Source : Webster's Revised Unabridged Dictionary (1913)
Modulate \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.
Source : WordNet®
modulated
adj 1: changed or adjusted to be suitable [ant: {unmodulated}]
2: altered in volume as well as tone or pitch