The KrispNet audio sounds similar to overly compressed audio filled with artifacts. The ffmpeg interpolated audio sounds better to me.
Not a bad idea though and will probably be a thing with proper refinement.
Oddly, the original and ffmpeg versions play fine on firefox (win 7, 64b, version 67.0), but the krisp version doesn't respond when clicked. I don't understand why not, as all samples are links to .wav files. It works on chrome.
Wasn't able to play any KrispNet samples from the Firefox browser I am running on my Ubuntu laptop.
This seems really good, is the code open source?
Really? It sounded worse to me. Very artificial / codec-y.