modulate

To regulate or adjust to a certain degree.

To change or vary the pitch, intensity, or tone of (one’s voice or a musical instrument, for example).

To vary the frequency, amplitude, phase, or other characteristic of (electromagnetic waves).

To vary (electron velocity) in an electron beam.

To act on (a receptor) as an agonist, antagonist, or both.

To move from one key or tonality to another by means of a melody or chord progression.

To modify; adjust; adapt; regulate.

To vary or inflect the sound or utterance of, especially so as to give expressiveness to what is uttered; vary or adapt in tone.

To vary the pitch of; inflect; melodize.