| Presentation | 2005/7/15 An Improved mel-Wiener Filter for Mel-LPC based Speech Recognition BABUL ISLAM, Hiroshi MATSUMOTO, Kazumasa YAMAMOTO, |
|---|---|
| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents a frequency warped Wiener filter to enhance Mel-LPC spectra in presence of additive noise. The proposed filter is estimated based on minimization of error signal on the linear frequency scale and then is efficiently implemented in the autocorrelation domain without denoising input speech. The performance of the proposed filter is evaluated on Aurora 2 database. The optimum filter order is 5, which is shown to be lower than that of Mel-LPC analysis, and thus filtering is computationally inexpensive. As a result, word accuracy is improved by about 49% at most with the proposed Wiener filter. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Wiener filter / Mel-Wiener filter / Mel-LPC analysis / Spectral subtraction / Noisy speech recognition |
| Paper # | SP2005-42 |
| Date of Issue |
| Conference Information | |
| Committee | SP |
|---|---|
| Conference Date | 2005/7/15(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Speech (SP) |
|---|---|
| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | An Improved mel-Wiener Filter for Mel-LPC based Speech Recognition |
| Sub Title (in English) | |
| Keyword(1) | Wiener filter |
| Keyword(2) | Mel-Wiener filter |
| Keyword(3) | Mel-LPC analysis |
| Keyword(4) | Spectral subtraction |
| Keyword(5) | Noisy speech recognition |
| 1st Author's Name | BABUL ISLAM |
| 1st Author's Affiliation | Graduate School of Science and Technology, Shinshu University() |
| 2nd Author's Name | Hiroshi MATSUMOTO |
| 2nd Author's Affiliation | Faculty of Engineering, Shinshu University |
| 3rd Author's Name | Kazumasa YAMAMOTO |
| 3rd Author's Affiliation | Faculty of Engineering, Shinshu University |
| Date | 2005/7/15 |
| Paper # | SP2005-42 |
| Volume (vol) | vol.105 |
| Number (no) | 199 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |