| High-level psychophysical tuning curves: simultaneous masking with different noise bandwidths. | |
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MedLine Citation:
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PMID: 2046361 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Simultaneous-masked psychophysical tuning curves were measured with narrow-band noise maskers varying in bandwidth from 40 Hz to 800 Hz to determine the masker bandwidths at which combination-band detection cues no longer influence tuning-curve shapes. Tuning curves were obtained at 1000 and 4000 Hz from normal-hearing listeners using high-level (60 dB SPL) probe tones in quiet and in the presence of a broadband background noise to eliminate combination bands and other off-frequency listening cues that exist at high levels. High-level tuning curves revealed notches on the low-frequency sides. Those notches were eliminated with broad-band background noise, which indicates that combination bands can strongly influence the shapes of high-level tuning curves obtained with narrow-band maskers, primarily by steepening the low-frequency and tail slopes. Combination-band detection cues had a stronger influence at 4000 Hz than at 1000 Hz. As masker bandwidth increased, combination bands had less influence on tuning-curve shapes. These results suggest a possible relation between masker bandwidth and auditory critical bandwidth: combination bands affected the low-frequency sides of the tuning curves only when the masker bandwidth was less than the auditory critical bandwidth. |
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Authors:
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D A Nelson; T W Fortune |
Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Journal of speech and hearing research Volume: 34 ISSN: 0022-4685 ISO Abbreviation: J Speech Hear Res Publication Date: 1991 Apr |
Date Detail:
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Created Date: 1991-07-18 Completed Date: 1991-07-18 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 0376336 Medline TA: J Speech Hear Res Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 374-8 Citation Subset: IM |
Affiliation:
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Department of Otolaryngology, University of Minnesota, Minneapolis. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acoustics Audiometry / methods Hearing / physiology* Hearing Loss, Sensorineural / diagnosis, physiopathology Humans Noise Perceptual Masking / physiology* |
| Grant Support | |
ID/Acronym/Agency:
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DC00110/DC/NIDCD NIH HHS; DC00149/DC/NIDCD NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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