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Related Experiment Videos

Microprocessor, self-recording and manual audiometry.

D A Harris

    The Journal of Auditory Research
    |July 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

    Comparing three hearing threshold measurement methods, microprocessor audiometry closely matched standard manual procedures for industrial hearing conservation. Self-recording audiometry yielded lower thresholds, impacting compliance assessments.

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    Area of Science:

    • Audiology
    • Occupational Health
    • Hearing Conservation

    Background:

    • Accurate hearing threshold level (HTL) measurement is crucial for industrial hearing conservation programs.
    • Federal agencies mandate specific testing protocols for compliance.
    • Evaluating different audiometric methods is essential to ensure reliable data.

    Purpose of the Study:

    • To compare hearing threshold measurements obtained via standardized manual, self-recording (Bekesy), and microprocessor audiometry.
    • To determine the impact of these three methods on threshold measurements in the context of industrial hearing conservation.
    • To assess the suitability of each method for compliance with federal agency recommendations.

    Main Methods:

    • Hearing threshold levels (HTLs) were measured in 12 normal-hearing young adults.

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  • Three audiometric methods were employed: standardized manual, self-recording (Bekesy), and microprocessor audiometry.
  • Each participant underwent testing using all three methods, with a 7-frequency audiogram performed on both ears.

    • Main Results:

    • Self-recording audiometry produced mean thresholds 1-9 dB lower than standard manual audiometry.
    • Microprocessor audiometry yielded mean thresholds 0.2-4.4 dB higher than standard manual audiometry, except at 4 kHz where it was 3.8 dB lower.
    • All three methods required approximately 7-8 minutes per participant for a complete audiogram.

    Conclusions:

    • Microprocessor audiometry demonstrated closer approximation to standard manual audiometry compared to self-recording audiometry.
    • The choice of audiometric method can influence hearing threshold measurements, potentially affecting compliance in industrial settings.
    • All tested methods were comparable in terms of time efficiency for obtaining a 7-frequency audiogram.