MODULATE

verb (-lated; -lating) see: mete Date: 1615 transitive verb to tune to a key or pitch, to adjust to or keep in proper measure or proportion ; temper , to vary the amplitude, frequency, or phase of (a carrier wave or a light wave) for the transmission of information (as by radio), intransitive verb to play or sing with modulation, to pass from one musical key into another by means of intermediary chords or notes that have some relation to both keys, to pass gradually from one state to another, modulator noun modulatory adjective