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Dictionary Suite
AM a system of varying a radio signal's amplitude so as to impose the signal on a carrier wave; amplitude modulation. [1/2 definitions]
amplify in electrical terminology, to increase the current, amplitude, voltage, or power of. [1/4 definitions]
modulate to vary the frequency, amplitude, phase, or the like of (an electromagnetic wave). [2/6 definitions]
modulation variation of the frequency, amplitude, phase, or the like of an electromagnetic wave. [1/3 definitions]
phase modulation in radio transmission, variation of the phase of a carrier wave in accordance with the amplitude of a modulating signal such as speech.
wave the form that energy takes when traveling, characterized by periodic oscillation. Energy in the form of heat, light, or sound, for example, travels in the form of waves. Characteristics of such waves include period, frequency, amplitude, and wavelength. [1/14 definitions]