Very cool! Have you tried it on old 78rpm recordings, or is that a different type of noise than you’re aiming to remove?
[update] I've tried it on an old 78rpm recording and it successfully removed the hiss — but it was a bit too aggressive, so the resulting audio sounds muffled and lacking in presence/high end. I can completely understand that this particular use case might not be the target audience, though! I'll keep this link around for my own (modern) audio recordings.
We haven't tried it on old 78rpm recordings, but feel free to send one over to thomas@tape.it . The algorithm is trained on a surprisingly small amount of data by today's standards, due to the architecture we chose. There is a lot of room for improvement as we collect more examples, and it's something we definitely intend to do.
[update] I've tried it on an old 78rpm recording and it successfully removed the hiss — but it was a bit too aggressive, so the resulting audio sounds muffled and lacking in presence/high end. I can completely understand that this particular use case might not be the target audience, though! I'll keep this link around for my own (modern) audio recordings.