DocumentCode :
1419194
Title :
Devices for controlling amplitude characteristics of telephonic signals
Author :
Norwine, A. C.
Author_Institution :
Bell Telephone Laboratories, Inc., New York, N. Y.
Volume :
58
Issue :
2
fYear :
1939
Firstpage :
62
Lastpage :
67
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 :
Choppers (circuits); Gain; Noise; Propagation losses; Speech; Transducers; Voltage control;
fLanguage :
English
Journal_Title :
Electrical Engineering
Publisher :
ieee
ISSN :
0095-9197
Type :
jour
DOI :
10.1109/EE.1939.6431780
Filename :
6431780
Link To Document :
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