Modulation
Part of speech: noun
Definition: The process of applying a signal to a carrier, modulating. Methods of modulating.
Intonation
Part of speech: noun
Definition: The act of sounding the tones of the musical scale.Singing or playing in good tune or otherwise; as, her intonation was false.Reciting in a musical prolonged tone; intonating or singing of the opening phrase of a plain-chant, psalm, or canticle by a single voice, as of a priest.A thundering; thunder.
Example sentence: I just wanted to show people - maybe I'm wrong - that I can still really sing. I can sing better than I ever have before. My intonation is way better, my timing, my phrasing - there's a lot more expression; I feel it's a more lived-in, soulful voice.