| The role of off-frequency masking in binaural hearing. | |
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MedLine Citation:
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PMID: 20550265 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The present studies examined the binaural masking level difference (MLD) for off-frequency masking. It has been shown previously that the MLD decreases steeply with increasing spectral separation between a pure tone signal and a 10-Hz wide band of masking noise. Data collected here show that this reduction in the off-frequency MLD as a function of signal/masker separation is comparable at 250 and 2500 Hz, indicating that neither interaural phase cues nor frequency resolution are critical to this finding. The MLD decreases more gradually with spectral separation when the masker is a 250-Hz-wide band of noise, a result that implicates the rate of inherent amplitude modulation of the masker. Thresholds were also measured for a brief signal presented coincident with a local masker modulation minimum or maximum. Sensitivity was better in the minima for all NoSpi and off-frequency NoSo conditions, with little or no effect of signal position for on-frequency NoSo conditions. Taken together, the present results indicate that the steep reduction in the off-frequency MLD for a narrowband noise masker is due at least in part to envelope cues in the NoSo conditions. There was no evidence of a reduction in binaural cue quality for off-frequency masking. |
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Authors:
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Emily Buss; Joseph W Hall |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 127 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2010 Jun |
Date Detail:
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Created Date: 2010-06-16 Completed Date: 2010-10-19 Revised Date: 2011-07-28 |
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: 3666-77 Citation Subset: IM |
Affiliation:
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Department of Otolaryngology/Head and Neck Surgery, University of North Carolina, School of Medicine, Chapel Hill, North Carolina 27599, USA. ebuss@med.unc.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation Adolescent Adult Auditory Perception* Auditory Threshold Cues Ear Functional Laterality Humans Middle Aged Perceptual Masking* Psychoacoustics Time Factors Young Adult |
| Grant Support | |
ID/Acronym/Agency:
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R01 00397//PHS HHS |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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