Title :
Voice frequency tone signalling
Author_Institution :
General Electric Co., Syracuse, N.Y.
fDate :
8/1/1952 12:00:00 AM
Abstract :
In the Radio Communication field, the need for selective signalling devices has been recognized for the past several years, and many devices have been developed to satisfy the need. The devices which are described in this paper are the result of market analysis, experiment, and extensive field testing to make a system of voice-frequency, tone-signalling apparatus which fills substantially the need.
Keywords :
Circuit stability; Communication system control; Control systems; Feedback; Frequency; Radio control; Signal analysis; Signal processing; Speech analysis; System testing;
Journal_Title :
Transactions of the IRE Professional Group on Vehicular Communications
DOI :
10.1109/PGVC.1952.207431
