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question about Jack / Chuck interactions
by Daniel Chapiro 20 Aug '15

20 Aug '15

Hi - I hope someone has run into this before. After I installed Jack (to use with Faust, not with Chuck), each time that Chuck runs, it issues a bunch of error messages. If Jack is running, the list of errors is several pages long. If Jack is not running, I get: JAR: Blacklisted client Xquartz JAR: Blacklisted client Terminal JAR: Blacklisted client loginwindow JAR: Blacklisted client Xcode JAR: Blacklisted client SystemUIServer Cannot connect to server socket err = No such file or directory Cannot connect to server request channel jack server is not running or cannot be started JAR: jack server not running or rejected client In either case ChucK seems to run OK. Is this a bug, or is there something that I can do to avoid these messages? Thanks! Daniel

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Static Arrays
by John Clavin 25 Jul '15

25 Jul '15

Hi, I did a ChucK project last year that used public classes and static ints to send data to machines. I was wondering if there are any new developments in sending static arrays to machines. The newest information I can find on this subject dates back to 2007. John Clavin

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OscIn: error: unable to create server instance
by ermina＠studioplume.com 09 Jun '15

09 Jun '15

Hello, so far i have been chucking exclusively from within the miniAudicle (1.3.3). I am using the jack-enabled linux 64 bits version, on Linux Mint Betsy (which is mostly Debian 8). Today i wanted to try the command-line (chuck --loop and chuck + file.ck) and it seems the behavior of the VM is somehow different. Instantiating an OscIn object does not work in the cli, it returns: "OscIn: error: unable to create server instance". I was using the same version of chuck (1.3.5.0) as bundled with miniAudicle. Using -v9, the logs between chuck --loop and miniAudicle console are identical. If i start the VM in the miniAudicle (accepting network commands) and then use chuck + file.ck, file.ck is shredded correctly and OscIn created. That problem might be related to my config since on a second machine this error does not happen (1.3.4.0 64bits. I copied the chuck executable over to the first computer and the error was there again. Is there something obvious i am missing / should be looking for ? Thanks for your help. . e

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Help.
by J Alexander Diaz 08 Jun '15

08 Jun '15

Hi Folks! I'm needing help understanding what the code for the frequency down below in bold text is doing. Context: I'm trying to build a code that will randomly pick frequencies and rhythms within a given range. As time passes my goal is to write a code that will also allow the frequencies and rhythms to change. I know I'm not ready to understand how to code this yet as I am teaching myself at my own pace. But I would like some help if maybe someone could talk me through what the frequency portion of this code is doing. I took the frame of most of my code from a ChucK example and am changing it for a composition of mine. I don't understand the relationship between the scale part and the freuency part. I don't understand the Math.pow. I do understand math.random2, int, and freq. Thank you much!! // Sitar Sitar sit => JCRev r => Echo a => dac; // gain .56 => r.gain; // reverb mix 1.12 => r.mix; // max delay for echo 1120::ms => a.max; // set delay for echo 112::ms => a.delay; // initial effect mix 0.0 => a.mix; *// scale* *[ 15 ] @=> int scale[];* *// freq* * scale[Math.random2(0,scale.cap()-1)] => int freq;* * 220.0 * Math.pow( 1.05946, (Math.random2(0,2)*12) + freq ) => sit.freq;* // loop while( true ){ //pluck Math.random2f( 0.1, 0.9 ) => sit.noteOn; //time Math.random2f( .01, 1000 )::ms => now; } -- J. Alexander Diaz www.diazsounds.com MFA Student - Music Composition jalexander(a)diazsounds.com [image: VCFA] <http://vcfa.edu/>

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Importing modules
by Ronan Klyne 29 May '15

29 May '15

Hi all, I apologise if I'm just missing the relevant documentation, but I can't see how to import classes from one module into a second module. I want to declare a big base class once and subclasses in a different file. Can anyone tell me if this is possible? Thanks, Ronan -- # r

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ChucK and vim
by Meino.Cramer＠gmx.de 28 May '15

28 May '15

Hi, Since vim is my favourite editor since years I want to use chuck with vim. I tried miniAudicle but I get no sound for whatever reason. I googled for 'chuck vim' and found several different matches...but what to choose and what is recomended? Thank you very much in advance for any help and hint! Best regards, Meino

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ChucK, JCRev and stability (frequent crashes)!
by Niklas Reppel 28 May '15

28 May '15

Hi everybody, i have some osc-triggered synth shreds like the one attached, and tried to spice things up using pan control (basic, i know ...). Now, for the music i have in my mind, the respective shred is triggered about 10 - 15 times per second via OSC, and there are multiple of those shreds, including some granulation shreds. Now, even when i only trigger the attached shred with different pan values, ChucK crashes after a few seconds ... so i don't know, is the shred faulty, or is chuck simply not capable for what i have in mind ? Btw, i'm using Arch linux on a pretty recent laptop with plenty of ram and a fast processor, so resources should not be an issue ... ChucK error message: (JACK) the JACK server is shutting down this client... ... stream stopped and closed! [chuck]: cleaning up... terminate called after throwing an instance of 'RtError' what(): RtApi:: a stream is not open! JACK error message subgraph starting at ChucK timed out (subgraph_wait_fd=9, status = 0, state = Running, pollret = 0 revents = 0x0) Regards, nik

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[chuck]: cannot bind to tcp port 8888...
by Amir Teymuri 23 May '15

23 May '15

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Re: [chuck-users] Stereo example problem with chuck-1.3.5.1 (Julien Saint-Martin)
by Casper Schipper 13 May '15

13 May '15

Hi Julien, I can confirm the error here on OSX 10.10 with 1.3.5.1 with that array.ck example. also found that: Noise n[1] => Pan2 p => dac; p.gain(0.1); minute => now; crashes my mini-audicle. Weird, I think it was working correctly in the past ? Best, Casper > On 08/05/2015 14:50, Julien Saint-Martin wrote: >> Hi friends, >> >> I just installed chuck-1.3.5.1 on linux and I have this error when >> trying to run /examples/stereo/array.ck : >> >> [array.ck]:line(6): array ugen type 'Pan2' has more than one input >> channel - can only => array of mono ugens >> >> Is it only on my side or anyother can see this error ? >> >> Thanks >> Julien > > > > > _______________________________________________ > chuck-users mailing list > chuck-users(a)lists.cs.princeton.edu > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users

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Re: [chuck-users] 1. Stereo example problem with chuck-1.3.5.1 (Julien Saint-Martin)
by Perry Cook 11 May '15

11 May '15

Yep, this is broken as written in the examples. I think that Spencer and Ge were looking at modifying ChucK so this would work, but for now you have to explicitly wire up things. Spencer/Ge, chime in here if I”m wrong and this is now implemented, but I don’t see it working for me. To fix, you can modify the first few lines to look like this. Note that we hook up each SndBuf to a pann, then we hook the left and right outputs of each pan to the left and right reverbs. // dope storm // using arrays as UGen busses // author: Spencer Salazar - spencer(a)ccrma.stanford.edu // date: May 2013 SndBuf buf[32]; Pan2 pan[32]; NRev reverb[2]; reverb[0] => dac.left; reverb[1] => dac.right; 0.1 => reverb[0].mix; 0.11 => reverb[1].mix; for(int i; i < buf.cap(); i++) { // load dope sound "special:dope" => buf[i].read; // set to end buf[i].samples() => buf[i].pos; buf[i] => pan[i]; pan[i].chan(0) => reverb[0]; pan[i].chan(1) => reverb[1]; }

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Stereo example problem with chuck-1.3.5.1
by Julien Saint-Martin 11 May '15

11 May '15

Hi friends, I just installed chuck-1.3.5.1 on linux and I have this error when trying to run /examples/stereo/array.ck : [array.ck]:line(6): array ugen type 'Pan2' has more than one input channel - can only => array of mono ugens Is it only on my side or anyother can see this error ? Thanks Julien

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Jack Server shuts down ChucK client ...
by Niklas Reppel 01 Apr '15

01 Apr '15

So, i'm trying to write a simple SawOsc-Synth with Polyphony, triggered by OSC messages ... You can check it out here: https://github.com/the-drunk-coder/graa/blob/master/shreds/buzz.ck As i want to use a filter with adsr, i can't just spork a single method right ? But, with the current version, the Jack-Server (i'm on Linux) shuts the client down, with the following message: (JACK) the JACK server is shutting down this client... ... stream stopped and closed! Anyone's got an idea why ? Regards, Nik

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Saving state
by Atte 22 Mar '15

22 Mar '15

Hi What are the options for saving a state in recalling it in chuck. I'm mainly thinking saving/loading arrays, but objects would be great... Thanks in advance! -- Atte http://atte.dk http://a773.dk

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Re: [chuck-users] is shred running? (Atte)
by Perry Cook 16 Mar '15

16 Mar '15

Atte, A handy list of Shred functions (From our new Book, Appendix A :-): The ones you want are running() or done() Shred.fromId(int id) Returns shred object corresponding to id. int id(); Returns the ID number of the shred. void yield(); Causes the shred to temporarily discontinue processing and allows other active shreds to run. void exit(); Schedules the shred for immediate termination. int running(); Returns 1 if shred is still running, 0 otherwise. int done(); Returns 1 if shred has finished, 0 otherwise; except in rare cases, this is the opposite of done(). int args(); Returns the number of command-line arguments. string arg(int num); Returns command-line argument at position num. string me.dir(); Returns the directory from whence this shred came. string me.dir(int numUp); Returns numUp directories from whence this shred came; numUp can be positive or negative, with the same result. > On Mar 4, 2015, at 9:00 AM, chuck-users-request(a)lists.cs.princeton.edu wrote: > > Message: 1 > Date: Wed, 04 Mar 2015 12:51:11 +0100 > From: Atte <atte(a)youmail.dk> > To: ChucK Users Mailing List <chuck-users(a)lists.cs.princeton.edu> > Subject: [chuck-users] is shred running? > Message-ID: <54F6F1AF.6070209(a)youmail.dk> > Content-Type: text/plain; charset=utf-8 > > Hi > > I spork a file like this: > > Machine.add(filename) => int id; > > Is there a way to later on figure out if the shred is still running? > > -- > Atte > > http://atte.dk http://a773.dk > > > ------------------------------ > > _______________________________________________ > chuck-users mailing list > chuck-users(a)lists.cs.princeton.edu > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users > > > End of chuck-users Digest, Vol 116, Issue 1 > *******************************************

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extending buildin Ugen (eg SndBuf)
by Atte 14 Mar '15

14 Mar '15

Hi Thought I could inherit from SndBuf and extend by overiding some funtions: public class Beat extends SndBuf{ int last_pos; fun void tempo_match(dur match_length){ length()/match_length => rate; } fun void pos(int sample){ if(sample < 0){ last_pos => sample; } sample => s.pos => last_pos; } fun void random(int nb_slices){ Math.random2(0,nb_slices-1) * samples()/nb_slices => pos => last_pos;; } } but chuck gives me: [lib_beat2.ck]:line(13): function 'Beat.pos' matches 'SndBuf.pos' but cannot override... Any way to achieve what I'm trying to do? Cheers -- Atte http://atte.dk http://a773.dk

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Re: [chuck-users] Heavy distortion/clipping in Windows (Kassen)
by Perry Cook 13 Mar '15

13 Mar '15

Kas/others, It's even a little stranger than one might think. On Mac OSX, it's really hard to clip at all. For example, this code: SinOsc s => dac; 8.0 => s.gain; second => now; runs and sounds fine. You might need to turn your master system volume down so it doesn't blow out your headphones or speakers, but if you do that, you will hear a pretty pure sine wave. The proper gain for this should be 1.0 (the default), but it works ok up to pretty large numbers, but only on Macs. I haven't tried this in a VM Windoze on Mac, and I'm not sure how the audio is virtualized in this case. BUT This very same code would cause hideous distortion on a Windows/ Linux machine, because those audio subsystems have a hard limit on the amplitude that can be sent into the dacs. Mac seems to have figured out a how to deal with this in a very different (floating point) way. PRC > 2. Re: Heavy distortion/clipping in Windows (Kassen) > > Message: 2 > Date: Thu, 19 Feb 2015 19:44:05 +0100 > From: Kassen <signal.automatique(a)gmail.com> > To: ChucK Users Mailing List <chuck-users(a)lists.cs.princeton.edu> > Subject: Re: [chuck-users] Heavy distortion/clipping in Windows > Message-ID: > <CAK4G45dtCcjRuEwiVmcKRHnLcNe6S3me5__oqOOzfm20NErSsA(a)mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > On 19 February 2015 at 18:59, Perry Cook <prc(a)cs.princeton.edu> wrote: > >> Ack! This is a common problem, and I thought I had caught all of >> the clipping/distortion cases on Windows/Linux with our last >> passes on checking the source code. I'll check it all again and >> put it in our Errata file for future ChucK/Mini releases, and future >> printings of the book. >> > > Perry, now that you mention the OS's I'd like to share a thought. I wanted > to postpone debating OS audio infrastructure because debates on OS features > tends to lead to debates on OS preferences and the next step is likely to > be total war and so I thought I'd try to figure out what was going on on my > own. ;-) > > Am I correct in understanding that you are saying the files could have been > made on OSX with the system audio gain set to -say- 0.5? Then ChucK's > output could reach peaks of -say-1.5 , it's get attunated and be at .75 > when hitting the DAC; perfectly fine. In this case the audio reaching such > amplitudes at ChucK's output might go unnoticed by the file's author. Under > OS's with a audio infrastructure expressed in int's a output of 1.5 at the > ChucK dac would clip at 1 at hitting the OS's audio rating and the final > output (assuming identical system volume) would end up at a 0.5 amplitude > while being heavily clipped. Is that correct? > > Yours, > Kas.

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Re: [chuck-users] ChucK on Yosemite
by Perry Cook 13 Mar '15

13 Mar '15

I'm using the hell out of it on Yosemite. Only problems I've observed are: Something odd going on with Processing sending OSC to ChucK. It works sometimes, then not. Something odd going on with networked pieces like CliX, Gamelan, etc. Possibly a new machine/firewall settings issue rather than Yosemite Not Yosemite problem, but newer machine problem: SSD machines have no SMS hardware, so all PLOrk canon examples that use the accelerometers like droner, my LORx Aeterna, BBLVL, etc. die on launch. I've hacked versions that check for SMS, then fail by opening up a listen for TouchOSC tilt messages thread. Then you can just lay your phone on the computer and it all works fine. PRC > On Mar 13, 2015, at 9:00 AM, chuck-users-request(a)lists.cs.princeton.edu wrote: > > 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..." > > > Today's Topics: > > 1. Yosemite (Daniel L. Trueman) > 2. Re: Yosemite (Paul B) > 3. Re: Yosemite (Michael Heuer) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Thu, 12 Mar 2015 21:03:29 -0400 > From: "Daniel L. Trueman" <dtrueman(a)princeton.edu> > To: ChucK Users Mailing List <chuck-users(a)lists.cs.princeton.edu> > Subject: [chuck-users] Yosemite > Message-ID: <3069E145-43E4-43F6-8F66-069F782D1B32(a)princeton.edu> > Content-Type: text/plain; charset=windows-1252 > > hey all, what?s the current status of ChucK on Yosemite? does it work? someone tell me not to upgrade please? > > tanks, > dan > > ------------------------------ > > Message: 2 > Date: Thu, 12 Mar 2015 19:16:49 -0600 > From: Paul B <witchbutter(a)gmail.com> > To: ChucK Users Mailing List <chuck-users(a)lists.cs.princeton.edu> > Subject: Re: [chuck-users] Yosemite > Message-ID: > <CAApX0EtXaU1w=CuA4PZo85VbQSNWZjb+NoS=eFJ87PRLbA7zmg(a)mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > Works fine for me. > On Mar 12, 2015 7:03 PM, "Daniel L. Trueman" <dtrueman(a)princeton.edu> wrote: > >> hey all, what?s the current status of ChucK on Yosemite? does it work? >> someone tell me not to upgrade please? >> >> tanks, >> dan >> _______________________________________________ >> chuck-users mailing list >> chuck-users(a)lists.cs.princeton.edu >> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users >> >

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Any way to call an arbitrary function with some value
by Rich Caloggero 12 Mar '15

12 Mar '15

I’m pretty sure I know the answer to this already – its not a dynamic language... However, I can put a UGen method into a variable, but I cannot apply it: ... SndBuf2 input; input.gain @=> Object f; ... This compiles, but can I apply it to an argument? Am trying to find a way of modifying arbitrary parameters via osc that doesn’t include writing unmaintainable code: ... if (parameterName == “gain”) myUgen.gain (value); ... etc ... Am I missing something...? -- Rich

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OSC Server
by Rich Caloggero 10 Mar '15

10 Mar '15

I’ve written a very simple osc server which shuttles messages between chuck and a browser (only tested via Firefox so your milage may vary). I’ve written helper classes for chuck that make it easy to make a parameter modifiable remotely. The browser connects to the server via socket.io and the chuck instance uses UDP to talk to the server via osc. The server is written in node.js. Get code: http://www.mit.edu/~rjc/dev/oscServer-2015-3-10.zip Basic docs are included in the .zip and is also at: http://www.mit.edu/~rjc/dev/oscServer.html -- Rich

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That dreaded ASIO beast
by Eugene Martynec 05 Mar '15

05 Mar '15

Has anyone had any success with the ASIO offerings from several years ago? Thank you

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is shred running?
by Atte 04 Mar '15

04 Mar '15

Hi I spork a file like this: Machine.add(filename) => int id; Is there a way to later on figure out if the shred is still running? -- Atte http://atte.dk http://a773.dk

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Possible bug in chuck 1.3.5.0, beta 7, win32
by Rich Caloggero 25 Feb '15

25 Feb '15

/* Possible bug in chuck 1.3.5.0, beta 7, win32 the following is typical osc out -- see examples/osc/s.ck. The issue is that I want to simply send one packet, not a continuoue stream of data. If I remove the while loop, chuck crashes. If I break out of the while loop (uncomment the break below), chuck crashes. If I use any other block (if statement, or just braces with no leading clause), chuck crashes. Can someone explain this behavior; it makes no sense to me!!! */ "localhost" => string hostname; 9999 => int port; OscOut xmit; xmit.dest( hostname,port); while (1) { xmit.start( "/input/gain" ); xmit.add (2.2); xmit.send(); //break; 1::ms => now; } // while

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chuck --loop not working on windows
by Rich Caloggero 24 Feb '15

24 Feb '15

I’ve written about this before, but the problem persists even with the latest build: 1.3.5.0 (beta 7), win32 I’m running on 64-bit windows; might this be the issue? Using bash syntax here. I’ve run under cmd.exe and under git bash with exactly same results. If I say: $ chuck –loop & then say: chuck + otf_01.ck while in the examples directory, I get: -- chuck: remote operation timed out the shell tells me that the first process exited with code 23 windows does it’'s “unknown error” dialog box thing and offers to close the program. I click “close” or “cancel” ... I’ve used other permutations of “-p” with numberic argument on both invocations and –remote with hostname of 127.0.0.1, added –server (seems to be valid option but not described anywhere), and same result. However, if I start two terminals, cd to examples/osc, and in one say: chuck r.ck #with no trailing “&” so it stays in foreground and in second terminal say: chuck s.ck #separate vm invocation – no “+” here then things work fine – i.e. the two separate VMs communicate via OSC just fine. Any idea what’s going on here? -- Rich

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Re: [chuck-users] Problem building miniAudicle under EasyPeasy Linux
by David 23 Feb '15

23 Feb '15

I decided to ditch EasyPeasy, since nobody seems to be supporting it any more, and I installed a different distro (Peppermint Linux). It has a newer version of qtmake in its repositories, and I was able to build miniAudicle with no problem. You might want to add a note to the build instructions, though, telling people they need at least version 4.8 of qtmake. Thanks for your help. If you ever need someone to help test under Linux, let me know.

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Re: [chuck-users] Heavy distortion/clipping in Windows
by Perry Cook 19 Feb '15

19 Feb '15

Ack! This is a common problem, and I thought I had caught all of the clipping/distortion cases on Windows/Linux with our last passes on checking the source code. I'll check it all again and put it in our Errata file for future ChucK/Mini releases, and future printings of the book. As others have noted, the solution is to scale the output gain of all of the components, but just by the amount necessary to get rid of the clipping. I'm also going to give you a non-state-approved but useable quick solution. I really don't recommend that people get in the habit of doing this, but it's possible to set the gain of the global dac object. 0.4 => dac.gain; is legal, and works. It's also global and persistent, so you only have to do it once in one place and it sticks for all other, and subsequent code that goes through the dac. This is a really quick way to get rid of clipping if you have it. Set it to 0.8 or 0.6 or 0.5 or whatever gets rid of the distortion. Once you've figured that out, I'd recommend going back and scaling the output of all of the contributing components (the different players in the jazz band in this case) by that amount. Then you can set dac gain back to 1.0 where it's supposed to be and delete the line that sets it to anything other than 1.0. You could also delete the line that sets dac gain, then stop/restart the VM. That resets it to 1.0 as well. Another possible solution if you have only one file that's clipping a little is to put a Dyno object just before the dac. It's set up by default to help limit output to try to avoid clipping. But in this case where you have multiple instruments, putting a Dyno on each one wouldn't help, because their aggregate outputs mixed inside the dac would still clip. Hope this helps, and sorry for the confusion. PRC

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