| Presentation | 2001/1/18 Blind Separation Based on Unitary Transformation and Complex Hermite Moments : Application to Temporal and Spatial Mixture of Speech N NAKASAKO, H OGURA, H KURUUCHI, |
|---|---|
| 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. However, there are problems in case when observations have time differences between source signals and are affected by system (room etc.). This paper treats, especially, the mixed speech influenced by the time difference or acoustic system. The blind separations for real signals and for complex signals are summarized, both of which have been previously proposed. The mixed voices are first narrow-banded and standardized, and then blind separation is achieved in a frequency domain by maximizing the evaluation criterion composed of complex Hermite moments. Further, the uncertainly in the order of separated signals is overcome by using correlation coefficient between the temporal standard deviation of separarated signals, and that in the magnitude of separated signals is solved from the linear relation between the observed and separated signals. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | complex signals / complex Hermite polynomials / unitary matrix / blind separation / narrowband signals / temporally and spatially mixed signals |
| Paper # | US2000-87,EA2000-94 |
| Date of Issue |
| Conference Information | |
| Committee | US |
|---|---|
| Conference Date | 2001/1/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Ultrasonics (US) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Blind Separation Based on Unitary Transformation and Complex Hermite Moments : Application to Temporal and Spatial Mixture of Speech |
| Sub Title (in English) | |
| Keyword(1) | complex signals |
| Keyword(2) | complex Hermite polynomials |
| Keyword(3) | unitary matrix |
| Keyword(4) | blind separation |
| Keyword(5) | narrowband signals |
| Keyword(6) | temporally and spatially mixed signals |
| 1st Author's Name | N NAKASAKO |
| 1st Author's Affiliation | School of Biology-Oriented Sc. & Tech., Kinki Univ.() |
| 2nd Author's Name | H OGURA |
| 2nd Author's Affiliation | School of Biology-Oriented Sc. & Tech., Kinki Univ. |
| 3rd Author's Name | H KURUUCHI |
| 3rd Author's Affiliation | School of Biology-Oriented Sc. & Tech., Kinki Univ. |
| Date | 2001/1/18 |
| Paper # | US2000-87,EA2000-94 |
| Volume (vol) | vol.100 |
| Number (no) | 578 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |