March 2012 - chuck-users - lists.cs.princeton.edu

include/import (am noob)
by George Locke 05 Mar '12

05 Mar '12

Hi, I want to make a library of functions that I can call from any chuck script. If I put those functions in one file, how do I access them from another? It would be great if I could make them into a new namespace, akin to Std.X or Math.X (I am using miniAudicle 0.2.0, not command line.) (I checked the language specification for the words "include" and "import" and found nothing relevant.) Thanks, George (I am new to chuck, but not to computer programming, nor computer audio.) PS is there a popular/built-in solution for making exponentially distributed, normally distributed, etc random variables? PPS If not, I'd be happy to share my work - is there a common way for people to share code like this?

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Re: [chuck-users] serial communication and chuck
by N. Cameron Britt 05 Mar '12

05 Mar '12

YES! Chuck NEEDS serial. Of course it's true that all of this can be accomplished using some other application and OSC, but it's cumbersome and lame to have to use another application *only* to get access to serial. I've had to do this for several projects, including one I'm working on now. HIDUINO seems like a promising alternative for Arduino stuff, but I wasn't able to get it working right, so I gave up on it. Maybe others have had luck with that? Cameron

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public class connections mystery
by David Ogborn 05 Mar '12

05 Mar '12

Hello again Chuckists, This is the second time today that I harangue the list with a question about some unexpected behaviour from code (unexpected to me, anyways!). This one is a bit more complicated… I declare a public class that maintains a static array of oscillators and envelopes (through a helper class). A function in the public class creates a new oscillator and envelope, and connects them both to the dac. Another function in the public class makes the envelope "go". Now here's the funny thing, to my mind: (1) If I call the creation function and the "go" function from the same (second) shred, everything works. (2) If I call the creation function in one shred and the "go" function in another shred, there is no sound - and a little investigation seems to reveal that the ugens all exist and are accessible, but are no longer connected to each other. (3) If I call a special "connect" function - _from any shred_ - that simply reestablishes the connections, then the "go" function works when called _from any shred. Here is an example of "calling shreds" and below that is the public class code: // one possible shred… Cells.sinOsc("low",28); // I want this to work from a separate shred but there is no sound/connections Cells.ad("low",5::ms,5::ms); // However, the above starts to work again if this is called from any shred Cells.connect("low"); // public class code in a separate file and shred class Cell { Osc o; Envelope e; } public class Cells { static Cell @cells[]; function static void sinOsc(string name, float nn) { Cell c; new SinOsc @=> c.o; nn => Std.mtof => c.o.freq; new Envelope @=> c.e; c.o => c.e => dac; c @=> cells[name]; } function static void ad(string name, dur att,dur dec) { cells[name] @=> Cell c; 1 => c.e.target; att => c.e.duration => now; 0 => c.e.target; dec => c.e.duration => now; } // the function below shouldn't be necessary, I don't think // but it is… unless connect is called on a given cell from // a shred other than the shred that calls sinOsc, the // ugens are not connected to the dac! ??? function static void connect(string name) { cells[name] @=> Cell c; c.o => c.e => dac; } function static void note(string name, float nn) { nn => Std.mtof => cells[name].o.freq; } } Cell theCells[0] @=> Cells.cells; while(true) { <<< "public class Cells is still alive" >>>; 10::second => now; } // Thanks for any help! // Yours truly, // David ------------------------------------------------------------------- Dr. David Ogborn, Assistant Professor Communication Studies & Multimedia Director, Cybernetic Orchestra & ESP Studio McMaster University, Hamilton, Canada ogbornd --at-- mcmaster.ca http://davidogborn.net http://twitter.com/ogbornd http://esp.mcmaster.ca (Cybernetic Orchestra) 1-905-525-9140 ext 27603

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serial communication and chuck
by Scott Smallwood 04 Mar '12

04 Mar '12

Hey all, I'm wondering if anyone on this list knows whether there are any plans to (finally) implement serial communication in ChucK? I ask because, as someone who has been teaching Arduino-related things, I've basically stopped teaching ChucK in favour of Pd, simply because there isn't any way to get communication happening between ChucK and Arduino except through a third environment (like Processing via OSC or something). I understand that it isn't that difficult to do this via OSC and Processing (or java or whatever), but it introduces an unfortunate stumbling block for beginners, and I find that it is just easier to teach in an environment that has native serial communication abilities (like Pd, Supercollider, etc). But really, I'd MUCH rather teach ChucK, as I find that it is such a good teaching language and has so many out-of-the-box features thanks to the native implementation of percolate... I posed this question a couple of years ago and it seemed like there was lots of interest in making this happen, but as far as I know, nobody has stepped up. Any thoughts? --ss [ - ] - [ - ] - [ - ] - [ - ] - [ - ] - [ - ] - [ - ] - [ - ] - [ - ] S c o t t S m a l l w o o d composer, sound artist faculty of arts, u of alberta scott.smallwood(a)ualberta.ca http://www.scott-smallwood.com http://www.ecnedive.com

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The iLes Project
by Lester Hall 04 Mar '12

04 Mar '12

Hello ChucKists! I have been away from the list for a while and I am back now with a new project. Basically I am doing motion control of music for exercise and weight loss purposes, plus also for performance art. A friend has provided many samples of things like drums, robots, light sabres, thunder, etc. and I am also using the ChucK instruments in addition to the samples. The idea is that for a music programming geek like me, it will be a fun adventure to develop software and hardware combinations that permit me to dance my way to a better state of physical fitness. So far I have been working on gestures recognized from the (x,y) inputs of my Gyration Air Mouse, and soon I will get an iPod Touch for this purpose as well. Then I will have a sensor for each hand / arm, both of which interface with ChucK, plus the iPod Touch can be used in a standalone mode using the right apps. So far my best program is the flute and I have added frequency scale and time quantization at my friend's suggestion which really helps it sound good. I am also creating a music album for release on the EdP netlabel and video blogging my progress on electro-music.com, the home of the ChucK forum. If you have any questions or suggestions, I welcome them - and have a great day! Les

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Jam On It: ChucK-based low latency jamming system
by Lester Hall 02 Mar '12

02 Mar '12

Hi ChucKists, Please see this forum thread: http://electro-music.com/forum/viewtopic.php?p=355340#355340 for an introduction and initial release of a quickly coded little jamming system based on MIDI over OSC. I tested it last night and it worked on localhost. Tomorrow (Saturday 3-3-12) we will have a jam session on radio.electro-music.com and you are invited to join up and be part of the fun! I will be coding more features such as more instruments / players, etc. today and we'll begin jamming sometime on Saturday morning, USA time. Please join the electro-music.com chatroom to coordinate with the rest of us. Les

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