Document Detail

On application of adaptive decorrelation filtering to assistive listening.
MedLine Citation:
PMID:  11863164     Owner:  NLM     Status:  MEDLINE    
This paper describes an application of the multichannel signal processing technique of adaptive decorrelation filtering to the design of an assistive listening system. A simulated "dinner table" scenario was studied. The speech signal of a desired talker was corrupted by three simultaneous speech jammers and by a speech-shaped diffusive noise. The technique of adaptive decorrelation filtering processing was used to extract the desired speech from the interference speech and noise. The effectiveness of the assistive listening system was evaluated by observing improvements in A-weighted signal-to-noise ratio (SNR) and in sentence intelligibility, where the latter was evaluated in a listening test with eight normal hearing subjects and three subjects with hearing impairments. Significant improvements in SNR and sentence intelligibility were achieved with the use of the assistive listening system. For subjects with normal hearing, the speech reception threshold was improved by 3 to 5 dBA, and for subjects with hearing impairments, the threshold was improved by 4 to 8 dBA.
Yunxin Zhao; Kuan-Chieh Yen; Sig Soli; Shawn Gao; Andy Vermiglio
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  111     ISSN:  0001-4966     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  2002 Feb 
Date Detail:
Created Date:  2002-02-26     Completed Date:  2002-03-29     Revised Date:  2006-12-27    
Medline Journal Info:
Nlm Unique ID:  7503051     Medline TA:  J Acoust Soc Am     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1077-85     Citation Subset:  IM    
Department of Computer Engineering and Computer Science, University of Missouri-Columbia, 65211, USA.
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MeSH Terms
Acoustic Stimulation / instrumentation
Equipment Design
Hearing Aids
Speech Perception / physiology*
Speech Reception Threshold Test

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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