| Speech localization in a multitalker mixture. | |
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MedLine Citation:
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PMID: 20329845 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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An experiment was performed that measured, for the frontal audio-visual horizon, how accurately listeners could localize a female-voice target amidst four spatially distributed male-voice maskers. To examine whether listeners can make use of a priori knowledge about the configuration of the sources, performance was examined in two conditions: either the masker locations were fixed (in one of five known patterns) or the locations varied from trial to trial. The presence of maskers disrupted speech localization, even after accounting for reduced target detectability. Averaged across all target locations, the rms error in responses decreased by 20% when a priori knowledge about masker locations was available. The effect was even stronger for the target locations that did not coincide with the maskers (error reduction of 36%), while no change in errors was observed for targets coinciding with maskers. The benefits were reduced when the target-to-masker intensity ratio was increased or when the maskers were in a pattern that made it difficult to make use of the a priori information. The results confirm that localization in speech mixtures is modified by the listener's expectations about the spatial arrangement of the sources. |
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Authors:
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Norbert Kopco; Virginia Best; Simon Carlile |
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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 |
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 Mar |
Date Detail:
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Created Date: 2010-03-24 Completed Date: 2010-06-17 Revised Date: 2011-07-25 |
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: 1450-7 Citation Subset: IM |
Affiliation:
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Department Of Cybernetics and AI, Technical University of Kosice, Kosice 04001, Slovakia. kopco@bu.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 Female Humans Male Middle Aged Perceptual Masking / physiology* Phonetics Sound Localization / physiology* Speech Perception / physiology* Young Adult |
| Grant Support | |
ID/Acronym/Agency:
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R03 TW007640/TW/FIC NIH HHS |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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