From The Collaborative International Dictionary of English v.0.48 [gcide]:
Modulate \Mod"u*late\, v. i. (Mus.)
To pass from one key into another.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
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.
[1913 Webster]
2. To vary or inflect in a natural, customary, or musical
manner; as, the organs of speech modulate the voice in
reading or speaking.
[1913 Webster]
Could any person so modulate her voice as to deceive
so many? --Broome.
[1913 Webster]
3. (Electronics) To alter the amplitude, frequency, phase, or
intensity of (the carrier wave of a radio signal) at
intervals, so as to represent information to be conveyed
by the signal; -- a technique used to convey information
by means of radio waves transmitted by one electronic
device and received by another.
[WordNet 1.5]
From WordNet (r) 3.0 (2006) [wn]:
modulate
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)
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