If you're on Mac, you can use `say`, e.g.,
say "This is a test message" --voice="Bubbles"
say "This is a test message" --voice="Organ" say "This is a test message" --voice="Good News" say "This is a test message" --voice="Bad News" say "This is a test message" --voice="Jester"
LOL that's pretty funny, thank you for the share!