When I was a kid there were a lot of ventriloquist's acts on TV, like the delightful Paul Winchell and Jerry Mahony. I finally got a book from the library on the topic so I could learn the secret of throwing my voice. I was shocked to lean the entire art is talking without moving your lips, with a bit of breath control. It was a gyp! But as I came to realize, the secret is not so much vocal trickery as it is a specialized form of acting. the ventriloquist gets you to believe the dummy is talking, and he provides the soundtrack for your consensual fantasy.You know its a fake, but you enter into the act.