Install sonic by entering the following commands in the terminal:
sudo apt update sudo apt install sonic
Description:
Simple utility to speed up or slow down speech
Sonic is a very simple utility that reads and writes wav files, and speeds them up or slows them down, with low distortion. The key new feature in Sonic versus other libraries is very high quality at speed up factors well over 2X.
Homepage: https://github.com/waywardgeek/sonic
Version: 0.2.0-6
Section: universe/sound