modulate

Universal Words verb 1 [VN] (formal) to change the quality of your voice in order to create a particular effect by making it louder, softer, lower, etc. 2 [V] ~ (from sth) (to / into sth) (music) to change from one musical KEY (= set of notes) to another 3 [VN] (technical) to affect sth so that it becomes more regular, slower, etc: drugs that effectively modulate the disease process 4 [VN] (technical) to change the rate at which a sound wave or radio signal VIBRATES (= the FREQUENCY) so that it is clearer modulation noun [U,C]