Document Detail

The relative impact of generic head-related transfer functions on auditory speech thresholds: implications for the design of three-dimensional audio displays.
MedLine Citation:
PMID:  11471905     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Auditory speech thresholds were measured in this study. METHODS: Subjects were required to discriminate a female voice recording of three-digit numbers in the presence of diotic speech babble. The voice stimulus was spatialized at 11 static azimuth positions on the horizontal plane using three different head-related transfer functions (HRTFs) measured on individuals who did not participate in this study. The diotic presentation of the voice stimulus served as the control condition. RESULTS: The results showed that two of the HRTFS performed similarly and had significantly lower auditory speech thresholds than the third HRTF. All three HRTFs yielded significantly lower auditory speech thresholds compared with the diotic presentation of the voice stimulus, with the largest difference at 60 degrees azimuth. CONCLUSION: The practical implications of these results suggest that lower headphone levels of the communication system in military aircraft can be achieved without sacrificing intelligibility, thereby lessening the risk of hearing loss.
G R Arrabito; S M McFadden; R B Crabtree
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Aviation, space, and environmental medicine     Volume:  72     ISSN:  0095-6562     ISO Abbreviation:  Aviat Space Environ Med     Publication Date:  2001 Jul 
Date Detail:
Created Date:  2001-07-26     Completed Date:  2001-12-11     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7501714     Medline TA:  Aviat Space Environ Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  624-31     Citation Subset:  IM; S    
Defence and Civil Institute of Environmental Medicine, Toronto, Ontario, Canada.
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MeSH Terms
Acoustics / instrumentation
Aerospace Medicine
Aircraft / instrumentation
Analysis of Variance
Auditory Threshold*
Aviation / instrumentation
Deafness / etiology
Speech Intelligibility* / physiology
Task Performance and Analysis
Telecommunications / instrumentation*

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

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