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

Problems with running VM in terminal (Windows 7 64-bit)
by [chriswicks] 25 Apr '12

25 Apr '12

Hello all! I am having a strange problem on my desktop PC running Windows 7 Professional 64-bit. I have the chuck.exe binary installed for both the Windows cmd prompt (Windows/System32 folder) and for Cygwin, and it works directly (i.e. chuck foo.ck). However, when I start the VM using chuck --loop, I can't seem to add any shreds to the VM. It doesn't throw an error message or anything, and it appears to start as it should, it just doesn't seem to be listening to any input that I throw at it. I type "chuck + foo.ck" and there is no error message and no output in the terminal that is running "chuck --loop". The same error occurs in both Cygwin and in the basic Windows command-line programs. I have everything working fine (having followed the same exact steps) on my laptop running Windows 7 Home Premium 64-bit, and everything works fine (with some Jack finagling) on my Linux partition on both machines, but I'd like to be able to work in Windows on my desktop, as that is where I spend the bulk of my time for now. Thanks for any advice!

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getting current script path ?
by henrique matias 20 Apr '12

20 Apr '12

I tried: : me.arg( 0 ) => perhaps it returned some internal id : me.arg( -1 ) => good way of crashing chuck, don't try this at home! Did someone figure this out ? peace, hems

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Re: [chuck-users] ChucK on the web: NodeJS / HTML5
by Colin Sullivan 20 Apr '12

20 Apr '12

On Fri, Apr 20, 2012 at 12:00 AM, <chuck-users-owner(a)lists.cs.princeton.edu>wrote: > You are posting to a member-only list. Please join the list or email > the list moderators for assistance. > > > > ---------- Forwarded message ---------- > From: Colin Sullivan <colinsul(a)ccrma.stanford.edu> > To: ChucK Users Mailing List <chuck-users(a)lists.cs.princeton.edu> > Cc: > Date: Thu, 19 Apr 2012 23:59:41 -0700 > Subject: Re: [chuck-users] ChucK on the web: NodeJS / HTML5 > Matt, > > I haven't heard of anyone doing what you are describing. > > Some related projects: > > https://github.com/mauritslamers/node.rtaudio > > http://audiolibjs.org/ - http://www.charlie-roberts.com/gibber/ - browser > synthesis action > > I managed to send raw audio data over websockets before, but I don't see > this performing well at scale. It may be possible to compress chunks on > the fly to stream, but I haven't tried this. > > https://github.com/nddrylliog/jsmad - I think there is an Apple Lossless > one too. > > Let me know how things work out! > ---------- > Colin Sullivan > > > > 2012/4/19 Matt Diamond <mdiamond(a)jhu.edu> > >> Has anyone had any experience with using ChucK in a web context? For >> example, two things I'd be interested in as a web developer: >> >> 1) streaming ChucK audio output from a NodeJS server to the browser >> 2) a javascript client-side ChucK implementation utilizing the Web Audio >> API >> >> Has there been any work on either of these? >> >> Matt Diamond >> >> _______________________________________________ >> chuck-users mailing list >> chuck-users(a)lists.cs.princeton.edu >> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users >> >> > >

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ChucK on the web: NodeJS / HTML5
by Matt Diamond 20 Apr '12

20 Apr '12

Has anyone had any experience with using ChucK in a web context? For example, two things I'd be interested in as a web developer: 1) streaming ChucK audio output from a NodeJS server to the browser 2) a javascript client-side ChucK implementation utilizing the Web Audio API Has there been any work on either of these? Matt Diamond

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esp.beat - cybernetic orchestra CD
by David Ogborn 19 Apr '12

19 Apr '12

Hello friends, The debut album "esp.beat" from the Cybernetic Orchestra here at McMaster was released in a special CD release event ("Resonant") at the Factory Media Arts Centre during Hamilton's monthly James Street N art crawl last Friday (April 13 2012). We distributed just over 200 CDs to an enthusiastic audience of just over 300 people - it was quite a blast! I'm sure we'll do it again soon... The entire album is available online via soundcloud - here's the link: http://soundcloud.com/cyberneticorchestra/sets/esp-beat The album has been made available under a Creative Commons Attribution Non-commercial Share-a-like license (CC BY-NC-SA). How is the orchestra performing this music you may ask? A lot of it is live coding using Chuck and the miniAudicle. Some of it is some MaxMSP instruments created by orchestra members. Behind the scenes we are using rough prototypes of the espTools software (forthcoming) for communication and beat sharing. We'll be posting some more improv recordings (including some from the CD release party) shortly, and some video footage collected over the past 14 months throughout April and May. But in the meantime we hope you enjoy this acousmatic edition of our music! Yours truly, David, on behalf of the Cybernetic Orchestra ------------------------------------------------------------------- Dr. David Ogborn, Assistant Professor Communication Studies & Multimedia Director, Cybernetic Orchestra & ESP Studio McMaster University, Hamilton, Canada ogbornd --at-- mcmaster.ca http://davidogborn.net http://twitter.com/ogbornd http://esp.mcmaster.ca (Cybernetic Orchestra) 1-905-525-9140 ext 27603

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Gedit Plugin for ChucK?
by [chriswicks] 18 Apr '12

18 Apr '12

Does anyone know of a plugin for gedit that contains syntax/keyword highlighting/etc. for editing ChucK programs? I really want to like the miniAudicle, and it has a lot of potential, but I have issues saving files if I instantiate the program via the terminal. Issues meaning that it won't save any changes that I make to a file if I instantiate miniAudicle from the terminal, at least on the Linux version (Ubuntu 32-bit, miniAudicle built from most recent source). Thanks for any info!

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different classes and files talking to each other
by henrique matias 18 Apr '12

18 Apr '12

Hello folks, hope everything is great over there! ( : Am new to chuck, needless to say am impressed! Am a bit confused how to share and control different classes and files from a central "machine". The first idea was to create a static Event var and put every class listening to this event, but unfortunately we still can't instantiate non-native objects as static. Would someone please point me to some basic structure/example? Thanks a lot! Happy chucking!

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SndBuf problem
by giulio 16 Apr '12

16 Apr '12

Hello, I'm searching information about SndBuff and WvOut (and WvIn?) In the same project I want to record and play sounds but I have some problems... To explain: adc => Gain g => WvOut wOut => blackhole; .5 => g.gain; SndBuf buf => dac; "/.../blablabla.wav" => string filename; filename => wOut.wavFilename; 5::second => now; wOut.closeFile; //5::second => now; //filename => buf.read; //5::second => now; me.exit(); ...No problem... adc => Gain g => WvOut wOut => blackhole; .5 => g.gain; SndBuf buf => dac; "/.../blablabla.wav" => string filename; //filename => wOut.wavFilename; //5::second => now; //wOut.closeFile; //5::second => now; filename => buf.read; 5::second => now; me.exit(); ...No problem... But adc => Gain g => WvOut wOut => blackhole; .5 => g.gain; SndBuf buf => dac; "/.../blablabla.wav" => string filename; filename => wOut.wavFilename; 5::second => now; wOut.closeFile; 5::second => now; filename => buf.read; 5::second => now; me.exit(); ...Return: chuck: ugen_xxx.cpp:2637: void sndbuf_ctrl_read(Chuck_Object*, void*, Chuck_DL_Return*, Chuck_VM_Shred*): Assertion `d->fd == __null' failed. Why? Thanck you, Giulio.

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Beginner question about audio artifacts
by Chris Wicks 15 Apr '12

15 Apr '12

Hello! I'm relatively new to programming and to ChucK in particular. I have an issue in which, whenever a new shred is introduced to the virtual machine (chuck --loop running in a terminal....also happens on miniAudicle) I get significant artifacts. I've tried using the command line option for increasing buffer size to no avail. I'm running ChucK on Windows 7 Pro 64-bit. Audio drivers are Realtek (may not be the latest version). I get the same issue on mu laptop running Windows 7 Home Premium 64-bit. Do I need to bite the bullet and shell out for a dedicated sound card? Could it potentially be a driver issue? I'm at a bit of a loss. Thanks for any help!

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Re: [chuck-users] Most recent Chuck for Lion?
by Anthony Bowyer-Lowe 09 Apr '12

09 Apr '12

> > I've been running Chuck on a MacPro with a Cinema Display, and I notice > that the audio device switching isn't handled well by either the > hardware/OS, or other audio apps. Often I have to diddle around with the > Sound Preferences output to get Amadeus or Reaper to play to my headphones, > or the display audio, instead of the internal speaker. So perhaps this has > something to do with it. > I can't promise this will help, but I'm a fan of running Rogue Amoeba's free Sound Source app on OS X which makes selecting the machine's audio output really quick and simple: http://rogueamoeba.com/freebies/ (bottom of page) It overrides the Mac's automatic device switching so just may be a fix. I don't know if it works on Lion - it's a bit old - but it functions great on Snow Leopard. Anthony.

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Various general questions
by Robin Haberkorn 31 Mar '12

31 Mar '12

Hi! I'm relatively new to ChucK. I knew it for some time but only now I start using it "seriously". I have a couple of questions and hope that you may answer them: 1) Does ChucK have a public source repository? (This question may be off-topic...) I understand that CVS was used but I think I read somewhere that it was replaced with SVN. The Git repo here (http://repo.or.cz/w/chuck-blob.git) hasn't been updated for a long time and thus cannot reflect the recent changes some of you are talking about in the mailing list. Having a public repo somewhere could greatly facilitate the project and I feel that it is a must-have for every modern open source project. As I'm a developer myself, I might get tempted to fix one of the many bugs ChucK unfortunately still has. Without the repo, I cannot check whether it is already fixed in the development branch. Without the repo or any nightly exports, people cannot try out and test new features, give feedback, etc... 2) Is there a real bug tracker somewhere? I found the one in the wiki, but it is somewhat confusing... 3) Is there a way to use multiple sound devices in one ChucK VM? I'm using chuck 1.2.1.3 on Linux-ALSA. It seems I have to specify the dac on the command line (--dacX). This could probably be used to start one VM per soundcard and exchange audio data via netout/netin. I will try this soon. However just out of curiosity, is multiple-dac support in one VM anticipated some time in the future? 4) regarding netout/netin. This may also be useful for integration with other applications like Pure Data. Does anyone have experience with it or details about the protocol if there is any? If not I will have a look at it as soon as I need it and write a Pure Data external if necessary. 5) I read about an Un-Chuck operator (=<). However it appears nowhere in the current docs. Is it still supported, or temporarily disabled? 6) In the "Developer Guide" I read something about OpenGL support. This was the only mention of OpenGL support I came across. I suppose if this really exists, it is a new development feature since v1.2.1.3 does not appear to posses any (undocumented) OpenGL API. Best regards, Robin Haberkorn

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Reading sample's value
by Matt Bard 31 Mar '12

31 Mar '12

ChucK users, Is there a way that I can read individual sample's values? Does ChucK have some method of giving me those as floats/ints? I'd like to monitor each sample's current value to create a Schmitt Trigger, for example. Thanks,Matt

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utility code for sending MIDI messages
by Michael Heuer 19 Mar '12

19 Mar '12

Hello ChucKers, Does anyone have utility code for sending MIDI messages? I've done plenty with MidiIn and OscIn/Out before but have just started working on something to send MIDI to an instrument. I don't really want to have to do setting of MIDI status bytes and such myself. michael

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Spring Equinox Performance and ChucK Program
by Lester Hall 19 Mar '12

19 Mar '12

Hellooooo there ChecKists! I remember the date when I first met my buddy ChucK: October 13, 2007. That was also the day that I found electro-music.com, where the ChucK forum resides. I was a very bitter, angry, broken person back then and in the past four and a half years I have all but totally healed from that nightmare to become the very happy and satisfied person that I am today. It was the mighty power of ChucK and the electro-music community that were the most significant influences, well second to my walk with God but nothing tops that, which were responsible for that amazing transformation. Fast forward to this past Saturday and we had our Spring Equinox event, an annual celebration of music and friendship and good times. I wasn't sure what do do musically and I ended up creating a pretty good ambient synthesizer program if I do say so myself. At the last minute my friend Shane Morris prompted me to say a final message to close out the show as I was the last performer. Wondering if my faulty mic would hold up, I ended up talking the whole way through about personal stuff that everyone knows about but needs to be said once in a while. I talked about the ocean, the universe, eternity, and stuff like that as well. It turned out to be a very satisfying performance after all. If you would like to hear this performance (45 * 60 :: second => now; // duration of recording), please see this thread: http://electro-music.com/forum/viewtopic.php?t=52293&start=50 and scroll down to the entry by "Inventor", which is my electro-music nickname. There you will also find ChucK source code for the ambient program that I ran as well as the corresponding OSCulator config file for setup of two WiiMotes (optional but highly recommended). I hope that some of you enjoy my work and get a laugh or two and maybe even a tear in your eye as I did from the whole thing. Thanks to all who have contributed to ChucK over the years, you really did make a difference in at least one guy's life. Les Hall (Inventor)

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what have I stumbled upon this time?
by Michael Heuer 15 Mar '12

15 Mar '12

Hello ChucKers, Has anyone ever seen the value of a method parameter change based on the value of some other method parameter? The following class, when run after the LiCK library has been loaded, public class MethodNameBug { fun void methodName(int intValue) { <<<"methodName(int)",intValue>>>; } fun void methodName(float floatValue) { <<<"methodName(float)",floatValue>>>; } fun void methodName(int intValue, dur duration, Interpolation interpolation) { <<<"methodName(int, dur, Interpolation)",intValue,duration,interpolation>>>; } } MethodNameBug bug; bug.methodName(60); bug.methodName(2.0); CubicIn cubicIn; bug.methodName(60, 1::minute, cubicIn); 2::second => now; results in "LiCK imported." : (string) [chuck](VM): sporking incoming shred: 1 (MethodNameBug.ck)... methodName(int) 60 methodName(float) 2.000000 methodName(int, dur, Interpolation) 1078853632 2646000.000000 0x4eef80 Somehow the int value 60 passed in as intValue parameter is interpreted as 1078853632 in the methodName(int, dur, Interpolation) method call. Now here's where it gets odd. CubicIn is a LiCK class that extends from Interpolation, and Interpolation extends FloatFunction, all short functor-style classes CubicIn.ck: public class CubicIn extends Interpolation { fun float evaluate(float value) { return Math.pow(value, 3.0); } } Interpolation.ck: public class Interpolation extends FloatFunction { // empty } FloatFunction.ck: public class FloatFunction { 0.0 => float default; fun float evaluate(float value) { return default; } } If instead I instantiate and pass an interpolation instead Interpolation interpolation; bug.methodName(60, 1::minute, interpolation); it works. "LiCK imported." : (string) [chuck](VM): sporking incoming shred: 1 (MethodNameBug.ck)... methodName(int) 60 methodName(float) 2.000000 methodName(int, dur, Interpolation) 60 2646000.000000 0x69dfe0 Changing the method signature to accept an Object, or a string, or another primitive value also works. Object object; bug.methodName(60, 1::minute, object); methodName(int, dur, object) 60 2646000.000000 0x110b830 bug.methodName(60, 1::minute, "message"); methodName(int, dur, string) 60 2646000.000000 message bug.methodName(60, 1::minute, 42); methodName(int, dur, int) 60 2646000.000000 42 I have a special set of swear words reserved for ChucK, and I'm afraid I've use them all up by this point. Any ideas? michael

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Ambient space music program
by Lester Hall 14 Mar '12

14 Mar '12

Hello, please see this forum entry: http://electro-music.com/forum/viewtopic.php?p=356337#356337 for an OSCulator / WiiMote controlled space music program called Ambient 3. It plays without OSCulator and the two WiiMotes, but is way better with them. I included the OSCulator config file for your convenience. Our expert on ambient, Shane Morris, gave it high praise. It uses IFFT and pitch shifting and stuff like that. I'm going to do a 1/2 hour performance with it to close out the Spring Equinox show this weekend (tune in to electro-music radio). Enjoy. Les (Inventor)

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netin and netout
by David Ogborn 14 Mar '12

14 Mar '12

Hi all, Does anyone know what the story is with the netin/netout opcodes? A search of the list over the last couple of years shows that this question has come up several times without much of an answer. A quick peak at the 1.2.1.3 Chuck source code reveals a commented out line about "net". A Google search shows a file that used to be in the code but apparently isn't now ulib_net.cpp, which has code for the netin/netout opcodes. It looks like it was taken out. Does anyone know why? (Corollary: Does anyone know why it should not be put back in?) Yours truly, David ------------------------------------------------------------------- Dr. David Ogborn, Assistant Professor Communication Studies & Multimedia Director, Cybernetic Orchestra & ESP Studio McMaster University, Hamilton, Canada ogbornd --at-- mcmaster.ca http://davidogborn.net http://twitter.com/ogbornd http://esp.mcmaster.ca (Cybernetic Orchestra) 1-905-525-9140 ext 27603

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SBBD show
by Hans Aberg 09 Mar '12

09 Mar '12

FYI, a fun show. Might work well with a ChucK adaptation and a couple of laptops. Hans https://www.youtube.com/watch?v=W_6SfMZxoLc

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include/import (am noob)
by George Locke 05 Mar '12

05 Mar '12

Hi, I want to make a library of functions that I can call from any chuck script. If I put those functions in one file, how do I access them from another? It would be great if I could make them into a new namespace, akin to Std.X or Math.X (I am using miniAudicle 0.2.0, not command line.) (I checked the language specification for the words "include" and "import" and found nothing relevant.) Thanks, George (I am new to chuck, but not to computer programming, nor computer audio.) PS is there a popular/built-in solution for making exponentially distributed, normally distributed, etc random variables? PPS If not, I'd be happy to share my work - is there a common way for people to share code like this?

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Re: [chuck-users] serial communication and chuck
by N. Cameron Britt 05 Mar '12

05 Mar '12

YES! Chuck NEEDS serial. Of course it's true that all of this can be accomplished using some other application and OSC, but it's cumbersome and lame to have to use another application *only* to get access to serial. I've had to do this for several projects, including one I'm working on now. HIDUINO seems like a promising alternative for Arduino stuff, but I wasn't able to get it working right, so I gave up on it. Maybe others have had luck with that? Cameron

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public class connections mystery
by David Ogborn 05 Mar '12

05 Mar '12

Hello again Chuckists, This is the second time today that I harangue the list with a question about some unexpected behaviour from code (unexpected to me, anyways!). This one is a bit more complicated… I declare a public class that maintains a static array of oscillators and envelopes (through a helper class). A function in the public class creates a new oscillator and envelope, and connects them both to the dac. Another function in the public class makes the envelope "go". Now here's the funny thing, to my mind: (1) If I call the creation function and the "go" function from the same (second) shred, everything works. (2) If I call the creation function in one shred and the "go" function in another shred, there is no sound - and a little investigation seems to reveal that the ugens all exist and are accessible, but are no longer connected to each other. (3) If I call a special "connect" function - _from any shred_ - that simply reestablishes the connections, then the "go" function works when called _from any shred. Here is an example of "calling shreds" and below that is the public class code: // one possible shred… Cells.sinOsc("low",28); // I want this to work from a separate shred but there is no sound/connections Cells.ad("low",5::ms,5::ms); // However, the above starts to work again if this is called from any shred Cells.connect("low"); // public class code in a separate file and shred class Cell { Osc o; Envelope e; } public class Cells { static Cell @cells[]; function static void sinOsc(string name, float nn) { Cell c; new SinOsc @=> c.o; nn => Std.mtof => c.o.freq; new Envelope @=> c.e; c.o => c.e => dac; c @=> cells[name]; } function static void ad(string name, dur att,dur dec) { cells[name] @=> Cell c; 1 => c.e.target; att => c.e.duration => now; 0 => c.e.target; dec => c.e.duration => now; } // the function below shouldn't be necessary, I don't think // but it is… unless connect is called on a given cell from // a shred other than the shred that calls sinOsc, the // ugens are not connected to the dac! ??? function static void connect(string name) { cells[name] @=> Cell c; c.o => c.e => dac; } function static void note(string name, float nn) { nn => Std.mtof => cells[name].o.freq; } } Cell theCells[0] @=> Cells.cells; while(true) { <<< "public class Cells is still alive" >>>; 10::second => now; } // Thanks for any help! // Yours truly, // David ------------------------------------------------------------------- Dr. David Ogborn, Assistant Professor Communication Studies & Multimedia Director, Cybernetic Orchestra & ESP Studio McMaster University, Hamilton, Canada ogbornd --at-- mcmaster.ca http://davidogborn.net http://twitter.com/ogbornd http://esp.mcmaster.ca (Cybernetic Orchestra) 1-905-525-9140 ext 27603

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serial communication and chuck
by Scott Smallwood 04 Mar '12

04 Mar '12

Hey all, I'm wondering if anyone on this list knows whether there are any plans to (finally) implement serial communication in ChucK? I ask because, as someone who has been teaching Arduino-related things, I've basically stopped teaching ChucK in favour of Pd, simply because there isn't any way to get communication happening between ChucK and Arduino except through a third environment (like Processing via OSC or something). I understand that it isn't that difficult to do this via OSC and Processing (or java or whatever), but it introduces an unfortunate stumbling block for beginners, and I find that it is just easier to teach in an environment that has native serial communication abilities (like Pd, Supercollider, etc). But really, I'd MUCH rather teach ChucK, as I find that it is such a good teaching language and has so many out-of-the-box features thanks to the native implementation of percolate... I posed this question a couple of years ago and it seemed like there was lots of interest in making this happen, but as far as I know, nobody has stepped up. Any thoughts? --ss [ - ] - [ - ] - [ - ] - [ - ] - [ - ] - [ - ] - [ - ] - [ - ] - [ - ] S c o t t S m a l l w o o d composer, sound artist faculty of arts, u of alberta scott.smallwood(a)ualberta.ca http://www.scott-smallwood.com http://www.ecnedive.com

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The iLes Project
by Lester Hall 04 Mar '12

04 Mar '12

Hello ChucKists! I have been away from the list for a while and I am back now with a new project. Basically I am doing motion control of music for exercise and weight loss purposes, plus also for performance art. A friend has provided many samples of things like drums, robots, light sabres, thunder, etc. and I am also using the ChucK instruments in addition to the samples. The idea is that for a music programming geek like me, it will be a fun adventure to develop software and hardware combinations that permit me to dance my way to a better state of physical fitness. So far I have been working on gestures recognized from the (x,y) inputs of my Gyration Air Mouse, and soon I will get an iPod Touch for this purpose as well. Then I will have a sensor for each hand / arm, both of which interface with ChucK, plus the iPod Touch can be used in a standalone mode using the right apps. So far my best program is the flute and I have added frequency scale and time quantization at my friend's suggestion which really helps it sound good. I am also creating a music album for release on the EdP netlabel and video blogging my progress on electro-music.com, the home of the ChucK forum. If you have any questions or suggestions, I welcome them - and have a great day! Les

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Jam On It: ChucK-based low latency jamming system
by Lester Hall 02 Mar '12

02 Mar '12

Hi ChucKists, Please see this forum thread: http://electro-music.com/forum/viewtopic.php?p=355340#355340 for an introduction and initial release of a quickly coded little jamming system based on MIDI over OSC. I tested it last night and it worked on localhost. Tomorrow (Saturday 3-3-12) we will have a jam session on radio.electro-music.com and you are invited to join up and be part of the fun! I will be coding more features such as more instruments / players, etc. today and we'll begin jamming sometime on Saturday morning, USA time. Please join the electro-music.com chatroom to coordinate with the rest of us. Les

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Most recent Chuck for Lion?
by Charles Turner 28 Feb '12

28 Feb '12

Hi all- Finally got back to Chuck and Lion, but I wonder if I have the most recent version? > etla:/usr/local/src/chuck-1.2.1.3/examples$ chuck --version > > chuck version: 1.2.1.4-beta-1 (dracula) > exe target: mac os x : universal binary > http://chuck.cs.princeton.edu/ > > etla:/usr/local/src/chuck-1.2.1.3/examples$ chuck status.ck > [chuck](VM): status (now == 0h0m0s, 0.0 samps) ... > [shred id]: 1 [source]: status.ck [spork time]: 0.00s ago [Chuck hangs here…] > ^C[chuck]: cleaning up... > > RtApiCore::closeStream(): no open stream to close! > > etla:/usr/local/src/chuck-1.2.1.3/examples$ Where's the most recent version located? Thanks, Charles

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