| Presentation | 1998/4/24 Speech Coding using STRAIGHT Speech Analysis/Synthesis Method Keisuke TOYAMA, Jinlin LU, Satoshi NAKAMURA, Kiyohiro SHIKANO, Hideki KAWAHARA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In recent years, Kawahara proposes a new VOCODER method, STRAIGHT(Speech Transformation and Representation using Adaptive Interpolation of weiGHTed spectrum), which can analyze and synthesize speech with very high quality. So, we try to apply STRAIGHT to speech coding. In this report, first, a MOS test of STRAIGHT and other speech coding algorithms is performed. Consequently, the quality of STRAIGHT is shown equal to 4bit ADPCM or 7bit μ-law PCM. Second, STRAIGHT parameters compress algorithms are discussed. We propose to use LSP(10 order)coefficients and LPC residual signal(20 point). By this method, STRAIGHT parameters are reduced to a ratio of 30/512. Moreover, the multi-split quantization of STRAIGHT parameters is discussed. By the MA prediction, LPC cepstrum distortion is improved by 0.15 dB respectively. Finally, we propose an 7.8kbps speech coding algorithm using the STRAIGHT method whose quality is better than 5bit μ-law PCM(40kbps). |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Speech Coding / STRAIGHT / LSP / Multi-Split VQ / MA prediction |
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| Conference Information | |
| Committee | SP |
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| Conference Date | 1998/4/24(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| 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 Coding using STRAIGHT Speech Analysis/Synthesis Method |
| Sub Title (in English) | |
| Keyword(1) | Speech Coding |
| Keyword(2) | STRAIGHT |
| Keyword(3) | LSP |
| Keyword(4) | Multi-Split VQ |
| Keyword(5) | MA prediction |
| 1st Author's Name | Keisuke TOYAMA |
| 1st Author's Affiliation | Nara Institute of Science and Technology() |
| 2nd Author's Name | Jinlin LU |
| 2nd Author's Affiliation | Nara Institute of Science and Technology |
| 3rd Author's Name | Satoshi NAKAMURA |
| 3rd Author's Affiliation | Nara Institute of Science and Technology |
| 4th Author's Name | Kiyohiro SHIKANO |
| 4th Author's Affiliation | Nara Institute of Science and Technology |
| 5th Author's Name | Hideki KAWAHARA |
| 5th Author's Affiliation | Wakayama University:ATR Human Information Processing Research Laboratories |
| Date | 1998/4/24 |
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| Volume (vol) | vol.98 |
| Number (no) | 33 |
| Page | pp.pp.- |
| #Pages | 6 |
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