Auditory Pattern Memory: Mechanisms of Tonal Sequence Discrimination by Human Observers.
Final rept. 1 Sep 84-31 Aug 87,
PURDUE UNIV LAFAYETTE IN DEPT OF PSYCHOLOGICAL SCIENCES
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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.
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