[sdiy] dsPIC

[karl dalen]

--- Den lör 2008-12-06 skrev Eric Brombaugh <ebrombaugh1 at cox.net>:

> Från: Eric Brombaugh <ebrombaugh1 at cox.net>
> Ämne: Re: [sdiy] dsPIC
> Till: "Synth DIY" <synth-diy at dropmix.xs4all.nl>
> Datum: lördag 6 december 2008 03.18
> karl dalen wrote:
> > Since dsPIC so cheap and quite powerfull why do
> anything in analog?
> > One could do a complete 3 osc synth in a euro module
> with one of these!
> > Take 10 and get polyphony! Take 100 and then die of
> boredom! :)
> > 
> > Im a bit pussled, they are indeed powerful now since
> > the got both codec interface and 16bit converters on
> chip!
> 
> Main reason is that it's really _hard_ to get some
> kinds of 'analogy' behavior out of a DSP. You
> certainly can do several oscillators in an inexpensive
> dsPIC, but as Antti has pointed out elsewhere, the
> anti-aliasing functions you need to approximate the sound of
> a good analog VCO gets pretty complex.

Yes i now, i just got a sudden flash of,why analog? kind of,
analog is boring, why exponetial converter? when i can do a
wavetable osc! Kind of sudden, oh analog boring yes, no,
work go digital zombilike responce.

> 
> Bottom line: If you need the sound of an analog VCO (or
> filter, etc), we're not yet quite to the point where you
> can discard the actual analog circuits and replace them with
> a $3 DSP. Even when we do get silicon that cheap, knowing
> enough signal processing to take advantage of it may remain
> a barrier until the code is freely available and anyone can
> put an analog modeling synth together out of code from teh
> intarwebs.

Im looking into some ICDs for the dspic GP802, there are loads of demo packages from everyone, wich do you use? I rater do my own ISP, ICD
but most seams to be based on a F877 as middle man, no real JTAG
as on Cortex M3, PC P-port to JTAG + buffer and thats it, then go full blown debugg, dsPIC no? hassle much stress program to dsPIC get easily
bored and sentence building goes banana in massage!!??!!

So, ideas? This pain in arse? No? Full debugg or only demo hello world? 
http://se.farnell.com/microchip/dm330011/kit-starter-mplab-for-dspic/dp/1621788

KD   


 
> Until then, dsPICs are great for folks who want to try
> things you _can't_ do more easily in analog.
> 
> Eric
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