▪ vary the strength, tone, or pitch of (one's voice): "we all modulate our voice by hearing it"Similaradjustchange the tone ofvaryinflect
▪ alter the amplitude or frequency of (an electromagnetic wave or other oscillation) in accordance with the variations of a second signal, typically one of a lower frequency: "radio waves are modulated to carry the analog information of the voice"
▪ change from one key to another: "the first half of the melody, modulating from E minor to G"
▪ change from one form or condition into (another):"ideals and opinions are not modulated into authoritative journalese"
Word Originmid 16th century (in the sense ‘intone a song’): from Latin modulat- ‘measured, made melody’, from the verb modulari, from modulus ‘measure’ (see modulus).