[sdiy] binaural receiver circuits

[Barry Klein]

Hello,
I believe I asked about this subject maybe a few years ago.  Although I had
always intended to build a binaural receiver, I never have gotten around to
it.  If you Goggle "Kanga", "binaural receiver", and maybe "KK7B" you'll
find circuits.  Basically some use the phase-shifter op amp circuitry to
make mono CW signals take stereo space (with headphones).  Here is a
schematic of just an audio processing circuit of this nature:
http://www.arsqrp.com/ars/images/backissue_images/2001_images/0501_images/sc
hematic.jpg

There also was a site that had C code to do this all in software.  I am just
curious if anyone has done this yet and maybe has mono vs stereo mp3's of
it.  (or maybe now there is a plug-in that does this??)

Barry