A Comparison of Speech Intelligibility Characteristics for Earcups Intended for Use in the SPH-4 Helmet,

Abstract

Studies at USAARL have demonstrated significant problems with impact protection in the area of the earcup of the SPH-4 aviator helmet. Efforts to develop a crushable earcup that will attenuate impact have resulted in development of two candidate earcups. This study compares the speech intelligibility (the ability of the aviator to understand oral communication) characteristics of the two prototypes to those of the standard SPH-4 earcup and a proposed replacement earcup identified as the MK-12564. The results indicate that both crushable cups will provide speech intelligibility equal to or better than the standard cup. Keywords: Voice communications. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1986
Accession Number
ADA167406

Entities

People

  • Ben T. Mozo
  • William R. Nelson

Organizations

  • United States Army Aeromedical Research Lab

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Aerospace Medicine
  • Air Force
  • Air Force Facilities
  • Army Aviation
  • Army Training
  • Artillery
  • Aviation Medicine
  • Biological Sciences
  • Biomedical Research
  • Biophysics
  • Engineering
  • Health Services
  • Human Factors Engineering
  • Medical Personnel
  • Military Research
  • Standards
  • Technical Information Centers

Fields of Study

  • Engineering

Readers

  • Computational Fluid Dynamics (CFD)
  • Military Engineering.
  • Speech Processing/Speech Recognition.