Install festival-czech by entering the following commands in the terminal:
sudo apt update sudo apt install festival-czech
Description:
Czech support for Festival speech synthesis system
General Czech language support for Festival, necessary to make Festival speak Czech. This package does not contain Czech Festival voice data, you must additionally install the voice-czech-ph package or another Czech voice.
Homepage: http://devel.freebsoft.org/festival-czech
Version: 0.3-3
Section: universe/sound