[D] State of the art TTS

State of the art Tts question

Hey!
I'm currently working on a project and I'd like to implement speech using TTS, I tried many things and I can't seem to find something that fits my needs, I haven't worked on TTS for a while now so I was wondering if maybe they were newer technologies I could use.

Here is what I'm looking for :

I need to be be quite fast and without too many sound artifacts (I tried …

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