TRANSDUCER AND INTERPHONE SYSTEM FOR OPERATION IN HIGH-AMBIENT NOISE.

Abstract

This report describes work performed toward development of a voice communication system for military vehicles. A literature survey of past efforts pertinent to the present program was performed and the results are reported. Two approaches toward picking up speech in high ambient noise are described, namely, the pressure-gradient (noise-cancelling) and contact transducers. Design factors of ear cushions as well as shortcomings of present models are discussed. Criteria for determining maximum safe noise level at the ears is included. A noise study was performed in the M114 and XM577 armored vehicle. Data are presented and conclusions are drawn concerning level and spectrum of the measured noise. (Author)

Document Details

Document Type
Technical Report
Publication Date
Oct 30, 1964
Accession Number
AD0457161

Entities

People

  • A. J. Rosenheck

Tags

DTIC Thesaurus Topics

  • Ambient Noise
  • Armored Vehicles
  • Communication Systems
  • Literature Surveys
  • Military Vehicles
  • Noise
  • Pressure Gradients
  • Transducers
  • Vehicles
  • Voice Communications

Readers

  • Acoustics.
  • Systems Analysis and Design