Modulate - Definition

v 1: change the key of, in music; "modulate the melody"
2: vary the pitch of one's speech [syn: tone, inflect,
modulate]
3: fix or adjust the time, amount, degree, or rate of; "regulate
the temperature"; "modulate the pitch" [syn: regulate,
modulate]
4: adjust the pitch, tone, or volume of
5: vary the frequency, amplitude, phase, or other characteristic
of (electromagnetic waves)