Comodulation detection differences for fixed-frequency and roved-frequency maskers

The Journal of the Acoustical Society of America
J W HallJ H Grose

Abstract

This study investigated comodulation detection differences (CDD) for fixed- and roved-frequency maskers. The objective was to determine whether CDD could be accounted for better in terms of energetic masking or in terms of perceptual fusion/segregation related to comodulation. Roved-frequency maskers were used in order to minimize the role of energetic masking, allowing possible effects related to perceptual fusion/segregation to be revealed. The signals and maskers were composed of 30-Hz-wide noise bands. The signal was either comodulated with the masker (A/A condition) or had a temporal envelope that was independent (A/B condition). The masker was either gated synchronously with the signal or had a leading temporal fringe of 200 ms. In the fixed-frequency masker conditions, listeners with low A/A thresholds showed little masking release due to masker temporal fringe and had CDDs that could be accounted for by energetic masking. Listeners with higher A/A thresholds in the fixed-frequency masker conditions showed relatively large CDDs and large masking release due to a masker temporal fringe. The CDDs of these listeners may have arisen, at least in part, from processes related to perceptual segregation. Some listeners in the ro...Continue Reading

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Oct 27, 2005·The Journal of the Acoustical Society of America·Joseph W HallJohn H Grose

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Citations

Oct 10, 2007·Biological cybernetics·Michael BuschermöhleJan A Freund
Jan 18, 2007·The Journal of the Acoustical Society of America·Joseph W HallJohn H Grose
Apr 6, 2007·The Journal of the Acoustical Society of America·Kenneth Kragh Jensen
Mar 14, 2007·The Journal of the Acoustical Society of America·Virginia BestBarbara G Shinn-Cunningham
Jan 29, 2009·The Journal of the Acoustical Society of America·John H GroseJoseph W Hall
Apr 10, 2008·The Journal of the Acoustical Society of America·Joseph W HallJohn H Grose
Sep 11, 2007·Brain Research·Stephan M A Ernst, Jesko L Verhey
Aug 6, 2020·The Journal of the Acoustical Society of America·Monika-Maria Oster, Lynne A Werner

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