Chatterbox

What it does

Chatterbox allows you to generate natural-sounding speech for free, with the added ability to adjust the intensity of emotions like joy, anger, or sadness. This tool is perfect for creating expressive voiceovers or interactive AI dialogues.

Summary based on the project's own description. The Japanese page has a fuller beginner guide: setup difficulty, what to prepare, and a step-by-step start.

Screenshots & visuals