Accession Number : AD0731123

Title :   Ear Protection Provided by Several Standard Air Force Devices.

Descriptive Note : Final rept. Nov 70-Feb 71,

Corporate Author : SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX

Personal Author(s) : Sutherland,Harrell C. , Jr. ; Gasaway,Donald C. ; Wren,George N.

Report Date : MAY 1971

Pagination or Media Count : 21

Abstract : Sound attenuation achieved with several routinely procured standard Air Force devices was determined with 10 subjects. Devices and their combinations studied were: earplugs, earmuffs, earplugs and earmuffs, communication-type headset-microphone, and headset-microphone with 'dry cotton' in the ear canals. Results indicate that occasionally a need may exist to measure the protection an individual is getting with ear-protective devices. Also, results with the earmuffs were somewhat different from results found at another facility. Attenuation resulting from 'dry cotton' and a headset-microphone in combination suggests the need to investigate speech intelligibility with that condition. (Author)

Descriptors :   (*EAR PROTECTORS, EFFECTIVENESS), ATTENUATION, SOUND, MICROPHONES, EARPHONES, PROTECTION, SPEECH, INTELLIGIBILITY

Subject Categories : Protective Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE