| The effect of flanking bands on sensitivity to interaural time differences. | |
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MedLine Citation:
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PMID: 19354649 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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We are examining the potential for cochlear implant patients who retain some low-frequency residual hearing in both ears to benefit from interaural time differences (ITDs) to improve speech reception. Given the likelihood of asymmetrical loss in the low-frequency region, the relationship between spectral overlap and ITD sensitivity is of interest. We previously measured ITD sensitivity using narrow-band noise carriers, while varying the amount of spectral overlap between the ears. We found very good sensitivity when the bands completely overlapped, but for most listeners, sensitivity declined as the center frequency of one band was moved away from the other. When, for example, 23-octave bands were offset by 13 octave and presented to each ear, ITD sensitivity declined. This condition consists of three bands, a 13-octave center band that is spectrally similar across ears, and two 13-octave flanking bands, each of which is present in one or the other ear. Because the center band alone produces good ITD sensitivity, we hypothesized that moving the flankers away in frequency from the center band would result in improved sensitivity. However, the presence of the spectrally displaced bands led to poorer ITD sensitivity. [Work supported by grants from NIDCD.]. |
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Authors:
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Christopher A Brown; William A Yost |
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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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Dept. of Speech and Hearing Sci. Arizona State Univ., P.O. Box 870102, Tempe, AZ 85287-0102. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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