Joined: Jan 18, 2005 Posts: 4145 Location: Sweden
Audio files: 373
G2 patch files: 100
Posted: Sun Feb 24, 2008 3:42 am Post subject:
Possible issue using multiple outs on Motu Ultralite / OSX
I've looked around some, but can't find any similar experience - this might be some config mistake on my part, but I doubt it.
I want to route out ChucK audio to something else than the main outs on my Ultralite audio interface (8 ordinary outputs besides the main outs). I tried doing this:
The result is audio on all extra outputs (but not the main ones), judging from the visual feedback on the ultralite box. Also, if I listen to what I get on one of the outputs, I hear what I is in the wav file that I have attached. Not what you'd expect from a SinOsc with gain 0.1, eh? If I run this patch without --out4, I get the nice sine beeps that I expected.
Ah! And as I am writing this post, I think I've solved my problem. If I change --out4 to --out8 (which better matches the amount of audio outs on the ultralite --out10 doesn't work, so I guess that ChucK can't connect to the S/PDIF outputs), then it worked. It still outputs to all 8 extra outputs though, unless I specify a channel with lisa => dac.chan(0), which will send to only output 1.
OK, just to complete my survey on this, if I kept --out4 and started specifying which channel to use like this:
Code:
LiSa lisa => dac.chan(0);
then I got some weird modulo output selection, with audio on output 2 and 6. If I change to --out3 I get a horrible high-pitched sharp sound on channel 1, and the mangled beep on all channels 2-8.
So, I've worked around my problem, but there seems to be some kind of bug in there when it comes to using multiple outputs on my setup. To wrap up, here's what --probe says:
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If I change --out4 to --out8 (which better matches the amount of audio outs on the ultralite --out10 doesn't work, so I guess that ChucK can't connect to the S/PDIF outputs), then it worked. It still outputs to all 8 extra outputs though, unless I specify a channel with lisa => dac.chan(0), which will send to only output 1.
