| Simulations of cochlear-implant speech perception in modulated and unmodulated noise. | |
| | |
MedLine Citation:
|
PMID: 20707456 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Experiment 1 replicated the finding that normal-hearing listeners identify speech better in modulated than in unmodulated noise. This modulated-unmodulated difference ("MUD") has been previously shown to be reduced or absent for cochlear-implant listeners and for normal-hearing listeners presented with noise-vocoded speech. Experiments 2-3 presented normal-hearing listeners with noise-vocoded speech in unmodulated or 16-Hz-square-wave modulated noise, and investigated whether the introduction of simple binaural differences between target and masker could restore the masking release. Stimuli were presented over headphones. When the target and masker were presented to one ear, adding a copy of the masker to the other ear ("diotic configuration") aided performance but did so to a similar degree for modulated and unmodulated maskers, thereby failing to improve the modulation masking release. Presenting an uncorrelated noise to the opposite ear ("dichotic configuration") had no effect, either for modulated or unmodulated maskers, consistent with the improved performance in the diotic configuration being due to interaural decorrelation processing. For noise-vocoded speech, the provision of simple spatial differences did not allow listeners to take greater advantage of the dips present in a modulated masker. |
| | |
Authors:
|
Antje Ihlefeld; John M Deeks; Patrick R Axon; Robert P Carlyon |
Related Documents
:
|
604686 - Effects of auditory masking on lip movements during speech. 1513666 - Anatomy of a flash. 2. the 'width' of a temporal edge. 10377976 - Thresholds for masking responses to light in three strains of retinally degenerate mice. 17223296 - Temporal integration in the gerbil: the effects of age, hearing loss and temporally unm... 7228896 - Quantitative studies on the polarization optical properties of living cells. i. microph... 14572106 - Photocatalytic degradation of polystyrene plastic under fluorescent light. |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: The Journal of the Acoustical Society of America Volume: 128 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2010 Aug |
Date Detail:
|
Created Date: 2010-08-16 Completed Date: 2011-01-27 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
|
Languages: eng Pagination: 870-80 Citation Subset: IM |
Affiliation:
|
MRC Cognition and Brain Sciences Unit, 15 Chaucer Road, Cambridge CB2 7EF, United Kingdom. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Acoustic Stimulation Adolescent Adult Audiometry, Pure-Tone Cochlear Implants* Dichotic Listening Tests Humans Male Noise* Perceptual Masking* Recognition (Psychology) Signal Detection, Psychological Speech Perception* Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Speech-on-speech masking with variable access to the linguistic content of the masker speech.
Next Document: Interrupted speech perception: the effects of hearing sensitivity and frequency resolution.