| Presentation | 2010-12-21 Study on HMM-based F0 Coding for Very Low Bit-Rate Vocoder Takashi NOSE, Masashi KUMAMOTO, Takao KOBAYASHI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents a novel F0 coding technique for very low bit-rate HMM-based phonetic vocoder. Our technique is based on the multi-space distribution HMM (MSD-HMM) with quantized F0 symbols used as a prosodic context. By introducing the F0 symbol, we can model F0 values without using manually labeled speech data including accent information. In the encoding process, the F0 sequence extracted from an input utterance is converted into the quantized F0 symbol sequence, and these symbols are transmitted with the phonemes and state durations obtained by a phoneme recognizer. In the decoding process, context-dependent labels are created from the phonemes and F0 symbols, and the spectral and F0 sequences are generated using the pre-trained MSD-HMM on the basis of a maximum likelihood criterion. The experimental results show that the degradation of F0 quality through the coding process is not annoying even if the bit-rate for F0 is less than 50 bit/s. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | phonetic vocoder / HMM-based speech synthesis / very low bit-rate speech coding / quantized F0 context / multi-space distribution HMM (MSD-HMM) |
| Paper # | NLC2010-28,SP2010-101 |
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| Conference Information | |
| Committee | NLC |
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| Conference Date | 2010/12/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Natural Language Understanding and Models of Communication (NLC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study on HMM-based F0 Coding for Very Low Bit-Rate Vocoder |
| Sub Title (in English) | |
| Keyword(1) | phonetic vocoder |
| Keyword(2) | HMM-based speech synthesis |
| Keyword(3) | very low bit-rate speech coding |
| Keyword(4) | quantized F0 context |
| Keyword(5) | multi-space distribution HMM (MSD-HMM) |
| 1st Author's Name | Takashi NOSE |
| 1st Author's Affiliation | Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology() |
| 2nd Author's Name | Masashi KUMAMOTO |
| 2nd Author's Affiliation | Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology |
| 3rd Author's Name | Takao KOBAYASHI |
| 3rd Author's Affiliation | Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology |
| Date | 2010-12-21 |
| Paper # | NLC2010-28,SP2010-101 |
| Volume (vol) | vol.110 |
| Number (no) | 356 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |