Just after reading this thread i saw a link for Praat program
A free multi platform speech generator which lets you tweak phonetics.
I know this program for ages but never used it.
As a spoiled mac user i extensively use the system voices
But when I run out of them i wll give this surely a try.
Thanks a bunch, Ichikaidan. It looks a quite interesting piece of code.
I'll try it, but from the information and the papers in the site, it seems a very powerful tool more oriented to phonological research than a finished product for a casual user. I tell you I haven't tried yet but guess it expects a phonetics transcription as a input instead of a text in a specific language, say English, French or whatever. Should this be the case, ie being a language agnostic TTS generator, it would be not problem: you could work with any human or alien language you can think of and even try to simulate whatever accent you know.
Very excited about this, being an amateur linguistic BTW.
EDIT: I've just made a first try with Praat, and for sure it's not an user-friendly tool. It's indeed an increndibly powerful and flexible program, but this comes at a price, and that's its complexity and the requirement of a thorough knowledge of phonetics. That's just my first impression and I'll keep trying.