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