I recorded 14 channels of musical performance with a different software package (sony acid) a couple days ago. Unfortunately, I had the ASIO sample buffer set very low because I had recently been using the system with a live internet-based software package (JamKazam) that performs bet with relatively small buffers. So my ASIO buffer was 16 samples. I forgot to switch the ASIO buffer back to a normal size before the recording session. Our band sounded great during the recording sessions, but now, I have 3 hours of wave files that sound like they are being played through a blown speaker with a bad cable. Given how hard it is to actually get together and perform during COVID, I would really like to be able to recover these files. I am guessing that some combination of smoothing and filtering might work, because the underlying tones are there. Has anyone ever found a solution to this problem? I've attached a small sample of a direct recording of hte bass guitar.
Unfortunately, you can't do this. You have a situation where a buffer overflowed, and there was nowhere for the incoming data to be stored temporarily - so it was rejected, and therefore lost. Even if you could get rid of that buzz (which is the buffer crashing repeatedly, every 16 samples), you'd still have gaps where you have no valid information about what should fill them.
Essentially it constitutes distortion, and that's the one thing that is never going to be repairable - simply because the information about what's supposed to be there is missing. So sorry, no can do.