Festival Czech is basically independent on a particular voice, new voices can be created to be used with Festival Czech.
Czech Festival speech synthesis is developed by Brailcom, o.p.s. Nadační fond Českého rozhlasu, Seznam.cz, a.s. and European Commission (the Leonardo da Vinci program) provided financial contributions to the project. Institute of Phonetics at Faculty of Philosophy & Arts, Charles University, Prague, led by prof. PhDr. Zdena Palková, CSc. provided expert knowledge and consultations.