I had several compressor stalls on the 727-200 with its engines located far away on the tail. Not uncommon for the #2 engine with its S-duct. All of them were during ground ops. I don't know if it is always the case, but I found most of them difficult to hear and could be easily missed. I do remember one where it was felt more than heard, as if we had momentarily taxied over something.
I suspect they were still quite loud because with engines running and the window open the engine sound is loud enough to be uncomfortable yet when the window is closed, virtually all engine noise is blocked out.