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

The ChucK Show
by Les Hall 03 Apr '09

03 Apr '09

Hi folks, Here is the description of the ChucK Show: The ChucK Show producer: Inventor (Les Hall) ChucK is a freeware music programming language from Princeton University. Those who program in ChucK, called ChucKists, share their code freely with each other under the GNU General Public License. Everyone enjoys each other's programs and all are free to copy and modify code with reckless abandon. The ChucK Show features programs written by Inventor, kijjaz, Kassen, wppk, Frostburn, Slinky, and others. You can learn about ChucK by visiting the ChucK forum on www.electro-music.com, where we all congregate to share code, help each other, and joke around a lot. Some ChucK links: http://chuck.cs.princeton.edu/ http://electro-music.com/forum/forum-140.html http://wiki.cs.princeton.edu/index.php/ChucK http://www.freedomodds.com/music/ Please post all ChucK Show submissions to the chucK forum, thanks. To hear the ChucK show, just click on over to www.electro-music.com and select "Radio". The show will be 7pm to 9pm EST, which is 23:00 - 1:00 GMT, or 4pm to 6pm left coast time. And we need more ChucK code! Please post code submissions to the ChucK forum, thanks! Les

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Re: [chuck-users] chuck-users Digest, Vol 45, Issue 1
by Les Hall 01 Apr '09

01 Apr '09

On Apr 1, 2009, at 12:00 PM, chuck-users-request(a)lists.cs.princeton.edu wrote: > > Fellow ChucKists, > > The .quine() member function of the Shred object (which returns the > code of the shred in question as a string) doesn't correctly include > comments for sporked functions. > > To demonstrate, this works; > =========================== > //this is a comment > <<<me.quine( )>>>; > ======================= > > Yet this; > > ===================== > fun void foo() > { > //this is a comment > second => now; > me.quine(); > } > > spork ~ foo(); > hour => now; > =================== > > only prints this (notice the removed comment); > > [chuck](VM): sporking incoming shred: 1 (unnamed1)... > "second => now; > me.quine();" : (string) > > This is of course quite inconvenient. > > Yours, > Kas. > Kas, I am deeply concerned about the .quine() bug. Upon further testing, it appears to ignore every other comment yet print the others. Surely we must address this blatant problem somehow. Les

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Shred.quine() bug
by Kassen 01 Apr '09

01 Apr '09

Fellow ChucKists, The .quine() member function of the Shred object (which returns the code of the shred in question as a string) doesn't correctly include comments for sporked functions. To demonstrate, this works; =========================== //this is a comment <<<me.quine( )>>>; ======================= Yet this; ===================== fun void foo() { //this is a comment second => now; me.quine(); } spork ~ foo(); hour => now; =================== only prints this (notice the removed comment); [chuck](VM): sporking incoming shred: 1 (unnamed1)... "second => now; me.quine();" : (string) This is of course quite inconvenient. Yours, Kas.

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assigning Gen7 coefs
by Gregory Brown 30 Mar '09

30 Mar '09

Hello all, I am trying to use Gen7 for the first time and I am running into trouble assigning the coefficients. The file shown in Example 2 works fine, but Example 1 generates no sound and the lookup gives only NaN. The difference between the two examples is in how I create the coefs array, although I don't see how this affects the outcome. Can someone help me understand what the difference is and why one might work while the other does not? Thanks, - Greg //+_+_+_+_+_+_+_+_+_+_+_+_+_++_++_+++_+_+ // Example 1 //+_+_+_+_+_+_+_+_+_+_+_+_+_++_++_+++_+_+ // setup Phasor driver => Gen7 g7 => dac; 220 => driver.freq; // declare array for coefs 5 => float num_values; float coefs[ ((num_values$int)*2) - 1]; // insert random values into every even index for ( 0 => int i; i < num_values ; i++ ) { Std.rand2f(0,1) => coefs[i*2]; } // insert time values into every odd index for ( 1 => int i; i < num_values ; i++ ) { 1 / num_values => coefs[(i*2)-1]; } // print it out for ( 0 => int i; i < coefs.cap() ; i++ ) { <<< "coefs[",i,"]: ", coefs[i] >>>; } // assign the table coefs => g7.coefs; // do a lookup <<< g7.lookup(.5) >>>; // loop while (true) { 100::ms => now; } // +_+_+_+_+_+_+_+_+_+_+_+_+_++_++_+++_+_+ // Example 2 //+_+_+_+_+_+_+_+_+_+_+_+_+_++_++_+++_+_+ // setup Phasor driver => Gen7 g7 => dac; 220 => driver.freq; // declare array for coefs 5 => float num_values; float coefs[ ((num_values$int)*2) - 1]; // directly assign floats to array [0.709912 , 0.200000 , 0.496574 , 0.200000 , 0.911184 , 0.200000 , 0.270048 , 0.200000 , 0.701863] @=> coefs; // print it out for ( 0 => int i; i < coefs.cap() ; i++ ) { <<< "coefs[",i,"]: ", coefs[i] >>>; } // assign the table coefs => g7.coefs; // do a lookup <<< g7.lookup(.5) >>>; // loop while (true) { 100::ms => now; }

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ChucK Internet Radio Broadcast
by Les Hall 28 Mar '09

28 Mar '09

Yesterday (Friday March 27, 2009) we enjoyed the first ChucK internet streaming broadcast on electro-music.com. Kassen was there in the chatroom and he had a fun exchange with my friend Carroll who was here in my studio for the broadcast. I think they were talking about her fingernails for some reason. Whatever. All had a blast! There was a tiny bit of dead air, but for the most part things went well. I played some of kijjaz's stuff and some of mine as well. We improvised and I coined the phrase "Jack Noise!", referring to the sound that my puter makes when I unplug or replug the jack to switch from ChucK to mic or revverse. All in all things went well and I invite you to next week's show on Friday at 23:00 to 00:00 GMT. Be there or be square! Les (Inventor)

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first video from live ChucK gig w/ modlys
by Atte André Jensen 27 Mar '09

27 Mar '09

Hi A couple of weeks ago I announced a gig with my electronic project, modlys. One of the audience recorded a couple of tracks on his mobile, and the first one is here: http://modlys.dk/video/fodspor_vcd.mp4 Only audio software running is chuck under linux. -- Atte http://atte.dk http://modlys.dk

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EChucK Forum and Progress Update
by Les Hall 25 Mar '09

25 Mar '09

Hello ChucKists! I'd like to announce that we just created an EChucK forum right next to the ChucK forum on www.electro-music.com. I was really surprised and happy with this especially since the project is still in its infancy. Some updates: I bought a netbook running XP (love it!), which now enables me to run the microchip MPLAB IDE so I can now write code for the EChucK dsPIC chips. After extensive learning curve of a few days I was able to write a simple little program that generates a square wave. I still don't have chips or a programmer, but that will happen in time. I also finally figured out how to cut up the EChucK circuit boards that I've had for months now into the little bitty boards that are the basis of EChucK. I used a Dremel tool with a diamond cutting wheel in a rickety drill press stand and thus created a very crude sort of horizontal PCB table saw. It worked pretty well, though some of the cuts were a little too close. I cut one board up for experimentation and left the other three intact. Also on the www.justinguitar.com forum, the other day I was mentioning EChucK and the possibility of doing guitar synth stuff with it. It turns out that one of the moderators there is looking for that "Matt Belamy of Muse" guitar sound and wants me to make us both a little mini guitar pedal. We decided to code up a test file in ChucK first, which I did with AGC followed by soft distortion to get something like the sound that he wanted. So it looks like after the square wave program, the first real application of EChucK will be to implement a ChucK program for guitar synth. That's about it for now. Please feel free to stop by the EChucK forum or view the EChucK web page at www.freedomodds.com/music/echuck/ . Les (Inventor)

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two patches
by Atte André Jensen 23 Mar '09

23 Mar '09

Hi I'm not sure posting patches here is the right thing to do, maybe I should put them elsewhere? At least I'm hoping this could be fixed in this years release! The first allows 2 byte midi messages, for instance allowing program change to be send from chuck. The second allows --channels>2 (also --in and --out) with jack + makes chuck *not* connect its jack ports. Without this --channels3 (or greater) doesn't work for me. Both are simply disabling some checks or code that IMHO are too strict. The first have been running flawlessly for over a year. The second seems to work just fine with some quick testing. Of course any feedback/discussion from users regarding the behavior would be interesting. -- Atte http://atte.dk http://modlys.dk

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stereo buffer?
by Matt Diamond 20 Mar '09

20 Mar '09

Thanks for the responses to my previous question... my little glitch sequencer project is coming along quite well now. Just a quick question: Is it true that LiSa has absolutely no way to connect individual voice inputs/outputs as part of the signal chain? I wanted to use LiSa as a stereo buffer, and I assumed that the multiple voices would make it easy to assign the left channel to voice 1 and the right to voice 2, but if I can't connect them to separate adc/dac channels, then I guess it's impossible. Should I just create my own stereo buffer class that contains two separate LiSa objects? - Matt

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Congrats to Ge
by Mark Knecht 19 Mar '09

19 Mar '09

for getting his picture in the Mercury News Tech section today playing a wind instrument created with the iPhone. (At least I think it's our own Ge Wang!) :-) Looks like fun. Maybe I'll have to get an iPhone. I'm curious as to whether the demo used ChucK? Check out pictures 15 & 16: http://www.mercurynewsphoto.com/2009/03/iphone/ Cheers, Mark

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