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Paper Abstract and Keywords
Presentation 2008-12-10 16:10
Physical Model of the Vocal Tract with Flexible Velum
Takayuki Arai, Kimi Tanaka (Sophia Univ.), Ryuta Kataoka (Showa Univ.) NLC2008-48 SP2008-103
Abstract (in Japanese) (See Japanese page) 
(in English) We developed a physical model of the human vocal tract with a flexible velum using gel-type material. In this model, while the velum and pharyngeal wall were made of the gel-type material, the rest of the vocal-tract model including the nasal cavity was made of acrylic materials. We simulated four patterns of velopharyngeal closure (the Coronal, Circular, Circular with Passavant's ridge, and Sagittal patterns), by raising the velum by means of a string attached to the velic portion while the posterior and lateral pharyngeal walls were pushed inward from the outside with acrylic bars. By continuously changing the degree of velopharyngeal closure while pulling the string, we confirmed the change of the degree of hypernasality of a speech signal produced from the model, and we confirmed acoustic evidences such as a pole-zero pair on its spectrum.
Keyword (in Japanese) (See Japanese page) 
(in English) Gel-type material / Velum / Vocal Tract / Physical Model / Velopharyngeal Coupling / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 338, SP2008-103, pp. 143-148, Dec. 2008.
Paper # SP2008-103 
Date of Issue 2008-12-02 (NLC, SP) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
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)
Download PDF NLC2008-48 SP2008-103

Conference Information
Committee SP NLC  
Conference Date 2008-12-09 - 2008-12-10 
Place (in Japanese) (See Japanese page) 
Place (in English) Waseda Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SP 
Conference Code 2008-12-SP-NLC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Physical Model of the Vocal Tract with Flexible Velum 
Sub Title (in English)  
Keyword(1) Gel-type material  
Keyword(2) Velum  
Keyword(3) Vocal Tract  
Keyword(4) Physical Model  
Keyword(5) Velopharyngeal Coupling  
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Keyword(7)  
Keyword(8)  
1st Author's Name Takayuki Arai  
1st Author's Affiliation Sophia University (Sophia Univ.)
2nd Author's Name Kimi Tanaka  
2nd Author's Affiliation Sophia University (Sophia Univ.)
3rd Author's Name Ryuta Kataoka  
3rd Author's Affiliation Showa University (Showa Univ.)
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Speaker Author-1 
Date Time 2008-12-10 16:10:00 
Presentation Time 110 minutes 
Registration for SP 
Paper # NLC2008-48, SP2008-103 
Volume (vol) vol.108 
Number (no) no.337(NLC), no.338(SP) 
Page pp.143-148 
#Pages 6 
Date of Issue 2008-12-02 (NLC, SP) 

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