The naggety/picotts as Home Assistant Supervisor addon. (Useable on Raspberry Pi 3-)
This addon executes the tts engine behind a webservice. It provides support for all default languages.
To the Addon: Hassio-Addons/picoTTS at master · Poeschl/Hassio-Addons · GitHub
If issues occur please use the GitHub issue board, since I’m only on the community forum from time to time.