Title :
Sub-band adaptive filtering applied to speech enhancement
Author :
Darlington, David J. ; Campbell, Douglas R.
Author_Institution :
Dept. of Electr. & Electron. Eng., Paisley Univ., UK
Abstract :
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
Keywords :
acoustic noise; adaptive filters; noise abatement; speech enhancement; adaptive filters; adaptive noise cancellation scheme; frequency domain; frequency limited sub bands; processed noisy speech signals; published cochlear function; signal power; signal to noise ratio; spectral characteristics; speech enhancement; speech processing; sub band adaptive filtering; Acoustic noise; Adaptive filters; Adaptive systems; Humans; Least squares approximation; Noise cancellation; Noise level; Power system modeling; Signal processing; Speech enhancement;
Conference_Titel :
Spoken Language, 1996. ICSLP 96. Proceedings., Fourth International Conference on
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-3555-4
DOI :
10.1109/ICSLP.1996.607752
