EUROSPEECH 2003 - INTERSPEECH 2003
In this paper, a Kalman filter-based speech enhancement algorithm with some improvements of previous work is presented. A new technique based on spectral subtraction is used for separation speech and noise characteristics from noisy speech and for the computation of speech and noise autoregressive (AR) parameters. In order to obtain a Kalman filter output with high audible quality, a perceptual post-filter is placed at the output of the Kalman filter to smooth the enhanced speech spectra. Experiments indicate that this newly proposed method works well.
Bibliographic reference. Wei, Jianqiang / Du, Limin / Yan, Zhaoli / Zeng, Hui (2003): "Improved kalman filter-based speech enhancement", In EUROSPEECH-2003, 549-552.