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


Personal Author(s) : Nixon, Charles W ; Decker, William H


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a265498.pdf


Report Date : Aug 1985


Pagination or Media Count : 53


Abstract : The voice communications effectiveness of the all-purpose MCU-2/P chemical defense protective mask for use by all ground personnel was evaluated in a laboratory study. Speech intelligibility was measured for the MCU-2/P 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-2/P 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)


Descriptors :   *DEFENSE SYSTEMS , *CHEMICAL ORDNANCE , *PROTECTIVE MASKS , *VOICE COMMUNICATIONS , MILITARY PERSONNEL , AUDIO FREQUENCY , HOODS , TELEPHONE EQUIPMENT , SPEECH ARTICULATION , SOUND PRESSURE , NOISE(SOUND) , HAND HELD


Subject Categories : Logistics, Military Facilities and Supplies
      Chemical, Biological and Radiological Warfare
      Acoustics
      Protective Equipment


Distribution Statement : APPROVED FOR PUBLIC RELEASE