Something I've been fiddling with on and off for quite some time. This's my custom street fighter 2 arcade hack that runs on a real cps1 arcade board. I recently modified the audio circuit of my arcade board to remove the muffle and restore full audio clarity:https://www.youtube.com/watch?v=yw_vWAMbwUQ
Removing the audio filtering of the arcade board made bad quality audio samples really stand out, some of the percussion samples had this really annoying high pitch noise. Thanks to tiido I learned how to manipulate sound effect samples in the arcade game and either remove them or replace them with samples from other cps1 games. The bass kick drum in street fighter 2 has an annoying high pitch sound but I fixed it by swapping it with the bass kick sample from rockman power battle. The bongo samples in the blanka and dhalsim stage also had the high pitch noise so I just removed them since finding replacement bongo samples is mostly likely never going to happen.
This game has been seriously hacked up, physics, abilities, super moves, pallettes, everything has been redone, customized, and very tweaked for maximum fun:https://www.youtube.com/watch?v=uObo8b4zTU4