| Level dependence in behavioral measurements of auditory-filter phase characteristics. | |
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MedLine Citation:
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PMID: 19894830 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Two masking experiments were conducted to behaviorally estimate auditory-filter phase curvatures at different stimulus levels. Maskers were harmonic complexes consisting of equal-amplitude tones and phase spectra with varied curvatures. In Experiment 1, sinusoidal signal thresholds were measured at 2 and 4 kHz at fixed masker levels ranging from 50 to 90 dB sound pressure level (SPL). In Experiment 2, the masker level that just masked a sinusoidal signal at 2 and 4 kHz was measured at fixed signal levels of 25, 38, and 50 dB SPL. For both experiments, the estimated phase curvature approached zero (became less negative) with increasing stimulus level. This shift could suggest that the off-frequency phase characteristic of the auditory filter has an increasingly greater role on the estimated auditory-filter phase curvature at higher stimulus levels. This explanation is supported through the use of psychophysical modeling. |
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Authors:
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Yi Shen; Jennifer J Lentz |
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: 126 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2009 Nov |
Date Detail:
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Created Date: 2009-11-09 Completed Date: 2010-01-28 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: 2501-10 Citation Subset: IM |
Affiliation:
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Department of Speech and Hearing Sciences, Indiana University, Bloomington, IN 47405-7000, USA. shen2@indiana.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation
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methods Adult Auditory Pathways / physiology* Cochlea / physiology* Female Humans Male Models, Neurological* Perceptual Masking / physiology* Psychoacoustics* Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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