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Paper Abstract and Keywords
Presentation 2010-06-11 15:30
Relevant Frequency band for vocal tract length normalization based on spectral distance
Erika Okamoto, Yoshiki Asaka, Ryuichi Nisimura, Toshio Irino, Hideki Kawahara (Wakayama Univ.) EA2010-36
Abstract (in Japanese) (See Japanese page) 
(in English) Normalization of speaker dependent spectral differences is an important issue in speech applications, such as automatic speech recognition and high-quality voice morphing.Individual spectral differences are primarily dependent on vocal tract length differences.They are also dependent on glottal source signal and the shape of pyriform fossa.This article investigates effects of frequency range selection on spectral distance-based vocal tract length normalization (VTLN).It is based on an idea that the best VTLN performance can be attained by selecting frequency region where spectral differences are virtually exclusively determined by differences of vocal tract length.All combination of utterances spoken by 28 subjects were used to calculate estimates of their relative vocal tract lengths, which are used as the tentative ``true'' lengths to evaluates
deviation of each VTL ratio estimation based on spectral distances.The test results revealed that the best performance is yielded by selecting frequency region spanning from 400~Hz to 4000~Hz, using an integrated logarithmic spectral distance using outputs of MFCC filter bank and their frequency derivatives.
Keyword (in Japanese) (See Japanese page) 
(in English) vocal tract length / normalization / frequency band / spectral distance / / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 71, EA2010-36, pp. 83-88, June 2010.
Paper # EA2010-36 
Date of Issue 2010-06-03 (EA) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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reproduction		 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 EA  
Conference Date 2010-06-10 - 2010-06-11 
Place (in Japanese) (See Japanese page) 
Place (in English) Health Sci. Univ. of Hokkaido 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Engineering/Electro Acoustics, Musical Acoustics, Psychological and Physiological Acoustics, and Related Topics 
Paper Information
Registration To EA 
Conference Code 2010-06-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Relevant Frequency band for vocal tract length normalization based on spectral distance 
Sub Title (in English)  
Keyword(1) vocal tract length  
Keyword(2) normalization  
Keyword(3) frequency band  
Keyword(4) spectral distance  
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1st Author's Name Erika Okamoto  
1st Author's Affiliation Wakayama University (Wakayama Univ.)
2nd Author's Name Yoshiki Asaka  
2nd Author's Affiliation Wakayama University (Wakayama Univ.)
3rd Author's Name Ryuichi Nisimura  
3rd Author's Affiliation Wakayama University (Wakayama Univ.)
4th Author's Name Toshio Irino  
4th Author's Affiliation Wakayama University (Wakayama Univ.)
5th Author's Name Hideki Kawahara  
5th Author's Affiliation Wakayama University (Wakayama Univ.)
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Speaker Author-1 
Date Time 2010-06-11 15:30:00 
Presentation Time 30 minutes 
Registration for EA 
Paper # EA2010-36 
Volume (vol) vol.110 
Number (no) no.71 
Page pp.83-88 
#Pages 6 
Date of Issue 2010-06-03 (EA) 

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