Accession Number : ADA325716

Title :   Psychophysics of Complex Auditory and Speech Stimuli.

Descriptive Note : Final rept. 1 Nov 92-31 Oct 96,

Corporate Author : STATE UNIV OF NEW YORK AT BINGHAMTON

Personal Author(s) : Pastore, Richard E.

PDF Url : ADA325716

Report Date : OCT 1996

Pagination or Media Count : 30

Abstract : The supported research provides a careful examination of the many different interrelated factors, processes, and constructs important to the perception by humans of complex acoustic signals, including speech and music. Traditional, solid psychophysical procedures were employed to systematically investigate perceptual interaction, grouping, and streaming as a function of physical and perceptual properties of stimuli. Models of stimulus interaction are being developed from research with simpler stimuli and tested with more complex stimuli, including speech. In addition, several cross validated scaling measures and procedures were used to determine the multidimensional perceptual space for highly learned categories, identifying the critical underlying dimensions, the function of each dimension for every category, and the nature of interactions among dimensions. Results also were used to develop and evaluate prototype, exemplar, and threshold models for the underlying categorization process. The research provides a comprehensive picture of lower and higher level factors and processes which result in the perception of classes of complex auditory stimuli, including speech and music. In health, industry, and human factors, the evaluation of problems and the development of appropriate approaches to treatment are limited by the accuracy of our understanding of the basic, underlying processes. Therefore, the improved understanding of perceptual processes for auditory and speech stimuli which result from this research has significant implications for scientific and practical advances in all of these fields.

Descriptors :   *SPEECH RECOGNITION, *AUDITORY PERCEPTION, *PSYCHOPHYSIOLOGY, *CUES(STIMULI), PERFORMANCE TESTS, PERFORMANCE(HUMAN), THRESHOLD EFFECTS, HUMAN FACTORS ENGINEERING, ACOUSTIC SIGNALS, SPEECH TRANSMISSION, RESPONSE(BIOLOGY), THRESHOLDS(PHYSIOLOGY), SPEECH ARTICULATION, PSYCHOPHYSICS, PSYCHOACOUSTICS, AUDITORY ACUITY, REACTION(PSYCHOLOGY), MUSIC.

Subject Categories : Psychology

Distribution Statement : APPROVED FOR PUBLIC RELEASE