Accession Number : ADD000088
Title : Voice Privacy System.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Allen,Craig R ; Celto,John E
Report Date : 04 Dec 1973
Pagination or Media Count : 9
Abstract : In the patented system a selected bandwidth of speech frequencies is divided into a plurality of sub-bands and each sub-band is processed in a 'Weaver modulator' type of circuit for filtering, frequency translation, and inversion. The sub-bands which have undergone frequency translation are then combined to provide a scrambled output which is transmitted to a receiver where the converse processing of the scrambled signals including filtering, frequency translation, and inversion is accomplished to produce the original speech modulated input.
Descriptors : *Speech scrambling, *Patents, Voice communications, Security
Subject Categories : Voice Communications
Distribution Statement : APPROVED FOR PUBLIC RELEASE