Consonant response in narrow band transmission
United States Patent 3069506

Inventors:
Emil, Hopner
Andrews, Maxwell C.
Publication Date:
12/18/1962
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Assignee:
IBM
Primary Class:
International Classes:
H04B1/66
US Patent References:
2708268Sequential phase-shifted amplitude modulated carrier wave
2779020Frequency modulated multiplex systems
2810787Compressed frequency communication system
2874221Stereophonic transmission system