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Phonetic perception: evidence for context-dependent and context-independent processing

J L Miller

    The Journal of the Acoustical Society of America
    |March 1, 1981
    PubMed
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    Speech processing involves distinct interactions between acoustic cues. Voice-onset time and spectral transitions for place are interdependent, while duration and spectral cues for manner show complex dependencies.

    Area of Science:

    • Psycholinguistics
    • Auditory Perception
    • Speech Science

    Background:

    • Understanding how the human auditory system processes complex acoustic information in speech is crucial for deciphering speech perception.
    • Syllable-initial consonants contain vital phonetic information, including voicing, place, and manner of articulation, which are acoustically encoded.

    Purpose of the Study:

    • To investigate the dependencies in processing acoustic information for syllable-initial consonants using a selective adaptation technique.
    • To determine how different acoustic dimensions (voice-onset time, spectral transitions, transition duration) interact during phonetic processing.

    Main Methods:

    • Employed a selective adaptation technique to probe the processing of phonetically relevant acoustic cues in syllable-initial consonants.

    Related Experiment Videos

  • Tested dependencies across different acoustic dimensions specifying voicing, place, and manner of articulation contrasts.
  • Evaluated processing patterns across two distinct vowel contexts to assess context dependency.

    • Main Results:

    • Voice-onset time (for voicing) and spectral transitions (for place) are processed in a mutually dependent manner.
    • Processing of spectral transitions (for place) is dependent on transition duration (for manner).
    • Transition duration (for manner) is processed independently of spectral characteristics (for place).

    Conclusions:

    • Speech processing exhibits distinct patterns of interaction between acoustic cues, not a uniform mechanism.
    • The speech processing system is not solely context-conditioned, suggesting some level of independent cue analysis.
    • Early stages of speech signal analysis involve distinct acoustic dimensions, rather than holistic processing, to extract phonetic information.