Pure-Tone Octave Masking in Normal-Hearing Listeners Octave masking was investigated at four different frequencies (250, 500, 1000, and 2000 Hz) as a function of intensity of the masker and phase of the test signal. Slopes of phase-locked octave masking were found to increase with masking signal frequency, from 0.80 dB/dB at 250 Hz to 3.0 dB/dB ... Research Article
Research Article  |   June 01, 1974
Pure-Tone Octave Masking in Normal-Hearing Listeners
 
Author Affiliations & Notes
  • David A. Nelson
    University of Pittsburgh, Pittsburgh, Pennsylvania
  • Robert C. Bilger
    University of Pittsburgh, Pittsburgh, Pennsylvania
Article Information
Research Articles
Research Article   |   June 01, 1974
Pure-Tone Octave Masking in Normal-Hearing Listeners
Journal of Speech, Language, and Hearing Research, June 1974, Vol. 17, 223-251. doi:10.1044/jshr.1702.223
History: Received August 1, 1972 , Accepted January 5, 1974
 
Journal of Speech, Language, and Hearing Research, June 1974, Vol. 17, 223-251. doi:10.1044/jshr.1702.223
History: Received August 1, 1972; Accepted January 5, 1974

Octave masking was investigated at four different frequencies (250, 500, 1000, and 2000 Hz) as a function of intensity of the masker and phase of the test signal. Slopes of phase-locked octave masking were found to increase with masking signal frequency, from 0.80 dB/dB at 250 Hz to 3.0 dB/dB at 2000 Hz. The monaural octave-masking phase effect was considerably larger for masking signals at low frequencies than at high frequencies, and the phase effect decreased or disappeared entirely for high-level masking signals. Interpretations are considered which take recent neurophysiological and physiological data into account, and which describe the octave-masking phase effects in terms of temporal pattern discrimination. Those interpretations adequately account for the frequency dependencies found in octave-masking phase effects.

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