Ear Protection Provided by Several Standard Air Force Devices

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.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1971
Accession Number
AD0731123

Entities

People

  • Donald C. Gasaway
  • George N. Wren
  • Harrell C. Jr Sutherland

Organizations

  • United States Air Force School of Aerospace Medicine

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Anechoic Chambers
  • Attenuation
  • Attenuators
  • Basic Training
  • Biomedical Research
  • Ear
  • Frequency
  • Frequency Response
  • Hearing Disorders
  • Hearing Loss
  • Human Factors Engineering
  • Microphones
  • Short Takeoff Aircraft
  • Speech
  • Standards

Readers

  • Acoustics.
  • Aerospace logistics and air mobility.
  • Materials Science