| Presentation | 2010-03-05 A Study of Speech Noise Reduction System Based on Lattice Filter and Identification System Takafumi TAKEMOTO, Naoto SASAOKA, Yoshio ITOH, Kensaku FUJII, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We have investigated a noise reconstruction system (NRS) with an adaptive line enhancer (ALE) as a noise reduction system. The NRS uses a linear prediction error filter (LPEF) and a noise reconstruction filter (NRF). The NRS assumes that the background noise is generated by exciting a linear system with a white signal. First, the white signal is estimated by the ALE and LPEF. Next, the background noise is reconstructed from the white signal by estimating the linear system in the NRF. In the conventional NRS, a transversal filter is used as the LPEF. However, the speech component included in a white signal remains by a transversal type LPEF. Therefore, the quality of enhanced speech is degraded. In order to solve the problem, a lattice filter is introduced to a LPEF. Since a lattice filter approximates the vocal tract model of speech, the residual speech is decreased and the quality of enhanced speech is improved. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Noise Reduction / System Identification / Lattice Filter |
| Paper # | SIS2009-62 |
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| Conference Information | |
| Committee | SIS |
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| Conference Date | 2010/2/25(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Smart Info-Media Systems (SIS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study of Speech Noise Reduction System Based on Lattice Filter and Identification System |
| Sub Title (in English) | |
| Keyword(1) | Noise Reduction |
| Keyword(2) | System Identification |
| Keyword(3) | Lattice Filter |
| 1st Author's Name | Takafumi TAKEMOTO |
| 1st Author's Affiliation | Graduate school of Engineering, Tottori University() |
| 2nd Author's Name | Naoto SASAOKA |
| 2nd Author's Affiliation | Graduate school of Engineering, Tottori University |
| 3rd Author's Name | Yoshio ITOH |
| 3rd Author's Affiliation | Graduate school of Engineering, Tottori University |
| 4th Author's Name | Kensaku FUJII |
| 4th Author's Affiliation | Graduate school of Engineering, University of Hyogo |
| Date | 2010-03-05 |
| Paper # | SIS2009-62 |
| Volume (vol) | vol.109 |
| Number (no) | 447 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |