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| Presentation | 2009-06-25 10:45 Effects of spectral envelope representations on resynthesized speech quality Hayato Akagiri, Noboru Onishi (Wakayama Univ.), Masanori Morise (Ritsumeikan Univ.), Ryuichi Nisimura, Toshio Irino, Hideki Kawahara (Wakayama Univ.)  SP2009-34 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A speech analysis, modification and synthesis method TANDEM-STRAIGHT consists of two key components; a) temporally independent power spectral estimation for periodic signals: TAMDEM and b) F0 adaptive spectral smoothing based on consistent sampling theory. The second component employes two approximations for implementing its function. The first approximation is truncation of theoretically infinite number of compensating digital filter coefficients. The second approximation is to use $\log(1+x)$ instead of using $x$, because they are virtually similar provided $|x| \ll 1$ holds. This assures positivity of spectral envelope. This report investigates effects of these approximations by using subjective tests of resynthesized voiced sounds as well as objective tests based on spectral distance measure. The tests indicated that the resynthesized sounds by both method %legacy-STRAIGHT and TANDEM-STRAIGHT have equivalent quality of 40 to 50 Q value of MNRU, that is reasonably high. The test also indicated that the resynthesized sounds by legacy-STRAIGHT tend to have higher sound quality than those by TANDEM-STRAIGHT. These subjective results are consistent with the objective results based on the peak weighted spectral distance measure with frequency weighting, suggesting that there exists a room for further quality improvement of TANDEM-STRAIGHT. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Spectrum envelope / TANDEM-STRAIGHT / Speech analysis / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 109, no. 99, SP2009-34, pp. 63-68, June 2009. | |
| Paper # | SP2009-34 | |
| Date of Issue | 2009-06-17 (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 | SP2009-34 |
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| Conference Information | |
| Committee | SP |
| Conference Date | 2009-06-24 - 2009-06-25 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Clark Memorial Hall, Hokkaido Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | emotional speech, prosody, voice quality, speech production and perception, brain activity, etc. |
| Paper Information | |
| Registration To | SP |
| Conference Code | 2009-06-SP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Effects of spectral envelope representations on resynthesized speech quality |
| Sub Title (in English) | |
| Keyword(1) | Spectrum envelope |
| Keyword(2) | TANDEM-STRAIGHT |
| Keyword(3) | Speech analysis |
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| 1st Author's Name | Hayato Akagiri |
| 1st Author's Affiliation | Wakayama University (Wakayama Univ.) |
| 2nd Author's Name | Noboru Onishi |
| 2nd Author's Affiliation | Wakayama University (Wakayama Univ.) |
| 3rd Author's Name | Masanori Morise |
| 3rd Author's Affiliation | Ritsumeikan University (Ritsumeikan Univ.) |
| 4th Author's Name | Ryuichi Nisimura |
| 4th Author's Affiliation | Wakayama University (Wakayama Univ.) |
| 5th Author's Name | Toshio Irino |
| 5th Author's Affiliation | Wakayama University (Wakayama Univ.) |
| 6th Author's Name | Hideki Kawahara |
| 6th Author's Affiliation | Wakayama University (Wakayama Univ.) |
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| Speaker | Author-1 |
| Date Time | 2009-06-25 10:45:00 |
| Presentation Time | 30 minutes |
| Registration for | SP |
| Paper # | SP2009-34 |
| Volume (vol) | vol.109 |
| Number (no) | no.99 |
| Page | pp.63-68 |
| #Pages | 6 |
| Date of Issue | 2009-06-17 (SP) |
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