Document Detail


The detection of temporal gaps as a function of frequency region and absolute noise bandwidth.
MedLine Citation:
PMID:  1556308     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Temporal gap detection was measured as a function of absolute signal bandwidth at a low-, a mid-, and a high-frequency region in six listeners with normal hearing sensitivity. Gap detection threshold decreased monotonically with increasing stimulus bandwidth at each of the three frequency regions. Given conditions of equivalent absolute bandwidth, gap detection thresholds were not significantly different for upper cutoff frequencies ranging from 600 to 4400 Hz. A second experiment investigated gap detection thresholds at two pressure-spectrum levels, conditions typically resulting in substantially different estimates of frequency selectivity. Estimates of frequency selectivity were collected at the two levels using a notched-noise masker technique. The gap threshold-signal bandwidth functions were almost identical at pressure-spectrum levels of 70 dB and 40 dB for the two subjects in experiment II, while estimates of frequency selectivity showed poorer frequency selectivity at the 70-dB level than at 40 dB. Data from both experiments indicated that gap detection in bandlimited noise was inversely related to signal bandwidth and that gap detection did not vary significantly with changes in signal frequency over the range of 600 to 4400 Hz. Over the range of frequencies investigated, the results indicated no clear relation between gap detection for noise stimuli and peripheral auditory filtering.
Authors:
D A Eddins; J W Hall; J H Grose
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  91     ISSN:  0001-4966     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  1992 Feb 
Date Detail:
Created Date:  1992-05-04     Completed Date:  1992-05-04     Revised Date:  2006-12-27    
Medline Journal Info:
Nlm Unique ID:  7503051     Medline TA:  J Acoust Soc Am     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1069-77     Citation Subset:  IM    
Affiliation:
University of North Carolina, Division of Otolaryngology, Chapel Hill 27599-7070.
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MeSH Terms
Descriptor/Qualifier:
Adult
Attention*
Auditory Threshold
Humans
Loudness Perception*
Noise*
Pitch Discrimination*
Psychoacoustics
Time Perception*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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