| Presentation | 1998/6/11 An Evaluation of Mel-LPC Analysis Method in Speech Recognition Yoshihisa Nakatoh, Hiroshi Matsumoto, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The linear prediction analysis on a mel- or bark-frequency scale proposed by Strube is expected to be effective in speech recognition as the MFCC or PLP analysis because of their auditory-like frequency resolution. However, this method has been rarely used speech recognition applications due to relatively high computational load compared to the standard LPC analysis. This paper proposes a simple and efficient time-domain technique (Mel-LPC analysis) to estimate warped predictors. This analysis is accomplished with about two-fold increase in computation over the standard LPC analysis. The recognition performance of mel-cepstral parameters obtained by the Mel-LPC analysis is compared with that of the conventional LPC mel-cepstra through speaker independent phoneme recognition. The results show that the Mel-LPC cepstrum leads to the improvement from 64.8% for the standard LPC mel-cepstrum to 73.4% in phoneme recognition accuracy, and the improvement from 92.7% for the standard LPC mel-cepstrum to 96.0% in word recognition accuracy (520 vocabulary word). |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Mel-LPC analysis / Speech recognition / Mel-cepstrum / Frequency warping |
| Paper # | SP98-22 |
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| Conference Information | |
| Committee | SP |
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| Conference Date | 1998/6/11(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) | An Evaluation of Mel-LPC Analysis Method in Speech Recognition |
| Sub Title (in English) | |
| Keyword(1) | Mel-LPC analysis |
| Keyword(2) | Speech recognition |
| Keyword(3) | Mel-cepstrum |
| Keyword(4) | Frequency warping |
| 1st Author's Name | Yoshihisa Nakatoh |
| 1st Author's Affiliation | Multimedia Development Center, Matsushita Electric Industrial Co., Ltd.() |
| 2nd Author's Name | Hiroshi Matsumoto |
| 2nd Author's Affiliation | Faculty of Engineering, Shinshu University |
| Date | 1998/6/11 |
| Paper # | SP98-22 |
| Volume (vol) | vol.98 |
| Number (no) | 105 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |