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Paper Abstract and Keywords
Presentation 2011-07-23 09:55
Constrained Spectrum Generation for Mixed Sound Analysis Based on Probabilistic Spectrum Envelope
Toru Nakashika, Tetsuya Takiguchi, Yasuo Ariki (Kobe Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) NMF (Non-negative matrix factorization) has been one of the most widely-used techniques for signal analysis in recent years. In particular, the supervised type of NMF is garnering much attention in source separation or signal analysis with respect to the analysis accuracy and speed. Because such methods require all the possible samples for the analysis, it is hard to build a practical analysis system. To analyze signals properly even when short of samples, we proposed a probabilistic approach called PSE (probabilistic spectrum envelope) so far, in which spectrum envelopes belonging to an auditory category are randomly generated, and the spectrum is used as a part of supervised basis matrix of NMF. However, this method has a difficulty in obtaining the optimum solution due to a lot of flexibility. In this paper, we propose a new PSE method with sparseness and density constraints which efficiently lead to the more appropriate solution.
Keyword (in Japanese) (See Japanese page) 
(in English) signal analysis / source separation / supervised-NMF / probabilistic spectrum envelope / Gaussian process / sparseness / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 153, SP2011-50, pp. 51-56, July 2011.
Paper # SP2011-50 
Date of Issue 2011-07-14 (SP) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380

Conference Information
Committee SP  
Conference Date 2011-07-21 - 2011-07-23 
Place (in Japanese) (See Japanese page) 
Place (in English) Jozankei Grand Hotel 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SP 
Conference Code 2011-07-SP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Constrained Spectrum Generation for Mixed Sound Analysis Based on Probabilistic Spectrum Envelope 
Sub Title (in English)  
Keyword(1) signal analysis  
Keyword(2) source separation  
Keyword(3) supervised-NMF  
Keyword(4) probabilistic spectrum envelope  
Keyword(5) Gaussian process  
Keyword(6) sparseness  
1st Author's Name Toru Nakashika  
1st Author's Affiliation Kobe University (Kobe Univ.)
2nd Author's Name Tetsuya Takiguchi  
2nd Author's Affiliation Kobe University (Kobe Univ.)
3rd Author's Name Yasuo Ariki  
3rd Author's Affiliation Kobe University (Kobe Univ.)
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Date Time 2011-07-23 09:55:00 
Presentation Time 25 
Registration for SP 
Paper # IEICE-SP2011-50 
Volume (vol) IEICE-111 
Number (no) no.153 
Page pp.51-56 
#Pages IEICE-6 
Date of Issue IEICE-SP-2011-07-14 

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