May 2009 - chuck-users - lists.cs.princeton.edu

Re: [chuck-users] sillyness witth file names (Kassen)
by Les Hall 16 May '09

16 May '09

Les; couldn't he have made a script that would loop over the dir and delete anything that wasn't named like any of the other files? Yours, Kas. Kas I really don't know if that would have worked, we just all thought it was kind of funny. Les

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Mix2 doesn't mix?
by Tom Lieber 15 May '09

15 May '09

Documentation says Mix2 will "mix stereo input down to mono channel." But then why does this example play the sine wave in my left ear and the noise in my right? Mix2 mix => dac; SinOsc s => mix.left; Noise n => mix.right; 1::second => now; Am I using it wrong? -- Tom Lieber http://AllTom.com/

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sillyness witth file names
by Kassen 15 May '09

15 May '09

Dear list, I just discovered this is a valid filename under Linux (you can still play the file by double-clicking, even); foo";Machine.crash();"bar.wav This means that this; my_buffer.read("my_file"); //gives a syntax error with the above filename is more safe to use than this; "my_file" => my_buffer.read; //this parses, then crashes with the above filename. This isn't much good for anything, aside from pointing out that there can be valid files that can't be played back by ChucK, but it's a exciting, new and especially perverse way to crash so I find that noteworthy on it's own. Happy crashes and a good weekend, Kas.

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Re: [chuck-users] sillyness witth file names
by Les Hall 15 May '09

15 May '09

Not to get off topic too far, but this reminds me of a funny situation back in college. Someone had managed to create an undeletable file, and even the superusers could not delete it. I think it had a single space character as the filename and the Unix of the day didn't let you surround a filename with quotes (this was close to 20 years ago). So the file lived on eternally, lol. Another funny story from college: One day the sysop asked me for my password. I replied sharply with what sounded to him like "bite me", an obvious rude remark. He said "No, really, I need it to fix some stuff." I replied by spelling out the password: "That's the password: byteme". Everyone had a great laugh. We now return you to your regularly scheduled ChucK mailing list. Les

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Diatonic tuning system
by Hans Aberg 13 May '09

13 May '09

This code now allows defining diatonic tuning systems, which once defined, selects the intervals. It is very easy to add a new tuning system: just one line. Plus adding its name were you want to have it on the keyboard. A tuning system is defined by giving intervals, which can be given in different units (ratio, log, cents), and their diatonic coordinates, plus an octave which needs not be the interval ratio 2 or be equal to 2m+5M. Intermediate pitches are supported (but at most one for the moment). Also a function that computes all ETs, plus some other illustrating tuning systems. In order to illustrate that the octave needs not the interval ratio 2, Georgian style tunings have been added, which divides the perfect fifth into four equal steps, so that m = M and the octave is slightly sharp. Plus Bohlen-Pierce scales, dividing the ratio 3 into 13 steps, with the octave 5m+4M. And the intermediate pitches are illustrated by Just intonation relative Pythagorean (might also be used for Turkish music description), Turkish E53, and Persian style tunings. So with just one neutral second added, one can cover a lot. Details: see the file. Stay tuned! Hans

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Re: [chuck-users] The ChucK Show
by Les Hall 13 May '09

13 May '09

Hello ChucKists! I have good news regarding The ChucK Show. We are now set up for live ChucK! That means instead of a playlist of pre-recorded ChucK mp3's, the show will feature actual ChucK programs running in real time. This allows me to do stuff like run interactive programs like Digitar, Generator, and Guitar Lab as well as play multiple ChucK programs simultaneously. I even coded up a ChucK program that uses my homemade DIY ChucK controller to permit hardware control of the microphone and I added a "Demonic Chipmunk" Vocoder to the program as well. You'll have to tune in to hear the Demonic Chipmunk Vocoder in action, it is funny! Cheers, Les (Inventor)

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"pure"
by Tom Lieber 10 May '09

10 May '09

class X { fun void doit(); } [Untitled]:line(2): function declaration must contain code... [Untitled]:line(2): (unless in interface, or is declared 'pure') [Untitled]:line(2): ...at function 'doit' interface X { fun void doit(); } [Untitled]:line(2): function declaration must contain code... [Untitled]:line(2): (unless in interface, or is declared 'pure') [Untitled]:line(2): ...at function 'doit' class X { fun pure void doit(); } [chuck](VM): sporking incoming shred: 1 (Untitled)... Does anybody use "pure" or know what it does? The last example seems to be equivalent to saying "fun void doit() { }". -- Tom Lieber http://AllTom.com/

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iPhone => ChucK
by Mark Cerqueira 10 May '09

10 May '09

Hi all, About a week ago I posted a message about one of many options, OSCTouch, to use an iPhone/iPod Touch as an interface device via OSC for musical performance. There were some responses on other apps that could be used, OSCemote and Mrmr, so I got all of them and played around with them. Fortunately, I also had a PLOrk final that involved creating a new instrument so I figured I might as well give it a go and see if I could get the iPhone to speak to ChucK directly. Here is the final product: http://wiki.cs.princeton.edu/index.php/PLOrk2009/MarkCerqueiraFinalProject I wrote a new class called OSCemote.ck that lets OSCemote speak directly to ChucK. The wiki page has links to the code, sample files to mess around with, implementation details, and known issues/future work. I figured some on this list could make good use of an iPhone that talks to directly ChucK. Enjoy! Any feedback on improvements/issues is, as always, very welcomed! Best, Mark

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Re: [chuck-users] The ChucK Show
by Les Hall 09 May '09

09 May '09

Hi folks, We had a really big big shew last week and we're up to show 7 now! Sunshine was a blast as always and her psychotic dog Ginger interrupted with barking as usual, haha! Last week we featured wmonk and the one and only Ge Wang as our two Chuckists of note! Will you be next? We need material so post away with code or mp3's, thanks! You can get recordings here: http://electro-music.com/radio/archives/ Peace Out! Les (Inventor)

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Array out of bounds.... error usability
by Kassen 08 May '09

08 May '09

Fellow ChucKists, I have a ArrayOutOfBounds error and I'm quite sure that's one of my mistakes, not a ChucK one. This will require a bit of searching as I have rather a lot of arrays here and rather a lot of different things are done with them. Let's have a look at this; ArrayOutOfBounds: in shred[id=2:tr8or.ck], PC=[3565], index=[4] Ok, so it's a array that gets defined in my main shred and it's one that's 4 or less elements in size. That narrows it down considerably but we're not there yet. Now, I have the feeling that ChucK is trying to tell me something with the "PC=[3565]" but that bit is quite useless to me as I have no idea what it means. Questions; What does the PC bit mean? How is it useful? Can we consider ways of making it more useful? Yours, Kas.

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