Flite: a small, fast speech synthesis engine

System documentation

Edition 1.3, for Flite version 1.3

3rd January 2005

by Alan W Black and Kevin A. Lenzo

Copyright © 2001-2005 Carnegie Mellon University, all rights reserved.

Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies.

Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one.

Permission is granted to copy and distribute translations of this manual into another language, under the above conditions for modified versions, except that this permission notice may be stated in a translation approved by the Carnegie Mellon University


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1 Abstract

This document provides a user manual for flite, a small, fast run-time speech synthesis engine.

This manual is nowhere near complete.

Flite offers text to speech synthesis in a small and efficient binary. It is designed for embedded systems like PDAs as well large server installation which must serve synthesis to many ports. Flite is part of the suite of free speech synthesis tools which include Edinburgh University’s Festival Speech Synthesis System http://www.cstr.ed.ac.uk/projects/festival and Carnegie Mellon University’s FestVox project http://festvox.org, which provides tools, scripts, and documentation for building new synthetic voices.

Flite is written in ANSI C, and is designed to be portable to almost any platform, including very small hardware.

Flite is really just a synthesis library that can be linked into other programs, it includes two simple voices with the distribution, an old diphone voice and anb example limited domain voice which uses the newer unit selection techniques we have been developing. Neither of these voices would be considered production voices but server as examples, new voices will be released as they are developed.

The latest versions, comments, new voices etc for Flite are available from its home page which may be found at

http://cmuflite.org

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