[sdiy] binaural receiver circuits

[John L Marshall]

Barry,

KK7B is Rick Campbell. He published a binaural receiver in the March 1999 
QST. The receiver uses a pair or detectors in quadrature.

Take care,
John
www.sound-photo.com
www.antenna-farm.com

----- Original Message ----- 
From: "Barry Klein" <Barry.L.Klein at wdc.com>
To: "sdiy" <synth-diy at dropmix.xs4all.nl>
Sent: Thursday, February 22, 2007 12:15 PM
Subject: [sdiy] binaural receiver circuits


> 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
>
>