DocumentCode
1222124
Title
The Philosophy of PCM
Author
Oliver, B.M. ; Pierce, J.R. ; Shannon, C.E.
Author_Institution
Bell Telephone Laboratories, Inc., New York, N.Y.
Volume
36
Issue
11
fYear
1948
Firstpage
1324
Lastpage
1331
Abstract
Recent papers describe experiments in transmitting speech by PCM (pulse code modulation). This paper shows in a general way some of the advantages of PCM, and distinguishes between what can be achieved with PCM and with other broadband systems, such as large-index FM. The intent is to explain the various points simply, rather than to elaborate them in detail. The paper is for those who want to find out about PCM rather than for those who want to design a system. Many important factors will arise in the design of a system which are not considered in this paper.
Keywords
Fourier series; Frequency modulation; Laboratories; Low pass filters; Modulation coding; Phase change materials; Pulse modulation; Sampling methods; Speech coding; Telephony;
fLanguage
English
Journal_Title
Proceedings of the IRE
Publisher
ieee
ISSN
0096-8390
Type
jour
DOI
10.1109/JRPROC.1948.231941
Filename
1697556
Link To Document