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Calibration force levels for bone conduction vibrators.

B L Billings, M Winter

    Journal of Speech and Hearing Research
    |December 1, 1977
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    New bone conduction vibrators meet international standards. Testing with normal-hearing adults confirmed accurate pure-tone threshold measurements, aligning with established auditory guidelines.

    Area of Science:

    • Audiology
    • Biomedical Engineering
    • Hearing Science

    Background:

    • Development of new bone conduction vibrators (Radioear B71, B72) and a headband (Radioear P-3333).
    • These devices are designed to comply with International Electrotechnical Commission (IEC) and American National Standard Institute (ANSI) specifications.

    Purpose of the Study:

    • To evaluate the performance of the new bone conduction vibrators and headband.
    • To validate the accuracy of pure-tone threshold measurements obtained using these devices.

    Main Methods:

    • Pure-tone air and bone conduction thresholds were measured in 24 young adults with normal hearing.
    • Audiometric frequencies ranged from 250 to 4000 Hz.
    • Standardized testing procedures were followed.

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    Main Results:

    • Threshold measurements demonstrated good agreement with established American National Standard Institute (ANSI) air conduction threshold sound pressure levels.
    • Bone conduction threshold force levels obtained in the study align well with previously reported literature values.
    • The developed vibrators and headband provide reliable auditory measurements.

    Conclusions:

    • The Radioear B71 and B72 bone conduction vibrators, along with the P-3333 headband, meet rigorous international standards.
    • The devices are suitable for accurate pure-tone threshold testing in audiological assessments.
    • This research validates the use of these new devices for clinical and research applications in hearing science.