TEST OF EAR PROTECTIVE DEVICES. SILENTS.

Abstract

Blast protection and attenuation offered by subject device were slightly inferior to standardized V51R ear protector. For periods of wear of one hour or longer the Silents were uncomfortable and irritating. Universal size arrangement of subject plug is a desirable feature of the subject device. The principle of closing the ear canal entrance rather than depending upon an insert into the canal is desirable, providing a satisfactory acoustic seal is maintained. (Author)

Document Details

Document Type
Technical Report
Publication Date
Oct 15, 1945
Accession Number
AD0655580

Entities

Organizations

  • United States Army Medical Research Laboratory

Tags

DTIC Thesaurus Topics

  • Anatomy
  • Attenuation
  • Biological Sciences
  • Body Regions
  • Ear
  • Head (Anatomy)

Readers

  • Acoustics.
  • Materials Science
  • Systems Analysis and Design