[sdiy] Popcorn Noise Generator?

Magnus Danielson cfmd at bredband.net
Sat Jul 9 04:44:35 CEST 2005


From: harrybissell <harrybissell at prodigy.net>
Subject: Re: [sdiy] Popcorn Noise Generator?
Date: Fri, 08 Jul 2005 22:14:41 -0400
Message-ID: <42CF3310.217C262A at prodigy.net>

> 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.

Considering that it has the powerlaw of 1/f², a -6dB curve would do the trick.
Infact, since some pop-corn noise is already in place in the low low bottom,
the corner frequency would just be a cross-over between actual and synthesized
pop-corn noise. So, use a normal white-noise source and then integrate it.
That should do the trick.

> alternately you could get an old Gershon Kingsley record and have some
> REAL popcorn noise...

Yes, but I was going to propose to apply the right kind of packet to the
microwave oven... :P

Cheers,
Magnus




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