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.

Subject Categories:

  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE