Accession Number:
ADA243498
Title:
Classification of Complex Sounds
Descriptive Note:
Annual rept. 1 Nov 90-30 Oct 91,
Corporate Author:
CALIFORNIA UNIV IRVINE DEPT OF COGNITIVE SCIENCES
Personal Author(s):
Report Date:
1991-10-30
Pagination or Media Count:
10.0
Abstract:
The work accomplished during the period, 11190 - 103091, involves the use of COSS analysis to estimate weights in various profile analysis tasks. This technique is a method for investigating how spectral information is used by listeners to discriminate complex sounds. A profile type task is essentially an empirical method for investigating how spectral information from different auditory channels is used to discriminate complex sounds. In a typical profile task, the standard consists of n tones of equal intensity and the signal consists of an increment in the intensity of a single tone complex. Since overall level is varied randomly on each stimulus presentation over a range of 20 dB or greater, absolute intensity is not a useful cue. The first set of experiments examined listeners abilities to discriminate a flat spectrum eight tones of equal intensity from a rippled spectra consisting of a pattern of intensity changes across the entire spectrum.
Descriptors:
Subject Categories:
- Acoustics