[sdiy] Odd noise generator

[D A F]

Hello Francois,

You might want to check out some of the literature of the late Elmer
Osterhoudt.  His company, Modern Radio Labs, published a lot of d.i.y. radio
pamphlets back in the earlier part of the last century, most of it focusing
on various crystal detectors and related circuits.


http://www.modernradiolabs.com/literature.htm



I seem to also remember a web site where someone made a sound file of a salt
crystal or a junction imersed in salt water or some such thing - it produced
some very dramatic sounds.  I cannot seem to find the link to it right now -
maybe someone on the list has seen this one?


Dave





----- Original Message -----
From: "Francois Dion" <fdion at cimastudios.com>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Friday, September 09, 2005 12:32 PM
Subject: [sdiy] Odd noise generator


> I've posted about this on AH before, but I figured maybe I'd get more
> feedback from sdiy.
>
> I've stumbled upon a very simple circuit that generates some very stange
> noise.  Not white noise, not filtered noise. In one mode of operation I
> know it is RF (and the operating principle is NOT that of the Fessenden
> iron/acid rectifier), but in the other, it is not clear. I only know at
> this point of 2 people that have done this experience (at least in 1
> mode): somebody at the Bremen university (with no success apparently)
> after reading my post on VLF, and Nyle Steiner (yes, mr. Synthacon
> himself) who has tested one mode (the one that generates the weird
noises).
>
> Some information on my "instrument" here:
> http://www.cimastudios.com/fdion/instruments.html
>
> This page goes deep in the experiment:
> http://www.cimastudios.com/fdion/rocket.html
>
> If you check out the track "02 - High Point Effect", you'll hear the
> mode I'm not sure about. That track is not part of the usual release of
> the month section ( http://www.cimastudios.com/fdion/music.html ) but is
> in the downloads section:
> http://www.cimastudios.com/fdion/download.html
>
> Comments are welcome on either mode of operations (rectifiying and non
> rectifying mode). I'd also would like to hear from anybody who make this
> noise generator.
>
> --
> Ciao,
> Francois Dion
> http://www.cimastudios.com/fdion/
>