So this paper is a thinly veiled ad of myshell.ai's services?

Yes. And I used myshell.ai out of interest. It’s also absolutely terrible.

I came here just for your comment. Thank you for doing this work so the rest of us doesn't have to.

I went through downloading the open source version yesterday and tried it with my voice in the microphone, and a few other saved wav files.

It was terrible. Absolutely terrible. Like, given how much hype I saw about this, I expected something half decent. It was not. It was bad, so bad bad bad.

I was thinking maybe I did something wrong, but then I watched some of the youtube reviews - these guys were SO excited at the start of the video and then at the end, they all literally said, "Uh, well, you be the judge"

I still can't help but feel there's some kind of trick to it - get the right input sample, done in the right intonation, and maybe you can generate anything

Like 50% of arxiv. SV figured out that people read papers in 202x, not PRNewsWire and have adjusted accordingly.

Not totally unexpected unfortunately. Any other OSS players on the market?

RVC