Mod"u*late, v. i. (Mus.) To
pass from one key into another.
Mod"u*late (?), v. t. [imp. &
p. p. Modulated (?); p. pr. & vb.
n. Modulating (?).] [L. modulatus, p. p. of
modulari to measure, to modulate, fr. modulus a small
measure, meter, melody, dim. of modus. See Mode.]
1. To form, as sound, to a certain key, or to a
certain portion.
2. To vary or inflect in a natural,
customary, or musical manner; as, the organs of speech
modulate the voice in reading or speaking.
Could any person so modulate her voice as to
deceive so many?
Broome.