Title :
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
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;
Conference_Titel :
Digital Signal Processing Workshop Proceedings, 1996., IEEE
Conference_Location :
Loen
Print_ISBN :
0-7803-3629-1
DOI :
10.1109/DSPWS.1996.555483
