[sdiy] Popcorn Noise Generator?

[Ray Wilson]

The grainy noise generator is white noise through a window comparator. The 
window is adjustable so you get a few clicks or a lot of clicks.

Ray

----- Original Message ----- 
From: "Glen" <mclilith at charter.net>
To: "harrybissell" <harrybissell at prodigy.net>
Cc: <synth-diy at dropmix.xs4all.nl>
Sent: Friday, July 08, 2005 8:40 PM
Subject: Re: [sdiy] Popcorn Noise Generator?


> At 10:14 PM 7/8/2005, harrybissell wrote:
>
>>how about start with white noise, then rub it into an active diode
>>section biased so that only peaks above a DC level would be passed.
>>
>>Those peaks would still be analog (of varying amplitude) but would become
>>less frequent as the DC level was increased.
>>
>>alternately you could get an old Gershon Kingsley record and have some
>>REAL popcorn noise...
>>
>>H^) harry
>
> What about feeding white noise through a narrow window comparator? That 
> would make all the spikes the same amplitude, but is that really what we 
> would want, if trying to generate popcorn noise?
>
> What about a weak radioactive source, and a Geiger Mueller tube?
>
> What about sampling the voltage drop across a blinky neon lamp?
>
> I'm just wondering. I have to admit that I'm not totally sure what 
> isolated popcorn noise sounds like. I've heard a few audio amps which 
> popped and cracked due to a circuit failure, but I don't know if that's 
> really popcorn noise.
>
> Does anyone have a reference wav sample of the stuff?
>
> thanks,
> Glen