Why does Palpatines voice change?
In Revenge of the sith, when Palpatine got his face disfigured, his voice changed as well the way he looked. His voice sounded more like it does in ROTJ. Why is this? I know it was probably done so he'd sound more like he does in Episode VI, but was the logical reason in the story for it happening? surely getting a messed up face wouldn't change your voice as well would it?