Festival is a speech synthesis system.  It can be found at http://www.cstr.ed.ac.uk/projects/festival/
or http://www.speech.cs.cmu.edu/festival/ .

Festival is used as the speech synthesizer for [Festtcl] and TkFestival [http://tkfestival.sourceforge.net]

The Festival distribution includes several voices in English (American and British accents).  Other
voices for English, Spanish, French, German, etc. can be found at:

   * http://www.cslu.ogi.edu/tts/download/index.html
   * http://hts.sp.nitech.ac.jp/
   * http://www.festvox.org/cmu_arctic/index.html
   * http://tcts.fpms.ac.be/synthesis/mbrola.html

Also see: [CSLU Toolkit], [Rsynth], [Speech Synthesis, or Talk to me Tcl]