NCJ Number
14631
Date Published
1972
Length
21 pages
Annotation
BASIC DESIGN OF A SYSTEM TO PROVIDE A PRIVACY VOICE CHANNEL WITH AN ACCEPTABLE DEGREE OF INTELLIGIBILITY.
Abstract
THE PROPOSED SYSTEM IS BASICALLY A VOICE INVERSION SYSTEM EMPLOYING A RANDOMLY GENERATED CARRIER FREQUENCY FOR INVERSION. THE RANDOM CARRIER FREQUENCY GENERATOR IS CONTROLLED BY A PROGRAMMABLE, DIGITAL CHARACTER GENERATOR. THE HYBRID SYSTEM IS READILY ADAPTABLE TO PRESENT MILITARY AND CIVILIAN VHF/UHF VOICE COMMUNICATIONS SYSTEMS AT A RELATIVELY LOW COST AND WITH A VERY MINIMUM OF EQUIPMENT MODIFICATION. (AUTHOR ABSTRACT)