Festival text to speech

festival> (set! utt1 (Utterance Text "fooobar")) #<Utterance 0xb75a1f48> festival> (utt.synth utt1) #<Utterance 0xb75a1f48> festival> (utt.play utt1) #<Utterance 0xb75a1f48>

http://www.cstr.ed.ac.uk/projects/festival/manual/festival_7.html#SEC19