Install espeakedit by entering the following commands in the terminal:
sudo apt update sudo apt install espeakedit
Description:
Multi-lingual software speech synthesizer - editor
eSpeak is a software speech synthesizer for English, and some other languages. . eSpeakEdit provides a User Interface to edit the eSpeak voices.
Homepage: http://espeak.sourceforge.net/
Version: 1.48.03-4
Section: universe/sound