i think pappenheimer is interested in text-to-speech. it still is very hard to make that sound natural.
pitch,
switch,
stretch,
crunch
that row of sounds
depending the melody of the sentence
(question,
answer,
ironic note),
the voice,
whispering,
shouting,
and other ingredients of the actor's mood?
some text-to-speech solutions support such things but depending on your expectations the results may not be very satisfying. if you don't mind that it sounds a bit robotic you should definitely experiment with it. i think there are plugins already for gamestudio. you can also try out narrator.exe which comes with windows to get an idea what it sounds like.