| Presentation | 2005/8/19 Speech Parameter Generation Algorithm Considering Global Variance for HMM-Based Speech Synthesis Tomoki TODA, Keiichi TOKUDA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper describes a novel parameter generation algorithm for the HMM-based speech synthesis. The conventional algorithm generates a trajectory of static features that maximizes an output probability of a parameter sequence consisting of the static and dynamic features from HMMs under an explicit constraint between the two features. The generated trajectory is often excessively smoothed due to the statistical processing. Using the over-smoothed trajectory causes muffled sounds. In order to alleviate the over-smoothing effect, we propose a generation algorithm considering not only the output probability used for the conventional method but also that of a global variance (GV) of the generated trajectory. The latter probability works as a penalty for a reduction of the variance of the generated trajectory. A result of a perceptual evaluation demonstrates that the proposed method causes large improvements of the naturalness of synthetic speech. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | HMM-based speech synthesis / parameter generation / over-smoothing / global variance / naturalness |
| Paper # | SP2005-52 |
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| Conference Information | |
| Committee | SP |
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| Conference Date | 2005/8/19(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Speech (SP) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Speech Parameter Generation Algorithm Considering Global Variance for HMM-Based Speech Synthesis |
| Sub Title (in English) | |
| Keyword(1) | HMM-based speech synthesis |
| Keyword(2) | parameter generation |
| Keyword(3) | over-smoothing |
| Keyword(4) | global variance |
| Keyword(5) | naturalness |
| 1st Author's Name | Tomoki TODA |
| 1st Author's Affiliation | Graduate School of Information Science, Nara Institute of Science and Technology() |
| 2nd Author's Name | Keiichi TOKUDA |
| 2nd Author's Affiliation | Graduate School of Engineering, Nagoya Institute of Technology |
| Date | 2005/8/19 |
| Paper # | SP2005-52 |
| Volume (vol) | vol.105 |
| Number (no) | 253 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |