[PD-ot] project idea: ngspice for pd

[Christian Klippel]

hi hans,

Am Sonntag, 7. Mai 2006 15:54 schrieb Hans-Christoph Steiner:
> It sounds like an awesome idea.  I was recently chatting with Massimo
> Banzi, one of the Arduino creators, about the possibililty of
> creating a Pd-ish language for programming microcontrollers.  This
> seems like it would be the perfect compliment to the idea.  I
> forwarded this proposal to the Arduino crew to see if they are
> interested.
>

hey, cool!

to me, stuff like spice on one side, and then things like pd on the other are 
very similar in the concept: they both take a netlist of parts/objects and 
then calculate the result of that. spice just makes nice curves/diagrams, pd 
sends the data straight to the audio device .... but essentially, i cant see 
much of a difference ...

thats why i think both would make a nice couple, especially for all the analog 
sound freaks out there ;) sure it is not use-able to emulate some 
full-featured, digital circuit with it... i dont see much sense in that 
anyway, since it could be done in pd natively, its just the sound 
generation/manipulation through circuit emulation that i am after ...

> .hc
>

if that comes true, i will sit down for a whole month in a row and capture 
schematics of synth's and filter's into spice files .... i swear ... ;)

greets,

chris

> On May 6, 2006, at 6:48 PM, Christian Klippel wrote:
> > hi all,
> >
> > after thinking a bit about the recent discussion re: electric
> > circuits in
> > software, id like to share an idea and ask for help as well:
> >
> > there is an fine, open-sourced circuit emulator available:
> > http://ngspice.sourceforge.net/
> >
> > my idea is to implement ngspice as a pd object, or, on the long
> > run, as a set
> > of objects representing the parts. for a start i think it would be
> > sufficient
> > to have a single object that loads a netlist. that netlist has to be
> > generated in en external tool, preferably from the gEDA suite
> > http://gnuwin.epfl.ch/apps/geda/
> >
> > after that it would be great to split up the rather big ngspice
> > package into
> > serveral objects, and eventually integrating a way to use a pd
> > patch as a
> > netlist source for it. that way, a circuit could be drawn as kind of
> > subpatch.
> >
> > altough i have no idea yet about the performance, it should be
> > possible to run
> > simpler circuits like oscillators and filter in realtime pretty
> > well. and i
> > mean in a way that it can be used in a performance, and not just
> > "runs, but
> > takes 90% cpu" .... ;)
> >
> > also i think that for the purpose of making it a pd object, some
> > things could
> > be simplified regarding the math to calculate the net's. any math-
> > heads
> > around that like to help with that? trading accuracy for speed, in
> > this case.
> >
> > what do you think? anyone like to participate in such a project?
> > for me alone
> > that would be bit to much right now, but i think it would be a nice
> > thing to
> > be able to emulate real synth/filter/etc. circuits in pd and mix
> > that with
> > the realtime audio capabilities ....
> >
> > greets,
> >
> > chris
> >
> >
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