1. The act or process of modulating. 2. The state of being modulated. 3.Musica. A passing or transition from one key or tonality to another. b. The result of such a transition. 4a. A change in stress, pitch, loudness, or tone of the voice; an inflection of the voice. b. An instance of such a change or an inflection. 5. The harmonious use of language, as in poetry or prose. 6.Electronics The variation of a property of an electromagnetic wave or signal, such as its amplitude, frequency, or phase.
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