The extent to which a position-based explanation accounts for binaural release from informational masking

被引：0
|
作者：
Gallun, Frederick J. [1 ,2 ]
Durlach, Nathaniel I. [1 ]
Colburn, H. Steven [1 ]
Shinn-Cunningham, Barbara G. [1 ]
Best, Virginia [1 ]
Mason, Christine R. [1 ]
Kidd Jr., Gerald [1 ]
机构：
[1] Hearing Research Center, Boston University, 635 Commonwealth Avenue, Boston, MA 02215, United States
[2] National Center for Rehabilitative Auditory Research, Portland VA Medical Center, 3710 SW US Veterans Hospital Road (NCRAR), Portland, OR 97239, United States
来源：
Journal of the Acoustical Society of America | 2008年 / 124卷 / 01期
关键词：
Detection was measured for a 500 Hz tone masked by noise (an energetic masker) or sets of ten randomly drawn tones (an informational masker). Presenting the maskers diotically and the target tone with a variety of interaural differences (interaural amplitude ratios and/or interaural time delays) resulted in reduced detection thresholds relative to when the target was presented diotically (binaural release from masking). Thresholds observed when time and amplitude differences applied to the target were reinforcing (favored the same ear; resulting in a lateralized position for the target) were not significantly different from thresholds obtained when differences were opposing (favored opposite ears; resulting in a centered position for the target). This irrelevance of differences in the perceived location of the target is a classic result for energetic maskers but had not previously been shown for informational maskers. However; this parallellism between the patterns of binaural release for energetic and informational maskers was not accompanied by high correlations between the patterns for individual listeners; supporting the idea that the mechanisms for binaural release from energetic and informational masking are fundamentally different. © 2008 Acoustical Society of America;
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摘要：
Journal article (JA)
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页码：439 / 449
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