The effect of modified filter distribution on an adaptive, sub-band speech enhancement method

Author

Darlington, David J. ; Campbell, Douglas R.

Author_Institution

Dept. of Electr. & Electron. Eng., Paisley Coll. of Technol., UK

fYear

1996

Firstpage

153

Lastpage

156

Abstract

An adaptive noise cancellation scheme for speech processing is described, in which adaptive filters operate in frequency-limited sub-bands. Previously 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 is found that improvements in signal-to-noise ratio of processed noisy speech signals may be obtained in certain cases when the sub-bands are spaced according to a published cochlear function

Keywords

adaptive filters; adaptive signal processing; hearing; interference suppression; speech enhancement; adaptive filters; adaptive noise cancellation scheme; adaptive sub-band speech enhancement; cochlear function; frequency-limited sub-bands; modified filter distribution; noisy speech signals; signal power; signal-to-noise ratio; spectral characteristics; speech processing; Acoustic noise; Adaptive filters; Frequency domain analysis; Humans; Noise cancellation; Nonlinear filters; Signal processing; Signal to noise ratio; Speech enhancement; Speech processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Digital Signal Processing Workshop Proceedings, 1996., IEEE

Conference_Location

Loen

Print_ISBN

0-7803-3629-1

Type

conf

DOI

10.1109/DSPWS.1996.555483

Filename

555483