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Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
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Speech Recognition at the Acceptable Noise Level.

Susan Gordon-Hickey, Holly Morlas

    Journal of the American Academy of Audiology
    |June 10, 2015
    PubMed
    Summary
    This summary is machine-generated.

    Acceptable noise level (ANL) is a hearing aid fitting measure. Speech recognition at ANL varies, suggesting it

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    Area of Science:

    • Audiology
    • Hearing Science
    • Speech and Hearing Sciences

    Background:

    • Acceptable Noise Level (ANL) is a proposed pre-hearing aid fitting measure for selection and counseling.
    • Previous research indicates ANL is unrelated to speech recognition in noise abilities.
    • The criteria listeners use to set their ANL and the speech recognition at this level remain unexplored.

    Purpose of the Study:

    • To investigate the amount of speech recognized at a listener's Acceptable Noise Level (ANL).
    • To determine if speech recognition in noise influences the setting of ANL.

    Main Methods:

    • A descriptive quasi-experimental study involving 44 older adults (27 normal hearing, 17 with hearing loss).
    • ANL was measured, and speech recognition in noise was tested at ANL, ANL + 5 dB SNR, and ANL - 5 dB SNR.
    • Data included most comfortable listening level, background noise level, and quick speech-in-noise test results.

    Main Results:

    • A significant interaction between SNR condition and ANL group was observed for speech recognition.
    • Listeners in the mid and high ANL groups demonstrated excellent speech recognition at their ANL.
    • Speech recognition in noise at ANL decreased as the ANL category decreased.

    Conclusions:

    • Speech recognition appears to be a primary factor for mid and high ANL groups when setting their ANL.
    • For low ANL groups, speech recognition may contribute but is not the primary determiner.
    • Speech recognition is not a significant variable for very low ANL groups in setting their ANL.