Discusses some of the design choices made when writing Festival's unit selection engine (Multisyn) and the tools for building new voices.
Robert A.J. Clark, Korin Richmond, and Simon King. “Festival 2 – build your own general purpose unit selection speech synthesiser” In Proc. 5th ISCA workshop on speech synthesis (SSW5), pages 173-178, Pittsburgh, PA, USA, June 2004.