The Effect of Helmet Form on Hearing: Speech Intelligibility and Sound Localization

Abstract

RD H. ;HEL-TN-10-72(*helmets, *hearing), (*speech recognition, helmets), intelligibility, audiometry, army personnel, human factors engineering, army research*intelligibility, *speech recognition The report presents the results of an investigation of the effects of a standard and of an experimental helmet on speech intelligibility and sound localization. Eight enlisted men with no hearing deficits were used as subjects. Intelligibility was tested with the American Standard Method for Measurement of Monosyllabic Word Intelligibility. Localization error was determined for three groups of noise bands one octave wide with center frequencies of 250, 2000 and 8000 Hz. There were no practical differences between the two helmets, nor between the bareheaded and helmeted conditions with either helmet.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1972
Accession Number
AD0754581

Entities

People

  • Howard H. Holland
  • R. Bradley Randall

Organizations

  • Human Engineering Laboratory

Tags

Communities of Interest

  • Biomedical
  • Ground and Sea Platforms
  • Human Systems
  • Weapons Technologies

DTIC Thesaurus Topics

  • Amplifiers
  • Behavioral Sciences
  • Biological Sciences
  • Computer Science
  • Ear
  • Engineering
  • Frequency
  • Health Services
  • Human Factors Engineering
  • Intelligibility
  • Measurement
  • Medical Personnel
  • Military Research
  • Psychology
  • Speech
  • Standards
  • United States Military Academy

Readers

  • Instructional Design and Training Evaluation.
  • Military Engineering.
  • Speech Processing/Speech Recognition.

Technology Areas

  • AI & ML