[chuck-users] Electronic ChucK

Spencer Salazar ssalazar at CS.Princeton.EDU
Thu Oct 2 16:25:48 EDT 2008

Hmm, so you mentioned using PICs to program UGens... to me, it seems  
wasteful to pass analog audio between a graph of PIC + ADC/DAC's, why  
not pass digital audio between multiple PIC units?  A digital modular  
synthesizer of sorts.  A simplified SPDIF or I2S might do the trick  
for shuttling samples around.  There could be designs for ADC/DAC  
units, and also USB Audio-class units for I/O to conventional computers.

It seems interference/parasitic issues might be more problematic for a  
digital signal on unshielded cabling, but I can't claim to be an  
expert on any of this.  One also loses analog cred in this way, but it  
would definitely keep costs down, and permit easy on the fly  


On Oct 2, 2008, at 11:50 AM, inventor-66 at comcast.net wrote:

> Kassen,
> Your point is well taken.  I guess I'm not concerned about the  
> audiophile quality of this system at all.  If it's going to be so  
> inexpensive then it will probably be inaccurate as well, and I'm OK  
> with that.  It's not intended to produce perfectly orchestrated  
> audio, but rather to do something fun and interesting.
> Also, that 555 example was indeed for a variable frequency  
> oscillator, more specifically a pulse position modulator from the  
> data sheet.  there is a CV input that stops the oscillator at ground  
> and sets maximum frequency at Vcc.  Though to get a 50% duty cycle  
> one must add a flip-flop to the output.
> I'm really just going for a cool toy that will make lights blink and  
> go woo-woo when I put together a ring of oscillators, this does not  
> have to be super precise.  That and the limited types of modulation  
> input kind of make for a departure from ChucK, however.  But that's  
> OK too.  It can simply be ChucK-inspired not ChucK duplicated.
> Les
> (Inventor)
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