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Related Experiment Videos

Dynamic frequency change influences loudness perception: a central, analytic process.

J G Neuhoff1, M K McBeath, W C Wanzie

  • 1Department of Psychology, Lafayette College, Easton, Pennsylvania 18042-1781, USA. neuhoffj@lafayette.edu

Journal of Experimental Psychology. Human Perception and Performance
|August 28, 1999
PubMed
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Dynamic frequency changes significantly impact perceived loudness, challenging traditional static loudness models. This auditory perception effect occurs centrally and may be an evolved response to natural sound environments.

Area of Science:

  • Auditory Neuroscience
  • Psychoacoustics

Background:

  • Traditional models of loudness perception often rely on static measurements.
  • The dynamic interplay between frequency and intensity in natural soundscapes is complex.

Purpose of the Study:

  • To investigate the influence of dynamic frequency changes on perceived loudness.
  • To determine if this effect is dependent on dynamic variation and occurs centrally.

Main Methods:

  • Three experiments were conducted using auditory stimuli with concurrent frequency and intensity changes.
  • Listeners were tasked with tracking loudness while ignoring pitch variations.
  • A control experiment isolated the effect of dynamic change.

Main Results:

Related Experiment Videos

  • Dynamic frequency change significantly influenced perceived loudness.
  • The observed effect was dependent on the dynamic nature of the stimulus and contrasted with predictions from static equal loudness contours.
  • Cross-modal experiments demonstrated central auditory processing.

    • Conclusions:

    • Dynamic frequency and loudness interactions occur centrally within the auditory system.
    • This analytic process may have evolved to interpret naturally covaried frequency and intensity.
    • Static models inadequately represent loudness perception in dynamic, real-world auditory settings.