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

new [chuck~] max/msp object
by Brad Garton 04 Feb '11

04 Feb '11

(Most of you on this list already know what ChucK can do, but here is my generic announcement for those interested) Everyone -- Version 1.6 (Max5) of the [chuck~] Max/MSP object is available for free download: http://music.columbia.edu/~brad/chuck~/ for Macintosh OS X (10.5/6). The new [chuck~] object is up-to-date with the latest (v 1.2.1.3) release of the ChucK language, including the LiSa live-sampling unit generators and the unit-analysis generators in the 1.2.1.3 package. [chuck~] imbeds the ChucK music-programming language in Max/MSP, bringing a sophisticated set of synthesis and signal-processing tools into the Max/MSP environment. [chuck~] also features an advanced timing and scheduling system in addition to a functional-style programming interface for algorithmic operations. Full source for the object and the language are also on-line. No Windows version is available at present -- sorry! This is a fun object -- enjoy it! For more information about ChucK, visit the ChucK web page: http://chuck.cs.princeton.edu/ Brad Garton, Director Columbia University Computer Music Center http://music.columbia.edu/~brad

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Removing room reverb - any algorithms or chuck programs to do this?
by Rich Caloggero 01 Feb '11

01 Feb '11

Is this even possible? I know very little about DSP. I was talking to a former Lexicon employee and he said they were looking into building hardware to do this, but the projects seems to have suffered an untimely death. -- Rich

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Re: [chuck-users] bryan Eidel's problem with DAC in MiniAudicle
by Perry Cook 31 Jan '11

31 Jan '11

Aha, this is a known problem with Mini where it loses it's mind as regards the audio device(s). Happens most often when a sound device has been plugged/unplugged, but can happen when you've changed devices otherwise. Fix is easy: Go into MiniAudicle Preferences and hit "Restore Defaults" button. (if you had file paths set up, then you'll need to go and fix those again). But after that Mini can see the DAC again. PRC > From: bryan Eidel <bryan_eidel(a)att.net> > To: ChucK Users Mailing List <chuck-users(a)lists.cs.princeton.edu> > Subject: Re: [chuck-users] (no subject) > Message-ID: <181996.71605.qm(a)web180213.mail.gq1.yahoo.com> > Content-Type: text/plain; charset="us-ascii" > > when i try to add any shred it tells me ugen's of type DAC have no input-cannot

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(no subject)
by bryan Eidel 30 Jan '11

30 Jan '11

having some issues with mini audicle want to know why when i run virtual machine it says shred hanging and dont know why have deleted re downloaded and it wont let me add a shred to virtual machine can anyone help me

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Re: [chuck-users] m-A to Quartz
by David Loberg Code 29 Jan '11

29 Jan '11

I can pipe m-A to Quartz via Soundflower, but then I am not able to hear it. I tried combining Soundflower and the regular audio output by making an aggregate audio device with OS X's Audio/Midi Set-up. This solution doesn't make sound AND doesn't affect Quartz. > Hi David, > > Yeah, Soundflower is what I would use for this. Set miniAudicle output device to Soundflower (2ch) and Quartz composer's audio input to the same. > > Sounds like you're doing something interesting! > > Best of luck, > Anthony. david David Loberg Code School of Music Western Michigan University 1903 W Michigan Ave Kalamazoo, MI 49008-5434 code(a)wmich.edu

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Frequency domain and fractals?
by Wolfgang Gil 29 Jan '11

29 Jan '11

Hello, Does anyone knows about any interesting book, paper, etc using chaos for sound generation? I have seen some documentation about chaos and music but until now everything has been related to the organization of the notes through a "chaotic system". None of them to the actual generation of sound. I'm wondering if it would be interesting to employ non-lineal equation's systems to populate fft matrixes (like the Gabor matrix) and then translate that data into sound using inverse fft... Any thought? -- Wolfgang Gil http://www.wolfganggil.com

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The ChucK Method Book
by Zed A. Shaw 28 Jan '11

28 Jan '11

Hi folks, long time lurker, infrequent poster. I've recently finished a book for Python and I'd like to do a similar one for ChucK. The Python book is "Learn Python The Hard Way" and it's written similar to a guitar method book: http://learnpythonthehardway.org/ What I'd like to do next is a "ChucK Method Book" in a similar style, but actually make it more like a real method book for an instrument where the student is learning to "play chuck" like they would an instrument. If I were to do this, what do you think it should include? Do you think it's a good idea? Have you tried teaching ChucK? Thanks! -- Zed A. Shaw http://zedshaw.com/

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Re: [chuck-users] m-A to Quartz
by Anthony Bowyer-Lowe 28 Jan '11

28 Jan '11

Hi David, Yeah, Soundflower is what I would use for this. Set miniAudicle output device to Soundflower (2ch) and Quartz composer's audio input to the same. Sounds like you're doing something interesting! Best of luck, Anthony.

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m-A to Quartz
by David Løberg Code 27 Jan '11

27 Jan '11

How can I send the audio output from mini-Audicle to the input of a Quartz composer visualizer? (I want the m-A audio to go out to speakers AND to Quartz...just like iTunes.) Do I use Soundflower? Do I need to create aggregate audio device? thanks, david David Loberg Code School of Music Western Michigan University Kalamazoo, MI 49024 269-387-4667 code(a)wmich.edu

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Re: [chuck-users] Chaos functions in ChucK.
by Anthony Bowyer-Lowe 25 Jan '11

25 Jan '11

Hey Ronni, I have been meaning to implement some chaotic type functions in ChucK for some time: Perlin noise, Buchla-esque source of uncertainty, Brownian motion LFO, composite complex modulation sources, etc. I have some personal audio design projects coming up for which I intend to prototype the synth system in ChucK so, if I get time, if you're lucky, and if I make anything of worth, I'll share what is produced. A. > other question , Do any body have made chaos functions in chuck? or > maybe there are examples of this? >

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input gain analysis, LiSa example
by Michael Heuer 22 Jan '11

22 Jan '11

Hello ChucKers, I'm thinking of giving the RPM challenge (http://rpmchallenge) a try this February and am missing two things from my ChucK kit 1) A ChucK snippet to analyze the gain of an input signal. I could just watch for peak values every sample but that doesn't seem like the right thing to do. 2) An example/tutorial of how to use LiSa to approximate a looper pedal (record, overdub, undo, redo). See e.g. http://www.essej.net/sooperlooper/ http://web.mit.edu/~eric_r/Public/mmmtsss/ Thanks in advance, michael

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Re: [chuck-users] Using Fourier Transform
by Rebecca Fiebrink 16 Jan '11

16 Jan '11

Hi Lucas, Sorry for the late reply. But since one doesn't really learn the true nature of the FFT in 5 days, I think this may still be helpful. My favorite resources for learning & teaching about FFT are: - Julius Smith's online tutorial: https://ccrma.stanford.edu/~jos/mdft/ - Ken Steigglitz's book: http://www.amazon.com/Digital-Signal-Processing-Primer-Applications/dp/0805… This book will teach you not just about FFT, but about musical signal processing in general -- it's well worth the money. Both are written with music in mind. For a much higher-level overview, you can see my FFT "cheat sheet" here: http://www.cs.princeton.edu/~fiebrink/314/2010/week8/FFT_handout_2010.pdf along with code examples from that day of class here http://www.cs.princeton.edu/~fiebrink/314/2010/week8/ and scribe notes (written by a student) here http://www.cs.princeton.edu/~fiebrink/314/2010/week8/scribe_Mia.pdf Best, Rebecca On 2011-01-11, at 9:00 AM, chuck-users-request(a)lists.cs.Princeton.EDU wrote: > > Date: Tue, 11 Jan 2011 09:27:42 -0200 > From: Lucas Zawacki <lfzawacki(a)gmail.com> > To: ChucK Users Mailing List <chuck-users(a)lists.cs.princeton.edu> > Subject: [chuck-users] Using Fourier Transform > Message-ID: > <AANLkTi=vBnKCqQoKaii3Bq1jscdnqqLd1j21PUkBsPPi(a)mail.gmail.com> > Content-Type: text/plain; charset=ISO-8859-1 > > Sup guys. This is not much of a ChucK question but here goes... > > I have some free time now to experiment with ChucK and I dug up some > old emails from the list. There's one talking about analysing the > frequency of a given signal and the short answer was to use the FFT. > > I decided I would try this aproach in order to receive input from my > guitar, match the frequency being played and then issue a MIDI event > to another synthesizing app. The problem is that I have a very > abstract understanding of the FFT (I've used it before to do simple > image processing). It does makes sense to me, e.g I can visualize in > my mind what the FFT of a simple sound wave would look like, but I > wasn't competent enough to extract the absolute pitch data that I > wanted. > > Anyway can someone elaborate a little more on the topic of frequency > analisys or maybe point me to a good tutorial? > > I think I'll start with the wikipedia article on the Fourier Transform > and see where it gets me... > > -- > http://www.twitter.com/lfzawacki > http://www.linesocode.wordpress.com > > > ------------------------------ > > _______________________________________________ > chuck-users mailing list > chuck-users(a)lists.cs.princeton.edu > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users > > > End of chuck-users Digest, Vol 66, Issue 9 > ******************************************

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Music Hack Day coming to New York
by Jordan Orelli 13 Jan '11

13 Jan '11

there's an audio-related hackathon coming up in NYC. 16 spots left. I'll definitely be in attendance. It'd be cool if there was some ChucK presence there :-D http://nyc.musichackday.org/

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Using Fourier Transform
by Lucas Zawacki 11 Jan '11

11 Jan '11

Sup guys. This is not much of a ChucK question but here goes... I have some free time now to experiment with ChucK and I dug up some old emails from the list. There's one talking about analysing the frequency of a given signal and the short answer was to use the FFT. I decided I would try this aproach in order to receive input from my guitar, match the frequency being played and then issue a MIDI event to another synthesizing app. The problem is that I have a very abstract understanding of the FFT (I've used it before to do simple image processing). It does makes sense to me, e.g I can visualize in my mind what the FFT of a simple sound wave would look like, but I wasn't competent enough to extract the absolute pitch data that I wanted. Anyway can someone elaborate a little more on the topic of frequency analisys or maybe point me to a good tutorial? I think I'll start with the wikipedia article on the Fourier Transform and see where it gets me... -- http://www.twitter.com/lfzawacki http://www.linesocode.wordpress.com

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TweecKs
by Spencer Salazar 07 Jan '11

07 Jan '11

Hello everyone! Inspired by a forum thread[1], a Stanford CCRMA homework assignment[2], and something similar I heard about in the SuperCollider world, I have created a community-driven Twitter account for the express purpose of broadcasting meaningful, self-contained ChucK programs that fit into a single tweet. The programs tweeted from this account will be based on submissions from folks like yourselves. I will be acting in a limited curatorial role due to the nature of this sort of thing, but the goal is really to get as many interesting programs from as many people as possible. Without further ado: http://twitter.com/TweecKs To submit your program, simply tweet it to @TweecKs. You can also send me an email: spencer at ccrma.stanford.edu. If you send me an email, please make sure your program is 140 characters or less, including a block comment with a credit (if desired). There aren't any guidelines as far as quality; as long as it runs, makes sound, and doesn't do anything apparently malicious to people's computers, its good! And, if you are a Twitter user, do consider following @TweecKs, to stay up-to-date on the latest in concise audio programming! [1] http://electro-music.com/forum/viewtopic.php?t=13512 [2] https://ccrma.stanford.edu/wiki/220b-winter-2011/hw0#Specification_.28part_…

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chuck in a safe box?
by Zed A. Shaw 06 Jan '11

06 Jan '11

Hi, I'm toying with a small idea to let people upload bits of chuck code to a website and then have it play out to the world. I haven't started coding anything yet, but I was wondering how hard it is to put ChucK into a safe environment so that it can't touch the OS? In Lua I'd do that by ripping out the various OS features. Is there a similar thing with Chuck? -- Zed A. Shaw http://zedshaw.com/

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chuck posibilities at sample level
by ronni montoya 04 Jan '11

04 Jan '11

Hi, im new in this list, i was using supercollider before, somebody told me about something about the posibilities of chuck for making sample level operations. Can anybody explain me about this? Do you think chuck has new posibilities related to sample level synthesis? that cannot been done with sc3? can anybody explain this further? thanks in advance R.

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chuck for live coding
by ronni montoya 04 Jan '11

04 Jan '11

Hi everybody ,im new with chuck ive downloaded chuck and i was playing with it. I was wondering is it possible to run a command directly in the shell instead of saving the code in a .ck file and execute it ? are there any tutorial or examples of chuck for live coding out there? thanks R.

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Selecting Driver
by Tom Aizenberg 01 Jan '11

01 Jan '11

Hi all, Is it possible to select which driver for the soundcard I want to use? Like in Reason or Logic you can select the ASIO driver and change the buffersize... Any help would be appreciated! Greetings, Tom

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newbie envelope follower question
by daniel gomez 22 Dec '10

22 Dec '10

Hi guys(sorry that i sent this same email to the chuck list and not the chuck-users)Im just getting started this week in chuck. Been reading the documentation and following the examples, but im stuck with trying to start an envelope that contours the filter frequency just when i hit any key. I have this patch (below) that (supposedly) contours the filter and the oscilator at the same time, but i dont get what is wrong cause it is not working. It seems as if the envelope is sliding but it is not being updated when the amplitude envelope is on. Im sorry if this is too obvious but have not found a way to do it. ThanksHid entrada; HidMsg mensaje;0 => int device; if( !entrada.openKeyboard( device ) ) me.exit();//El patchSawOsc o1 => LPF f=> Envelope e1 => dac;Step stp => Envelope e => blackhole;1 => stp.next;400 => e.value;800 => e.target;2 => e.time;o1.gain (.2);0.020 => e1.time;o1.freq(200);while (true){entrada => now;e.last()+200=> o1.freq;e.last()+200=> f.freq;while( entrada.recv( mensaje ) ) //cuando 'entrada' reciba un 'mensaje'{if( mensaje.isButtonDown() ){1=>e1.keyOn; 1=>e.keyOn;}if(mensaje.isButtonUp()){0=> e.keyOn;0 => e1.keyOn; }}}

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Circular references in class definitions
by Jordan Orelli 08 Dec '10

08 Dec '10

in short: Is there any way to have two separate classes that reference one another in their definitions? I want objects of type A to encapsulate a collection of objects of type B, but for objects of type B to also be able to hold a reference to their containing object. Alternatively, I could use an event system where the child objects (class B) raise an event that the containing object (class A) listens to. I'm not entirely familiar with ChucK's event model yet, though. Here's the full story of the problem: I'm currently working on an instrument for the Novation Launchpad using ChucK. The rest of my explanation assumes you have a basic familiarity of the layout and functionality of the Novation Launchpad. The way it's structured, I have one class called Launchpad that is responsible for all data and functionality common to an individual device. It contains a collection of 8 LPIs (Launchpad Instruments). At any given time, one LPI on the device is in focus; interaction with the main grid and rightmost column controls that LPI. The topmost row selects between the 8 LPIs. The Launchpad object's main jobs are to allow the user to switch focus between LPIs, and to observe MidiIn messages from the physical device. So the Launchpad class handles and routes incoming data. The LPIs are the actual synthesizers; they manage (most) outgoing data. The problem I'm faced with is that the individual LPIs don't have a reference to the Launchpad itself, so I'm having trouble tracking the state of the MIDI lights in ChucK. This is needed to reduce the number of MIDI messages that I send to the device; ultimately I want to prevent any MIDI message that would tell the device to turn off a light that's already off. These messages have been creating a bottleneck, and under certain circumstances introduce unacceptable delay. You can view the source, and if you have a Launchpad check it out and play with it here: https://github.com/jordanorelli/chuckpad -Jordan (this is my first Github project, so please let me know if I have it configured wrong and you can't actually checkout the project; it's intended to be public)

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Chuck Dynamic Linking?
by mike clemow 08 Dec '10

08 Dec '10

Dear Dev'rs: >From the documentation here: http://chuck.cs.princeton.edu/doc/program/stdlib.html "ChucK Standard Libraries API these libraries are provide by default with ChucK - ****new ones can also be imported with ChucK dynamic linking (soon to be documented...).***" (emphasis mine) Does "soon to be documented" mean that the functionality already exists in the current version or in CVS or at all? And the obvious follow up: If it's in the current version or CVS, can we have a hint? Is there a secret Chuck pre-processor? Cheers, Mike -- http://michaelclemow.com http://semiotech.org

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Fwd: [livecode] Call for proposals: CMJ live coding videos
by Kassen 06 Dec '10

06 Dec '10

Fellow ChucKists, Bellow is a message from Alex McLean that was posted to various related lists but not (yet) here. It might be interesting to some? I'd like to add that I personally like seeing completely improvised performances by people trying to come to grips with new ideas at least as much as slick pre-planned presentations. I'd argue that the former have a bigger chance of sharing "public thought" than the latter. Yours, Kas. ---------- Forwarded message ---------- From: alex <alex(a)lurk.org> Date: 3 December 2010 18:21 Subject: [livecode] Call for proposals: CMJ live coding videos To: livecode(a)toplap.org Hi all, Some exciting news I think -- Thor, Nick and I have been asked to get together some live coding videos for a forthcoming issue of Computer Music Journal. We've put together a formal call here, feel free to share it around: http://tinyurl.com/dvdcmj The ideal is to have all live coding environments represented, including experimental ones, along with all livecoders, active, dormant and lurking. So please throw in a proposal - it doesn't have to be fully formed or binding at this stage. Unfortunately there isn't any funding for any of us, but we hope this will be a really good project to be part of, and contributors would keep full copyright over their work. The deadline for brief proposals is 20th December, with notification hopefully by the end of the year. The deadline for submission of videos will be 1st April. Feel free to bring up ideas for collaborative videos here if you wish... Cheers!

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New user, first question
by Chuck Ivy 02 Dec '10

02 Dec '10

Hello, chuckers. I'm new to the language and am working on my first project (code to perform Terry Riley's "In C"), and I've got two related questions: First, is there a way to regulate, compress or limit the cumulative volume of shreds? Through the tutorial/documentation, I saw the .gain operator, but I'm thinking that I'll have a variable number of shreds, so figuring out the cumulative gain cuts in advance wouldn't make sense, and really, I'll mostly be in danger of clipping when the additive waves are in phase and frequency, but perhaps not elsewhere, but I wasn't seeing any obvious unit analyzers for compression or gain control. Second, and parallel to that, is there a way to globally change the gain of the master dac for dynamics when the generators are in different shreds? Thanks... I'm just getting started, and I'm sure I'll have more interesting questions down the line once I've gotten beyond my simple note player project. -- *Chuck Ivy,* research artist chuckivy(a)gmail.com 323.842.0357 http://www.chuckivy.com/

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8-bit?
by Tom Lieber 28 Nov '10

28 Nov '10

Is there a nice UGen I could be using instead of bitmaster in this snippet? (um, you kinda need scale.ck to run it http://www.dtic.upf.edu/~gcoleman/chuck/tutorial/tutorial.html) //BlitSaw osc => blackhole; //SawOsc osc => blackhole; TriOsc osc => blackhole; Step bitter => ADSR env => dac; env.set(1::ms, 40::ms, .1, 300::ms); spork ~ bitmaster(); Scale sc; [0, 1, 3, 8, 6, 4] @=> int notes[]; while(true) { for(0 => int i; i < notes.size(); i++) { sc.scale(notes[i], sc.maj) + 60 => Std.mtof => osc.freq; env.keyOn(1); second/6 => now; env.keyOff(1); second/7 => now; } } fun void bitmaster() { 4 => float bits; while(true) { (osc.last() * bits) $ int => int rounded; rounded / bits => bitter.next; samp => now; } } -- Tom Lieber http://AllTom.com/ http://favmusic.net/

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