FreeSpeech contains English text to phoneme converter and pronunciation dictionary that being used along with MBROLA can provide full TTS functionality for English language.
This software originates from the archive found at
http://tcts.fpms.ac.be/synthesis/mbrola/tts/English/fs.a10m.tar.gz
Since approximately 2019, the resource at this address has been unavailable,
but the archive with original project has been archived by the Wayback Machine
and can be downloaded at
https://web.archive.org/web/20051029153831/chttp://tcts.fpms.ac.be/synthesis/mbrola/tts/English/fs.a10m.tar.gz
(This information is for historical reference only
and the original archive is not required to build the FreeSpeech software.
This repository contains all the original source code with subsequent patches.)