Training Matcha for other languages: Fine tunning HiFiGAN to specific speakers

[ibonsc]

Hello
I'm training Matcha for different languages and I think it would be good to fine tune the universal HiFiGAN vocoder to these new languages. Have you done such a thing?
To do that it is necessary to get the ground truth-aligned spectrograms of the training material, that will be used as input for the HiFiGAN finetuning. Is there any way to do that?
Thank you very much for your help.