Includes the following effects:
Chorus
Compressor
Distortion
Gargle
Vibrato
Tremolo
Pitch Shift
Tempo Shift
Playback Rate Shift
Echo
Phaser
Reverb
WahWah
IIR Filter

Changelog : https://github.com/mudlord/foobar2000-plugins/blob/master/foo_dsp_effect/CHANGES.md
Requires a CPU with support for SSE1.