4th International Conference on Spoken Language Processing

Philadelphia, PA, USA
October 3-6, 1996

Sub-band Adaptive Filtering Applied to Speech Enhancement

A. J. Darlington, D. J. Campbell

Department of Electrical and Electronic Engineering, University of Paisley, Paisley, Scotland, UK

An adaptive noise cancellation scheme for speech processing is proposed. In this, the adaptive filters are implemented in frequency-limited sub-bands. In previous work, the filters had been distributed in a linear fashion in the frequency domain. This work investigates the effects of spacing the filters more in sympathy with the signal power and spectral characteristics. It emerges that improvements in signal-to-noise ratio of processed noisy speech signals may be obtained when the sub-bands are spaced according to a published cochlear function.

Full Paper

Bibliographic reference.  Darlington, A. J. / Campbell, D. J. (1996): "Sub-band adaptive filtering applied to speech enhancement", In ICSLP-1996, 921-924.