[sdiy] PSIM-1 endorsees

[harrybissell]

Hah... your small group... are all ENDORSEES !!!     ;^P

They offered me but, of course as you all know... I cannot be bought.

Aren't those BBDs the best thing since sliced bread ???

H^) harry   (this is of course, all lies :^)

john mahoney wrote:

> In most cases, a programmable device would be overkill. If you insist,
> though, it's a no-brainer: the PSIM-1.
>
> The PSIM-1 has 4 CV inputs, 4 CV outputs, and a Hitachi microprocessor in
> the middle. You could write your own conversion program in BASIC, but there
> are already 2 quantizing programs in the Yahoo group files area. There is a
> 4-channel chromatic quantizer and a "1 ch Quantizer with ch2 in cv
> controlled quantization resolution." Just modify one of them and you're
> done. More info is at http://www.synthmodules.com/. (I am not affiliated
> with synthmodules, I merely own a PSIM.)
>
> Anyway, to scale a control voltage linearly, I believe that all you need are
> adjustable attenuation, gain, and offset. In other words, a couple of pots
> and an op amp.
>
> However... Some old gear (old Korg and PAiA, for example) uses linear VCOs
> (V/Hz) instead of exponential VCOs (V/octave), and that's a bigger problem.
> There are a few ways to handle that, one of them being a PSIM-1.
> --
> john
>
> P.S. Everybody, *please* forgive the enthusiasm of the small group of PSIM
> users. We're excited! This is the Swiss Army Knife of modules. That's been
> said of other modules, but it's really true of this one. Nothing else can
> assume so many personalities, and nothing else has such an easily
> programmable brain. Okay, I'll stop. For now...
>
> ----- Original Message -----
> From: "nN AAt e e" <timexheater at comcast.net>
> To: <synth-diy at dropmix.xs4all.nl>
> Sent: Thursday, March 04, 2004 6:32 PM
> Subject: [sdiy] Programmable ICs / Scaling
>
> > i just got to wondering how one would go about say... taking something
> like
> > a performance synth that may not be 1v/oct and doing the math to figure
> out
> > what the scale is, then make something to convert it to 1v/oct...
> >
> > ...while mostly using programmable ICs as to make it [slightly] easier to
> > deal with math problems.
> >
> > i know this isnt very hard to convert old korg/paia standards to roland
> > using analog based converters, but what would be good ICs to check out
> that
> > should be able to handle the voltage ranges of a synth? it doesn't seem
> like
> > it would be too difficult using something like PICs or Stamps, but i
> havent
> > really worked with either of them before.
> >
> > has anyone here made any custom scaling devices?
> >
> > this would probably be only used for cv output [nonstandard-> 1v/oct], but
> > 1v/oct inputs would be pretty cool later on too.
> >
> > - nate
> >
> >