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A comparative study of alternative bone-conduction calibration methods

J E Lankford, M P Evans

    Ear and Hearing
    |July 1, 1981
    PubMed
    Summary
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    The input voltage method is an accurate and efficient alternative for calibrating audiometer bone-conduction systems. This method offers a practical solution compared to real-ear threshold methods.

    Area of Science:

    • Audiology
    • Hearing Science
    • Biomedical Engineering

    Background:

    • The artificial mastoid is the standard for audiometer bone-conduction calibration.
    • Alternative calibration methods are frequently used due to various factors.
    • Common alternatives include input voltage and real-ear threshold methods.

    Purpose of the Study:

    • To compare the accuracy and efficiency of alternative bone-conduction audiometer calibration methods.
    • To identify the most suitable alternative calibration technique.

    Main Methods:

    • Comparison of three calibration methods: input voltage, real-ear threshold with normal-hearing listeners, and real-ear threshold with sensorineural hearing loss subjects.
    • Evaluation of accuracy and efficiency for each method.

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    Main Results:

    • No significant differences in accuracy were observed among the three calibration methods.
    • Significant differences in efficiency were identified between the methods.
    • The input voltage method demonstrated superior efficiency.

    Conclusions:

    • The input voltage method is a viable and efficient alternative for bone-conduction audiometer calibration.
    • Considering both accuracy and efficiency, the input voltage method is recommended over real-ear threshold methods.