The Effect of Earplugs on Passenger Speech Reception in Rotary-Wing Aircraft,

Abstract

Direct person-to-person speech communication is sometimes required in rotary-wing aircraft where high levels of noise make the use of hearing protective devices desirable. The question arises as to what effect earplugs would have on the intelligibility of speech in rotary-wing aircraft. Intelligibility test data obtained in flight as well as in a simulated flight situation indicate that the use of earplugs in rotary-wing aircraft will improve the reception of direct person-to-person speech communication. Moreover, their use will afford protection against the deafening, fatigue, and annoyance effects of the hazardous noise present in rotary-wing aircraft. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Oct 27, 1970
Accession Number
AD0716768

Entities

People

  • Carl E. Williams
  • John R. Forstall
  • Ward C. Parsons

Organizations

  • Naval Aerospace Medical Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Biomedical
  • Human Systems

DTIC Thesaurus Topics

  • Aircraft Noise
  • Aircrafts
  • Audio Amplifiers
  • Automated Speech Recognition
  • Biomedical Research
  • Flight
  • Intelligibility
  • Laboratory Tests
  • Level Flight
  • Noise
  • Passengers
  • Recording Systems
  • Rotary Wing Aircraft
  • Schematic Diagrams
  • Speech
  • Tape Recorders
  • Word Lists

Readers

  • Acoustics.
  • Systems Analysis and Design