http://www.youtube.com/watch?v=muCPjK4nGY4
It's analog!
Could Vo Power technology....perhaps controled by midi...make a 6-stringed guitar do something like this?
An electro mechanical speech synthesizer.
I'm not as interested in making a guitar "talk" as I am curious about what new effects become possible if an external signal can control when/how guitar strings vibrate in ways that mimic vocal sounds.