TRANSDUCER AND INTERCOMMUNICATION SYSTEM FOR AIR CREWMAN'S PROTECTIVE HEADGEAR,

Abstract

The purpose of the research is to develop a helmet transducer and cordless intercommunication system. As a result of the system analysis of cordless intercommunication, preference for a carrier frequency between 20 and 30 mc, rather than 400 mc, was developed. Also, the desirability of several voice channels for adjacent, but distinctly separate, air crews is evident. Based upon literature study, a technique suited to the present need for evaluation of speech communications in the presence of noise has tentatively been adopted and is described.

Document Details

Document Type
Technical Report
Publication Date
Oct 30, 1964
Accession Number
AD0610478

Entities

People

  • Alfred L. Dimattia
  • Frank L. Ragonese
  • Robert L. Townsend

Tags

DTIC Thesaurus Topics

  • Carrier Frequencies
  • Frequency
  • Headgear
  • Intercommunication Systems
  • Literature
  • Test And Evaluation
  • Transducers

Readers

  • Military Engineering.
  • Radio communications and signal processing.
  • Systems Analysis and Design