| Stimulus factors influencing spatial release from speech-on-speech masking. | |
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MedLine Citation:
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PMID: 20968368 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This study examined spatial release from masking (SRM) when a target talker was masked by competing talkers or by other types of sounds. The focus was on the role of interaural time differences (ITDs) and time-varying interaural level differences (ILDs) under conditions varying in the strength of informational masking (IM). In the first experiment, a target talker was masked by two other talkers that were either colocated with the target or were symmetrically spatially separated from the target with the stimuli presented through loudspeakers. The sounds were filtered into different frequency regions to restrict the available interaural cues. The largest SRM occurred for the broadband condition followed by a low-pass condition. However, even the highest frequency bandpass-filtered condition (3-6 kHz) yielded a significant SRM. In the second experiment the stimuli were presented via earphones. The listeners identified the speech of a target talker masked by one or two other talkers or noises when the maskers were colocated with the target or were perceptually separated by ITDs. The results revealed a complex pattern of masking in which the factors affecting performance in colocated and spatially separated conditions are to a large degree independent. |
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Authors:
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Gerald Kidd; Christine R Mason; Virginia Best; Nicole Marrone |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 128 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2010 Oct |
Date Detail:
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Created Date: 2010-10-25 Completed Date: 2011-02-11 Revised Date: 2012-04-27 |
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: 1965-78 Citation Subset: IM |
Affiliation:
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Department of Speech, Language and Hearing Sciences, and Hearing Research Center, Boston University, Boston, Massachusetts 02215, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation Adult Audiometry Auditory Pathways / physiology* Auditory Threshold Cues* Humans Perceptual Masking* Psychoacoustics Signal Detection, Psychological* Speech Perception* Time Factors Young Adult |
| Grant Support | |
ID/Acronym/Agency:
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DC00100/DC/NIDCD NIH HHS; DC004453/DC/NIDCD NIH HHS; DC004545/DC/NIDCD NIH HHS; DC004663/DC/NIDCD NIH HHS; R01 DC000100-36/DC/NIDCD NIH HHS |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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