@BartW22 Hmm I've had a quick look, but unfortunately it looks like it was not using a fixed sample rate, that makes it a little tricky to process the results with the online tools I could find. But even if you can work out the frequency I really doubt if the RRF input shaper is going to be able to handle that level of oscilation it is a bit more than your typical 3d printer ringing! But what do I know, maybe it can help.
