Emulator

Have you tried both HLE and LLE DSP?

filoppi wrote:

Have you tried both HLE and LLE DSP?

Yes. HLE, LLE Recompiler, and LLE Interpreter all seem to behave identically.

Have you tried multiple Audio Backends?

Yes. Behaviour appears the same on Cubeb and OpenAL backends. WASAPI has issues on my system so I was unable to test that, but the issue does not appear related to any particular backend. Audio stretching also has no impact, though I wouldn't expect it to as the game is running at full speed.

For the sake of completeness I should probably add that I have tested the game on Wii hardware and there's no sign of the crackling there.

Ok then. Not something for me, I've only worked on the backends, but if it happens with multiple ones, it's likely to be the DSP or something else in the emulation. I doubt it's the internal mixer. Would be nice to have an audio sample if you can be bothered (I don't have the game), but I'll probably not be the one to ever fix it.

Also maybe try a really old dolphin build given that this seems pretty easy to reproduce?

I just tested 3.0 stable out of interest. The issue's still present that far back.