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modulation, in communications
(Encyclopedia) CE5 Modulation modulation, in communications, process in which some characteristic of a wave (the carrier wave) is made to vary in accordance with an information-bearing signal wave (the modulatin...Armstrong, Edwin Howard
(Encyclopedia)Armstrong, Edwin Howard, 1890–1954, American engineer and radio inventor, b. New York City, grad. Columbia (E.E. 1913). He was associated in research with Michael I. Pupin at Columbia and became pro...modulation, in music
(Encyclopedia)modulation, in music, shift in the key center of a composition. For its accomplishment use is made of the fact that each chord figures in the harmonic relationships of several keys. In modulating from...radio frequency
(Encyclopedia)radio frequency, range of electromagnetic waves with a frequency or wavelength suitable for communication uses. Some of these waves serve as carriers of the lower-frequency audio waves; others are mod...phase modulation
(Encyclopedia)phase modulation: see modulation. ...pulse code modulation
(Encyclopedia)pulse code modulation: see modulation. ...pulse position modulation
(Encyclopedia)pulse position modulation: see modulation. ...frequency modulation
(Encyclopedia)frequency modulation: see modulation; radio. ...amplitude modulation
(Encyclopedia)amplitude modulation: see modulation; radio. ...static
(Encyclopedia)static, term formerly use to describe electrical noise in radio reception, especially noise that originates outside a transmitter and receiver, e.g., in the atmosphere or in human-made devices. In gen...Browse by Subject
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