| Presentation | 2006-04-21 A Feedback Approach and Its Learning Algorithm for Overcomplete Blind Source Separation Haruo KATOU, Kenji NAKAYAMA, Akihiro HIRANO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A feedback structure and its learning algorithm are proposed for overcomplete blind source separation, where the number of sources is larger than that of sensors. In the first phase, the signal sources are separated so as to satisfy the condition, under which one signal source is not included in different outputs. By setting the number of the sensors to be more than a half of the sources, at least one output includes a single source. This output is selected based on property of a single source. Furthermore, this output is fed back and cancelled from observed signals. The selected single source, information about a mixing process and histogram of the observations and the separated source are used for this cancellation. In the second phase, the same process is carried out by using the modified observations, in which the source, separated in the first phase, is cancelled. Like this, in the proposed method, the source separation is repeated by reducing the number of equivalent sources. Simulations using speech signals demonstrate usefulness of the proposed method compared to the conventional methods. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Signal source separation / Overcomplete / Feedback / Speech signal / Learning algorithm / Fundamental period / Histogram |
| Paper # | SIP2006-9,IE2006-9 |
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| Conference Information | |
| Committee | IE |
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| Conference Date | 2006/4/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Image Engineering (IE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Feedback Approach and Its Learning Algorithm for Overcomplete Blind Source Separation |
| Sub Title (in English) | |
| Keyword(1) | Signal source separation |
| Keyword(2) | Overcomplete |
| Keyword(3) | Feedback |
| Keyword(4) | Speech signal |
| Keyword(5) | Learning algorithm |
| Keyword(6) | Fundamental period |
| Keyword(7) | Histogram |
| 1st Author's Name | Haruo KATOU |
| 1st Author's Affiliation | Division of Electrical and Computer Engineering Graduate School of Natural Science and Technology, Kanazawa Univ.() |
| 2nd Author's Name | Kenji NAKAYAMA |
| 2nd Author's Affiliation | Division of Electrical Engineering and Computer Science Graduate School of Natural Science and Technology, Kanazawa Univ. |
| 3rd Author's Name | Akihiro HIRANO |
| 3rd Author's Affiliation | Division of Electrical Engineering and Computer Science Graduate School of Natural Science and Technology, Kanazawa Univ. |
| Date | 2006-04-21 |
| Paper # | SIP2006-9,IE2006-9 |
| Volume (vol) | vol.106 |
| Number (no) | 22 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |