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Perceived loudness and visually-determined auditory distance

D H Mershon, D H Desaulniers, S A Kiefer

    Perception
    |January 1, 1981
    PubMed
    Summary
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    Perceived distance influences sound loudness. As a sound appears farther away, its loudness increases, even without physical changes. This suggests a link between visual cues and auditory perception.

    Area of Science:

    • Auditory Perception
    • Psychoacoustics
    • Visual-Auditory Interaction

    Background:

    • Loudness perception is typically influenced by sound pressure level.
    • Visual information can significantly alter auditory experiences.
    • The relationship between perceived distance and loudness requires further investigation.

    Purpose of the Study:

    • To investigate if perceived distance affects sound loudness.
    • To explore the role of visual capture in manipulating apparent sound source distance.
    • To examine loudness perception independent of physical sound level changes.

    Main Methods:

    • Three experiments utilized visual capture to manipulate apparent sound source distance.
    • A hidden sound source emitted noise stimuli (40-75 dB(A)).

    Related Experiment Videos

  • Experiments were conducted in anechoic and semi-reverberant acoustic environments.

    • Main Results:

    • A general trend showed increased reported loudness with greater perceived distance.
    • Visual cues successfully altered the perceived location of the sound source.
    • This effect was observed across different sound levels and acoustic conditions.

    Conclusions:

    • Perceived distance, influenced by visual cues, significantly impacts subjective loudness.
    • Findings support the concept of loudness constancy, where perception adjusts to maintain stability.
    • This research highlights the complex interplay between visual and auditory sensory information.