Accession Number : ADA190337
Title : Auditory Pattern Memory: Mechanisms of Tonal Sequence Discrimination by Human Observers.
Descriptive Note : Final rept. 1 Sep 84-31 Aug 87,
Corporate Author : PURDUE UNIV LAFAYETTE IN DEPT OF PSYCHOLOGICAL SCIENCES
Personal Author(s) : Sorkin, Robert D
Report Date : 30 Sep 1987
Pagination or Media Count : 46
Abstract : A two-process model of pattern discrimination was developed to describe how tonal sequences are processed, stored, and discriminated by the human auditory system. The model was tested in tasks in which subjects were required to discriminate between the frequency patterns encoded in two sequences of tones. The experimental results strongly supported the assumptions of a trace and context coding mechanism and indicated that the trace mechanism is relatively insensitive to temporal transformations made to the stimulus. An attempt to model the pattern discrimination mechanism with specific computational algorithms was less successful. A technique was developed to assess the manner in which information is accumulated from elements of an auditory or visual stimulus. Results indicate that the technique may be useful in the design of display systems. Keywords: Hearing, Sense organs, Algorithms, Auditory patterns, Auditory memory, Temporal uncertainty, Models of auditory signal processing.
Descriptors : *MEMORY DEVICES , *PATTERN RECOGNITION , ALGORITHMS , AUDIO TONES , AUDITORY SIGNALS , CODING , COMPUTATIONS , DISCRIMINATION , DISPLAY SYSTEMS , FREQUENCY , HEARING , HUMANS , OBSERVERS , PATTERNS , SENSE ORGANS , SEQUENCES , SIGNAL PROCESSING , STIMULI , VISUAL PERCEPTION
Subject Categories : Computer Hardware
Distribution Statement : APPROVED FOR PUBLIC RELEASE