Psychoacoustic Psychedelic effects, how and recommendations.

[osiris]

I'll mention Guitar Rig has one of the most delicious reverse delays I've ever heard.

[HOTF]

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[osiris]

There's only a few plugins I know of that would qualify as psychoacoustic. ReFine, Noveltech Character, Vastaus, and Basslane has a great Harmonics function, but I haven't used it on anything but a bass track.