Festival is a speech synthesis system developed by the Centre for Speech Technology Research at the University of Edinburgh with additional contributions from Carnegie Mellon University and others.
AwesomeTTS currently only supports Festival on Linux.
For AwesomeTTS to be able to use Festival, it must be able to find the
text2wave binaries in the system
$PATH and it must be able to discover which voices you have installed.
Festival usually comes with support for a few languages, but additional voice packages can be downloaded separately. Some additional information can be found at the Festvox project website.
If your Linux distribution happens to install Festival voices to some directory other than
/usr/local/share/festival/voices, please report it to AwesomeTTS and support can be added for your distribution.
When using Festival, only the Volume of the voice is available for adjustment.