In addition to face, we are also able to identify an acquaintance or stranger by his/her voice. Put in a different way, in environment not talking with each other face to face, we can cheat or joke with our friends through voice imitation.
Voice/video chat is already not a new thing now. But if we could add a bit of whimsy into it, such as voice morphing, that would make the chat game more interesting. In order to achieve this effect, you may already know that the classic and famous AV Voice Changer Software can do it for us.