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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(More)
are available. So are the reasons for apparent obscurities. An allergic could eat lobsters caught north of Cape Cod but not those caught south of that point. The difference lay in the food supply of(More)
PCM, pulse code modulation, is a new solution to the problem of overcrowded frequency spectrum. It appears to have exceptional possibilities from the standpoint of freedom from interference, and(More)
I AM DEEPLY HONORED and grateful to be awarded the 1957 Lamme medal. Throughout the years, the high prestige and importance of this award have been augmented by the outstanding creativeness and(More)