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