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Related Experiment Videos

Telephone listening ability in a noisy background.

A E Holmes, T Frank, R G Stoker

    Ear and Hearing
    |March 1, 1983
    PubMed
    Summary

    Eliminating telephone side-tone feedback significantly improves listening ability in noisy environments. This enhancement is crucial for clear communication, especially with background multitalker or white noise.

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    Area of Science:

    • Audiology
    • Speech Communication
    • Human-Computer Interaction

    Background:

    • Telephone handsets utilize side-tone feedback for voice monitoring.
    • This feedback loop can amplify background noise, degrading speech intelligibility.
    • Investigating the impact of side-tone on telephone listening in noise is essential.

    Purpose of the Study:

    • To assess the influence of side-tone feedback on telephone listening ability.
    • To compare performance in multitalker (MT) versus white noise (WN) backgrounds.
    • To determine the effect of eliminating side-tone on speech perception in noise.

    Main Methods:

    • 30 normal-hearing subjects participated.
    • Noise conditions included multitalker (MT) and white noise (WN) at 65, 75, and 85 dB SPL.
    • Listening tests were conducted with side-tone feedback present and eliminated.

    Main Results:

    • Telephone listening ability decreased significantly with increasing noise levels for both MT and WN.
    • Listening ability was poorer in MT noise compared to WN across all conditions.
    • Eliminating side-tone feedback significantly improved listening ability, particularly at higher noise levels.

    Conclusions:

    • Side-tone feedback negatively impacts telephone listening in noisy environments.
    • Eliminating side-tone is an effective strategy to enhance speech intelligibility over the phone.
    • This finding has implications for telephone design and user experience in challenging acoustic conditions.

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