How I made my HA "speak" non English fully local

We have many very high quality local TTS models for English and a handful of non English languages. However, there is none for Romanian.

So I decided to look into how to make one. It turns out it was easier than I expected. Took a week of trial and error and extensive Google usage, but I got it there.

I documented the steps for anyone who might want to reproduce it for other languages. The "secret" is to have 2 phase training, one for adding new, non English tokens to the vocab and then the actual training.

I used XTTS v2 for this (currently in the process of finding the right way to add extra languages to other popular TTS models).

I published everything into a Codeberg repository: https://codeberg.org/eduardm/romanian-tts-xtts-v2

All the code I used is there, to train a new language need to identify the best matching existing token phonetic matching (do not initialise with random) and update the scripts

I hope this helps