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Paper Abstract and Keywords
Presentation 2006-07-14 13:30
Multichannel Audio Signal Compressive Coding Method with Independent Component Analysis
Tadashi Mihashi, Tomoya Takatani, Shigeki Miyabe, Yoshimitsu Mori, Hiroshi Saruwatari, Kiyohiro Shikano (NAIST)
Abstract (in Japanese) (See Japanese page) 
(in English) In recent years, the use of multichannel audio contents is widely spreading. Consequently, the transmission quantity is increasing, and compression technology to reduce it is requested. A compression method exploiting the sparsness of sound source signals has a problem that it distorts the signals. It is because that there is no sparsness in the mixed signals consisting of two or more sound source signals. Therefore, we propose the method for audio signal compression using independent component analysis (ICA); ICA separates mixed signals into source signals, and clarifies sparsness among signals. Furthermore, we propose a mechanism to detect time-frequency grids where sparsness is not satisfied, and for the detected grids, we transmit multichannel signals to prevent the degradation. Experimental result shows that the proposed method can compress mixed audio signals with higher quality than conventional method.
Keyword (in Japanese) (See Japanese page) 
(in English) multichannel audio signal / compressive coding / blind source separation / independent component analysis / / / /  
Reference Info. IEICE Tech. Rep., vol. 106, no. 160, EA2006-28, pp. 21-26, July 2006.
Paper # EA2006-28 
Date of Issue 2006-07-07 (EA) 
ISSN Print edition: ISSN 0913-5685
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Conference Information
Committee EA  
Conference Date 2006-07-14 - 2006-07-14 
Place (in Japanese) (See Japanese page) 
Place (in English) Pioneer Corporate Research and Development Laboratories 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Sound Field Reproduction, Musical Acoustics, General 
Paper Information
Registration To EA 
Conference Code 2006-07-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Multichannel Audio Signal Compressive Coding Method with Independent Component Analysis 
Sub Title (in English)  
Keyword(1) multichannel audio signal  
Keyword(2) compressive coding  
Keyword(3) blind source separation  
Keyword(4) independent component analysis  
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1st Author's Name Tadashi Mihashi  
1st Author's Affiliation NARA INSTITUTE of SCIENCE and TECHNOLOGY (NAIST)
2nd Author's Name Tomoya Takatani  
2nd Author's Affiliation NARA INSTITUTE of SCIENCE and TECHNOLOGY (NAIST)
3rd Author's Name Shigeki Miyabe  
3rd Author's Affiliation NARA INSTITUTE of SCIENCE and TECHNOLOGY (NAIST)
4th Author's Name Yoshimitsu Mori  
4th Author's Affiliation NARA INSTITUTE of SCIENCE and TECHNOLOGY (NAIST)
5th Author's Name Hiroshi Saruwatari  
5th Author's Affiliation NARA INSTITUTE of SCIENCE and TECHNOLOGY (NAIST)
6th Author's Name Kiyohiro Shikano  
6th Author's Affiliation NARA INSTITUTE of SCIENCE and TECHNOLOGY (NAIST)
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Speaker Author-1 
Date Time 2006-07-14 13:30:00 
Presentation Time 30 minutes 
Registration for EA 
Paper # EA2006-28 
Volume (vol) vol.106 
Number (no) no.160 
Page pp.21-26 
#Pages 6 
Date of Issue 2006-07-07 (EA) 

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