Accession Number : AD0667959

Title :   SOUND ATTENUATION CHARACTERISTICS OF THE NAVY BPH-2 HELMET,

Corporate Author : ARMY AEROMEDICAL RESEARCH UNIT FORT RUCKER ALA

Personal Author(s) : Camp,Robert T. , Jr

Report Date : MAR 1968

Pagination or Media Count : 25

Abstract : An evaluation of the real-ear sound attenuation characteristics of the Navy BPH-2 helmet was done with procedures and equipment specified by ASA Z24.22-1957. The results show that the BPH-2 has acoustical characteristics superior to the standard Army APH-5 at frequencies from 125 Hz through 1000 Hz. In view of the high attenuation in the speech communications spectrum, it is recommended that this helmet be considered for use by the U. S. Army. (Author)

Descriptors :   (*HELMETS, *EAR PROTECTORS), SOUND, ATTENUATION, HEARING, PROTECTION, PSYCHOACOUSTICS, PERFORMANCE(ENGINEERING), AVIATION MEDICINE, VERY HIGH FREQUENCY, ULTRAHIGH FREQUENCY

Subject Categories : Protective Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE