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3 Acknowledgements

The code in this system was primarily written by Alan W Black, Paul Taylor and Richard Caley. Festival sits on top of the Edinburgh Speech Tools Library, and uses much of its functionality.

Amy Isard wrote a synthesizer for her MSc project in 1995, which first used the Edinburgh Speech Tools Library. Although Festival doesn't contain any code from that system, her system was used as a basic model.

Much of the design and philosophy of Festival has been built on the experience both Paul and Alan gained from the development of various previous synthesizers and software systems, especially CSTR's Osprey and Polyglot systems taylor91 and ATR's CHATR system black94.

However, it should be stated that Festival is fully developed at CSTR and contains neither proprietary code or ideas.

Festival contains a number of subsystems integrated from other sources and we acknowledge those systems here.

3.1 SIOD

The Scheme interpreter (SIOD -- Scheme In One Defun 3.0) was written by George Carrett (gjc@mitech.com, gjc@paradigm.com) and offers a basic small Scheme (Lisp) interpreter suitable for embedding in applications such as Festival as a scripting language. A number of changes and improvements have been added in our development but it still remains that basic system. We are grateful to George and Paradigm Associates Incorporated for providing such a useful and well-written sub-system.

                       Scheme In One Defun (SIOD)
                       COPYRIGHT (c) 1988-1994 BY 
        PARADIGM ASSOCIATES INCORPORATED, CAMBRIDGE, MASSACHUSETTS.
                           ALL RIGHTS RESERVED

Permission to use, copy, modify, distribute and sell this software
and its documentation for any purpose and without fee is hereby
granted, provided that the above copyright notice appear in all copies
and that both that copyright notice and this permission notice appear
in supporting documentation, and that the name of Paradigm Associates
Inc not be used in advertising or publicity pertaining to distribution
of the software without specific, written prior permission.

PARADIGM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
PARADIGM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.

3.2 Edinburgh Speech Tools Library

The Edinburgh Speech Tools lies at the core of Festival. Although developed separately, much of the development of certain parts of the Edinburgh Speech Tools has been directed by Festival's needs. In turn those who have contributed to the Speech Tools make Festival a more usable system.

See section `Acknowledgements' in Edinburgh Speech Tools Library Manual.

Online information about the Edinburgh Speech Tools library is available through

http://www.cstr.ed.ac.uk/projects/speechtools.html

3.3 Others

Many others have provided actual code and support for Festival, for which we are grateful. Specifically,


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