| Perception of temporally interrupted speech: Effects of two concurrent gating rates on intelligibility. | |
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MedLine Citation:
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PMID: 20331039 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Perception of temporally interrupted speech was investigated with either one or two concurrent square-wave gating functions. Sentences were interrupted at a single rate of 1, 2, 4, 8, 16, 24, or 32 Hz with a 50% duty cycle. For each rate between 1 to 8 Hz, stimuli were additionally gated at a secondary rate ranging from twice the primary rate up to 32 Hz. The secondary gating rate thus interrupted only the segments of speech which were left intact after application of the primary gating function to reduce by half the remaining speech content independent of secondary rate. With a single gating function, intelligibility scores increased with rate, reaching perfect accuracy at 8 Hz. Application of the second gating function led to a decrease in intelligibility which was greatest when the secondary rate was twice the primary rate, a condition equivalent to a 25% duty cycle of the primary rate. Further increase in the secondary rate generally led to an improvement in intelligibility, although never to the level achieved with the primary rate alone. The incomplete recovery of intelligibility scores at fast secondary gating rates suggest disruption of separate perceptual processes by each of the two concurrent interruption rates. |
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Authors:
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Valeriy Shafiro; Stanley Sheft; Robert Risley |
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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: 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: - 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: 1991 Citation Subset: IM |
Affiliation:
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Comm. Dis. Sci., Rush Univ. Med. Cntr., 1015 AAC, 600 S. Paulina St., Chicago, IL 60612, valeriy_shafiro@rush.edu. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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