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Feature detection process in speech perception

J S Bryant

    Journal of Experimental Psychology. Human Perception and Performance
    |November 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

    Speech perception research explored two models: feature synthesis versus continuous processing. Selective adaptation experiments revealed that the continuous processing model better explains adaptation effects, challenging the feature synthesis view.

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    Area of Science:

    • Cognitive psychology
    • Auditory neuroscience
    • Speech processing

    Background:

    • Current speech perception models propose feature extraction and synthesis.
    • An alternative model suggests initial processing of speech as a continuous whole.

    Purpose of the Study:

    • To experimentally test the feature synthesis model against the continuous processing model of speech perception.
    • To investigate the role of processing time and perceptual similarity in selective adaptation.

    Main Methods:

    • Two selective adaptation experiments were conducted.
    • Experiment 1 manipulated adaptor processing time.
    • Experiment 2 manipulated adaptor processing time and perceptual similarity between adaptation sequences and test items.

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    Main Results:

    • Experiment 1 showed adaptation increased with adaptor processing time, consistent with both models.
    • Experiment 2 demonstrated a reversal of this effect when adaptation sequences were perceptually similar to test items, favoring the continuous processing model.
    • The feature synthesis model struggled to account for the results of the second experiment.

    Conclusions:

    • Findings challenge the current feature synthesis model of speech perception.
    • The continuous multidimensional processing model provides a more robust explanation for observed adaptation phenomena.
    • Further research is needed to refine understanding of feature detection in speech perception.