[chuck-users] Multiple Output

Mon Jul 19 14:13:59 EDT 2010

Ok... it seems that ChucK support for multiple outputs varies depending out
what audio interface you use. I'm on a Mac too by the way. The only thing i
can think of is to try out various settings, for both --in --out and
--adc/--dac (it's possible that there is some other number you need to use
for --adc, since 7 didn't seem to work). Perhaps someone here with some
insight in the ChucK implementation and audio drivers in general can offer
some insight. I know that I had to do a bit of trial-and-error until I found
the sweetspots where my outputs actually work.

Sorry I couldn't help you more... :(

/Stefan

2010/7/19 Patrick Guido <patrick.arminio at gmail.com>

> I'm using Audie 8 DJ from Native Instruments (
> http://www.native-instruments.com/en/products/dj/audio-8-dj/ )
>
> It has led meters for audio output and input
>
> with the example you posted I get sound from the first output (1 on the
> soundcard) but when I ran the code with --out8 it doesn't work.
> Also if I set on my macbook as default audio soundcard the integrated one
> and I specify --adc7 I get no sound from the sound card, I also tried with
> --dac7 and seems working but when I set --out8 i get this erro:
>
> ./chuck mout.ck --dac7 --out8
> [*chuck]: (via rtaudio): unable to open specified device(s) with given
> stream parameters: *
> *... RtApiCore: unable to find OS-X audio stream on device (Native
> Instruments: Audio 8 DJ) for requested channels (8).*
> *
> *
> *[chuck]: cannot initialize audio device (try using --silent/-s)*
> *
> *
> full probe out is here: http://dpaste.com/219751/
>
>
> 2010/7/19 Stefan Blixt <stefan.blixt at gmail.com>
>
>> OK. I can never remember what the default values for things are, and I
>> think it's best to started with something as simple as possible. I suggest
>> you stick with this program:
>>
>> SinOsc a => dac.chan(0); // send sine wave to the fourth mono output
>>
>> *
>>
>> while(true) {
>>     1::second => now;}
>>
>> Now,start it up like any plain old chuck programs, without trying to make use of multiple outputs or anything:
>>
>> chuck test.ck
>>
>> Do you hear a low sine wave? Fine, the app works. Now try the same program with a different setting:
>>
>> chuck --out4 test.ck
>>
>> Do you still hear the sine wave? Do you get an error message, and if so, which one? Do you get silence? Do you have some kind of meter LEDs on your soundcard (or in a mixer program on your host), and if so, can you see any of the meters going up? What soundcard are you using by the way?
>>
>> Depending on what your answers are to the questions above, you may move ahead with specifying --adc and some number. If you got the above working, just increase the number of outputs to what you want. If you can't get it working, post the output of chuck --probe here and I or someone might get some other idea...
>>
>> /Stefan
>>
>>
>> *
>>
>> 2010/7/19 Patrick Guido <patrick.arminio at gmail.com>
>>
>>> just tried with the correct output, but no audio plays :(
>>>
>>> http://dpaste.com/219737/
>>>
>>>
>>> 2010/7/19 Stefan Blixt <stefan.blixt at gmail.com>
>>>
>>>> Did you try specifying the device with --adc<n>? I didn't get it to work
>>>> with just using --in and --out by themselves.
>>>>
>>>> Run:
>>>>
>>>> chuck --probe
>>>>
>>>> there you can see the devices (named dac1, dac2 etc). Take the number
>>>> after dac and put it after --adc to make something like this:
>>>>
>>>> chuck  --adc4 --in4 --out8
>>>>
>>>> /Stefan
>>>>
>>>> 2010/7/19 Patrick Guido <patrick.arminio at gmail.com>
>>>>
>>>>> thank for reply. I did this http://dpaste.com/219718/ but it doesn't
>>>>> work :(
>>>>>
>>>>> I ran it with ./chuck --in8 --out8
>>>>>
>>>>>
>>>>> 2010/7/19 Stefan Blixt <stefan.blixt at gmail.com>
>>>>>
>>>>> Yes. For my MOTU soundcard it took a bit of tinkering to get it right.
>>>>>> Here's an example of a command line:
>>>>>>
>>>>>> chuck  --adc4 --in4 --out8
>>>>>>
>>>>>> This means that I'm using device number 4 (adc), with 4 inputs and 8
>>>>>> outputs.
>>>>>>
>>>>>> After that you can write like this in you ChucK app:
>>>>>>
>>>>>> SinOsc s => dac.chan(3); // send sine wave to the fourth mono output
>>>>>>
>>>>>> Note that you'll have to take care of stereo if you want it:
>>>>>>
>>>>>> adc.chan(0) => LPF filterLeft => dac.chan(0);
>>>>>> adc.chan(1) => LPF filterRight => dac.chan(1);
>>>>>>
>>>>>> The tinkering bit with MOTU is that all combinations of numbers of
>>>>>> inputs and outputs don't work. For instance --in3 --out8 will have the whole
>>>>>> thing go bananas, with weird sound being outputted. If you don't use a MOTU
>>>>>> card there's a good chance you won't have this problem.
>>>>>>
>>>>>> /Stefan
>>>>>>
>>>>>> 2010/7/19 Patrick Guido <patrick.arminio at gmail.com>
>>>>>>
>>>>>>>  Hi, I've a sound card with 8 outputs (4 left and 4 right) and I want
>>>>>>> to send different audio signals to each output.
>>>>>>>
>>>>>>> Is this possible with chuck?
>>>>>>>
>>>>>>> Thanks
>>>>>>>
>>>>>>> --
>>>>>>> Patrick Guido Arminio
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> chuck-users mailing list
>>>>>>> chuck-users at lists.cs.princeton.edu
>>>>>>> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Release me, insect, or I will destroy the Cosmos!
>>>>>>
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>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Patrick Guido Arminio
>>>>>
>>>>> _______________________________________________
>>>>> chuck-users mailing list
>>>>> chuck-users at lists.cs.princeton.edu
>>>>> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Release me, insect, or I will destroy the Cosmos!
>>>>
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>>>>
>>>
>>>
>>> --
>>> Patrick Guido Arminio
>>>
>>> _______________________________________________
>>> chuck-users mailing list
>>> chuck-users at lists.cs.princeton.edu
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>>>
>>>
>>
>>
>> --
>> Release me, insect, or I will destroy the Cosmos!
>>
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>>
>
>
> --
> Patrick Guido Arminio
>
> _______________________________________________
> chuck-users mailing list
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>
>

-- 
Release me, insect, or I will destroy the Cosmos!
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