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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  Online edition: ISSN 2432-6380
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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  
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Keyword(8)  
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
Date Time 2005-01-21 09:25:00 
Presentation Time 25 
Registration for SIP 
Paper # IEICE-SIP2004-111 
Volume (vol) IEICE-104 
Number (no) no.559 
Page pp.7-12 
#Pages IEICE-6 
Date of Issue IEICE-SIP-2005-01-14 


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