February 2020 - chuck-users - lists.cs.princeton.edu

ChucK as LV2 or AudioUnit v3 plugin?
by Michael Heuer 25 Feb '20

25 Feb '20

Hello, Given recent linux-based hardware platforms that rely on the LV2 plugin interface https://www.kickstarter.com/projects/modduo/mod-dwarf <https://www.kickstarter.com/projects/modduo/mod-dwarf> https://shop.zynthian.org/shop/product/zynthian-bundle-all-kit-v3-326?categ… <https://shop.zynthian.org/shop/product/zynthian-bundle-all-kit-v3-326?categ…> and that libchuck is effectively dead-on-arrival as of recent iOS versions (something about standard system calls no longer allowable, if I remember correctly) https://github.com/mgyucht/libchuck <https://github.com/mgyucht/libchuck> Is there any interest in adapting ChucK to the LV2 plugin interface for linux or the AudioUnit v3 plugin interface for iOS and OSX? Ge, might open sourcing work done at SMULE for iOS be a possibility? Another target interesting to me is VCVRack, which has its own plugin interface https://github.com/VCVRack/Rack <https://github.com/VCVRack/Rack> https://vcvrack.com/manual/PluginDevelopmentTutorial <https://vcvrack.com/manual/PluginDevelopmentTutorial> Cheers, michael

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LiSa tutorial
by Daniel L. Trueman 24 Feb '20

24 Feb '20

hi all, i’ve gotten a number of requests for an old LiSa tutorial that disappeared for a while: http://dtrueman.mycpanel.princeton.edu/LiSa/LiSa_tutorial.html It’s been years since i looked at LiSa, but i hope this is useful! Dan

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Chuck source code ?
by herman verbaeten 24 Feb '20

24 Feb '20

Hi, Any one who can tell me where to find the source code of chuck? Thanks herman

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Re: [chuck-users] chuck-users Digest, Vol 174, Issue 26
by Matthew.Noone 24 Feb '20

24 Feb '20

Brilliant! Thanks Dan. M. Dr. Matthew James Noone Sarode Artist & Irish Research Council Postdoctoral Fellow Irish World Academy of Music and Dance University of Limerick ________________________________ From: chuck-users-bounces(a)lists.cs.princeton.edu <chuck-users-bounces(a)lists.cs.princeton.edu> on behalf of chuck-users-request(a)lists.cs.princeton.edu <chuck-users-request(a)lists.cs.princeton.edu> Sent: Monday 24 February 2020 09:27 To: chuck-users(a)lists.cs.princeton.edu <chuck-users(a)lists.cs.princeton.edu> Subject: chuck-users Digest, Vol 174, Issue 26 EXTERNAL EMAIL: This email originated from outside of the University of Limerick. Do not click on links or open attachments unless you recognize the sender's email address and know the content is safe. Send chuck-users mailing list submissions to chuck-users(a)lists.cs.princeton.edu To subscribe or unsubscribe via the World Wide Web, visit https://lists.cs.princeton.edu/mailman/listinfo/chuck-users or, via email, send a message with subject or body 'help' to chuck-users-request(a)lists.cs.princeton.edu You can reach the person managing the list at chuck-users-owner(a)lists.cs.princeton.edu When replying, please edit your Subject line so it is more specific than "Re: Contents of chuck-users digest..."

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SndBuf Passing args to running functions
by herman verbaeten 24 Feb '20

24 Feb '20

Hi, I'm in big trouble. I'v been trying for a long time now to change an argument in a running function. As you can see in my script i set a certain central pos ("70000")to buf.pos as a central position in my soundbuffer and i let my function LFOtoPOS circle around it. Once the "spork" instruction has started the process i can't figure out how to addresss the argument "centralpos" to change it on the fly or by another function or parameter. Some help please ... Kind regards, Herman ---------------------------------------------------------------------------------------------- me.sourceDir() + "sound.wav" => string filename; if( me.args() ) me.arg(0) => filename; SndBuf buf => dac; filename => buf.read; 1 => buf.pos; .5 => buf.gain; spork ~ LFOtoPOS(70000); fun void LFOtoPOS(int centralpos) { TriOsc lfo => blackhole; 1 => lfo.freq; centralpos => buf.pos; while (true) { 1::samp => now; (10000*lfo.last())$ int => buf.pos; } } // time loop while( true ) { 1000::ms => now; }

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SndBuf : the meaning and use of .loop and .interp
by herman verbaeten 23 Feb '20

23 Feb '20

Hi , Anyone who could explain the meaning of .loop and .interp in the Ugen LiSa? I can't find any exemples about it. Thanks in advance. Kinde regards, herman

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additional.info needed => LiSa
by herman verbaeten 23 Feb '20

23 Feb '20

Hi chucklist, Although the Ugen LiSa looks promising, it raises a lot of questions. First puzzling member: .record. Does this create a second buffer? And what’s the difference between .playpos and .valueAt? What’s the use of setting (or recording?) rampDown if this changes after changing the playback rate? What’s the difference between recRamp and rampDown? This is only a fraction of the many questions I have about LiSa. Kind regards, Herman

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While loop with condition =>NOW
by herman verbaeten 22 Feb '20

22 Feb '20

Hi, In the flossmanuals i found this exemple of modulation of the freq of a SinOsc. Normally in the while() loop, between the brackets is the condition to keep the loop running. In the example it is a time. Complete confusion! Kind regards Herman SinOsc s => dac; SinOsc lfo; 5 => lfo.freq; while (20::ms => now) { ( lfo.last() * 10 ) + 440 => s.freq; }

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Sending args to running function
by herman verbaeten 21 Feb '20

21 Feb '20

Hi, I'm in big trouble. I'v been trying for a long time now to change an argument in a running function. As you can see in my script i set a certain "centralpos" ("70000")to buf.pos as a central position in my soundbuffer and i let my function LFOtoPOS circle around it. Once the "spork" instruction has started the process i can't figure out how to addresss the argument "centralpos" to change it on the fly or by another function or parameter. Some help please ... Kind regards, Herman ---------------------------------------------------------------------------------------------- me.sourceDir() + "sound.wav" => string filename; if( me.args() ) me.arg(0) => filename; SndBuf buf => dac; filename => buf.read; 1 => buf.pos; .5 => buf.gain; spork ~ LFOtoPOS(70000); fun void LFOtoPOS(int centralpos) { TriOsc lfo => blackhole; 1 => lfo.freq; centralpos => buf.pos; while (true) { 1::samp => now; centralpos(10000*lfo.last())$ int => buf.pos; } } // time loop while( true ) { 1000::ms => now; }

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ADSR AttackRate, decayRate, sustainRate
by herman verbaeten 18 Feb '20

18 Feb '20

Hi, I was wondering what the function is of AttackRate, decayRate, sustainRate in ADSR. Normally when using an ADSR, attack only uses time. Same for decay and sustain. Also the declaration at the end of de memeber description is not very clear to me: The \e state = ADSR::DONE after the envelope value reaches 0.0 in the ADSR::RELEASE state. Thanks in advance for your assistance. Kind regards, Herman

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