To modulate an activity or process means to alter it so that it is more suitable for a particular situation. These chemicals modulate the effect of potassium. + modulation modulations modu·la·tion The famine turned the normal modulation of climate into disaster
If you modulate your voice or a sound, you change or vary its loudness, pitch, or tone in order to create a particular effect. He carefully modulated his voice
vary the frequency, amplitude, phase, or other characteristic of (electromagnetic waves) adjust the pitch, tone, or volume of change the key of, in music; "modulate the melody
The electronic equipment required to combine video and audio signals from a studio and convert them to radio frequencies (r-f) for distribution on a cable system Also, a very low-powered television signal generator used to provide signals for distribution on a CATV system
A simulated drug or electrolyte, for which an instantaneous preparation-wide serum level may be specified by the user At any particular serum level, a Modulator may influence the behavior of the preparation in one or more of a fixed set of Modulator Effect Modalities
A device which superimposes the amplitude, frequency or phase of a wave or signal onto another wave or signal (a carrier), which is then used to convey the original signal via a transmission medium (e g satellite link)
In FM synthesis and elsewhere, a modulator that is used to modify the output of another operator, creating rich complex tones This process is known as modulation
In wireless microphones, an electronic circuit to superimpose an audio signal on a RF signal, usually by varying its frequency in synchronization with the audio signal Also called an FM modulator
(Video/Audio) An electronic signal processor that combines a video/audio signal with a carrier signal for distribution A later demodulator removes the carrier following transmission to restore the original signal Analogous to radio transmission
modulators
Pronunciation
Etymology
[ 'mä-j&-"lAt ] (verb.) 1615. Latin modulatus, past participle of modulari to play, sing, from modulus small measure, rhythm, diminutive of modus measure; more at METE.