definition of
modulation

[1] #1 modulation n. [transition] a musical passage moving from one key to another. wn

[2] #2 modulation n. (electronics) the transmission of a signal by using it to vary a carrier wave; changing the carrier's amplitude or frequency or phase. wn

[3] #3 modulation n. [intonation, pitch contour] rise and fall of the voice pitch. wn

[4] #4 modulation n. [inflection] a manner of speaking in which the loudness or pitch or tone of the voice is modified. wn

[5] #5 modulation n. the act of modifying or adjusting according to due measure and proportion (as with regard to artistic effect). wn