Study of the Discrimination and Identification of Complex Sounds
Abstract
This progress report describes work completed in the first two years of a proposed three-year study of the discrimination and identification of complex sounds. Support was terminated at the end of the second year. Much of the effort in the first year was devoted to the installation of a multi-user PDP 11 computer system to be used for program development, data analysis, and synthesis of complex sounds. In addition, experiments were completed in four topic areas: 1) Work on auditory processing capacity limitations was extended using threshold values of delta /1 and delta F/F (dB) as dependent measures; 2) New experiments on the discriminability of noise samples have shown that the discriminability of differences in pairs of noise samples depends on the duration and location of the deviant portion of noise within a noise sample, replicating a similar finding obtained earlier with tonal patterns; 3) Internal noise is assumed by signal detection theories to account for less-than-perfect detection and discrimination performance; and 4) Preliminary studies with complex stimuli developed for use in vigilance experiments have shown that listeners are able to integrate information across multiple components of multidimensional sounds, with little or no loss due to increasing the number of components over a range of from 1 to 7.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1988
- Accession Number
- ADA198660
Entities
Organizations
- Indiana University Bloomington