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Related Experiment Videos

Loudness adaptation: real or illusory

J D Hood, P Wade

    British Journal of Audiology
    |February 1, 1982
    PubMed
    Summary
    This summary is machine-generated.

    Sustained listening to a continuous tone can lead to a real decrease in perceived loudness over time. This loudness loss, measurable with specific procedures, is not an illusion but a genuine auditory phenomenon.

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    Area of Science:

    • Auditory perception
    • Psychoacoustics
    • Human hearing

    Background:

    • Loudness of continuous tones is generally perceived as stable over time.
    • Simultaneous dichotic loudness balancing (SDLB) reveals loudness reduction, previously attributed to central binaural interaction.
    • The nature of this loudness change has been debated, with some suggesting it's not a true loudness loss.

    Purpose of the Study:

    • To investigate whether sustained monaural stimulation with a continuous tone causes a real loudness loss.
    • To compare the time course of this loudness loss with that observed using the SDLB procedure.
    • To re-evaluate the interpretation of loudness changes observed in auditory experiments.

    Main Methods:

    • Two studies were conducted using loudness scaling and loudness doubling procedures.

    Related Experiment Videos

  • Participants were exposed to sustained monaural stimulation with a 60-dB (HL), 1000-Hz tone.
  • Loudness perception was assessed over time during and after the sustained stimulation.

    • Main Results:

    • A significant loudness loss was clearly demonstrated following sustained monaural tone stimulation.
    • The time course of this loudness loss closely mirrored the progression observed with the SDLB procedure.
    • The magnitude of loudness reduction was substantial and measurable.

    Conclusions:

    • Both sustained monaural stimulation and SDLB reveal a genuine, real-term loudness loss.
    • The perceived stability of loudness for continuous tones is likely due to the absence of a reference standard for judgment.
    • This finding challenges previous explanations based solely on central binaural interaction.