Qsound_hle
It represents a beautiful trade-off: sacrificing hardware purity for playability. The next time you fire up Final Fight and hear the background traffic woosh from the left speaker to the right, take a moment to thank the unsung engineer who wrote that HLE core.
qsound_hle works by interpreting the commands sent by the CPS-2 game code to the DL-1425 QSound chip and generating the corresponding audio output via software. Why qsound_hle is Essential qsound_hle