| Paper Abstract and Keywords |
| Presentation |
2005-01-21 09:25
A Signal Distortion Control Learning Algorithm for Feed-forward Blind Source Separation
Akihide Horita, Kenji Nakayama, Akihiro Hirano, Yasuhiro Dejima (Kanazawa Univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
Source separation and signal distortion in three kinds of BSSs with convolutive mixture are analyzed. They include a feedforward BSS, trained in the time domain and in the frequency domain, and a feedback BSS, trained in the time domain. First, an evaluation measure of signal distortion is discussed. Second, conditions for source separation and distortion free are derived. Based on these conditions, source separation and signal distortion in the three kinds of BSSs are analyzed. The feedforward BSS has some degree of freedom in the separation block, and the output spectrum can be changed. However, the feedforward BSS, trained in the frequency domain, has masking effect on frequency response of the separation block, and signal distortion can be suppressed. The feedforward BSS, trained in the time domain, does not have any constraints on signal distortion free. The output signals are easily distorted. A new learning algorithm with a distortion free constraint is proposed. On the other hand, the feedback BSS can satisfy both source separation and distortion free simaltaneously. Finally, the results of theoretical analysis are confirmed through simulation using 2 speech sources and 2 sensors. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Blind source separation / Feedforward / Feedback / Frequency domain / Time domain / Signal distortion / / |
| Reference Info. |
IEICE Tech. Rep., vol. 104, no. 559, SIP2004-111, pp. 7-12, Jan. 2005. |
| Paper # |
SIP2004-111 |
| Date of Issue |
2005-01-14 (SIP) |
| ISSN |
Print edition: ISSN 0913-5685 |
| Download PDF |
|
| Conference Information |
| Committee |
SIP |
| Conference Date |
2005-01-20 - 2005-01-21 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Nagoya Institute of Technology |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Signal Processing, etc. |
| Paper Information |
| Registration To |
SIP |
| Conference Code |
2005-01-SIP |
| Language |
English (Japanese title is available) |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
A Signal Distortion Control Learning Algorithm for Feed-forward Blind Source Separation |
| Sub Title (in English) |
|
| Keyword(1) |
Blind source separation |
| Keyword(2) |
Feedforward |
| Keyword(3) |
Feedback |
| Keyword(4) |
Frequency domain |
| Keyword(5) |
Time domain |
| Keyword(6) |
Signal distortion |
| Keyword(7) |
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| Keyword(8) |
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| 1st Author's Name |
Akihide Horita |
| 1st Author's Affiliation |
Kanazawa University (Kanazawa Univ.) |
| 2nd Author's Name |
Kenji Nakayama |
| 2nd Author's Affiliation |
Kanazawa University (Kanazawa Univ.) |
| 3rd Author's Name |
Akihiro Hirano |
| 3rd Author's Affiliation |
Kanazawa University (Kanazawa Univ.) |
| 4th Author's Name |
Yasuhiro Dejima |
| 4th Author's Affiliation |
Kanazawa University (Kanazawa Univ.) |
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| Speaker |
Author-1 |
| Date Time |
2005-01-21 09:25:00 |
| Presentation Time |
25 minutes |
| Registration for |
SIP |
| Paper # |
SIP2004-111 |
| Volume (vol) |
vol.104 |
| Number (no) |
no.559 |
| Page |
pp.7-12 |
| #Pages |
6 |
| Date of Issue |
2005-01-14 (SIP) |