[sdiy] Electrosmith Eurorack DSP platform

cheater cheater cheater00social at gmail.com
Sat Jan 29 12:49:55 CET 2022


This link might well be suited for what David is doing...

http://all-electric.com/schematic/res_trim.htm

On Sat, Jan 29, 2022 at 12:47 PM cheater cheater
<cheater00social at gmail.com> wrote:
>
> Cool link Eric. Is there something on that page related to what we're
> talking about? Not meant sarcastically, it's just a bit of a mess ...
> I think I recognize it from years ago but not sure :)
>
> On Sat, Jan 29, 2022 at 12:49 AM Eric Brombaugh via Synth-diy
> <synth-diy at synth-diy.org> wrote:
> >
> > Probably a good time to repost this link:
> >
> > http://all-electric.com/b&c.html
> >
> > Quirky, old chips, but there's a lot to learn from here.
> >
> > Eric
> >
> > On 1/28/22 14:25, Mike Bryant wrote:
> > > Yes.  But if you put the sampler and comparator well away from the FPGA to avoid the noise, and smoothed the feedback well, you could get similar performance.
> > >
> > > When sigma-delta was first proposed someone at the place I worked built a demonstrator using 4000 series CMOS.  But it got killed by someone touching it without a wristband :-)
> > >
> > >
> > > -----Original Message-----
> > > From: cheater cheater [mailto:cheater00social at gmail.com]
> > > Sent: 28 January 2022 20:23
> > > To: Mike Bryant
> > > Cc: Eric Brombaugh; synth-diy at synth-diy.org
> > > Subject: Re: [sdiy] Electrosmith Eurorack DSP platform
> > >
> > > Right, but they didn't do that on a run of the mill fpga, right? They designed their own custom IC where everything was on one chip of silicon - the digital output, the integrator circuit, etc - do I have that right?
> > >
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