[PD] Pure Data w/OS X Tiger and Logic (IAC midi)

[Julian Peterson]

Yes, Dave, this is exactly the setup I use.

There's a few tricks to getting it all to work.  First, you have to  
open Audio/MIDI setup and enable the IAC bus.  The next step is to  
set up the IAC bus in logic.  This can be tricky, because if you  
don't take care you'll cause an endless midi-loop which will  
hopelessly crash your system.  I only use one midi controller, so the  
approach I took was to use the channel splitter (in the environment  
window) to accept only one input channel.  Then I created a new midi  
instrument for the IAC bus that plays back on all but the one channel  
I filtered from before.  This ensures that data sent on channel n to  
the logic bus will not be fed directly into the iac bus.  If you have  
trouble with these steps and need more elaboration, email me off- 
list... we needn't bother the PD community with Logic woes.

Then set the input in PD to IAC and you're good to control pd from  
logic.  Getting audio to flow from PD to logic requires either  
Soundflower (www.cycling74.com) or Jack (www.jackosx.com).  I get  
much, much, much, much lower latency with Jack than Soundflower, but  
you have to make sure that the PD binary you have is jack-enabled.  I  
use Hans' Pd-0.39test2-extended-RC0.app , which you can get from  
http://at.or.at/hans/pd/installers.html .

Once I got everything sorted out (it took a little experimenting), I  
was able to set up a PD enabled Logic environment that works very  
smoothly.  And I've been having a blast.

Good luck,
Julian Peterson


On Jul 6, 2005, at 10:55 PM, Dave Della Costa wrote:


> Hey folks, I'm trying to get Pure Data to work with the IAC bus--so  
> that I can send midi from Logic and get 'notein' working--but I  
> don't seem to know where to begin.  I've messed around with IAC  
> midi settings, PD settings show nothing available, and Logic  
> doesn't seem to have anything relevant to setting this up.  Can  
> anyone with experience in this tell me where to start?  Searching  
> on the list and on the web has yielded me no clues as of yet.
>
> Many thanks all,
> Dave D.
>
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