DocumentCode :
1381376
Title :
A speakerphone system for large conference rooms
Author :
Huggler, Luther R.
Author_Institution :
Bell Telephone Company of Pennsylvania, Pittsburgh, Pa.
Volume :
80
Issue :
3
fYear :
1961
fDate :
7/1/1961 12:00:00 AM
Firstpage :
237
Lastpage :
240
Abstract :
Executives of various large corporations, for more than 20 years, continued to request some type of universal hands-free telephone service for their sizable conference rooms. Their objective was to be able to hold important consultations between conferees within such rooms and an absent person or persons located at some distant place but accessible to the conference by telephone connections.
Keywords :
Gain control; Microphones; Noise; Propagation losses; Speech; Switches; Voltage control;
fLanguage :
English
Journal_Title :
American Institute of Electrical Engineers, Part I: Communication and Electronics, Transactions of the
Publisher :
ieee
ISSN :
0097-2452
Type :
jour
DOI :
10.1109/TCE.1961.6373108
Filename :
6373108
Link To Document :
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