[sdiy] Anyone remember the Psych Tone?

[Scott Evans, Gen Mgr]

I recall reading a construction article on the "Psych Tone" in a '70s
edition of Popular Electronics. It had three or four knobs on the front
and generated random tone patterns. I am attempting to locate a
schematic for this project and wish to adapt it to a DIY project. If
anyone has the schemos or know where they are archived, I would
appreciated it.

Regards and thanks in advance,

Scott Evans