Accession Number : AD0716356

Title :   Evaluation of Gundefender Earplug: Temporary Threshold Shift Reduction and Speech Intelligibility.

Descriptive Note : Interim rept.,

Corporate Author : ARMY MEDICAL RESEARCH LAB FORT KNOX KY

Personal Author(s) : Mosko,James D. ; Fletcher,John L.

Report Date : 09 OCT 1970

Pagination or Media Count : 11

Abstract : Prototypes of the Sonex 'Gundefender' earplug were evaluated with reference to the ear protection capabilities of the earplug and the speech intelligibility scores obtained in both noise and quiet conditions. The medical standard V.51R earplug was used as a comparison unit. A temporary threshold shift reduction method was used for the comparison of protective capabilities. Magnetic recordings of the Modified Rhyme Test were used to obtain the speech intelligibility data. (Author)

Descriptors :   (*HEARING, PROTECTION), (*MEDICAL EQUIPMENT, HEARING), SPEECH, INTELLIGIBILITY, NOISE, THRESHOLDS(PHYSIOLOGY), AUDIOMETRY, PSYCHOACOUSTICS

Subject Categories : Protective Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE