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amplitude British & World English

The maximum extent of a vibration or oscillation, measured from the position of equilibrium

amplitude English Thesaurus

the amplitude of the output signal

amplitude modulation British & World English

The modulation of a wave by varying its amplitude, used especially as a means of broadcasting an audio signal by combining it with a radio carrier wave

quadrature amplitude modulation British & World English

A modulation system used in microwave and satellite communication, involving phase and amplitude modulation of a carrier wave