AW: [PD] multiple devices help

Thomas Grill t.grill at
Thu May 30 10:58:08 CEST 2002

> > I see another problem with your setup, and that is the hardware side.
> > If you use several consumer soundcards without synchronization instead
> > of a decent multichannel card, it might or probably will happen, that
> > your audio will run out of sync. This means: the samples you send
> > synchronized from the PD DSP-chain will come out of the four
> > soundcards at different times, because each of the soundcards has a
> > different understanding of absolute time because of slight differences
> > in their clock chips.
> i've read this in the archives.  I'm not overly concerned since the sound
> design i've been working on has been of the ambient sound scape variety,
> so a little bit of drift will be fine.   i am going to setup some test
> patches and let them run for long periods of time (eventually over a
> week) ... i'll keep you guys posted on how it goes.

Hmmm, i guess the problem will be that pd can't deal with the clocks running
apart. I guess you will get clicks due to the fact that the 4 cards always
get the signal vector at the same time.


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