Paper Abstract and Keywords |
Presentation |
Improving accuracy in spectral envelope estimation based on TANDEM-STRAIGHT
-- Recovery of higher spatial frequency components exceeding Nyquist limit posed by the fundamental frequency -- Hideki Kawahara (Wakayama Univ.), Masanori Morise (Kwansei Univ.), Toru Takahashi (Kyoto Univ.), Hideki Banno (Meijo Univ.), Ryuichi Nisimura, Toshio Irino (Wakayama Univ.) SP2008-23 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
A simple new method to recover details in a spectral envelope is proposed based on a speech analysis, modification and resynthesis framework called TANDEM-STRAIGHT. Spectral envelope recovery of voiced sounds is a discrete-to-analog conversion in the frequency domain. However, there is a fundamental problem because the spatial frequency contents of vocal tract functions generally exceed the Nyquist limit of the equivalent sampling rate determined by the fundamental frequency. TANDEM-STRAIGHT yields a method to recover a spectral envelope based on the consistent sampling theory and provides base information for exceeding this limit. At the final stage, the AR spectral envelope estimated from the TANDEM-STRAIGHT spectrum is divided by the F0 adaptively smoothed version of itself to supply the missing high-spatial-frequency details of the envelope. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
speech analysis / sampling theory / speech modification / / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 108, no. 116, SP2008-23, pp. 19-24, June 2008. |
Paper # |
SP2008-23 |
Date of Issue |
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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) |
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SP2008-23 |
Conference Information |
Committee |
SP |
Conference Date |
2008-06-27 - 2008-06-28 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
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Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Speech Production, Speech Perception, Hearing and Speech, etc. |
Paper Information |
Registration To |
SP |
Conference Code |
2008-06-SP |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Improving accuracy in spectral envelope estimation based on TANDEM-STRAIGHT |
Sub Title (in English) |
Recovery of higher spatial frequency components exceeding Nyquist limit posed by the fundamental frequency |
Keyword(1) |
speech analysis |
Keyword(2) |
sampling theory |
Keyword(3) |
speech modification |
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1st Author's Name |
Hideki Kawahara |
1st Author's Affiliation |
Wakayama University (Wakayama Univ.) |
2nd Author's Name |
Masanori Morise |
2nd Author's Affiliation |
Kwansei University (Kwansei Univ.) |
3rd Author's Name |
Toru Takahashi |
3rd Author's Affiliation |
Kyoto University (Kyoto Univ.) |
4th Author's Name |
Hideki Banno |
4th Author's Affiliation |
Meijo University (Meijo Univ.) |
5th Author's Name |
Ryuichi Nisimura |
5th Author's Affiliation |
Wakayama University (Wakayama Univ.) |
6th Author's Name |
Toshio Irino |
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Wakayama University (Wakayama Univ.) |
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Date Time |
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Presentation Time |
minutes |
Registration for |
SP |
Paper # |
SP2008-23 |
Volume (vol) |
vol.108 |
Number (no) |
no.116 |
Page |
pp.19-24 |
#Pages |
6 |
Date of Issue |
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