point.It was pointed out that the performance of separation becomes worse when the observation signals are composed of source signals with time delays.This paper describes practical trials of separating the overlapped signals on the basis of the statistical independency between source signals in a case when the source signals have time delays at each observation point.The estimated signals(corresponding to source signals)are separated from the observed signals by using the non-stationarity of source signals.Finally, the effectiveness of the proposed method is confirmed through computer simulation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Time delay / blind signal separation / statistical independency / non-stationarity / adaptive processing |
| Paper # | US99-84,EA99-98 |
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| Conference Information | |
| Committee | EA |
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| Conference Date | 2000/1/27(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) | A Fundamental Consideration on Signal Separation Taking into Account Delay Times at Observation Points |
| Sub Title (in English) | |
| Keyword(1) | Time delay |
| Keyword(2) | blind signal separation |
| Keyword(3) | statistical independency |
| Keyword(4) | non-stationarity |
| Keyword(5) | adaptive processing |
| 1st Author's Name | Noboru Nakasako |
| 1st Author's Affiliation | School of Biology-Oriented Sc.& Tech., Kinki Univ.() |
| 2nd Author's Name | Hisanao Ogura |
| 2nd Author's Affiliation | School of Biology-Oriented Sc.& Tech., Kinki Univ. |
| 3rd Author's Name | Yasuhiro Takemoto |
| 3rd Author's Affiliation | School of Biology-Oriented Sc.& Tech., Kinki Univ. |
| Date | 2000/1/27 |
| Paper # | US99-84,EA99-98 |
| Volume (vol) | vol.99 |
| Number (no) | 590 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |