| Effect of fast-acting compression on modulation detection interference for normal hearing and hearing impaired listeners. | |
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MedLine Citation:
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PMID: 20550264 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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To determine the effects of hearing loss and fast-acting compression on auditory grouping based on across-frequency modulation, modulation detection interference (MDI) was measured in listeners with normal hearing and hearing loss. MDI, the increase in the amplitude-modulation detection threshold of a target presented with an interferer distant in frequency, was measured using a 500-Hz target and a 2140-Hz interferer, both modulated with narrow-band noises of the same bandwidth. The two modulated tones were presented at equal loudness levels to listeners with normal hearing and hearing loss in the absence (Exp. 1) and in the presence (Exp. 2) of fast-acting compression applied to the interferer. Modulation detection thresholds increased with increasing modulation depth of the interferer by similar amounts for the two groups of listeners, suggesting that across-frequency grouping based on amplitude modulation is not altered by hearing impairment. Compression provided an additional increase in thresholds for both groups, indicating that compression algorithms might alter across-frequency grouping cues. Partial support for an idea that compression's effect of sharpening the onsets after each envelope valley is provided by a third experiment which found somewhat greater interference produced by square-wave modulation than sine-wave modulation at larger interferer modulation depths. |
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Authors:
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Yi Shen; Jennifer J Lentz |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
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 Jun |
Date Detail:
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Created Date: 2010-06-16 Completed Date: 2010-10-19 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: 3654-65 Citation Subset: IM |
Affiliation:
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Department of Speech and Hearing Sciences, Indiana University, Bloomington, Indiana 47405-7000, USA. shen2@indiana.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation Adult Aged Algorithms Analysis of Variance Audiometry Auditory Perception* Auditory Threshold Cues Female Hearing Disorders* Humans Male Middle Aged Psychoacoustics Signal Detection, Psychological |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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