Accession Number : ADD007806

Title :   Sonic Transducer.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Hagood,Jerry W ; Norman,Ralph L

Report Date : 25 Jul 1980

Pagination or Media Count : 9

Abstract : A sonic transducer device for vibrating windows and glass partitions in the human ear sensitivity range to prevent the capture of conversation by placing an interfering vibration on the windows or glass partitions. (Author)

Descriptors :   *Patent applications, *Area security, *Secure communications, Noise jammers, Vibration, Windows, Piezoelectric transducers

Subject Categories : Countermeasures

Distribution Statement : APPROVED FOR PUBLIC RELEASE