Integration of featural information in speech perception.

Abstract

A model for the identification of speech sounds is proposed that assumes that (a) the acoustic cues are perceived independently, (b) feature evaluation provides information about the degree to which each quality is present in the speech sound, (c) each speech sound is denned by a propositional prototype in longterm memory that determines how the featural information is integrated, and (d) the speech sound is identified on the basis of the relative degree to which it matches the various alternative prototypes. The model was supported by the results of an experiment in which subjects identified stop-consonant-vowel syllables that were factorially generated by independently varying acoustic cues for voicing and for place of articulation. This experiment also replicated previous findings of changes in the identification boundary of one acoustic dimension as a function of the level of another dimension. These results have previously been interpreted as evidence for the interaction of the perceptions of the acoustic features themselves. In contrast, the present model provides a good description of the data, including these boundary changes, while still maintaining complete

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1. Human adults and human infants show a “perceptual magnet effect” for the prototypes of speech categories, monkeys do not
   Kuhl, Patricia K. · 1991 · Perception & Psychophysics
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   Samuel, Arthur G. · 1982 · Perception & Psychophysics
5. Word recognition reflects dimension-based statistical learning.
   Idemaru, Kaori, Holt, Lori L. · 2011 · Journal of Experimental Psychology: Human Perception and Performance

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