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Porting Chuck on iPhone
by Ganesh Pisal 24 Dec '08

24 Dec '08

Hi, I have source code of Chuck. I want to port the code for iPhone platform. 1. How can I do same? 2. Is there any makefile available for iPhone platform? 3. Can I change makefile of Mac platform to work on iPhone platform? 4. Is there any sample iPhone application which uses Chuck? Regards, Ganesh Pisal Vavni Inc

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Horrble noise bug?
by Les Hall 22 Dec '08

22 Dec '08

Hi folks, I'm working with some guitarists who are using my Guitar Zero practice program, and one of them reports the following problem: Hi Inventor I just tried the new version and the letters work perfectly on the start screen. Congratulations! ;D However, when I tested it I didn't actually connect the microphone, just checked the select game screen and [b]every time[/b] after I close miniAudicle my computer speakers + headphones just make a horrible buzzing noise and I have to restart the PC. Any ideas? A Is this a known bug? The user is running Windows XP. Any help or ideas would be appreciated, thanks. Les (Inventor)

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LiSa.track() and .rampDown() (BUG)
by Kassen 22 Dec '08

22 Dec '08

Fellow ChucKists, Dear Dan. It seems like LiSa is ignoring .rampDown() while in .track(1) mode and .rampUp() becomes equivalent to .play(1). Consider the following example, this should generate a tone that fades in over the course of a second, then fades out. Instead we get a extended test-tone and no fades at all; //-------------8<-------------------- //boring test-tone recording SawOsc s => LiSa l => dac; second => l.duration; 1=> l.record; l.duration() => now; 0=> l.record; s=<l; //boring tracking signal Phasor p => l; second => p.period; 1 => l.track; //issue starts here second => l.rampUp; second => now; second => l.rampDown; hour => now; //-----------8<--------------------------- I believe that this isn't the intended behaviour; for one thing the relevant examples also use .rampDown() in combination with .track(), mysteriously there too the ramps don't work. Likely ramping in combination with track() got broken in a update since these examples were written, that would probably help narrow down the search for the nature of the issue. Then again; this could be a artefact of .track() being intended for single voice usage (I believe this was mentioned) and the ramps being functions of voices? I'll add this to the WiKi once it's been established that this is indeed a bug and not intended behaviour. Yours, Kas.

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Issues when using several inputs on Motu Ultralite/OSX setup
by Stefan Blixt 21 Dec '08

21 Dec '08

I made a thread about this issue here: http://electro-music.com/forum/viewtopic.php?t=31032 . Kassen suggested that I send an email here, thinking that this might require some insight into RTAudio (not sure myself what it is). My Motu Ultralite runs ChucK applications perfectly, as long as I don't bother configuring audio channels, making do with having sound output only coming at the main outputs, and sound input from the MacBook Pro's built-in input or microphone. The problems start when I try to route to other outputs or want to use the Ultralite's inputs. After a bit of trial-and-error, I managed to get ChucK to do what I want to do (more or less) by using this command line to start the program: chuck --adc4 --in8 --out8 test.ck Here's the test code I have been using: adc.chan(6) => dac.chan(0); adc.chan(7) => dac.chan(1); while (true) { 1::day => now; } This will route audio from inputs 7 and 8 to outputs 1 and 2 (not the main outputs - if I want to hear the sound from the ChucK app I need to physically connect the 1 and 2 output to another input on the sound interface). A curious thing here is that if I start like this instead: chuck --adc4 --in8 --out6 test.ck // 6 outputs instead of 8 I get a mangled sound (sounding a bit like a sample rate or bandwidth mismatch - check the sound sample that I attached at the electro-music.comthread), and rather than just coming out of outputs 1 and 2 (as they do when I use the previous command line), the sound appears at all eight analog outputs on the Ultralite (according to the hardware meters on the Motu). If I try --out4 I get sound on outputs 1,2,,5,6,7, and 8. Another thing: if I leave out the output option altogether (i.e. take away "--out8"), I get a mangled sound as before, but only on the main output. I've also seen stuff like getting sound on every second output (1,3,5,7) for some option, though I can't seem to reproduce that now. I think I can work with what happens on my first example, but I'm still a bit curious as to what is going on with these options, and why --out6 causes the sound to behave radically different from --out8. I've checked my drivers - the Ultralite firmware is up to date and I think the OSX drivers are too. I'm running ChucK 1.2.1.2. I might have to leave my Motu for a week, so i might not be able to test stuff right away, if anyone comes up with something. /Stefan -- Release me, insect, or I will destroy the Cosmos!

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December 20th, 2008 :: Apero codelab in Nantes
by emoc * 17 Dec '08

17 Dec '08

Hi Chuckers, If you're interested in having us play audio recordings of your chuck music, drop us a line at apero(a)crealab.info with a link to files we can download, and a second line mentioning the authors and license of the documents that should appear. Supported filetypes and codecs: everything but WMV, WMA, Real and things too proprietary. You can post links here too! All the best emoc ===December 20th, 2008 :: APERO CODELAB 01 in Nantes (Fr)=== * chat, mix & performances * free entrance Saturday December 20th, 2008 from 7:00PM until 11:00PM at the Canotier, 21 quai de Versailles, in Nantes (France) contact : +33 (0)2 40 16 86 78 – info(a)crealab.info L'apéro Codelab 01 is a meeting dedicated to experiments in the audio-visual and musical fields which use programming languages or electronic experimentation, in the spirit of open source. This meeting is organized and moderated by the members of the Crealab network <Apo33 /PiNG / Lolab /la Fabrique du Libre /Ecos>. who take the occasion to invite Emoc, founder of the http://www.codelab.fr forum, a resource in the french-speaking online world on the topic experimental practices. Program * introduction to codelab.fr, short presentation of books such as "Making things talk" by Tom igoe, "Computer Music with examples in SuperCollider 3", "Designing sound" by Andy Farnell) and artworks ("Reflet" by Thomas Otra, "Topodio", by Dominique Leroy & Jean-François Rolez / la fabrique du libre) * Puredata news: the Pdmtl abstractions, Pdpédia is back... * performances by Wilfried Nail, Gary Glitcher * mix of images & sounds from the communauty ! open to anyone ! really ! even if you can't blatter in French...

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I Put A Physics Engine In Chuck
by Zed A. Shaw 15 Dec '08

15 Dec '08

Well, I'm having fun with chuck and plan on using it for a little music like project. In order to make the project work though, I needed a physics engine in chuck, so I put one in there: http://rafb.net/p/SRbR9A13.html That's a sample from my hack in progress. I just put in Box2D_Lite for now to get the idea working, but so far it's pretty nice. Right now all I've got is a Physics UGen that lets you put in an observer and a sound source, and then set their movement. It will then determine the distance and adjust the gain. Next up is pan for left/right of observer, colliding events, and maybe a doppler effect pitch shift based on velocity. -- Zed A. Shaw http://freehackersunion.org/

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Organizing Chuck Projects
by mike clemow 14 Dec '08

14 Dec '08

Hi Chuckers, Just thought I'd plumb the depths of your collective brains (as a procrastination break) to see how you all organize larger coding projects in Chuck. I have a bunch of public classes in files and an init.ck file that Machine.add's them all in the proper order. DIY Chuck class library. It's kind of hackish, though, and I want to write a Chuck session manager application. Is that a dumb idea? How do you all organize your code? Struggling through finals, Mike -- http://michaelclemow.com http://semiotech.org

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Three cheers ( and one small frown) for Dan
by Kassen 13 Dec '08

13 Dec '08

Dear list (and Dan!) LiSa.track() is brilliant! ( See; http://wiki.cs.princeton.edu/index.php/LiSa_examples ). In the past days I've had a renewed enthusiasm for experimenting with LiSa to try to emulate turntable scratches and now turntableist techniques/gestures as well. (You can read reports and see videos excerpts of the relevant sessions here; http://steim.org/jamboree08/ there is a interesting forum starting here; http://forum.itchymuzik.com/index.php ). LiSa.track() seems especially well suited to emulating platter inertia; if I understand it all correctly a simple LPF over the tracking signal will give us most of this "for free". Brilliant stuff, loads of cheap fun with breakbeats. This will be very useful indeed to many people, I imagine. But... unless I'm completely mistaken this was nowhere to be seen in the release notes. I knew it was comming, but I had no idea it was here already. Yours, Kas. PS; //=========================== //"abstract turntableism" by Kas, hacked up in a few minutes //Remixing strongly encouraged //add your own break, tweaking may be needed SndBuf b => LiSa l => Envelope cut => dac; //add your own "break2.wav" => b.read; b.samples()::samp => l.duration; 1 => l.record; l.duration() => now; 0 => l.record; b=<l; Step unity => Envelope e => LPF f => l; //inertia (sort of) 3 => f.freq; unity.next(true); 1 => l.track; 1 => l.play; .125::l.duration() => e.duration; fun void fade() { 1=> int times; while(1) { Std.rand2(2,6) => times; (1.0/times)::e.duration() => cut.duration; repeat (times) { !(cut.value() $ int) => cut.target; cut.duration() => now; } } } spork ~fade(); 1=> int direction; while(1) { -1 *=> direction; (.125 * Std.rand2(direction, 4* direction) + e.target()) % 1 => e.target; e.duration() => now; }

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Dec10 Steim, Amsterdam (NL), presentation
by Kassen 11 Dec '08

11 Dec '08

Dear list, People in The Netherlands may be interested in my presentation at Steim in Amsterdam on December 10 as part of Steim's "Micro jamboree" http://steim.org/jamboree08/ Steim is a organisation that develops, promotes, etc, new interfaces for electronic music. I'll be talking about my sequencer (for writing house using a joystick), about ChucK, my perspectives on improvisation and the use of game devices, illustrating details by improvising some music. There should be space for debate and questions as well. Some of the other sessions may be of interest to people on this list as well. I gather that these sessions are free though reservations are necessary. ( info here; http://steim.org/jamboree08/?page_id=35 ) In case nobody in NL is around it may at least be good to know that STEIM is interested in hearing about ChucK. STEIM is a rather unique institute and I'm very happy the council reversed it's decision and STEIM will continue to get funding; I'm not aware of any other institute that is exclusively dedicated to new interfaces for improvised electronic music. Yours, Kas.

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formatting string
by Beinan Li 09 Dec '08

09 Dec '08

Dear ChucKers, I couldn't find a thorough recipe of ChucK's string in the manual. Could I format a string as I do with sprintf in C or Matlab? If so, how? Thanks. Beinan

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