Effects of XM-40 Chemical Protective Mask on Real-Ear Attenuation and Speech Intelligibility Characteristics of the SPH-4 Aviator Helmet

Abstract

Chemical Defense (CD) measures depend primarily on the use of protective clothing and equipment. Adequate protection only can be achieved if each item in the CD ensemble is compatible with every other item. The design or modification of each component must give consideration to its impact on the performance of all items. This study investigated the effects of the XM-40 Chemical Protective (CP) Mask on the protective functions of the SPH-4 aviator helmet. Based on the results it was concluded that the XM-40 compromised the noise attenuation and speech communication functions of the SPH-4. Originator-supplied keywords: Chemical Protective Mask, Real-Ear Attenuation, Speech Intelligibility, Noise, Aviator Helmet, SPH-4, Microphone Position, Hearing Conservation, and Voice Communication.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1985
Accession Number
ADA153848

Entities

People

  • Ben T. Mozo
  • William R. Nelson

Organizations

  • United States Army Aeromedical Research Lab

Tags

Communities of Interest

  • Biomedical
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Army Aviation
  • Biological Sciences
  • Biomedical Research
  • Control Systems
  • Health Services
  • Human Factors Engineering
  • Microphones
  • Military Research
  • New York
  • Protective Equipment
  • Schools
  • Sound Pressure
  • Standards
  • Test And Evaluation
  • United States
  • Universities

Fields of Study

  • Engineering

Readers

  • Auditory Neuroscience/Auditory Physiology.
  • Materials Science
  • Military Engineering.