Accession Number:

ADA265498

Title:

Voice Communications Effectiveness of the All-Purpose MCU-2/P Chemical Defense Protective Mask

Descriptive Note:

Technical rept.,

Corporate Author:

HARRY G ARMSTRONG AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OH

Report Date:

1985-08-01

Pagination or Media Count:

53.0

Abstract:

The voice communications effectiveness of the all-purpose MCU-2P chemical defense protective mask for use by all ground personnel was evaluated in a laboratory study. Speech intelligibility was measured for the MCU-2P under face to face communications conditions and when interfaced with a commercial telephone handset, a security police walkie talkie handset and the H-133 ground communications headset-microphone units. These communications configurations were evaluated in selected noise environments that ranged from 77 dB to 115 dB sound pressure level SPL re 20 microns Pa. The MCU-2P mask and hood exhibited good speech intelligibility for all communication configurations in the 77 dB noise condition. However, voice communication was not satisfactory for personnel wearing the mask and hood under the same communications situations in the higher levels of the noise. Factors that contributed to or caused the voice communications to be unsatisfactory are discussed in the report. Author

Subject Categories:

  • Logistics, Military Facilities and Supplies
  • Chemical, Biological and Radiological Warfare
  • Acoustics
  • Protective Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE