<div dir="ltr">sometimes for the sound directly (crunchy/brittle), but more often slowing the clock and then using it as a modulation source</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Nov 10, 2019 at 7:11 PM ColinMuirDorward <<a href="mailto:colindorward@gmail.com">colindorward@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">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?</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Nov 10, 2019, 4:05 PM Ben Stuyts, <<a href="mailto:ben@stuyts.nl" target="_blank">ben@stuyts.nl</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">That link points to the mil-spec version which is $15 each at 100 pcs. :-D<br>
<br>
Ben<br>
<br>
> On 11 Nov 2019, at 00:43, <a href="mailto:rsdio@audiobanshee.com" rel="noreferrer" target="_blank">rsdio@audiobanshee.com</a> wrote:<br>
> <br>
> It’s not really a complex shift register. All you really need is a set of Exclusive OR gates and a simple shift register of the desired length. If you can’t find a shift register that is long enough for your needs, you can simply cascade shorter shift registers. The only disadvantage of a discrete logic design is size. You can certainly tweak the taps if you have the shift registers and XOR gates as separate components.<br>
> <br>
> Note that Texas Instruments lists their CD4006 product as Active.<br>
> <br>
> <a href="http://www.ti.com/product/CD4006B-MIL" rel="noreferrer noreferrer" target="_blank">http://www.ti.com/product/CD4006B-MIL</a><br>
> <br>
> Of course, this can be simulated in software, but that seems like serious overkill given how simple the basic gates are. I enjoy using processors for processing, but it’s way more fun to use discrete logic gates for pure logic functions.<br>
> <br>
> No matter which option you choose, I think that the signal conditioning from raw digital to analog would be a critical part of the design considerations.<br>
> <br>
> Brian<br>
> <br>
> <br>
>> On Nov 10, 2019, at 6:41 AM, bbob <<a href="mailto:fluxmonk@gmail.com" rel="noreferrer" target="_blank">fluxmonk@gmail.com</a>> wrote:<br>
>> anybody know of a digital noise circuit (similar to th ETI/Ken Stone design, <a href="http://www.synthpanel.com/modules/cgs31v10_digital_noise.html" rel="noreferrer noreferrer" target="_blank">http://www.synthpanel.com/modules/cgs31v10_digital_noise.html</a>) that does not use the out-of-production CD4006? Seems like you should be able to cobble together a complex shift register like that out of other still-available chips, but i'm not savvy enough on digital logic to do it myself.<br>
>> <br>
>> b<br>
> <br>
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