Document Detail


Better protection from blasts without sacrificing situational awareness.
MedLine Citation:
PMID:  21288067     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A large number of soldiers returning from war report hearing loss and/or tinnitus. Many deployed soldiers decline to wear their hearing protection devices (HPDs) because they feel that earplugs interfere with their ability to detect and localize the enemy and their friends. The detection problem is easily handled in electronic devices with low-noise microphones. The localization problem is not as easy. In this paper, the factors that reduce situational awareness--hearing loss and restricted bandwidth in HPD devices--are discussed in light of available data, followed by a review of the cues to localization. Two electronic blast plug earplugs with 16-kHz bandwidth are described. Both provide subjectively transparent sound with regard to sound quality and localization, i.e., they sound almost as if nothing is in the ears, while protecting the ears from blasts. Finally, two formal experiments are described which investigated localization performance compared to popular existing military HPDs and the open ear. The tested earplugs performed well regarding maintaining situational awareness. Detection-distance and acceptance studies are underway.
Authors:
Mead C Killion; Tim Monroe; Viorel Drambarean
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  International journal of audiology     Volume:  50 Suppl 1     ISSN:  1708-8186     ISO Abbreviation:  Int J Audiol     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-02-03     Completed Date:  2011-05-09     Revised Date:  2011-10-21    
Medline Journal Info:
Nlm Unique ID:  101140017     Medline TA:  Int J Audiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  S38-45     Citation Subset:  IM    
Affiliation:
Etymotic Research, Inc., Elk Grove Village, Illinois, USA. M_Killion@etymotic.com
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MeSH Terms
Descriptor/Qualifier:
Auditory Pathways / physiopathology
Auditory Threshold
Awareness
Cues
Ear Protective Devices / utilization*
Equipment Design
Explosions*
Head Movements
Health Behavior
Health Knowledge, Attitudes, Practice
Hearing Loss, Noise-Induced / etiology,  physiopathology,  prevention & control*
Humans
Military Medicine*
Military Personnel*
Noise, Occupational / adverse effects*
Occupational Diseases / etiology,  physiopathology,  prevention & control*
Occupational Health Services*
Preventive Health Services*
Sound Localization*
Sound Spectrography
United States
Comments/Corrections
Erratum In:
Int J Audiol. 2011 Oct;50(10):716

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


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