| Presentation | 2012-11-08 Improvements of HMM-based Speech Synthesis Using Rich Context Models Shinnosuke TAKAMICHI, Tomoki TODA, Yoshinori SHIGA, Sakriani SAKTI, Graham NEUBIG, Satoshi NAKAMURA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In the traditional HMM-based speech synthesis, generated speech parameters tend to be excessively smoothed. To alleviate this problem, we have proposed a parameter generation method with rich context models in our previous work. This method improves speech quality while keeping the flexibility of HMM-based speech synthesis. However, synthetic speech still sounds muffled because the generated parameters strongly depend on over-smoothed initial parameters in iterative parameter generation procedure. In this paper, we propose an initialization method for generating less-smoothed initial parameters using context-clustered HMMs based on a large-sized decision tree. Experimental evaluations of the proposed method demonstrate that the proposed method yields significant improvements in the quality of synthetic speech. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | HMM-based speech synthesis / rich context model / parameter generation / tree-based context clustering |
| Paper # | SP2012-78 |
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| Conference Information | |
| Committee | SP |
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| Conference Date | 2012/11/1(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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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) | Improvements of HMM-based Speech Synthesis Using Rich Context Models |
| Sub Title (in English) | |
| Keyword(1) | HMM-based speech synthesis |
| Keyword(2) | rich context model |
| Keyword(3) | parameter generation |
| Keyword(4) | tree-based context clustering |
| 1st Author's Name | Shinnosuke TAKAMICHI |
| 1st Author's Affiliation | Nara Institute of Science and Technology() |
| 2nd Author's Name | Tomoki TODA |
| 2nd Author's Affiliation | Nara Institute of Science and Technology |
| 3rd Author's Name | Yoshinori SHIGA |
| 3rd Author's Affiliation | National Institute of Information and Communications Technology |
| 4th Author's Name | Sakriani SAKTI |
| 4th Author's Affiliation | Nara Institute of Science and Technology |
| 5th Author's Name | Graham NEUBIG |
| 5th Author's Affiliation | Nara Institute of Science and Technology |
| 6th Author's Name | Satoshi NAKAMURA |
| 6th Author's Affiliation | Nara Institute of Science and Technology |
| Date | 2012-11-08 |
| Paper # | SP2012-78 |
| Volume (vol) | vol.112 |
| Number (no) | 281 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |