VOICE n.
tc., and in the vowels; sonant, or intonated, utterance; tone; -- distinguished from mere breath sound as heard in f, s, sh, etc., and also whisper.
WHISTLE v. 2 definitions
To make a kind of musical sound, or series of sounds, by forcing the breath through a small orifice formed by contracting the lips; also, to emit a similar sound, or series of notes, from the mouth or beak, as birds. The weary plowman leaves the task of day, And, trudging homeward, whistles on the way. Gay.…