| The influence of masker fringe on sound localization in noise. | |
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MedLine Citation:
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PMID: 19354650 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Several studies have shown that detection of a dichotic target signal in a concurrent diotic noise masker improves when the masker onset occurs prior to that of the target andor the masker duration extends beyond the target offset (so-called masker fringe; McFadden, 1966; Trahiotis et al. 1972). It has been argued that this improved performance results from the fact that the masker fringe provides a baseline set of interaural parameters against which a change in parameters, associated with the signal onset or offset, can be detected. As the duration of the fringe increases, more time is available to estimate these baseline parameters, thus improving signal detectability. However, little is known about the relation between masker fringe and spatial hearing. In this study, the localization of a 250-ms click train signal presented in a broadband directional noise masker was measured as a function of the duration of the masker fringe and the signal-to-noise ratio. The results indicate that the presence of masker fringe improves localization performance relative to the case in which the masker and signal are pulsed on and off simultaneously. Moreover, the benefit of masker fringe increases with decreasing signal-to-noise ratio. [Work supported by a grant from AFOSR.]. |
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Authors:
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Brian D Simpson; Robert H Gilkey; Douglas S Brungart; Nandini Iyer; Griffin D Romigh |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 125 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2009 Apr |
Date Detail:
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Created Date: 2009-04-09 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
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Languages: eng Pagination: 2522 Citation Subset: IM |
Affiliation:
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Air Force Res. Lab., 2610 Seventh St., Wright-Patterson Air Force Base, OH 45433Wright State Univ., Dayton, OH 45435Wright-Patterson Air Force Base, OH 45433. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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