Accession Number:

AD0677190

Title:

SOUND ATTENUATION PROVIDED BY PERFORATED EARMUFFS

Descriptive Note:

Corporate Author:

AEROSPACE MEDICAL DIV BROOKS AFB TX

Report Date:

1968-09-01

Pagination or Media Count:

11.0

Abstract:

Sound attenuation characteristics were determined for two types of earmuffs with perforated shells. The muffs had been perforated to allow air pressure equalization when used in a chamber where rapid barometric pressure changes take place in the presence of highly intense noise. It was found that both types of perforated muffs provided a substantial amount of ear protection even though they were not as effective as intact muffs. Author

Subject Categories:

  • Stress Physiology
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE