대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)
- 대한전자공학회 2002년도 ITC-CSCC -1
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- Pages.102-105
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- 2002
A Noise Reduction Method with Linear Prediction Using Periodicity of Voiced Speech
- Sasaoka, Naoto (Faculty of Engineering, Tottori University) ;
- Kawamura, Arata (Faculty of Engineering, Tottori University) ;
- Fujii, Kensaku (Faculty of Engineering, Himeji Institute of Technology) ;
- Itoh, Yoshio (Faculty of Engineering, Tottori University) ;
- Fukui, Yutaka (Faculty of Engineering, Tottori University)
- 발행 : 2002.07.01
초록
A noise reduction technique to reduce background noise in corrupted voice is proposed. The proposed method is based on linear prediction and takes advantages of periodicity of voiced speech. A voiced sound is regarded as a periodic stationary signal in short time interval. Therefore, the current voice signal is correlated with the voice signal delayed by a pitch period. A linear predictor can estimate only the current signal correlated with the delayed signal. Therefore, the enhanced voice can be obtained as output of the linear predictor. Simulation results show that the proposed method is able to reduce the background noise.
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