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Related Experiment Videos

Auditory filter shapes in forward masking as a function of level

B R Glasberg, B C Moore

    The Journal of the Acoustical Society of America
    |April 1, 1982
    PubMed
    Summary

    This study measured auditory filter bandwidths using notched noise maskers. Results show auditory filters are consistent across different noise and signal levels, with a mean 3-dB bandwidth of 90 Hz.

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    Area of Science:

    • Auditory perception
    • Psychoacoustics
    • Signal processing in hearing

    Background:

    • Understanding auditory filters is crucial for explaining human hearing.
    • Previous research has explored auditory filter shapes using various masking techniques.

    Purpose of the Study:

    • To measure auditory filter bandwidths using a notched noise masker.
    • To investigate the influence of masker and signal levels on auditory filter characteristics.

    Main Methods:

    • Thresholds for sinusoidal signals were measured in the presence of noise maskers with a spectral notch of variable width.
    • Masking thresholds were transformed to account for masker decay.
    • Auditory filters were derived from the measured data under different noise and signal levels.

    Main Results:

    • Auditory filters derived from the data were consistent across two experimental conditions.
    • Auditory filter characteristics showed no significant variation with masker or signal level.
    • The mean 3-dB bandwidth of the derived auditory filters was 90 Hz.

    Conclusions:

    • Auditory filter bandwidth is robust and not significantly affected by masker or signal level within the tested range.
    • The notched noise masking paradigm effectively characterizes auditory filters.
    • The findings contribute to a comprehensive understanding of peripheral auditory processing.

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