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Two procedures for estimating internal noise

M F Spiegel, D M Green

    The Journal of the Acoustical Society of America
    |July 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

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    This study measured internal noise using two methods, finding it nearly equals external noise variability. Both methods have limitations, including uncertainty and measurement errors, affecting internal noise estimation.

    Area of Science:

    • Auditory perception
    • Psychoacoustics
    • Psychophysics

    Background:

    • Internal noise is a critical factor in auditory perception.
    • Quantifying internal noise is essential for understanding hearing limitations.

    Purpose of the Study:

    • To measure internal noise using two distinct experimental paradigms.
    • To compare the effectiveness and limitations of different internal noise estimation methods.

    Main Methods:

    • Listener agreement in identifying signal-like maskers (Green, 1964).
    • Increment in detection performance with identical vs. different maskers (Siegel, 1979).

    Main Results:

    • Estimates of additive internal noise were consistently near external noise variability.

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  • Agreement method estimates can be biased by interval uncertainty.
  • Detection method estimates are sensitive to measurement errors.

    • Conclusions:

    • Both methods provide estimates of internal noise comparable to external noise.
    • Each method possesses unique vulnerabilities that can influence results.
    • Further refinement of these techniques is necessary for accurate internal noise assessment.