This paper describes a speech enhancement system using a novel combination of a Fast Wavelet Transform structure, together with "Wiener filtering" in the wavelet domain. The specific application of interest is the enhancement of speech when a cellular phone is used within a moving vehicle. Subjective tests carried out using speech with additive vehicle noise at a signal-to-noise ratio of 10 dB indicate that the Wavelet transform-based Wiener filtering approach works well. In particular, the technique was compared to several other common enhancement methods such as thresholding applied in the wavelet domain, FFT-based Wiener filtering, and spectral subtraction, and was found to outperform these other techniques.
Cite as: Ambikairajah, E., Tattersall, G., Davis, A. (1998) Wavelet transform-based speech enhancement. Proc. 5th International Conference on Spoken Language Processing (ICSLP 1998), paper 0140, doi: 10.21437/ICSLP.1998-348
@inproceedings{ambikairajah98_icslp,
author={Eliathamby Ambikairajah and Graham Tattersall and Andrew Davis},
title={{Wavelet transform-based speech enhancement}},
year=1998,
booktitle={Proc. 5th International Conference on Spoken Language Processing (ICSLP 1998)},
pages={paper 0140},
doi={10.21437/ICSLP.1998-348}
}