| Presentation | 2005/11/17 A Study on Improvement in Noise Estimation Accuracy of Noise Reconstruction System with Step Size Control Naoto SASAOKA, Yoshio ITOH, Kensaku FUJII, Sumio TUIKI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A noise reduction method is proposed to reduce background noise in noisy speech. We have proposed the noise reconstruction method using a linear prediction error filter (LPEF) and a noise reconstruction filter (NRF). A speech signal is known as the stationary signal in short time interval, so most of the speech signal can be predicted with the linear predictor. On the other hand, assuming that the background noise is generated by exciting a linear system with a white signal, the noise signal becomes the white signal by the LPEF. Therefore, the background noise can be reconstructed from the white noise by estimating the noise generating system. This estimation is performed by the NRF used as system identification. However, since a residual speech is included in the input signal of NRF, small step size for updating the coefficients of the NRF is needed not to estimate the speech signal. Therefore, it is difficult for NRF to track the non-stationary noise. In order to solve the problem, the noise reconstruction method using the step size control is proposed. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Noise Reduction / NLMS Algorithm / Step Size Control |
| Paper # | SIS2005-48 |
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| Conference Information | |
| Committee | SIS |
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| Conference Date | 2005/11/17(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| 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 on Improvement in Noise Estimation Accuracy of Noise Reconstruction System with Step Size Control |
| Sub Title (in English) | |
| Keyword(1) | Noise Reduction |
| Keyword(2) | NLMS Algorithm |
| Keyword(3) | Step Size Control |
| 1st Author's Name | Naoto SASAOKA |
| 1st Author's Affiliation | Faculty of Engineering, Tottori University() |
| 2nd Author's Name | Yoshio ITOH |
| 2nd Author's Affiliation | Faculty of Engineering, Tottori University |
| 3rd Author's Name | Kensaku FUJII |
| 3rd Author's Affiliation | Graduate school of Engineering, University of Hyogo |
| 4th Author's Name | Sumio TUIKI |
| 4th Author's Affiliation | Faculty of Engineering, Tottori University |
| Date | 2005/11/17 |
| Paper # | SIS2005-48 |
| Volume (vol) | vol.105 |
| Number (no) | 426 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |