> A bit more refinement to be done for later according to the contributor. > > — > https://github.com/mamedev/mame/pull/11459 > > That's also why I originally wrote "stereo separation" and not "reverberation" in > the comments for the code, because that's what the second sound rom does; it > introduces a delay to produce a stereo widening effect. There is absolutely no > reverberation or any post-processing effect done to the audio. My reverse engineered > source code of the sound rom breaks down how this works in further detail: