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chuck killed when swapping buffer reference
by Charlls Quarra 14 Feb '06

14 Feb '06

This program kills chuck 1.2.0.4 after u>30, when curbuf and nextbuf references are swapped. There is something blatantly wrong with this code? // the patch sndbuf buf => dac; sndbuf buf2 => dac; sndbuf @ curbuf; sndbuf @ nextbuf; 2 => buf.interp; 2 => buf2.interp; // load the file "/home/charles/test.wav" => buf.read; "/home/charles/test.wav" => buf2.read; // set the playback rate (1.0 is default) 1.0 => buf.play; 1.0 => buf2.play; buf @=> curbuf; buf2 @=> nextbuf; 0 =>int u; buf.samples() => int size; std.rand2(0, size) =>int nextpos; 100::ms => dur stepping; nextpos => nextbuf.pos; 0.0 => float mixer; 1.0 => curbuf.gain; 0.0 => nextbuf.gain; // time loop sndbuf @ swap; while( true ) { 1 +=> u; if ( u>30 ) { 5::ms => stepping; 0.05 +=> mixer; 1.0 - mixer => curbuf.gain; mixer => nextbuf.gain; if ( mixer > 0.95 ) { std.rand2(0 , size) => nextpos; curbuf => swap; nextbuf => curbuf; swap => nextbuf; nextpos => nextbuf.pos; 0.0 => mixer; 0 => u; 100::ms => stepping; } } stepping => now; } --------------------------------- 1GB gratis, Antivirus y Antispam Correo Yahoo!, el mejor correo web del mundo Abrí tu cuenta aquí

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Is this possible?
by Mike McGonagle 13 Feb '06

13 Feb '06

Hello all, As ChucK is intended to be an "on the fly" tool for sound generation, I was wondering if it would be possible if the compiler could detect infinite loops that DO NOT advance time. I am thinking about this more from a practical stand point that when some new code is being added to ChucK, if a loop is entered that does not advance time, nor yeild control to another thread, it will SEIZE the machine, with the only recourse is rebooting. While this is practical, I know that it would be one of those feature requests that would be low priority. I only make the recommendation because over the weekend, I was playing with ChucK and ran accross this very problem. I would think that in performance, it would not really be practical to have to reboot. At the same time, I wonder how many performances would rely on entering raw code, instead of loading files. Thanks, Mike

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sndbuf.ck not doing any sound
by Charlls Quarra 13 Feb '06

13 Feb '06

Hi, apparently there is some sort of problem with sndbuf in 1.2.0.4, the sndbuf.ck works ok with some .aif generated with stk, but a .wav generated from ardour won't produce any sound. the .wav information is ======= WAVE Format ======= Format Tag: 3 (0x3) Channels: 1 Samplerate: 48000 avg byte/sec: 192000 Block align: 4 bits/sample: 32 cbSize: 0 This is compiled with makefile.jack, which apparently by defaults links against any libsndfile present in the system, indeed chuck is linked against it; $ ldd /usr/bin/chuck linux-gate.so.1 => (0xffffe000) libasound.so.2 => /usr/lib/libasound.so.2 (0xb7e45000) libjack.so.0 => /usr/lib/libjack.so.0 (0xb7e3a000) libstdc++.so.5 => /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.5-20050130/libstdc++.so.5 (0xb7d80000) libdl.so.2 => /lib/libdl.so.2 (0xb7d7c000) libm.so.6 => /lib/libm.so.6 (0xb7d59000) libsndfile.so.1 => /usr/lib/libsndfile.so.1 (0xb7d08000) libc.so.6 => /lib/libc.so.6 (0xb7bf0000) libpthread.so.0 => /lib/libpthread.so.0 (0xb7b9e000) libgcc_s.so.1 => /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.5-20050130/libgcc_s.so.1 (0xb7b96000) /lib/ld-linux.so.2 (0xb7f08000) --------------------------------- 1GB gratis, Antivirus y Antispam Correo Yahoo!, el mejor correo web del mundo Abrí tu cuenta aquí

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multi-channel dac/adc?
by Charlls Quarra 10 Feb '06

10 Feb '06

Hi, I wonder if it is possible to manage input and output of audio hardware with more than 2 channels, this relates to a secondary doubt it's tickling me; why there seems to be a embedded version of stk inside chuck source, instead of relying on stk as a external dependency? Currently stk 4.2.1 supports any number of audio I/O channels, it's possible to easily update chuck to support the new stk? or even cleaner, move stk as a external dependency? p.d: for gentooers, there are now two (preliminary, they work on my x86 box tho) ebuilds for stk and chuck; http://bugs.gentoo.org/show_bug.cgi?id=122321 http://bugs.gentoo.org/show_bug.cgi?id=122332 just put them in a sensible overlay path (i use /usr/local/portage-audio/media-libs/stk and /usr/local/portage-audio/media-sound/chuck) --------------------------------- 1GB gratis, Antivirus y Antispam Correo Yahoo!, el mejor correo web del mundo Abrí tu cuenta aquí

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example use of Modulate Ugen
by Graham Coleman 09 Feb '06

09 Feb '06

ChucK rockers, Hi list! I'm Graham. I like ChucK. Can someone give a working example of the Modulate Ugen? I hooked it up in the output of an STK instrument, but got no noise. Is it something you must poll for values, perhaps? Here's my unsuccessful try: -- Scale sc; //this is some utility code Wurley w => Modulate m => dac; m.vibratoGain( 0.5 ); m.randomGain( 0.5 ); m.vibratoRate( 1.0 ); int i,j; [0, 1, 2, 4, 5, 1, 2, 4, 3] @=> int mel[]; [1, 1, 3, 2, 1, 1, 2, 1, 1] @=> int dur[]; for (0=>int i; ; i++) { i%mel.cap() => int ind; sc.scaleFreq( mel[ind]+2, sc.mixo, 4, 0 ) => w.freq; w.noteOn( 0.4 ); 250::ms => now; } -- I'm running with the latest audicle and chuck on WinXP. best, Graham

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Feature request
by Mike McGonagle 08 Feb '06

08 Feb '06

Hello Ge, I was wondering if it would be possible to include some method of determining if a function returns 'nan'? In working with fractals, some of the results that I get during a search for a new parameter set may produce a 'nan' value, but there seems to be no way of testing for that condition. As a result of this, several classes of fractals that I am working on don't complete a search because I can't test for this. I was thinking how this might go, and there were basically two forms that could work... // static constant if (result == math.nan) { doSomethingWith(result); } else { reportError(result); } or // a function call if ((result) => math.isNan) { ... Thanks, Mike

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Question on Class and Inheritance
by Mike McGonagle 08 Feb '06

08 Feb '06

/* This one was a doozey... it took me about 2 hours to figure out this one, as I had rewritten some code, not thinking this could be the trouble... Anyway, it would appear Chuck doesn't differentiate between floats and arrays of floats when finding the proper function to call. I would think that this code would produce an output with a call to the B1, but when run, it actually calls the E1. Does ChucK treat floats and arrays of float the same when making this function determination? Well, yes it does, but should it? I would think, that if object oriented is a goal, then floats and arrays of floats would be treated differently. */ class B1 { fun void f(float f[]) { <<< "in B1.f", "" >>>; } } class E1 extends B1 { fun void f(float x, float y, float z) { <<< "in E1.f", "" >>>; } } class B2 { fun void f(float x, float y, float z) { <<< "in B2.f", "" >>>; } } class E2 extends B2 { fun void f(float f[]) { <<< "in E2.f", "" >>>; } } B1 b1; B2 b2; E1 e1; E2 e2; [ 0.1, 0.3, 0.7 ] @=> float myArray[]; b1.f(myArray); // in B1.f - correct e1.f(myArray); // in E1.f - wrong - should this actually call B1.f(myArray) e1.f(0.7, .553, 77); // in E1.f - correct b2.f(0.7, .553, 77); // in B2.f - correct e2.f(0.7, .553, 77); // in E2.f - wrong - should this actually call B2.f(0.7, .553, 77) e2.f(myArray); // in E2.f - correct //******* The following Java program illustrates what I was thinking should happen. Will ChucK follow what Java is doing? class Base1 { public String f(double x[]) { return "Base1"; } } class Ext1 extends Base1 { public String f(double x, double y) { return "Ext1"; } } class Base2 { public String f(double x, double y) { return "Base2"; } } class Ext2 extends Base2 { public String f(double x[]) { return "Ext2"; } } public class doit { public static void main(String[] args) { Base1 b1 = new Base1(); Ext1 e1 = new Ext1(); Base2 b2 = new Base2(); Ext2 e2 = new Ext2(); double myArray[] = { 0.7, .533, 75 }; System.out.println("b1: " + b1.f(myArray)); // b1: Base1 System.out.println("e1: " + e1.f(myArray)); // e1: Base1 System.out.println("e1: " + e1.f(0, 1)); // e1: Ext1 System.out.println("b2: " + b2.f(0, 1)); // b2: Base2 System.out.println("e2: " + e2.f(0, 1)); // e2: Base2 System.out.println("e2: " + e2.f(myArray)); // e2: Ext2 } } Thanks, Mike

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Question regarding Sample level timing.
by Mike McGonagle 06 Feb '06

06 Feb '06

Hello all, I wrote this test this morning, and something seems amiss here with timing. Or am I understanding this wrong? /* The following code doesn't seem to work properly, as there appears to be a 2 sample delay from when the impulse is triggered from what is expected. as the 'doit' function is started at time 0.0, I would think that each and every impulse would be generated at 100::ms intervals, starting at 0.0, and not 2.0 The code generates the output below... */ impulse i => blackhole; fun void doit() { while(true) { 1.0 => i.next; 100::ms => now; } } now + 1::second => time later; spork ~ doit(); while(now < later) { i.last() => float val; if (val != 0.0) { <<< now, i.last() >>>; } 1::samp => now; } /* 2.000000 1.000000 4412.000000 1.000000 8822.000000 1.000000 13232.000000 1.000000 17642.000000 1.000000 22052.000000 1.000000 26462.000000 1.000000 30872.000000 1.000000 35282.000000 1.000000 39692.000000 1.000000 */ Thanks, Mike

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Release schedule for 1.2.0.5
by Mike McGonagle 06 Feb '06

06 Feb '06

Hello Ge, Thanks for looking into the impulse bug so quickly. I was wondering if the development team has a regular schedule under which you are working? I was just curious at how often there will be updated releases for ChucK are being made. Thanks, Mike

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redirecting console output
by eduard 28 Jan '06

28 Jan '06

Hello all, Is there a way to redirect the std output to a text file? I'd like to use chuck to annotate songs, i.e. when I hear a kick a press a midi keyboard and I tell chuck to output the elapsed time to the console. I'd like to write this output to a text file, but I haven't succeed. Could some one give me a hint? and if that hint is unix or c/c++ it'd be better. thanks in advance, Eduard

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sndbuf questions, etc.
by eric.forte＠verizon.net 27 Jan '06

27 Jan '06

Hi all. Is there a way to make a table lookup oscillator with ChucK? I'm trying to load in soundfiles to be used as waveforms so that I can index them directly. I've worked through allocating an array and loading it with the samples of a file, but there doesn't seem to be a way that you can actually put them out to the dac again. Then I tried to do some other tests where I just read the file into an array outside of a function (since that seemed a bit more chuckian), then sporked a bunch of shreds, but it seems that when you change the position of the buffer from inside a function, it seems to affect the position in the other shreds. The last test I did, I had the file read in inside of the function and that seemed to work well, but quickly seemed to slow everything down. Any input is appreciated. Regards, Eric

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Re: [chuck-users] winxp ChucK setup
by Julian Sorrel 25 Jan '06

25 Jan '06

My system path reads as: %SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;C:\Program Files\ATI Technologies\ATI Control Panel;C:\Program Files\QuickTime\QTSystem\ This includes %\System32, so Chuck should be in the system path, I believe. My Chuck folder with bin, examples, and doc are all located in D:\Chuck. I use the start -> run -> cmd shell. When I enter "chuck --help" it loads all the chuck info, so I believe it's running fine. When I prompt to D:\Chuck\examples and enter "chuck otf_07.ck" or "chuck otf_07" though, it gives me "[otf_07(or.ck)]: no such file or directory." This happens when I attempt to load any file in this way. All the example files register in "Dir D:\Chuck\examples", so I'm stumped. Thanks for your help, Julian Ge Wang <gewang(a)CS.Princeton.EDU> wrote: Hi Julian! Welcome to chuck-users! > I'm just trying out ChucK for the first time, and I'm not able to get > chuck to load a file. If I prompt to D:\Chuck\examples\, theoretically > I should be able to enter "chuck otf_01.ck" and have it launch, right? That's correct. What are steps you took to do this? - which shell are you using? via start->run... then 'cmd'? - what error message are you seeing? > I'm running Windows XP, and using the win32.exe ChucK (which I put in > System32). That's correct also. This should put chuck into your system path. After which you should be able to invoke chuck from any directory, using the command line interface. It may be that chuck.exe is still not in your PATH, it is inconceivable that c:\windows\system32\ is not in PATH, but still possible. Can you check which directories are in your path? You can do this right click on my computer (I think) and select properties, and under one of the tabs should be the default path - all the directories listed will be searched when invoking a program globally. Let's get this resolved! Let me know how things go. Ge! > I'm just trying out ChucK for the first time, and I'm not able to get > chuck to load a file. If I prompt to D:\Chuck\examples\, theoretically > I should be able to enter "chuck otf_01.ck" and have it launch, right? That's correct. What are steps you took to do this? %SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;C:\Program Files\ATI Technologies\ATI Control Panel;C:\Program Files\QuickTime\QTSystem\ Note: forwarded message attached. --------------------------------- Do you Yahoo!? With a free 1 GB, there's more in store with Yahoo! Mail.

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A Bug? or is it a Feature?
by Mike McGonagle 24 Jan '06

24 Jan '06

Hello all, I was playing with some ChucK code that I wrote, and in copying some of the code to another file, I inadvertantly copied a global variable definition so that it was after a function that referenced that global variable. When I ran the code, I didn't get a message from ChucK that the variable was not defined when the code was compiled, and when the program ran, it would hang at the location where the global was referenced. (I don't have access at the moment to a running "ChucK", so I can only give an simple example.) fun void mySporkedFunction(float p1, float p2) { <<< p1, p2 >>>; globalVariable * 2 => float myLocalVariable; // do some sort of time function here } // define the global here 10.0 => float globalVariable; spork ~ mySporkedFunction(0.0, 1.0); When I ran my actual code, Chuck would hang up at the point where the globalVariable was referenced, in this example, that would be the second line off mySporkedFunction. The previous "print" statement would not output anything, until I hit Control-C to stop everything. Needless to say, I moved the global defintion to before the function, but I would think that there should be some sort of error message generated, or this should work as expected. Thanks, Mike

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Question about Networking
by Mike McGonagle 23 Jan '06

23 Jan '06

I was working on some code in ChucK, and was thinking that it would be nice to be able to use an interface that I already have created using Pure Data. But, in order to do this, there would have to be something available that would be similar to either a MIDI event, or the like. Am I correct in understand that the "netin" and "netout" Unit Generators are specifically for transfering audio over the network? Are there any plans to create such an Event class? I would think something like this couldn't be written in ChucK, as there would need to be some sort of networking primitive to handle the connections and data transfer. How does Audicle connect up to ChucK? Is that purely through a commandline, with Audicle sending other commandline messages to a running "ChucK"? Thanks, Mike -- Help the Environment, Plant a Bush back in Texas!

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about "dac/adc" to control input/out??
by Lewis Liu 23 Jan '06

23 Jan '06

Dear Sir, In my PC, there are two audio interface. One is the default in motehr board (SoundMax). Another is USB dungo. I can use --dacx and --adcx to force the audio input and ouput in SoundMax. But I can not use --dacx or --adcx to force the input in USB dungo. I do not know what is wrong. The codes are as follows: adc => gain g => blackhole; float x; while( true ) { g.last() => x; if( std.fabs(x) >= .05 ){ <<< x, "hello" >>>; } 1::samp => now; } Best Regards Lewis

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Re: Is there any "Community" repositories yet?
by Jim Hinds 21 Jan '06

21 Jan '06

I have re-posted the stereoChord EGG routine back up on the wiki. I now know that there is a system malfunction that prevents the text from showing: I thought it was my breath. Jim Hinds Chuck Rules, But the Wiki fools! On Jan 21, 2006, at 7:02 AM, Mike McGonagle penned: > > From: Mike McGonagle <mjmogo(a)gmail.com> > Date: January 20, 2006 9:32:06 AM HST > To: ChucK Users Mailing List <chuck-users(a)lists.cs.princeton.edu> > Subject: Re: [chuck-users] Is there any "Community" repositories yet? > Reply-To: ChucK Users Mailing List <chuck- > users(a)lists.cs.princeton.edu> > > > On 1/19/06, Adam Tindale <adamtindale(a)hotmail.com> wrote: >> You should post them on the WIKI in the ChucK Progams section. > > And when I get to the upload page, it says that it is disabled. > >> http://wiki.cs.princeton.edu/index.php/ChucK_Programs >> >> There are other examples of ChucK programs there. We are probably >> going to clean this up a bit. I have been doing a bit of work to make >> the WIKI a bit more useful and clean. I am certainly interested in >> your patches and hopefully they will give the wiki a bit more traffic >> so we can all post our stuff there. > > I don't think it is a "probably", it has to be fixed, as the things > that are posted there are nothing but gibberish. It looks like this is > one of the few "forums" (for lack of a better name) that is being > hosted by this WIKI, so it might be that there is little resources for > the administration of the software. Are there any restrictions as to > who can access and update things? I would be more than happy to help > out in getting some things fixed and additional things added. Do they > have a policy about non-students getting access? > > Thanks, > > Mike >> .... lots of really immportant stuff deleted ...

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Is there any "Community" repositories yet?
by Mike McGonagle 20 Jan '06

20 Jan '06

Hello all, I spent this last weekend working on a piece using ChucK, and quite frankly, it was something that I had implemented using PD, but was never really able to get one part to work successfully (probably more due to a design flaw or something). But, I was very happy to say that, using ChucK, I not only got the basic parts to work, but I also got the part that I was having trouble with in PD. I am very impressed with ChucK. So, basically, I would like to start posting some of these things to get some feedback from others, as well as some critiques of both the programming as well as the resulting music/sound construction. Is there a part of the WIKI that can be accessed by regular users to post some things? Or should I just post something to the list here (as an attachment)? Thanks, Mike

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byte ordering and sndbuf
by Robert Edge 19 Jan '06

19 Jan '06

hey there, just getting started playing with chuck. I downloaded ChuckJoy.zip from the developers list and noticed that sndbuf was (not)byte-swapping the .raw files. converting the samples to little-endian solved the problem. .wav and .aiff files work fine, I was just wondering if this is what is supposed to be happening, as all the rawwaves that come with STK are saved in the same format. using chuck 1.2.0.4 on Fedora Core 3, amd x86_64 __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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winxp ChucK setup
by Julian Sorrel 18 Jan '06

18 Jan '06

I'm just trying out ChucK for the first time, and I'm not able to get chuck to load a file. If I prompt to D:\Chuck\examples\, theoretically I should be able to enter "chuck otf_01.ck" and have it launch, right? I'm running Windows XP, and using the win32.exe ChucK (which I put in System32). I'd appreciate any help. Thanks, Newb. --------------------------------- Yahoo! Photos Got holiday prints? See all the ways to get quality prints in your hands ASAP.

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standard library documentation updated
by Ge Wang 17 Jan '06

17 Jan '06

Greetings, We have updated the online documentation for the standard libraries, finally adding descriptions to many functions: http://chuck.cs.princeton.edu/doc/program/stdlib.html The changes will also be reflected in the next version of the ChucK manual (pdf). All items on this guide should be present, with the exception of math.pi, math.twopi, and math.e. Please let us know if you find any problems. Best, Ge!

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Question about Gain and instantiating objects
by Mike McGonagle 16 Jan '06

16 Jan '06

Hello All, I have created an object that basically is a simple sine wave grain to be used to create a "cloud" of sound. What I would like to do is to instatiate MANY of these objects, each of which would "exist" for maybe 10 milliseconds, or thereabouts. I was hoping to do this, as I am not really sure exactly how many instances will be needed at a given time. So, I got the object created (in the file 'sinegrain.ck'), and I call its function, sporking it into its own thread. When I create a single object, everything seems to work fine, but when I do more than one, everything goes haywire. I have attached an archive with all the files I use, and you can run them with the following... > chuck sinegrain sgtest1 rec-auto > chuck sinegrain sgtest2 rec-auto > chuck sinegrain sgtest3 rec-auto > chuck sinegrain sgtest4 rec-auto Each of the test files (sgtest...) creates the number of objects that is indicated by the number in the file name. When you run this, you will need to hit control-c to stop everything. The object will produce a print out with the gain of each generator, and once it is finished, it will print "done". You can hit control-c after that... I did this in Pure Data, but I had to create it in such a way that there were already all the generators instantiated, so if there ever occured a moment where one more generator was needed that created, it would "steal" a generator. This occasionally produced some clicks in the resulting sound. Will I need to create an "array" of my objects, creating all the instances that I may need? Or should I be able to create an object, call its function, and call its function by sporking it, and then instatiate a new object using the same object reference? I hope this makes sense, I didn't get much sleep last night, and my brain hurts... Mike

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how to know the input energy??
by Lewis Liu 11 Jan '06

11 Jan '06

Dear Sir, How to get the value of input energy?? Thanks. Lewis

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Math Status
by Mike McGonagle 10 Jan '06

10 Jan '06

I was trying to use the math.pi() and math.twopi() methods, and ChucK complains that these are not members of the library. What is the status of the math library? How complete is it? Thanks, Mike

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Question about Arrays
by Mike McGonagle 09 Jan '06

09 Jan '06

Hello All, I was wondering how I could, once an array has been defined and given a size, how can I recreate this array with a new size as an empty array. Basically, what I am trying to do is to take one array and temporarily store it in another array for later recall. I am creating an object that will extend another, but I want this functionality to reside in the parent object, and the subclasses may have different sizes for these arrays. ******************************* public class BaseClass { float myArray[]; float myStoreArray[]; fun void backUpArray() { myStoreArray[myArray.cap()]; // this is the line in question for (0 => int i; i < myArray.cap(); i++) { myArray[i] => myStoreArray[i]; } } } public class SubClass extends BaseClass { fun void assignMyArray(float a, float b, float c, float d) { [a, b, c, d] @=> myArray; } } public class SubClass2 extends BaseClass { fun void assignMyArray(float x, float y, float z) { [x, y, z] @=> myArray; } } SubClass sub1; SubClass2 sub2; sub1(0.4, 0.6, 1.5, 2.6); sub2(37.2, 23.4, 53.2); sub1.backUpArray(); sub2.backUpArray(); ******************************* I hope this makes sense. Thanks, Mike

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Envelope
by michael breitenbach 09 Jan '06

09 Jan '06

hi, the Envelope UGen has no last() methode ... (instead value() does the same i think) micha

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