Happy new year to all!
Over the holidays I found some time to port the recovered version of
speak(6) to modern Unix systems and make its output compatible with the
espeak system. The resulting sound is barely intelligible. I assume
this is due to the imperfect matching between the speak and espeak
phonemes. The process's details are available at
https://www.spinellis.gr/blog/20210102#tu and the code at
https://github.com/dspinellis/speak.
Diomidis