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

.op(0)?
by Kassen 19 Dec '07

19 Dec '07

Fellow ChucKists, Dr. Spankenstein (Rhys) and me just went over some topics on the forum and a question came up about .op(0) in relation to saving CPU time. .op(0), according to the docs stops processing in the Ugen and makes it return only 0's but does that mean it also stops it from pulling Ugens before it in the chain like unchucking does? Clearly it's different from unchucking as .op(0) should allow Ugens after it to keep running (for example to avoid clicks caused by resonant filters dropping out) but I'm not sure how it relates to Ugens after it and can't find any documentation on this. This could become relevant if low on CPU while wanting to preserve click-free sound quality. Yours, Kas.

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forum vs. list (was: simple distortion/clipping)
by Stephen Sinclair 17 Dec '07

17 Dec '07

> It turns out that there are people who prefer a forum and others prefer a > list while yet others (like me) think both are nice in different ways. Yes, I understand this. I used to be more of a forum person, but things changed for me, essentially, when I got my gmail account. I find the 'label' system so good for tracking mailing lists that I can't imagine going back. While previously the idea of receiving huge amounts of mail offended me, nowadays checking on a forum just seems so chore-like to me. In any case, I've always found it funny that there aren't more forum-mailinglist combination systems out there, considering how similar the two concepts are. Some sort of phpBB-mailman integration could go a long way to solving that problem... I think there are some scripts available but it would probably take some work, and not necessarily be a good solution. > Somehow it looks like the forum appears more accessible to people who are > just starting out or are considering to jump in. The forum -so far- also > seems more conductive to colaborations, while the list tends to be more > in-depth on a technological level especially once the bugs hit the fan. I agree, there seems to be tons of cool ideas on the forum, I wish I'd checked it out earlier. It's nice to see people exploring chuck in various ways and coming up with UGen tricks as opposed to just discussing language semantics and such. (Though I'm a language nerd so I don't mind.. ;-) > points as well as a public shared VM capable of streaming for online > jam-sessions but until then I think that so far the price is worth the > gains. That is a really cool idea... and totally do-able. ajax-audicle anyone?? Steve

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MOTU UltraLite interface
by Gregory Brown 17 Dec '07

17 Dec '07

Hello all, I am thinking of getting the MOTU UltraLite interface to use with my MacBook Pro. Has anyone had any positive/negative experiences using this device with ChucK? I am particularly interested in exploring the multi- channel in/out capabilities. Thanks, Greg

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simple distortion/clipping
by Stephen Sinclair 17 Dec '07

17 Dec '07

Hi, I've been trying to figure out how to do some simple distortion / clipping in Chuck. I'm not sure I fully understand the GenX objects. Is this the best way to do it? Ideally I just want something that clips a waveform when it exceeds x or -x. Even better if the "corner" is somewhat rounded, but not necessary. I thought there might be a simple "Clip" UGen but it doesn't seem to exist. By the way, on a similar topic, what happens exactly when the signal input in "dac" exceeds [-1,1]? It doesn't really sound like clipping to me, so is it integer wrapping? I find my audio output significantly degrades (i.e., sound pops, goes silent, or makes strange unpleasant noises) when I exceed this limit, so I always have to fight to keep it within the correct range. Steve (currently working on my first chuck-related music performance!)

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ChucK says "Chuck"
by Perry R Cook 17 Dec '07

17 Dec '07

In response to a couple of threads a while ago, I present a short program that makes ChucK say "Chuck." I'm working on a complete Klatt-like speech synthesizer that will take ARPABET as input and render speech in ChucK in real time. Don't hold your breath, but I'll try to post something that does more than just say "chucK" sometime over the holidays. Best, PRC

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FYI: storing light with sound
by AlgoMantra 16 Dec '07

16 Dec '07

http://www.nature.com/news/2007/071213/full/news.2007.376.html Just thought this might be nice with your morning cuppa. -- ------- -.- 1/f ))) --. ------- ... http://www.algomantra.com

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microphone in ubuntu gutsy
by AlgoMantra 15 Dec '07

15 Dec '07

Dear All, Attached is the screenshot of my $alsamixer status in Ubuntu Gutsy. audio outputs are all working fine, but I can't seem to get my external microphone working with anything - Chuck programming language, Audacity, etc. Any ideas on how to fix this? I'm on a Compaq Presarion C500. And here is a portion of my $lspci which might be relevant here: *00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 01) 00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 01) 00:1c.2 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 3 (rev 01)* thanks in advance, -- fadereu ------- -.- 1/f ))) --. ------- ... http://www.algomantra.com

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chuck and 64-bit
by rubber glove 13 Dec '07

13 Dec '07

>From reading through the mailinglist archives, I've learned that chuck is not compatible with 64-bit operating systems. The incompatibility I can understand, but I'd just like to suggest that that information be added to the build notes/download page to save some potential frustration... The situation is especially confusing since there are (non-functional) 64-bit packages available for Debian and Ubuntu. Please let me know if I'm mistaken here, otherwise I'll add a page to the wiki detailing how to get chuck working in a 32-bit chroot environment. thanks, Martin

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shreds, namespace, functions, classes, etc
by Kassen 12 Dec '07

12 Dec '07

Dear list, Shreds are objects (of type Shred) and functions aren't objects. This is all good and well but it gets harder when we spork a function and the function becomes a Shred and hence a Object. Consider this; ------------------------ fun void tester() { "boom" => string beep; while(1) { <<<beep>>>; second => now; } } spork ~ tester() @=> Shred foo; 5::second => now; "clik" => foo.beep; //this doesn't work day=> now; ---------------------------------------- It's not so clear to me *why* the offending line doesn't work. Maybe I'm misunderstanding something or making a syntax error but I think that what we are seeing here is a loss of namespace that would be useful and I don't understand why this happens. I also tried stuff along these lines; ---------------------- class Bar extends Shred { //stuff including variables and a constructor } ------------------------------ If I do that I can instantiate a "Bar" but all it does is run it's constructor; I can't manage to spork a Bar or assign a sporked shred to a Bar. I can also make a array of Bar's but all that gets me is the constructor running; --------------------------- class Bar extends Shred { static int number; <<<number++>>>; } //print a series of numbers, no shreds in sight Bar array[5]; ---------------------------------- So, now I'm quite happy I said so many times that there are no "stupid n00b questions" because now it's my turn to ask exactly what a "Shred" is because I'm starting to feel like I have no idea. :¬) Could somebody please explain to me exactly what's going on here? Yours, Kas.

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Sending an OSC Message with no Parameters
by Christopher Graham 03 Dec '07

03 Dec '07

I'm trying to send an OSC message with no parameters, just an address string, but the examples all show the message being created with xmit.startMsg( "/..., ..."), and then sent when the last parameter is provided with say a xmit.addInt. The tutorial also says that the message is sent when all parameters have been provided. Therefore I would expect that xmit.startMsg( "/...") with no OSC parameters specified sends the message immediately. How would one trigger the sending of an OSC message such as xmit.startMsg( "/Start") ? - Chris

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