Accession Number : ADD003188

Title :   Helium Speech Unscrambler with Pitch Synchronization.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Dildy,Clell A , Jr

Report Date : 13 Apr 1976

Pagination or Media Count : 9

Abstract : The patent describes a pitch synchronized helium speech unscrambler including a pair of bucket brigade analog delay lines which are timely and rapidly loaded with the electrical signal equivalents of human voice signals that are effectively supplied thereto by a receiving transducer. Said voice signal equivalents are then respectively unloaded more slowly from said pair of bucket brigade delay lines than they were loaded therein by a pair of different frequency clock generators driven in alternate successions by preprogrammed signals divided out from a master oscillator and in synchronism with a predetermined pitch portion of the speech signal received by said receiving transducer. The unloaded signals are then broadcast as acoustical voice signals by a transmitting transducer.

Descriptors :   *Decoders, *Patents, Speech, Helium, Signal processing, Delay lines, Analog systems, Charge transfer, Synchronism

Subject Categories : Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE