July 2007 - chuck-users - lists.cs.princeton.edu

09 Aug '07

experiencing that UB version (i don't know why but) works on osx10.3.9 i now understand that chuck is really what i wanted(RT-dsp@command-line) so wanted to go more CUI(VT) oriented and moved to linuxes on other volumes slackintosh was the only one i had to make(linux-alsa) by myself others got there by each apt oriented ways these are maybe cuz i didn't run jackd things before running chuck(is it?) but the result of each chuck moe.ck became as followings chuck on slack is alsa version but i don't know how the bin of debian&ubuntu got compiled (oh unstable is saying something related to jack..) any suggestions? tia slackintosh12.0: [chuck]: (via rtaudio): no devices found for given stream parameters: ... RtApiAlsa: error setting sample rate (48000) on device (hw:Snapper,0): Invalid argument. [chuck]: cannot initialize audio device (try using --silent/-s) debian-ppc-stable: [chuck]: (via rtaudio): no devices found for compiled audio APIs! [chuck]: cannot initialize audio device (try using --silent/-s) debian-ppc-unstable: JACK tmpdir identified as [/dev/shm] [chuck]: (via rtaudio): no devices found for compiled audio APIs! [chuck]: cannot initialize audio device (try using --silent/-s) ubuntu-ppc-7.04: [chuck]: (via rtaudio): no devices found for compiled audio APIs! [chuck]: cannot initialize audio device (try using --silent/-s) -- 2g http://micro.ispretty.com

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NullPointerException
by eduard aylon 07 Aug '07

07 Aug '07

Hi list, I am trying to make a list of objects where each object has references to other objects, but I am not succeeding and I get a NullPointerException. The piece of code below may represent what I am trying to do. class object { Std.rand2f(0., 1.) => float f_; } class Item extends object { 2 => int size_; object item_[size_]; fun void print() { for( 0=>int i; i<size_; i++ ) <<< "item [",i,"]", item_[i].f_>>>; } <<<"----------------------------------------------">>>; <<<"calling print from within class definition">>>; <<<"----------------------------------------------">>>; print(); } 4 => int n; Item l[n]; // no problems up until here <<<"----------------------------------------------">>>; <<<"calling print from outside class definition">>>; <<<"----------------------------------------------">>>; for( 0=>int i; i<n; i++ ) l[i].print(); //offending line After execution I get: [chuck](VM): NullPointerException: shred[id=1:test.ck], PC=[37] Excuse me if it's too obvious, but I can't see why it rises the null pointer exception. Any ideas? thanks in advance, eduard

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About joysticks
by Martin Ahnelöv 31 Jul '07

31 Jul '07

Hello. I feel that I would like to fiddle around a bit with Hid-devices. More precisely those who look like modern console-controllers like Xbox 360's, Playstation 2/3, and Xbox 1's small controller. Is there any gotchas I should know about when both choosing and using these (I have understood that the rumble-feature isn't implemented)? Also, I went to the computer-store today to look for a joystick, but I could only find these third-party ps2/3-controllers. I did find a ps2 to usb-converter, but since I were unsire I though that I should ask here for your experience first. You think it would work? Anyways. I hope I find something more X-box-like, since I'm not too fond of Playstation. Gasten

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Hello and a cool snippet (crash)
by Martin Ahnelöv 22 Jul '07

22 Jul '07

Hello there! I've been playing a little with ChucK for the past few days and I'm really enjoying it. After finally figuring out how to modulate a sinosc's frequency (that one really needs documentation!), I though I were ready for som Hid action. It were actually much easier to set it up than I thought - but still a bit harder than I would like (probably due to the lack of documentation). Well, I successfully miss-used the program and got a couple of different crashes (woo!). I think the following is cool. // Patch SinOsc s => Gain g => dac; SinOsc lfo => blackhole; 1.0 => lfo.freq; 300 => lfo.gain; 0.4 => g.gain; // which mouse 0 => int device; // hid objects Hid hi; HidMsg msg; // try if( !hi.openMouse( device ) ) me.exit(); <<< "mouse '",hi.name(), "' ready...", "" >>>; while(true) { hi => now; while(hi.recv(msg)&&msg.isMouseMotion()) { lfo.last() * (msg.deltaX-msg.deltaY) => s.freq; //rubbie! } } Try changing the msg.deltaX-msg.deltaY to msg.deltaX*msg.deltaY or msg.deltaX/msg.deltaY for the crashes. Bug? This might be Linux-specific. By the way, isn't msg.deltaX and Y pretty inconsistent from the rest of the API? shouldn't it be msg.deltaX()? Well, Thanks for a great tool! Gasten http://hauntedhouse.wordpress.com/2007/07/22/return-of-the-chuck/

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ub but 10.3.9 ?
by 2g 16 Jul '07

16 Jul '07

is chuck ub okay --- maybe not excuse ne got confused the latest bin for osx says it's ub but runs on 13.3.9 ? am on 10.3.9 and about to do something more than chuck -h (but not yet now how to) should i downgrade the version? if yes which one will be the best? i don't have xcode on my iBookG4 -- 2g http://micro.ispretty.com

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Re: [chuck-users] chuck-users Digest, Vol 24, Issue 5
by kijjasak triyanond 13 Jul '07

13 Jul '07

Hi. I'd like to request for a feature. I'd like to be able to read a list of UGens that is chucked from a UGen. Or a list of UGens chucked into a UGen also. That'd be quite useful for programs with dynamic chucking. For example, for checking the order or wether two UGens are connected or not. Thank you ^_^. - kijjaz

2 1

renamed cuz i wanted both alsa and jack version
by 2g 11 Jul '07

11 Jul '07

is that okay? am on Slackintosh11.0 and did both "make linux-alsa" and "make linux-jack" so renamed the jack version "juck" will this bring me any trouble if i really enter the chuck coding world? tia? 2g----- http://micro.ispretty.com -------------------------------------- Easy + Joy + Powerful = Yahoo! Bookmarks x Toolbar http://pr.mail.yahoo.co.jp/toolbar/

2 1

osc guitar
by Joshua Patriquin 10 Jul '07

10 Jul '07

Ge, I am just entering the world of programming and OSC, though I've been a musician for a long time, and am familiar with MIDI. I am assembling a guitar and would like very much to operate a computer using OSC and skipping MIDI altogether (in fact I would consider my project a failure if I must resort to MIDI). Several programs in the subworld of music electric ring out... Csound, yours, supercollider, etc. Why is yours better than the rest? How is it different? Sorry for asking to be sold to, but I am a musician and not a programmer... I want to learn and need a place to start. How should I interface my guitar (from RMC piezo system) with my computer ( A brand new ripping machine) and with you software? Any data you can offer, as a teacher to a young student, would be greatly appreciated. This project, if successful, would mean the realization of a beautiful vision. THanks, Joshua Patriquin

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LOSS Livecode festival, Sheffield UK, 20-22nd July 2007
by alex 04 Jul '07

04 Jul '07

LOSS Livecode - Festival of Audio Visual Livecoding 20-22 July 2007, Sheffield UK http://livecode.access-space.org -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- A small festival bringing together cutting edge livecoding musicians and a/v artists from around the UK and beyond. Livecoding is where computer programming becomes a performance art; improvising a performance using the text of a dynamic programming language. Access Space has commissioned new works specifically for LOSS Livecode and the 2 days will feature performances, workshops, talks and informal presentations. The daytime sessions will include introductory workshops and presentations on cutting edge music and video livecoding environments including Fluxus, IXI Quarks, SuperCollider, Impromptu and ChucK. The evening sessions will feature performances by livecoding pioneers as well as collaborative jamming sessions. Performers and presenters include; Robert Atwood, Jan Berkel, Sylvain Le Beux, Oliver Bown, Alberto de Campo, Graham Coleman, Nick Collins, Jamie Forth, Karsten Gebbert, Dave Griffiths, Tom Hall, Martin Howse, Ryan Jordan, Jan-Kees van Kampen, Jonathan Kemp, Craig Latta, Thor Magnusson, Mattin, Alex McLean, Fabrice Mogini, Click Nilson, Fredrik Olofsson, Jim Prevett, Julian Rohrhuber, Andrew Sorensen, Adrian Ward, Luke Whitmore, Renate Wieser, Matthew Yee-King. More details of the events can be found at: http://livecode.access-space.org -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Access Space is the UK's first "Free Media Lab" - a community space equipped with locally recycled computers running free, open source software. We provide a framework, resources and support for self-directed learning, arts and creativity. Taking part is totally free, and anyone can walk in and contribute. http://access-space.org LOSS Livecode is organised by Access Space, TOPLAP and Lurk. Funded by Arts Council England, Yorkshire, The PRS Foundation and Access Space.

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classed-ugen-array-limit, Re; NullPointerException
by Kassen 04 Jul '07

04 Jul '07

At least some clarity; I nailed down my crash (after considerable amounts of baffled looks and cursing). This is refering to the latest version of the Mini as well as the latest, greatest, ASIO enabled, version of pure ChucK, both on XP. Let's first establish that while expensive if actually used, the following is fine; ------------------ SndBuf array[110]; ----------------------- now considder this; ---------------------------------- // I picked this 10 at random, for length 5 it'll crash too Foo x[10]; class Foo { // at length 10 it'll run but this will crash(!!??) SndBuf array[11]; } -------------------------------- So; we seem to be having a issue with maximal array sizes for arrays of Ugens within classes. I tried but there is no issue with manually going; -------------- class Foo { SndBuf a; SndBuf b; SndBuf c; etc, etc, etc } -------------------------- At least not up to and incuding 12 buffers after which I was bored with defining them. I'm 99% certain this also solves the "kilo-shred-crashing" issue I reported a while ago. This isn't likely to affect many people because we *are* talking about exceptionally large amounts of Ugens but it's very hard to work around. One solution is to simply spork functions that define the class instances instead of defining them in a array (this works) but while this allows you to conveniently define CPU clogging amounts of Ugens it doesnt enable you to easily adress them after the functions were sporked so with the current state of ChucK that gives you a whole lot of garbage.I also tried to see wether this was just SndBuf but using Gain instead also crashes so I think it's safe to asume all other Ugens will too. Yours, Kas.

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