| Presentation | 2000/6/16 A New Noise Reduction Method Based on Linear Prediction Arata KAWAMURA, Kensaku FUJII, Yoshio ITOH, Yutaka FUKUI, Sumio TSUIKI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A technique that uses linear prediction to achieve noise reduction in a voice signal which has been mixed with an ambient noise (S-N ratio=about 0dB) is proposed. This noise reduction method which is based on the linear prediction estimates the voice spectrum while ignoring the spectrum of the white noise. The performance of the noise reduction method is examined using the transversal linear predictor filter. Next, we consider a practical application where the effects of round off errors arising from fixed-point computation has to be minimized. This minimization is achieved by using the lattice predictor filter. Finally, we consider a practical application where noise reduction is necessary. In this noise reduction method, both the voice spectrum and the actual noise spectrum is estimated. Noise reduction is achieved by using the linear predictor filter which includes the control of the predicting coefficient. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Noise Reduction / Linear Prediction / Sub-RLS Algorithm / Lattice Filter |
| Paper # | CAS2000-23,VLD2000-32,DSP2000-44 |
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| Conference Information | |
| Committee | CAS |
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| Conference Date | 2000/6/16(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Circuits and Systems (CAS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A New Noise Reduction Method Based on Linear Prediction |
| Sub Title (in English) | |
| Keyword(1) | Noise Reduction |
| Keyword(2) | Linear Prediction |
| Keyword(3) | Sub-RLS Algorithm |
| Keyword(4) | Lattice Filter |
| 1st Author's Name | Arata KAWAMURA |
| 1st Author's Affiliation | Faculty of Engineering, Tottori University() |
| 2nd Author's Name | Kensaku FUJII |
| 2nd Author's Affiliation | FUJITSU LABORATORIES LTD |
| 3rd Author's Name | Yoshio ITOH |
| 3rd Author's Affiliation | Faculty of Engineering, Tottori University |
| 4th Author's Name | Yutaka FUKUI |
| 4th Author's Affiliation | Faculty of Engineering, Tottori University |
| 5th Author's Name | Sumio TSUIKI |
| 5th Author's Affiliation | Faculty of Engineering, Tottori University |
| Date | 2000/6/16 |
| Paper # | CAS2000-23,VLD2000-32,DSP2000-44 |
| Volume (vol) | vol.100 |
| Number (no) | 119 |
| Page | pp.pp.- |
| #Pages | 7 |
| Date of Issue | |