MODULATION

Definition

1. noun a musical passage moving from one key to another. — synonyms: transition
2. noun (electronics) the transmission of a signal by using it to vary a carrier wave.
3. noun rise and fall of the voice pitch. — synonyms: intonation, pitch_contour
4. noun a manner of speaking in which the loudness or pitch or tone of the voice is modified. — synonyms: inflection
5. noun the act of modifying or adjusting according to due measure and proportion (as with regard to artistic effect).