<s>
The	O
Festival	B-Language
Speech	I-Language
Synthesis	I-Language
System	I-Language
is	O
a	O
general	O
multi-lingual	O
speech	B-Application
synthesis	I-Application
system	O
originally	O
developed	O
by	O
Alan	O
W	O
.	O
Black	O
,	O
Paul	O
Taylor	O
and	O
Richard	O
Caley	O
at	O
the	O
Centre	O
for	O
Speech	O
Technology	O
Research	O
(	O
CSTR	O
)	O
at	O
the	O
University	O
of	O
Edinburgh	O
.	O
</s>
<s>
It	O
is	O
distributed	O
under	O
a	O
free	B-License
software	I-License
license	I-License
similar	O
to	O
the	O
BSD	B-Operating_System
License	I-Operating_System
.	O
</s>
<s>
It	O
offers	O
a	O
full	O
text	B-Application
to	I-Application
speech	I-Application
system	O
with	O
various	O
APIs	B-General_Concept
,	O
as	O
well	O
as	O
an	O
environment	O
for	O
development	O
and	O
research	O
of	O
speech	B-Application
synthesis	I-Application
techniques	O
.	O
</s>
<s>
It	O
is	O
written	O
in	O
C++	B-Language
with	O
a	O
Scheme-like	O
command	O
interpreter	O
for	O
general	O
customization	O
and	O
extension	O
.	O
</s>
<s>
The	O
Festvox	B-Language
project	O
aims	O
to	O
make	O
the	O
building	O
of	O
new	O
synthetic	B-Application
voices	I-Application
more	O
systematic	O
and	O
better	O
documented	O
,	O
making	O
it	O
possible	O
for	O
anyone	O
to	O
build	O
a	O
new	O
voice	O
.	O
</s>
<s>
It	O
is	O
distributed	O
under	O
a	O
free	B-License
software	I-License
license	I-License
similar	O
to	O
the	B-License
MIT	I-License
License	I-License
.	O
</s>
<s>
Festvox	B-Language
is	O
a	O
suite	O
of	O
tools	O
by	O
Alan	O
W	O
.	O
Black	O
and	O
Kevin	O
Lenzo	O
for	O
building	O
synthetic	B-Application
voices	I-Application
for	O
Festival	O
.	O
</s>
<s>
It	O
includes	O
a	O
step-by-step	O
tutorial	O
with	O
examples	O
in	O
document	O
called	O
"	O
Building	O
Synthetic	B-Application
Voices	I-Application
"	O
.	O
</s>
<s>
Flite	O
is	O
a	O
small	O
run-time	O
speech	B-Application
synthesis	I-Application
engine	O
developed	O
at	O
Carnegie	O
Mellon	O
University	O
,	O
derived	O
from	O
both	O
Festival	O
and	O
Festvox	B-Language
.	O
</s>
<s>
There	O
is	O
a	O
Festival	O
plug-in	B-Application
for	O
GStreamer	B-Language
.	O
</s>
<s>
Festival	O
is	O
pre-packaged	O
for	O
several	O
Linux	B-Application
distributions	I-Application
.	O
</s>
