Title :
Devices for Controlling Amplitude Characteristics of Telephonic Signals
Author_Institution :
Member of the technical staff of the Bell Telephone Laboratories, Inc., New York, N. Y.
Abstract :
This paper describes a family of devices which automatically respond to signals and control the circuit amplification in such a way as to improve transmission. Their general characteristics are outlined, their differences explained, and some of their applications are listed.
Keywords :
Amplitude modulation; Auditory systems; Automatic control; Electron tubes; Signal processing; Silicon carbide; Telephony;
Journal_Title :
American Institute of Electrical Engineers, Transactions of the
DOI :
10.1109/T-AIEE.1939.5057924
