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Related Experiment Videos

The precedence effect.

R Y Litovsky1, H S Colburn, W A Yost

  • 1Hearing Research Center, Boston University, Massachusetts 02215, USA. litovsky@bu.edu

The Journal of the Acoustical Society of America
|October 26, 1999
PubMed
Summary
This summary is machine-generated.

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The precedence effect explains how the first sound heard, not reflections, dominates perception and localization. This review integrates psychoacoustic and physiological data to understand this auditory phenomenon.

Area of Science:

  • Auditory perception
  • Psychoacoustics
  • Neuroscience

Background:

  • In reverberant spaces, sound reaches ears via direct paths and reflections.
  • The first-arriving sound wave significantly influences perception and localization.
  • The precedence effect describes phenomena resolving auditory competition between direct sound and echoes.

Purpose of the Study:

  • To provide a framework for describing precedence effects.
  • To integrate psychoacoustic and physiological experimental data.
  • To facilitate the development of a comprehensive theory of auditory precedence.

Main Methods:

  • Review of psychoacoustic measurements (fusion, localization dominance, discrimination suppression).
  • Discussion of precedence effect buildup and breakdown.

Related Experiment Videos

  • Examination of animal studies, human developmental changes, and physiological measurements.
  • Description of various psychophysical models.

    • Main Results:

    • Psychoacoustic studies reveal distinct aspects of the precedence effect.
    • Precedence effects show developmental changes and are present across species.
    • Physiological data offer insights into the neural basis of these effects.
    • Diverse psychophysical models highlight different theoretical approaches.

    Conclusions:

    • A complete understanding of precedence effects requires integrating psychoacoustic and physiological findings.
    • Combined research efforts are crucial for developing robust theories and models.
    • The review provides a foundation for future research in auditory perception and localization.