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

check audio devices and set audio input
by COLORSOUND 28 May '08

28 May '08

hi guys , I,m fresh new user , i,m completly lost , How can check which devices chuck recognise in my computer ? and more important how do i set from which channel the audio is coming for recording an audio file ? I download this file for getting the recording order from vvvv , but dont see where to set the aduio recording input : WvOut w; OscRecv recv; 6449 => recv.port; recv.listen(); recv.event( "/record, i, s" ) @=> OscEvent @ oe; int isRecording; 0 => isRecording; adc => dac; while( true ) { oe => now; while( oe.nextMsg() ) { int record; string filename; oe.getInt() => record; oe.getString() => filename; if (record == 1 && record != isRecording) { 1 => isRecording; filename => w.wavFilename; adc =< dac; adc => w => dac; <<< "record: ", filename >>>; } if (record == 0 && record != isRecording) { 0 => isRecording; adc =< w =< dac; adc => dac; <<< "stopped." >>>; } } } thanks hope i,m sending this to the right email .

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How to Invert Phase of a Signal
by Rich Caloggero 27 May '08

27 May '08

OK, I'm a total beginner at all this dsp stuff, so forgive ... One way of subjectively "widening" a stereo image is to do the following: feed the left channel back to the right with a short delay, inverted; feed the right channel back to the left with a short delay, inverted; By inverted, I mean change the sign of each sample (assuming we have floating point samples). So now the newbie question: how do you invert the signal? I have the rest of the algorithm here: // note: sndbuf only seems to read in one channel of the source, so use one file for each channel of stereo source // sound file "r.wav" => string right; "l.wav" => string left; // the patch SndBuf l, r; DelayL dl, dr; l => dac.left; l => dl => dac.right; r => dac.right; r => dr => dac.left; .2::second => dl.max => dr.max; 15::ms => dl.delay => dr.delay; 0.4 => dl.gain => dr.gain; // load the file left => l.read; right => r.read; // time loop while( true ) { 1::second => now; } -- Rich

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Crashage
by Kassen 27 May '08

27 May '08

Look! A new way to crash; ------------------ <<<5 => int number>>>; ------------------- Sometimes one line is all it takes, use it to amaze your friends before the dev's hear about it! (works in the mini and terminal, both Windows and Linux, likely elsewhere as well). Will at to WiKi. Kas.

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length of Rhodey
by Atte André Jensen 27 May '08

27 May '08

Hi Is it possible to control the length of notes produced by Rhodey? -- peace, love & harmony Atte http://atte.dk | http://myspace.com/attejensen http://anagrammer.dk | http://modlys.dk

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Re: [chuck-users] Neural Nets in ChucK
by Inventor-66＠comcast.net 27 May '08

27 May '08

Kassen et al, I'm comfortable with neural nets, I like the feedforward type with backprop because that's the old standby of neural nets, works great as a pattern recognizer. I trained some ChucKian little-bitty neural nets to do some music processing and they seemed to work OK, though in my implementations they might have learned the "null pattern" of becoming a pass-thru netowrk. I'd enjoy having native neural net capability so I can do more work with more neurons as implementing them in the signal chain is expensive. Maybe one day ChucK will run on multiple processors and we could dedicate some of those processors to neural net processing. Anyways, nets are fun and if you've had some intro to them then all the better. Best wishes, Les (Inventor) http:://www.freedomodds.com/music/

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reverb with controllable length?
by Atte André Jensen 27 May '08

27 May '08

Hi Do we have a reverb with controllable length (~ room size)? The manual states only .mix as a parameter for JCRev, NRev and PRCRev... -- peace, love & harmony Atte http://atte.dk | http://myspace.com/attejensen http://anagrammer.dk | http://modlys.dk

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Re: [chuck-users] Neural Nets in ChucK
by Inventor-66＠comcast.net 27 May '08

27 May '08

Hi Kassen, I read about it in this previous message from this mailing list, see item 2. Maybe I'm confused. I'm easily amused and easily confused! Haha! Les Hi Nuno, This would be a great application for our new SMIRK toolkit (small music information retrieval toolkit for MIR in ChucK), soon to be up at http://smirk.cs.princeton.edu. This is a great example of a problem that could be easily solved with a machine learning algorithm, wherein you 1) Extract features from a training set of animal sounds 2) Use them to train a classifier (now available in chuck: kNN, adaboost) 3) extract features from the mic input 4) use the trained classifier to classify the new inputs You could start with playing with FFT, centroid, RMS, rolloff, and other standard features, then use whatever features end up capturing your idea of similarity the best. I'll send a notice to this list once everything is totally up. Cheers, Rebecca

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Re: [chuck-users] Analyse voice and choose animal
by Rebecca Fiebrink 25 May '08

25 May '08

Hi Nuno, This would be a great application for our new SMIRK toolkit (small music information retrieval toolkit for MIR in ChucK), soon to be up at http://smirk.cs.princeton.edu. This is a great example of a problem that could be easily solved with a machine learning algorithm, wherein you 1) Extract features from a training set of animal sounds 2) Use them to train a classifier (now available in chuck: kNN, adaboost) 3) extract features from the mic input 4) use the trained classifier to classify the new inputs You could start with playing with FFT, centroid, RMS, rolloff, and other standard features, then use whatever features end up capturing your idea of similarity the best. I'll send a notice to this list once everything is totally up. Cheers, Rebecca On 24-May-08, at 12:00 PM, chuck-users-request(a)lists.cs.Princeton.EDU wrote: > Send chuck-users mailing list submissions to > chuck-users@lis > Hi, > > Here's what I'd like to achieve: > > There's a pool of samples of animals. There's a microphone. Someone > talks to > the microphone, the voice is analyzed and, based on a given similarity > criteria, an animal is chosen. > > To be honest I don't know how this can be done and if it is easy or > hard. > Should I try using FFT to determine, say, the main frequency and > decide from > there? Which other criteria should I be able to compare? Any links or > samples to get me started? > > Thanks, > Nuno > >

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Feature ideas
by pibsid＠suomi24.fi 24 May '08

24 May '08

I'm learning some Python now and I really like it. Aside my dreams of a complete PyChucK ;) I'd really like to have duck typing in ChucK. http://en.wikipedia.org/wiki/Duck_typing Here's an example of what I mean: //Let's define the following UGens: SinOsc sin; TriOsc tri; Mandolin man; //A very simple function for setting the frequency to 300 Hz //If we want to use it with the UGens we've defined we'll need three different versions: fun void setFreq( SinOsc sinosc ){ 300.0 => sinosc.freq; } fun void setFreq( TriOsc triosc ){ 300.0 => triosc.freq; } fun void setFreq( StkInstrument stkinstrument ){ 300.0 => stkinstrument.freq; } //With duck typing we would only need one: fun void setFreq( ugen ){ 300.0 => ugen.freq; } //end of example What do you think, would this be a nice feature to have? Is there a reason why is ChucK is so strongly typed? Another feature that I'd like to see is score timing that supports tempo changes. With the basic timing scheme things go easily out of sync if you change the tempo on the fly. So I'm asking for global tempo control, score duration ( sdur ), score time ( stime ) and score now ( snow ). The type sdur would measure beats in quarternote durations. The type stime is an absolute measure of score duration. snow holds the current score time measured in quarternote beats. So calling: 12::whole => snow; would advance score time by 12 whole notes and take tempo changes that other shreds might make in to account. I know this might unnecessarily complicate ChucK and similar score timing scheme can already be made in ChucK as it is (using floats instead of sdurs). I'm posting to the list to get some discussion and feedback before wikifying these feature request. -Pyry Pakkanen ( Frostburn )

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Re: [chuck-users] Simulating environmental audio
by Inventor-66＠comcast.net 23 May '08

23 May '08

Hi Jeff, We recently did a group study on environmental sounds in the ChucK forum. There was wind, rain, and thunder plus ocean and birds. I'd suggest cruising on over to the ChucK forum and looking for a fairly recent topic in the listings, perhaps within the most recent few pages. Good Luck, and post again or to the forum if you can't find it - it *is* there! Les Hall (Inventor) http://www.freedomodds.com/music/

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I like 8bit Music.. was Re: I like alias-noise and 8bit
by Renato Fabbri 23 May '08

23 May '08

I understand that chuck can do way more than this, but It seems to me that chuck is a really good tool to make this kind of music: http://www.8bitpeoples.com/ (have to do some harvesting, but i found some interesting things there) Is anyone doings this things in chuck? ciao, renato 2008/5/22 Atte André Jensen <atte.jensen(a)gmail.com>: > Kassen wrote: > > Here you go; This example should be quite clear and suitable for extending >> for your own purposes, I think, but if I'm wrong please do shout. >> > > Thanks, I tried your code and it works just great! > > > -- > peace, love & harmony > Atte > > http://atte.dk | http://myspace.com/attejensen > http://anagrammer.dk | http://modlys.dk > _______________________________________________ > chuck-users mailing list > chuck-users(a)lists.cs.princeton.edu > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users >

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Simulating environmental audio
by Jeff Smith 22 May '08

22 May '08

I have a research project for which I need a variety of environmental audio streams, but for a number of reasons, I want to use purely synthesized sounds rather than just using pre-recorded tracks and sample-based simulation. I'm wondering if anybody in the ChucK community has any convincing environmental patches that they'd be willing to share. Almost any environments will do, so long as they're evocative of a place. Wind, rain, leaves in the trees, crickets chirping, waterfalls, waves on a beach - those are all fairly obvious examples of natural environments. I'm also interested in urban settings as well: traffic, stadium crowds, murmuring theater audiences, applause, industrial machinery... In addition to complete environments, good simulated sound effects that can be used as elements in an environment would also be useful: a car horn, closing door, breaking glass. I'm hoping that such synthetic effects will have parameters that can be adjusted to modify the character of the synthesized signal. For example, I have a "footsteps in the hallway" patch I've been playing with that can be adjusted to sound like footsteps in gravel or footsteps in grass, on sand, etc. (Mine isn't very good yet, so if you happen to have a good footsteps simulation, I'd love to compare yours with mine.) There are lots of environmental sounds that I haven't even mentioned, too, so if you have something you'd be willing to share, I'd love to hear from you. And maybe, if there's interest, I'll put together an archive of them to share with anyone else who's interested. Thanks -- Jeff Smith Computer Science Dept. University of Saskatchewan

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I like alias-noise and 8bit
by Atte André Jensen 22 May '08

22 May '08

Hi I'd like to resample a 44100 signal to something like 10K *and* hear the alias noise. Also I'd like to resample to lower bitdepth, something like 8 or 6 bit. 1) How it that most efficiently done with chuck? 2) I event thought it might be possible for me to implement this as a real UGen. My plan would be to start from one of the simple UGens (gain), and expand/modify from there, but before even looking into the chuck source, is there any documentation about doing this? Should I expect this to be more effective in implenenting in chuck-code, and if so about how much? Also. supposed I actually succed in making something that works, could it be included in future chuck-releases? -- peace, love & harmony Atte http://atte.dk | http://myspace.com/attejensen http://anagrammer.dk | http://modlys.dk

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ChucK linux requirements issue
by Kassen 22 May '08

22 May '08

Dear list (and devs/ admins), The ChucK download page ( http://chuck.cs.princeton.edu/release/ ) doesn't mention that on Linux ChucK requires a 32 bit system (and not 64, right now). I strongly suspect this to be the cause of confusion/segfaulting here; http://electro-music.com/forum/viewtopic.php?t=26414 (though I may be wrong) I would recommend putting this "on the packaging" so we can go on to new and innovative ways of seg-faulting and being confused. In case I'm wrong; do we have a Fedora-expert who might be able to help Flies there? Yours, Kas.

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miniAudicle compile errors on Linux / 64studio
by Oliver Oli 21 May '08

21 May '08

Hi, I tried to compile miniAudicle on 64studio / Linux with wxwindgets 2.6. Any idea what's wrong with my setup? :~/Desktop/apps/miniAudicle-0.1.3.8$ make linux-jack make -f makefile.jack make[1]: Entering directory `/home/oli/Desktop/apps/miniAudicle-0.1.3.8' gcc -o wxw/mAPreferencesWindow.o -D__LINUX_ALSA__ -D__LINUX__ -D__MA_WXWIDGETS__ `wx-config --cppflags` -O3 -c -D__CK_SNDFILE_NATIVE__ -Ichuck/src -Iwxw -I/home/oli/Desktop/apps/miniAudicle-0.1.3.8 wxw/mAPreferencesWindow.cpp wxw/mAPreferencesWindow.cpp: In member function 'void mAPreferencesWindow::LoadGUIToMiniAudicleAndPreferences()': wxw/mAPreferencesWindow.cpp:831: error: cast from 'void*' to 'int' loses precision wxw/mAPreferencesWindow.cpp:840: error: cast from 'void*' to 'int' loses precision wxw/mAPreferencesWindow.cpp:849: error: cast from 'void*' to 'int' loses precision wxw/mAPreferencesWindow.cpp:858: error: cast from 'void*' to 'int' loses precision wxw/mAPreferencesWindow.cpp:867: error: cast from 'void*' to 'int' loses precision wxw/mAPreferencesWindow.cpp:876: error: cast from 'void*' to 'int' loses precision make[1]: *** [wxw/mAPreferencesWindow.o] Error 1 make[1]: Leaving directory `/home/oli/Desktop/apps/miniAudicle-0.1.3.8' make: [linux-jack] Error 2 (ignored)

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more minor Mini stuff (Linux)
by Kassen 20 May '08

20 May '08

When [ctrl]+[n]-ing¹ up a new file under Linux (windows is fine) the cursor isn't placed in the new file's window. In the interest of speedy keyboard-based workflow I'd like it to be. Yours, Kas. ¹ok, that's probably the limit to what can be verbed...

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osc to keyboard
by Alpha Core 19 May '08

19 May '08

hello Ive been working on triggering Osc by the use of the keyboard and im still a having trouble I read the kb.ck file in the hid folder to figure out how it triggered and output the keys so i came up with the below syntax. // setting up the keyboard to trigger Osc // this should trigger a middle c tone when A key is pressed { if (msg.is ButtonDown()) and if (msg.my_keynumber = 65 then SinOsc s => Dac; 261 => s.freq; 1::second => now } it still giving me errors ? even when i running the kb.ck file in chuck any help would be great thanks Gabriel --------------------------------- Be a better pen pal. Text or chat with friends inside Yahoo! Mail. See how.

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Re: [chuck-users] granular music recommendations?
by Scot Gresham-Lancaster 19 May '08

19 May '08

> I would suggest taking some time to check out Curtis Roads¹ work. > http://www.asphodel.com/artists/view.php?Id=52&SessionID=573c139b4831aaeac9… > > He has been using and refining grunular synthesis techniques for decades now. > To really drill down into this area also, check out his book, ³Microsounds² on > MIT press. It is the definitive text on granular synthesis theory and > technique. > http://mitpress.mit.edu/catalog/item/default.asp?ttype=2&tid=10389 > > Scot Gresham-Lancaster > http://scot.greshamlancaster.com

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Mini font resize bug (minor issue)
by Kassen 18 May '08

18 May '08

Dear fellow ChucKists (particularly Spencer), Some time ago I set the font of the Mini (latest version, ALSA, Linux, in this case) to have a huge size so I could easily demo something to a friend of mine. Now, I had to set it back and while the font got smaller immediately the cursor was still at the old (huge) height and so was the space between the lines. Re-starting the Mini fixed this issue. I'm not sure what the current best place to archive such bugs in the Mini is so sending it here. Yours, Kas.

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Postdoc with PLOrk
by dan trueman 16 May '08

16 May '08

>>>>> Postdoctoral Position with the Princeton Laptop Orchestra (PLOrK) The Princeton University Department of Music invites applications for a 12-month post-doctoral appointment (July 1, 2008-June 30, 2009) with the Princeton Laptop Orchestra (PLOrk; for more information about PLOrk, visit plork.cs.princeton.edu). The position, under the supervision of two members of the faculty from the Departments of Music and Computer Science, and funded by a one-time grant from the MacArthur Foundation, entails: 1. Co-teaching of graduate seminar on music technology in the fall semester 2. Co-teaching of the joint PLOrk undergraduate courses (MUS 314/316) in the spring semester 3. Assist faculty with the development of new PLOrk technologies, focusing on both hardware and software development. 4. Composition of new work for PLOrk 5. Assist with outside artists on PLOrk compositions, aiding and advising on the composition of new works 6. Involvement with PLOrk performances, both on and off campus, assisting with the organization and production of concerts. Essential Qualifications Ph.D. in Music or related field, completed by starting date. Preferred Qualifications The ideal candidate will have experience with: performing and composing with real-time hardware and software audio systems; programing in both ChucK and Max/MSP languages; networking in musical environments; the design and fabrication of audio/user-interface hardware; studio management and ensemble direction. To Apply, complete the online application at https://jobs.princeton.edu/ Requisition Number 0800282 Proposed Start Date 07-01-2008 End Date, if a Term Appointment 06-30-2009 July 1, 2008 is preferred start date. Position is open until qualified candidate found. >>>>>

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help! unix commands from chuck...
by mike clemow 12 May '08

12 May '08

Okay, folks... I have a big show tomorrow at my school and I can't figure out how to run terminal commands from chuck. also, the chuck.cs.princeton.edu site is down. can anyone remember how/help me out? ;-) -mike -- http://semiotech.org

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choice examples
by Kassen 11 May '08

11 May '08

Fellow ChucKists; For those not keeping a eye on the WiKi; recently some really nice and inspiring projects have been uploaded by the PLORK people, I just noticed. Good stuff, this, and worth a look. http://wiki.cs.princeton.edu/index.php/PLOrk_spring2008#Final_Projects Yours, Kas.

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4 channels output
by Atte André Jensen 10 May '08

10 May '08

Hi I'd like to address 4 outputs under linux. Currently my soundcard has only 2 channels out. So before I rush out and buy something I'd like to know: can chuck can handle multiple outputs? -- peace, love & harmony Atte http://atte.dk | http://myspace.com/attejensen http://anagrammer.dk | http://modlys.dk

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Bay Area Computer Music Technology Group @ UCSC with David Cope and Peter Elsea - Sunday May 11
by Noah Thorp 09 May '08

09 May '08

Bay Area Computer Music Technology Group (BArCMuT) Sunday afternoon presentations by David Cope and Peter Elsea Sunday, May 11, 2008 at 1:00 PM Music Building @ University of California, Santa Cruz, CA 95064 RSVP: http://electronicmusic.meetup.com/152/calendar/7516169/ Thank you to David Cope and Peter Elsea for hosting the Bay Area Computer Music Technology Group (BArCMuT) for a Sunday afternoon at University of Santa Cruz! This Sunday's presentations: - David Cope will discuss and demonstrate his work with his computer program Experiments in Musical Intelligence. This will include a world premiere of a work by Emmy-Bach never before heard. - Peter Elsea will give a tour of the facilities and a presentation on recent work using Max/MSP for algorithmic composition with visualizations. If you are not familiar with David Cope's work, it represents a landmark moment in computer creativity (similar to Kurzweil's AARON application in the visual sphere). Cope's Experiments in Musical Intelligence set the bar for generative music by analyzing scores and writing new pieces in the style of the composer analyzed. If the turing test was a musical one, experiments in musical intelligence would be likely to pass the test. Those who encounter this work are often excited or even frightened by its implications. I encourage you to come and engage in this important work directly. You can listen to realizations of Cope's experiments in musical intelligence scores here (listen to "After Bach", "After Beethoven", etc. - there might be a lag before playing): http://arts.ucsc.edu/faculty/cope/mp3page.htm Peter Elsea's presentations will give us a window into this frequent computer music community contributor's latest works. It will be exciting to see his new approaches to visualization and algorithmic composition and also get a sense of the UCSC studios he stewards. All the best, Noah Thorp Organizer Bay Area Computer Music Technology Group (BArCMuT) DIRECTIONS UCSC is not very google maps friendly. Here is the lat/lon location of the music building: http://maps.google.com/maps/ms?ie=UTF8&hl=en&msa=0&msid=1044280959749593153… Here are the directions from UCSC: http://maps.ucsc.edu/cdmusic.html There will be a machine dispensing parking permits for $2. The music center is the concrete complex at the far end of the parking lot. Go all the way to the plaza overlooking the bay, and look left for the building entrance. There will be signs to the proper room. BIOS DAVID COPE ( http://arts.ucsc.edu/faculty/cope/index.html ), Professor Emeritus of Music at UC Santa Cruz, teaches in the annual Workshop in Algorithmic Computer Music (WACM) held in June-July at UC Santa Cruz. Cope's books on modern music include New Directions in Music (seventh edition), Techniques of the Contemporary Composer, and New Music Notation. His books on the intersection of music and computer science include Computers and Musical Style, Experiments in Musical Intelligence, The Algorithmic Composer, Virtual Music, Computer Models of Musical Creativity, and Hidden Structure (available through most online book sellers) and describe the computer program Experiments in Musical Intelligence which he created in 1981. Recordings of his music appear on Centaur, Smithsonian Folkways, Opus One, and Vienna Modern Masters and include a wide diversity of works, from large ensembles to soloists with electronic and computer-generated tape. PETER ELSEA ( http://arts.ucsc.edu/EMS/Music/PQE/More_PQE.html ) is the director of the UCSC Electronic Music Program. He is known world-wide for his "Lobjects" software for the Max/MSP music programming environment, and his tutorials for that language are in use at most major electronic music institutions. Google reports more than 1000 links to his internet articles on music technology, which have been on line since 1994. In addition to his work in composition and synthesis, he has been for some years exploring the combination of sound and light using high speed computers. Part of his visual collaboration with Mesut Ozgen, "New Dimensions in Classical Guitar" (seen at UCSC in 2004) was recently presented in Istanbul.

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OSC reception not working
by Sciss 05 May '08

05 May '08

hi, i'm trying to send an OSC message from SuperCollider to chuck, which doesn't work. no matter what i do, the OscEvent seems never to be decoded... ChucK: OscRecv recv; 6449 => recv.port; recv.listen(); recv.event( "/test, i" ) @=> OscEvent oe; spork ~ pollOscEvent(); fun void pollOscEvent() { while ( true ) { oe => now; while( oe.nextMsg() ) { <<< "LALA" >>>; <<< oe.getInt() >>>; } } } SC: NetAddr( "127.0.0.1", 6449 ).sendMsg( "/test", 33 ); what am i doing wrong? i tried other ports without success... thanks, -sciss-

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