Install espeakup by entering the following commands in the terminal:
sudo apt update sudo apt install espeakup
Description:
Connector between speakup kernel modules and espeak
Espeakup is a daemon that connects speakup kernel modules to the espeak software speech synthesizer through the /dev/softsynth device.
Homepage: http://www.github.com/williamh/espeakup
Version: 1:0.80-9
Section: universe/admin