Main Entry: mod·u·la·tion

Pronunciation: \ˌmä-jə-ˈlā-shən\

Function: noun

Date: 1501

1 : an inflection of the tone or pitch of the voice; specifically : the use of stress or pitch to convey meaning
2 : a regulating according to measure or proportion : tempering
3 : a change from one musical key to another by modulating
4 : the process of modulating a carrier or signal (as in radio); also : the result of this process