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| Presentation | 2014-11-14 09:25 A study for estimating the vocal-tract shape from speech spectrum using a sensitivity function Tokihiko Kaburagi (Kyushu Univ.)  SP2014-98 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | To determine vocal-tract shape from speech, this paper presents an inversion method for simultaneously estimating the cross-sectional area and length of the vocal tract from cepstral parameters. The vocal-tract shape is determined through an iterative procedure that gradually optimizes the parameter values to produce the target speech spectrum. The vocal-tract shape is updated using a sensitivity function that represents the change in formant frequency caused by a small perturbation of the vocal-tract shape. When combined with a perturbation relationship of speech spectrum parameters (i.e., cepstral parameters) and formants, our method effectively optimizes the vocal-tract shape. We quantitatively examined the accuracy using area function data for 10 English vowels. The numerical results showed that the average area error was 0.43 cm$^2$ and the average length error was 0.23 cm. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Acoustic sensitivity function / Speech spectrum / Cross-sectional area function / Inverse estimation / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 114, no. 303, SP2014-98, pp. 47-52, Nov. 2014. | |
| Paper # | SP2014-98 | |
| Date of Issue | 2014-11-06 (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 | SP2014-98 |
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| Conference Information | |
| Committee | SP |
| Conference Date | 2014-11-13 - 2014-11-14 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kyushu Univ. Chikushi Campus |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | SP |
| Conference Code | 2014-11-SP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A study for estimating the vocal-tract shape from speech spectrum using a sensitivity function |
| Sub Title (in English) | |
| Keyword(1) | Acoustic sensitivity function |
| Keyword(2) | Speech spectrum |
| Keyword(3) | Cross-sectional area function |
| Keyword(4) | Inverse estimation |
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| 1st Author's Name | Tokihiko Kaburagi |
| 1st Author's Affiliation | Kyushu University (Kyushu Univ.) |
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| Speaker | Author-1 |
| Date Time | 2014-11-14 09:25:00 |
| Presentation Time | 25 minutes |
| Registration for | SP |
| Paper # | SP2014-98 |
| Volume (vol) | vol.114 |
| Number (no) | no.303 |
| Page | pp.47-52 |
| #Pages | 6 |
| Date of Issue | 2014-11-06 (SP) |
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