Re: [chuck-users] Multi-channel weirdness (mike clew)

what does chuck —probe print out? Maybe you’re connecting to the wrong dac?? For reference, here’s an invocation script I used last time I did a multichannel performance: chuck -c8 -bufsize2048 -in2 --dac1 --adc0 INIT.ck That would have been an older version of chuck, but it worked then. PRC

From: mike clemow To: ChucK Users Mailing List

Hi folks,

Been a while, hope everyone is safe.

I'm experiencing something very strange and feel I must be doing something wrong. (MacOS 10.14.6)

Running chuck on command line like this:

$ chuck --dac7 --out7 --channels4 --srate48000 --verbose --loop

Then I run this file to test outputs:

SinOsc s0 => dac.chan(0); SinOsc s1 => dac.chan(1); SinOsc s2 => dac.chan(2); SinOsc s3 => dac.chan(3); 1::second => now;

Yields this error:

[chuck](VM): NullPointerException: (UGen link) on line[3] in shred[id=1: speaker_tester.ck]

Note: "line[3]"... it only thinks there are two dac channels. Indeed, I can only get sound out of dac.chan(0) and dac.chan(1).

I get the same behavior in chuck versions 1.4.0.1, 1.4.0.0, & 1.3.6.0 I get the same behavior in different sound cards with 4+ channels out.

BUT... the code works with 4 channels in miniAudicle!

What is going on? What am I doing wrong?

All best, Mike

-- Michael Clemow Artist/Composer/Sound Designer http://michaelclemow.com (he/him)