[PD] Recording question

tania habib taniahabib at gmail.com
Wed Dec 19 13:32:55 CET 2007

Well now I am facing a problem, I guess I was too excited to really
check whether this option worked properly or not!
The problem is that I have a patch in Pd, where I am using adc~,
writesf~ to write the streaming data into wave files.
When I initialize Pd, it recognizes the aggregate device, I click on
it and select the no. of channels to the total no. of inputs I have
with the aggregate device, say 8.
When I start the recording and finish it. Open the wav files in
audacity, only two channels seems to be active the rest have nothing
in them!
Can someone, who has used this feature to do recording with Pd please
let me know, what I am doing wrong!.

On Dec 19, 2007 2:00 AM, simon wise <simonxwise at hotmail.com> wrote:
> On 19 Dec 2007, at 9:51 AM, Roman Haefeli wrote:
> > hey, that is cool to know (as a non-osx user, i wouldn't have expected
> > something like that to exist, but i think, i know quite some people
> > who
> > could benefit from that).
> > just in case you know: do you have an idea how this system deals with
> > the fact, that each of this cheapo soundcards have their own clock?
> > does
> > it use one as the master clock and does apply a samplingrate
> > conversion
> > to the other in order to sync it?
> > i am asking, because i would like to know, if any decrease in sound
> > quality is expected when you use aggregate.
> I've used it a couple of times to get some extra outputs from a
> laptop, and it has worked fine but I haven't used it extensively.
> There are options to choose which clock source is used, and options
> (for each physical device) to re-sample the audio so it seems that it
> will re-sample if you choose, or not if it works ok without - I guess
> that would depend on things like the abilities of the cards and their
> drivers.
> It has been around for a while - maybe introduced in OSX 10.3???
> simon

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