[sdiy] LFSR digital noise source

David G Dixon dixon at mail.ubc.ca
Mon Nov 11 08:38:10 CET 2019

I've built quite a few analog white noise sources, and I've never selected
transistors, and they've always worked perfectly.  Not sure why.  Have I
just been lucky, or is it actually pretty idiot-proof?

-----Original Message-----
From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of René
Sent: Sunday, November 10, 2019 4:27 PM
To: synth-diy at synth-diy.org
Subject: Re: [sdiy] LFSR digital noise source

Hi Colin,

On 11.11.2019 01:09, ColinMuirDorward wrote:
> Hope this isn't too off topic, but I've often wondered when/why you'd 
> choose a digital noise source over an analog one. It is simply for the 
> acoustic flavour?

Mostly for repeatability. Analog sources have more variation. And thus 
you will have to select noise transistors/zeners. Not a huge deal for a 
one off noise source.


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