- chuck-users - lists.cs.princeton.edu

Re: [chuck-users] adc in terminal (Rob Hamilton asks)
by Perry Cook 03 Mar '20

03 Mar '20

Do a —probe to see how many adcs (and dacs) are there. Then try command line forcing to that adc. I find that if I’ve recently airplayed, or forget I have soundsource enabled, or sound flower, or some other real/virtual adc/dac, sometimes those are sticky in system audio and ChucK defaults to that instead of what you want. Prc Sent from my iPhone >> On Mar 3, 2020, at 9:15 AM, Hamilton, Rob <hamilr4(a)rpi.edu> wrote: >> >> TLDR: I'm seeing a strange behavior with adc not working in Terminal. >> >> OS X 10.14.5 Mojave >> 2019 MBPro >> chuck 1.4.0.0 numchucks >> >> Simple adc patches not working at all when run from Terminal. No error but no audio either. Same patches work in MiniAudicle (yay Spencer). >> >> Both built-in laptop mic or external interface give no sound. >> >> I can't find existing bugs for this. Anyone else see similar behaviors? >> >> I'm not dying to upgrade to OS X 10.15 this week but will if that fixes things. >> >> >> ----------------- >> rob hamilton, phd >> assistant professor of music and media >> rensselaer polytechnic institute >> west hall, 114 >> >> e: hamilr4(a)rpi.edu <mailto:hamilr4@rpi.edu> >> w: http://robhamilton.io <http://robhamilton.io/> >> t: @robertkhamilton >> _______________________________________________ >> chuck-users mailing list >> chuck-users(a)lists.cs.princeton.edu <mailto:chuck-users@lists.cs.princeton.edu> >> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users <https://lists.cs.princeton.edu/mailman/listinfo/chuck-users> >

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adc not recognized in terminal
by Hamilton, Rob 03 Mar '20

03 Mar '20

TLDR: I'm seeing a strange behavior with adc not working in Terminal. OS X 10.14.5 Mojave 2019 MBPro chuck 1.4.0.0 numchucks Simple adc patches not working at all when run from Terminal. No error but no audio either. Same patches work in MiniAudicle (yay Spencer). Both built-in laptop mic or external interface give no sound. I can't find existing bugs for this. Anyone else see similar behaviors? I'm not dying to upgrade to OS X 10.15 this week but will if that fixes things. ----------------- rob hamilton, phd assistant professor of music and media rensselaer polytechnic institute west hall, 114 e: hamilr4(a)rpi.edu w: http://robhamilton.io t: @robertkhamilton

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smoothing and scaling RMS data
by Andrew Telichan Phillips 29 Feb '20

29 Feb '20

Hello, I'm wanting to capture the amplitude envelope from a live source and generate feedback loops... I'm starting by obtaining RMS values, as per the examples on the home site: https://chuck.cs.princeton.edu/doc/examples/analysis/features/rms.ck First, does anyone have a preferred way of filtering the data that effectively captures transients and smoothes the decay? Second, is there a way to scale the range of this smoothed data - that is, map it onto a defined range to use as a parametric control for another UGen? While I'm at it, does ChucK have a filter for DC leak? I'm new to ChucK and am used to work, so I appreciate any help (and patience).

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ChucK as LV2 or AudioUnit v3 plugin?
by Mario Buoninfante 29 Feb '20

29 Feb '20

+1 LV2 & Linux :)

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overloading (assignment) operators
by mario buoninfante 28 Feb '20

28 Feb '20

Hi all, I think I know the answer, but I'd like to ask the question anyway since it could trigger interesting discussions. Is it possible to overload operators in ChucK? I was thinking about having something like the following: private class PInt { 0 => int value; function void __chuck__ (int x) // or PInt operator=> (int x) { x => this.value; } } so that then, assuming I have a PInt instance MyInt, I can just do something like that: 12 => MyInt; Cheers, Mario -- electronic musician, sound artist, creative coder, QA engineer https://vimeo.com/creativecodingsalerno http://mbuoninfante.tumblr.com/ https://github.com/mariobuoninfante https://bitbucket.org/mariobuoninfante/

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Clipping using multiple SndBuf files
by Matthew.Noone 28 Feb '20

28 Feb '20

Hi, I'm just wondering the best way to avoid clipping when using multiple SndBuf files in code? I'm making a composition using machine.add script and there is a lot clipping when the new scripts come in. Is the best thing to add Envelopes in the individual codes? Or is there some better way? Thanks, M Dr. Matthew James Noone Sarode Artist & Irish Research Council Postdoctoral Fellow Irish World Academy of Music and Dance University of Limerick

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SndBuf .interp has no effect on smoothness
by herman verbaeten 28 Feb '20

28 Feb '20

Hi, I was told that in order to smoothen my slow-rated sample playback i should use .interp. In the script i added it but I don't hear any difference. Help! me.sourceDir() + "sound.wav" => string filename; if( me.args() ) me.arg(0) => filename; SndBuf buf => dac; filename => buf.read; 2 => buf.interp; .2 => buf.rate; buf.length() => now; // play him 1::ms => now; // wait a bit 1 => buf.loop; // loop homer now buf.length() => now; // for 2 seconds .1 => buf.rate;

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Re: [chuck-users] SndBuf use of .loop and .interp (herman asked)
by Perry Cook 27 Feb '20

27 Feb '20

.interp doesn’t do what you think it does. It just specifies the type of internal interpolation for smoothing of playback (only applicable for non 1.0 rates). SndBuf .loop just tells it to start over at the beginning when it reaches the end (or end after reaching the beginning): SndBuf s => dac; "special:dope" => s.read; // load homer s.length() => now; // play him second => now; // wait a bit 1 => s.loop; // loop homer now 2*second => now; // for 2 seconds -1 => s.rate; // then play him backward 2*second => now; // for two more If you need to loop a specific piece of a sound in SndBuf, you should either: edit that in a sound editor and save/ it as a new file. Figure out the exact sample points within the wave that should be your start and end loop points. Then use .pos and => now to loop it. You don’t even need .loop mode for that, because it will keep playing as long as the start is within the buffer boundaries. If you want smooth looping without pops at the edges, you could maybe use an ADSR to smooth the beginning and end. Not sure of your application here, but SndBuf is not a flexible sample playback UGen that knows about loops like a SoundFont player would. PRC > From: herman verbaeten <hverb54(a)hotmail.com> > > Hi, > > In my attempt to loop-play 1 portion of the soundbuffer for a certain periode time(2000 milliseconds in my example) i get a kind of clicking when the geginning of the sample pos is different from the ending.. > Maybe .loop and .interp of SndBuf is a solution here. Anyone who knows how to use them? > Kind regards, > Herman > > me.sourceDir() + "aeiou.wav" => string filename; > if( me.args() ) me.arg(0) => filename; > SndBuf buf => dac; > filename => buf.read; > > fun void looper() > { > while(true) > { > 1500::samp => now; > 50000 => buf.pos; > }} > spork ~ looper(); > > 2000::ms => now; >

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Re: [chuck-users] Global Variables (herman asked)
by Perry Cook 27 Feb '20

27 Feb '20

You script got scrubbed for some reason, but I suspect that you’re shadowing the global somehow locally (if you use the same name as an argument or a local within a function, it masks the global version). Here’s a simple example of using a global: 1000 => float freqGlob; // global frequency variable SinOsc s => dac; // note that this osc is treated globally as well spork ~ sweep(); while (true) { // main loop randomly (re)sets freq Std.rand2f(500.0,3000.0) => freqGlob => s.freq; Std.rand2f(0.3,1.0)::second => now; } // this shred sweeps the frequency exponentially down fun void sweep() { while (true) { (0.999*=> freqGlob) => s.freq; ms => now; } }

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inter-shred communication - using global
by herman verbaeten 27 Feb '20

27 Feb '20

Hi, In " ChucK : Language Specification > Concurrency & Shreds" i read about using global variables. Unfortunately i don't succeed changing the variables in a way that the function uses this changed value of the variable. It keeps on using the old (initial) value of this variable. What am i doing wrong?? This is my script:

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