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| Presentation | 2014-05-25 11:30 Speech waveform generation on subband domain Nobuyuki Nishizawa, Tsuneo Kato (KDDI R&D Labs)  SP2014-35 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | To reduce the computational cost for waveform generation in speech synthesis based on analysis-synthesis systems like HMM-based speech synthesizers, a method based on the subband coding, which is also used in MPEG Audio, is introduced. In the method, signal processing is performed on the subband domain rather than the time domain. Although the HMM-based speech synthesis can generate relatively high quality sound in a small footprint, the computational cost for the waveform generation process is higher than that of the conventional concatenative speech synthesis directly using waveform segments. Since a low amount of computations is often required in small systems such as embedded systems, we proposed the subband-coding-based method to reduce the computational cost in our former studies. In the method, speech waveforms are generated by combining sinusoids and band-decomposed white noises. Because subband code vectors for such waveforms result in sparse vectors, the computational cost can be reduced by processing on the subband domain even where the cost for decoding of the subband code vectors is taken into account. Moreover, a method for the computation of spectral convolutions from melcepstra using a fast discrete cosine transformation algorithm is also introduced. It would be required in HMM-based speech synthesizers with the proposed waveform generation method in practice. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | HMM-based speech synthesis / speech waveform generation / filter bank / subband coding / embedded systems / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 114, no. 52, SP2014-35, pp. 349-354, May 2014. | |
| Paper # | SP2014-35 | |
| Date of Issue | 2014-05-17 (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 | SP2014-35 |
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| Conference Information | |
| Committee | SP IPSJ-MUS |
| Conference Date | 2014-05-24 - 2014-05-25 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | SP |
| Conference Code | 2014-05-SP-MUS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Speech waveform generation on subband domain |
| Sub Title (in English) | |
| Keyword(1) | HMM-based speech synthesis |
| Keyword(2) | speech waveform generation |
| Keyword(3) | filter bank |
| Keyword(4) | subband coding |
| Keyword(5) | embedded systems |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Nobuyuki Nishizawa |
| 1st Author's Affiliation | KDDI R&D Laboratories, Inc. (KDDI R&D Labs) |
| 2nd Author's Name | Tsuneo Kato |
| 2nd Author's Affiliation | KDDI R&D Laboratories, Inc. (KDDI R&D Labs) |
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| Speaker | Author-1 |
| Date Time | 2014-05-25 11:30:00 |
| Presentation Time | 240 minutes |
| Registration for | SP |
| Paper # | SP2014-35 |
| Volume (vol) | vol.114 |
| Number (no) | no.52 |
| Page | pp.349-354 |
| #Pages | 6 |
| Date of Issue | 2014-05-17 (SP) |
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