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Related Experiment Videos

Two-tone auditory spectral resolution

L L Feth, H O'Malley

    The Journal of the Acoustical Society of America
    |October 1, 1977
    PubMed
    Summary
    This summary is machine-generated.

    Auditory spectral resolving power was estimated using complex tones. Discrimination of complex tones relates to spectral resolving power, approximating the traveling-wave envelope width.

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    Area of Science:

    • Auditory perception
    • Psychoacoustics
    • Signal processing

    Background:

    • Listener discrimination of complex tones depends on frequency and amplitude modulations.
    • Previous research links discriminability to instantaneous frequency differences.

    Purpose of the Study:

    • To estimate auditory spectral resolving power directly.
    • To define just discriminable frequency separation as a measure of spectral resolution.

    Main Methods:

    • Synthesized two-component complex tones with identical amplitude and opposite frequency modulations.
    • Measured the just discriminable (75%) frequency separation between tone components.

    Main Results:

    • Defined spectral resolving power without assumptions about masking or loudness.

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  • Found resolution bandwidths approximate the width of the traveling-wave envelope.

    • Conclusions:

    • Listener-based frequency discrimination provides a direct estimate of spectral resolving power.
    • Results offer implications for understanding auditory critical bandwidths.