Modulation is when you control or adjust something, like when you lower your voice to a loud whisper in order to make what you're saying more dramatic and mysterious.

The noun modulation has several meanings, including a change of key in music or of the sound of a person's voice. It almost always involves some kind of deliberate modification or slight change, like an actor adjusting his pitch or volume depending on the role he's playing or the mood of the scene. The Latin root, modulationem, has a musical meaning: "rhythm, singing and playing, or melody."

Definitions of modulation
  1. noun
    the act of modifying or adjusting according to due measure and proportion (as with regard to artistic effect)
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    type of:
    alteration, revision
    the act of revising or altering (involving reconsideration and modification)
  2. noun
    a manner of speaking in which the loudness, pitch, or tone of the voice is modified
    synonyms: inflection
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    type of:
    delivery, manner of speaking, speech
    your characteristic style or manner of expressing yourself orally
  3. noun
    rise and fall of the voice pitch
    synonyms: cadence, intonation, pitch contour
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    intonation pattern
    intonations characteristic of questions and requests and statements
    drone, droning, monotone
    an unchanging intonation
    a regular and monotonous rising and falling intonation
    type of:
    inflection, prosody
    the patterns of stress and intonation in a language
  4. noun
    a musical passage moving from one key to another
    synonyms: transition
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    type of:
    musical passage, passage
    a short section of a musical composition
  5. noun
    (electronics) the transmission of a signal by using it to vary a carrier wave; changing the carrier's amplitude or frequency or phase
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    show 5 types...
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    AM, amplitude modulation
    modulation of the amplitude of the (radio) carrier wave
    FM, frequency modulation
    modulation of the frequency of the (radio) carrier wave
    PM, phase modulation
    modulation of the phase of the carrier wave
    pulse modulation
    modulation that imposes a signal on a train of pulses
    pulse-time modulation
    modulation of the time between successive pulses
    type of:
    communication by means of transmitted signals
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