DocumentCode
1030053
Title
Pulse Code Modulation
Author
Black, H.S. ; Edson, J.O.
Author_Institution
High frequency transmission engineer, transmission development department, Bell Telephone Laboratories, Inc., New York, N. Y.
Volume
66
Issue
1
fYear
1947
Firstpage
895
Lastpage
899
Abstract
A radically new modulation technique for multichannel telephony has been developed which involves the conversion of speech waves into coded pulses. An 8-channel system employing pulse code modulation (PCM) and embodying these principles was produced. The method appears to have exceptional possibilities from the standpoint of freedom from interference, but its full significance in connection with future radio and wire transmission may take some time to reveal.
Keywords
Amplitude modulation; Frequency; Interference; Modulation coding; Phase change materials; Pulse modulation; Sampling methods; Speech; Telephony; Wire;
fLanguage
English
Journal_Title
American Institute of Electrical Engineers, Transactions of the
Publisher
ieee
ISSN
0096-3860
Type
jour
DOI
10.1109/T-AIEE.1947.5059525
Filename
5059525
Link To Document