modulate(redirected from Modulations)
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v. mod·u·lat·ed, mod·u·lat·ing, mod·u·lates
1. To regulate or adjust to a certain degree: physiological mechanisms that modulate the body's metabolic rate.
2. To change or vary the pitch, intensity, or tone of (one's voice or a musical instrument, for example).
a. To vary the frequency, amplitude, phase, or other characteristic of (electromagnetic waves).
b. To vary (electron velocity) in an electron beam.
4. Biochemistry To act on (a receptor, for example) as an activator, an inhibitor, or both.
To move from one key or tonality to another by means of a melody or chord progression.
[Latin modulārī, modulāt-, to measure off, to regulate, from modulus, diminutive of modus, measure; see med- in Indo-European roots.]
mod′u·la′tive, mod′u·la·to′ry (-lə-tôr′ē) adj.
1. (tr) to change the tone, pitch, or volume of
2. (tr) to adjust or regulate the degree of
3. (Music, other) music
a. to subject to or undergo modulation in music
b. (often foll by to) to make or become in tune (with a pitch, key, etc)
4. (Electrical Engineering) (tr) physics electronics to cause to vary by a process of modulation
5. (General Physics) (tr) physics electronics to cause to vary by a process of modulation
[C16: from Latin modulātus in due measure, melodious, from modulārī to regulate, from modus measure]
ˈmodulative, ˈmodulatory adj
v. -lat•ed, -lat•ing. v.t.
1. to regulate by or adjust to a certain measure or proportion.
2. to alter or adapt (the voice) according to the circumstances, one's listener, etc.
3. to cause the amplitude, frequency, phase, or intensity of (a carrier wave) to vary in accordance with a sound wave or other signal.v.i.
4. to modulate a carrier wave.
5. to move harmonically from one key to a related key.
mod`u•la•bil′i•ty (-ləˈbɪl ɪ ti) n.
mod′u•la`tive, mod′u•la•to`ry (-ˌtɔr i, -ˌtoʊr i) adj.
To vary the amplitude, frequency, or some other characteristic of electromagnetic waves in a way that makes them correspond to a signal or to information that is to be transmitted.
Past participle: modulated
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|Verb||1.||modulate - change the key of, in music; "modulate the melody"|
music - musical activity (singing or whistling etc.); "his music was his central interest"
|2.||modulate - vary the pitch of one's speech|
|3.||modulate - fix or adjust the time, amount, degree, or rate of; "regulate the temperature"; "modulate the pitch"|
|4.||modulate - adjust the pitch, tone, or volume of|
|5.||modulate - vary the frequency, amplitude, phase, or other characteristic of (electromagnetic waves)|