SPU2-X SVN r4118 is released. SPU2-X is a pcsx2 sound plugin for PCSX2.

SPU2-X SVN Changelog:
r4118
SPU2-X:
Adapted the de-alias and frequency response filters from nenolod's "UPSE", a high quality PSF player.
(http://nenolod.net/projects/upse/)
These 2 filters are present on the real SPU(2) as well and are meant to increase the audio quality
by fixing aliasing and then equalizing the final result.
It currently mostly seems to accentuate the presence and highs.

Thanks a ton for hinting at this and for letting us adapt your code for SPU2-X, nenolod! :)

Download: SPU2-X SVN r4118
Source: Here