Machine Speaker 2 is graphical frontend for espeak and it has a feature to save speech as audio file (Recording-$time.mp3). It should be support all locales. Supported locales can find using a command

espeak --voices

Installing via command line, open Terminal into extracted package and run commands

su

rpm -ivh --force machine-speaker2-pulse-1-1.noarch.rpm

...

dnf install machine-speaker2-pulse-1-1.noarch.rpm
