american
The Carnegie Mellon Pronouncing Dictionary [cmudict.0.1] is Copyright
1993 by Carnegie Mellon University. Use of this dictionary, for any
research or commercial purpose, is completely unrestricted. If you
make use of or redistribute this material, we would appreciate
acknowlegement of its origin.
ftp://ftp.cs.cmu.edu/project/fgdata/dict;
You can query it.
Say... uses cmudict.0.3.Z
british
"beep".
This is a direct desendant of CUVOLAD (british pronounciation)
(as used by previous releases of rsynth), and so
has a more restrictive copyright than CMU dictionary.
ftp://svr-ftp.eng.cam.ac.uk/comp.speech/data
Say... uses beep-0.5.tar.gz