[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Rationale for Critical Bands
At 15:00 15/06/2010, Wiebe Horst wrote:
I am getting more and more confused by this discussion.
It would help if every contributor started by giving his/her
definition of Critical Band.
I am used to using Scharf's (1970) definition:
"The critical band is a band of that width at which subjective
responses change rather abruptly."
The problem with this definition is that there are few if any
auditory responses which "change rather abruptly" at a certain
bandwidth. The perceptual changes are nearly always smooth and
progressive, consistent with auditory filters with rounded tops.
And speech perception does deteriorate at high levels, probably due
to broadening of the auditory filters. See, for example:
Studebaker, G. A., Sherbecoe, R. L., McDaniel, D. M., Gwaltney, C.
A., 1999. Monosyllabic word recognition at higher-than-normal speech
and noise levels. J. Acoust. Soc. Am. 105, 2431-2444.
Brian C. J. Moore, Ph.D, FMedSci, FRS,
Professor of Auditory Perception,
Department of Experimental Psychology,
University of Cambridge,
Cambridge CB2 3EB,
Tel. +44 (0) 1223 333574
Fax. +44 (0) 1223 333564