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 Forum index » DIY Hardware and Software » ChucK programming language
4 channels panning
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Phloxs



Joined: Jan 24, 2014
Posts: 17
Location: Russia

PostPosted: Tue Mar 31, 2015 7:19 am    Post subject: 4 channels panning
Subject description: How to pan sound between four soundcard outputs?
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Hello. I want to made some kind of ecosystem with sound objects.

All 'animals' in this system will move between channels and tell about their position to other 'animals'. For performance I want to use four or more audio sources. So how can I 'move' my 'animals' et.ex from channel 1 to channel 3 ?

I use 64 bit Debian GNU/Linux if it has matter.
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Antimon



Joined: Jan 18, 2005
Posts: 4086
Location: Sweden
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PostPosted: Tue Mar 31, 2015 1:33 pm    Post subject: Reply with quote  Mark this post and the followings unread

if you run

Code:
chuck --probe


You will see your devices (listed as "audio device 1", "audio device 2" and so on). Find your multi-output device in that list. Now you can start chuck like this:

Code:
chuck  --adc4 --in8 --out8 mychuckprogram.ck


...where the number after --adc is the device number in the list. The numbers after --in and --out are the amount of inputs and output that you want to use, respectively. You may have to fiddle with input and output count in non-obvious ways, depending on which sound interface you use. My Motu Ultralite Mk1 behaves weirdly if I try to make it use 3 outputs and 5 inputs, for instance - I will get broken sound on several outputs even if I only want to use one channel, or no sound at all.

In your chuck program, write code like this:

Code:

SawOsc mySaw => dac.chan(0);
SinOsc mySine => dac.chan(2);


to send a sawtooth sound to the first output and a sine sound to the third output (output numbering starts at zero in the program).

Hope that helps!

I should say that this is how I use it on a Mac. If you have any linux-specific problems hopefully someone else can help, or you can post a question to the mailing list:

https://lists.cs.princeton.edu/mailman/listinfo/chuck-users

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