| Real-time contrast enhancement to improve speech recognition. | |
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MedLine Citation:
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PMID: 21949736 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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An algorithm that operates in real-time to enhance the salient features of speech is described and its efficacy is evaluated. The Contrast Enhancement (CE) algorithm implements dynamic compressive gain and lateral inhibitory sidebands across channels in a modified winner-take-all circuit, which together produce a form of suppression that sharpens the dynamic spectrum. Normal-hearing listeners identified spectrally smeared consonants (VCVs) and vowels (hVds) in quiet and in noise. Consonant and vowel identification, especially in noise, were improved by the processing. The amount of improvement did not depend on the degree of spectral smearing or talker characteristics. For consonants, when results were analyzed according to phonetic feature, the most consistent improvement was for place of articulation. This is encouraging for hearing aid applications because confusions between consonants differing in place are a persistent problem for listeners with sensorineural hearing loss. |
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Authors:
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Joshua M Alexander; Rick L Jenison; Keith R Kluender |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural Date: 2011-09-19 |
Journal Detail:
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Title: PloS one Volume: 6 ISSN: 1932-6203 ISO Abbreviation: PLoS ONE Publication Date: 2011 |
Date Detail:
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Created Date: 2011-09-28 Completed Date: 2012-01-30 Revised Date: 2012-05-07 |
Medline Journal Info:
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Nlm Unique ID: 101285081 Medline TA: PLoS One Country: United States |
Other Details:
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Languages: eng Pagination: e24630 Citation Subset: IM |
Affiliation:
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Department of Speech Language and Hearing Sciences, Purdue University, West Lafayette, Indiana, United States of America. alexan14@purdue.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation Algorithms* Analysis of Variance Computer Simulation Female Humans Language Male Noise Signal-To-Noise Ratio Speech Perception / physiology* Time Factors |
| Grant Support | |
ID/Acronym/Agency:
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R01DC04072/DC/NIDCD NIH HHS |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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