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Paper Abstract and Keywords
Presentation 2011-12-19 15:45
Study on extraction of vocal part in music signal by using non-negative matrix algorithm
Yuta Yasui, Hideki Banno, Fumitada Itakura (Meijo Univ) NLC2011-43 SP2011-88
Abstract (in Japanese) (See Japanese page) 
(in English) This paper describes extraction methods of vocal signal in music signal which is a mixture of vocal signal and accompaniment signal by using non-negative matrix factorization. Non-negative matrix factorization (NMF) can factorize an input spectrogram into a finite number of basis vectors and its temporal activity information, because it represents similar spectral patterns appeared on the input spectrogram with a single basis vector. However, NMF is not suitable for extraction of vocal signal because factorization of vocal signal including temporal spectral fluctuation appeared in vibrato of singing voice into a finite number of basis vectors is quite difficult. To solve this problem, we propose a preprocessing method that removes the spectral fluctuation by using a linear frequency axis warping of the spectrum so that a fundamental frequency of vocal signal included in the input music signal aligns to a reference frequency. Then, NMF is applied to this preprocessed signal. We have performed evaluation by SNR of extracted vocal signal and extracted accompaniment signal, in comparison with the conventional method. As a result, it was found that the generated signals by the proposed method had lower quality and SNR. However, the proposed method obtained slight better results for some music signals.
Keyword (in Japanese) (See Japanese page) 
(in English) Non-negative Matrix Factorization / Sound source separation / Music signal / Vibrato / / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 365, SP2011-88, pp. 73-78, Dec. 2011.
Paper # SP2011-88 
Date of Issue 2011-12-12 (NLC, SP) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee SP NLC IPSJ-SLP  
Conference Date 2011-12-19 - 2011-12-20 
Place (in Japanese) (See Japanese page) 
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Paper Information
Registration To SP 
Conference Code 2011-12-SP-NLC-SLP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study on extraction of vocal part in music signal by using non-negative matrix algorithm 
Sub Title (in English)  
Keyword(1) Non-negative Matrix Factorization  
Keyword(2) Sound source separation  
Keyword(3) Music signal  
Keyword(4) Vibrato  
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1st Author's Name Yuta Yasui  
1st Author's Affiliation Graduate School of Meijo (Meijo Univ)
2nd Author's Name Hideki Banno  
2nd Author's Affiliation University of Meijo (Meijo Univ)
3rd Author's Name Fumitada Itakura  
3rd Author's Affiliation University of Meijo (Meijo Univ)
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Speaker Author-1 
Date Time 2011-12-19 15:45:00 
Presentation Time 90 minutes 
Registration for SP 
Paper # NLC2011-43, SP2011-88 
Volume (vol) vol.111 
Number (no) no.364(NLC), no.365(SP) 
Page pp.73-78 
#Pages
Date of Issue 2011-12-12 (NLC, SP) 


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