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

miniAudicle console monitor on OSX El Capitan
by Anthony Becker 09 Jun '16

09 Jun '16

Hi everyone, When I upgraded my MacBook to El Capitan last fall, I found some problems with running miniAudicle. Well, no worries, I found Spencer's Git repository and downloaded the ChucK 1.3.5.2 beta, and everything works again... ...well, everything except for one minor detail. If I try to resize my Console Monitor window, the window itself resizes, but the content remains at the original size of the window, and won't take advantage of the larger window area. I have since upgraded to the final version of ChucK 1.3.5.2 fromhttp://chuck.cs.princeton.edu/release/, but I still have the same issue with the console monitor. Is there a configuration option or some other way for me to fix this? Or will I just have to wait for a new version of ChucK to come out? Thanks! Anthony

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ChucK with RESTful APIs
by David MacDonald 06 Jun '16

06 Jun '16

Hi all, I'm new to ChucK and looking for a little advice. I'm currently working on a "podcast" bot which will generate new sounds/episodes nightly. I currently have a Ruby script organizing everything and handling the logistics of uploading the MP3 and updating the RSS feed. It runs asynchronously on a Raspberry Pi (Cron > Ruby > Chuck). Anyhow, I'd eventually like this little guy to be able to reach out on the web and have its sounds influenced by data it finds. So I was wondering if you all had any suggestions pulling things in from REST APIs like Twitter or news feeds or whatever. Is there a function for this in ChucK? Or would it be better to handle this stuff in Ruby and pass it to ChucK via a temporary text file or runtime arguments or something? Thanks, Dave

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Chuck Newbie Advice - please assist
by Stephi LaReine 31 May '16

31 May '16

Hi guys, As a newbie I desperately need some accurate advice on a project I have set up. I am currently using an idea I found on the Instructables forum called Illumaphone by Bonniee. see link > http://www.instructables.com/id/Illumaphone-Light-based-Electronic-Musical-… I wish to use two 'illumaphones' individually controlled by two arduinos so I can vary sounds. I am also using Magic Music Visuals and OBS which is linked to a microphone to allow speech to be converted into text in real time. The idea is that the illumaphones outputs will be sent from the main line output of a macbook but I don't need the speech to make a sound just to trigger words. I am concerned that I won't be able to merge the arduinos sonic output together and whether I will be able to run Magic Music Visuals at the same time. I am using a usb microphone. I am also looking for ways to change the waveforms envelopes and filters in the code and I would be very grateful for any assistance in this so it doesn't muck up the code Many thanks, hope you can help :) Stephi *Stephi LaReine // Fashion & Lifestyle Blogger * StephiLaReine.com // Twitter: @StephiLaReine <http://Twitter.com/stephilareine> Instagram: @StephiLaReine <http://instagram.com/stephilareine> // Bloglovin <https://www.bloglovin.com/blogs/stephi-lareine-12421965>

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Set adc sampling rate
by Guille Elias Alonso 15 May '16

15 May '16

Hi guys! I'm trying to make some analysis of the micro input and to do so I have to take my micro input with a sampling rate of 8000 Hz. I've checked my micro supports that (with chuck --probe) but in the doc I haven't found how to set the sampling rate of adc. Does someone know how to do that? Or does someone know where I can find some kind of API doc where everything is listed? In the ChucK language specification or in the Unit Generators Reference I cannot find much info about it. Thanks!Guille

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Re: [chuck-users] Set adc sampling rate
by Guille Elias Alonso 15 May '16

15 May '16

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Re: [chuck-users] Any search function in MiniAudicle
by Perry Cook 15 May '16

15 May '16

Lars Wrote: > Is there any search function in Mini audicle? > > Thanks! Within a file in the editor, standard <command>-F Find, replace, replace all, next, etc. work as with any text editor. Were you hoping for a more multi-file search functionality? PRC

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Mini audicle search function
by Lars Ullrich 14 May '16

14 May '16

Is there any search function in Mini audicle? Thanks!

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Re: [chuck-users] Set adc sampling rate
by Perry Cook 14 May '16

14 May '16

In miniAudicle, it’s in the Preferences window. In terminal, the --srate switch sets sample rate: > chuck --srate8000 MyChucK.ck But both ADC and DAC must run at same rate. AND there has to be supporting hardware there to run at that sample rate. So native Mac coreaudio won’t allow for 8k. You could use the —silent switch, but then you lose the real timebase because ChucK then just runs as fast as it possibly can. You could plug in an iMic or other USB audio device that does support 8k, then it would all work. Use > chuck --probe to find out what sample rates are available. PRC > Message: 2 > Date: Sat, 14 May 2016 17:40:06 +0200 > From: Guille Elias Alonso <guille_elias_alonso(a)hotmail.com> > To: "chuck-users(a)lists.cs.princeton.edu" > <chuck-users(a)lists.cs.princeton.edu> > Subject: [chuck-users] Set adc sampling rate > Message-ID: <DUB125-W53FA6DD2238309A38920E9B3750(a)phx.gbl> > Content-Type: text/plain; charset="iso-8859-1" > > Hi guys! > I'm trying to make some analysis of the micro input and to do so I have to take my micro input with a sampling rate of 8000 Hz. I've checked my micro supports that (with chuck --probe) but in the doc I haven't found how to set the sampling rate of adc. Does someone know how to do that? Or does someone know where I can find some kind of API doc where everything is listed? In the ChucK language specification or in the Unit Generators Reference I cannot find much info about it. > Thanks!Guille >

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Re: [chuck-users] Communicate with a C++ programme (Guille Elias Alonso)
by Perry Cook 13 May '16

13 May '16

It’s pretty old-school, but often my solution for this is to pipe text output of ChucK into stdin of the Cxx program in a terminal. You need to be sure to send to chout and not just use the <<< “PRINT THIS” >>>; form, because the latter prints to stderr, not stdout. Here’s a simple ChucK program that writes a random number to stdout every 16 ms. Below that is a very simple C program to read and report. You’d need to have your C++ program read from stdin and use the argument(s) accordingly. You’d invoke the whole thing like this: > chuck MyChucK.ck | myCProgram where myCProgram is your compiled C++ executable. // MyChucK.ck ChucK Program to write random numbers to stdout while (true) { 16::ms => now; chout <= Std.ftoa(Math.random2f(0.0,3.14159),4); // 4 decimal places chout <= "\n"; // newline chout.flush(); // be sure and do this!! } // END OF CHUCK PROGRAM TO WRITE FLOATS // myCProgram.c a C Program to read single floats from Stdin #include <stdlib.h> #include <stdio.h> #include <string.h> int main() { char inString[256]; float inVal; while (1) { fgets(inString,256,stdin); // read standard input inVal = atof(inString); // peel off float value inString[strlen(inString)-1] = 0; // kill the newline printf("Got it!! %s, %f\n", inString, inVal); // report!! } return 1; } // END C PROGRAM TO READ FLOATS > On May 10, 2016, at 2:09 PM, chuck-users-request(a)lists.cs.princeton.edu wrote: > > 1. Communicate with a C++ programme (Guille Elias Alonso) > 2. Re: Communicate with a C++ programme (Stephen D Beck) > 3. Re: Communicate with a C++ programme (Guille Elias Alonso) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 10 May 2016 22:53:48 +0200 > From: Guille Elias Alonso <guille_elias_alonso(a)hotmail.com> > To: "chuck-users(a)lists.cs.princeton.edu" > <chuck-users(a)lists.cs.princeton.edu> > Subject: [chuck-users] Communicate with a C++ programme > Message-ID: <DUB125-W7866DF5CBF0938708FB36CB3710(a)phx.gbl> > Content-Type: text/plain; charset="iso-8859-1" > > Hello guys, > I'm writing a programme that analyses the micro input and makes some actions according to the analysis. Everything about the analysis is written in Chuck. The analysis of the micro signal gives a single number every 16 ms, and this number has to be sent to the C++ programme but I don't know how I can connect the two parts. This application is highly time-sensitive so I need a fast way of communicating. > I had read about these OSC events but it seems it's only for Chuck programmes receiving input from the outside and I want just the opposite. I've also thought about some mechanism of shared memory between the Chuck programme and the C++ programme but I don't see anywhere some way of implementing that with Chuck. Do you have any ideas? > Thanks,Guillermo >

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ICLI 2016 - Registration open
by thor 12 May '16

12 May '16

3rd International Conference on Live Interfaces School of Media, Film and Music - University of Sussex, Brighton. Dates: June 28th - July 2nd, 2016. Website: www.liveinterfaces.org Registration is now open for the International Conference on Live Interfaces in Brighton this summer. This biennial conference brings together people working with live interfaces in the performing arts, including music, the visual arts, dance, puppetry, robotics or games. The conference scope is highly interdisciplinary but with a focus on interface technologies of expression in the area of performance. Topics of liveness, immediacy, presence (and tele-presence), mediation, collaboration and timing or flow are engaged with and questioned in order to gain a deeper understanding of the role contemporary media technologies play in human expression. The conference consists of paper presentations, performances, interactive installations, poster demonstrations, a doctoral colloquium and workshops. Works engaging with the principles and assumptions governing interaction design, including perspectives from art, philosophy, product design and engineering are specially invited. Keynotes: - Stuart Nolan (magician) - Kristina Andersen (instrument maker) - Roman Paska (puppeteer) Workshops: - Magnetic Resonator Piano (Andrew McPherson) - The halldorophone (Halldor Ulfarsson) - Sound and Space: Performing Music for Organ and Electronics (Lauren Redhead and Alistair Zaldua) - A Practical and Theoretical Introduction to Chaotic Musical Systems (Tristan Clutterbuck, Tom Mudd and Dario Sanfilippo) - Making High-Performance Embedded Instruments with Bela and Pure Data (Giulio Moro, Astrid Bin, Robert Jack, Christian Heinrichs and Andrew McPherson) - Distributed Agency in Performance (Paul Stapleton, Simon Waters, Owen Green and Nicholas Ward) - Interfacing the Txalaparta Workshop (Enrike Hurtado) The conference, including performances and installations, will take place at the newly renovated Attenborough Centre for the Creative Arts. We will publish final performance, installations and paper programme when closer in time. There is a doctoral colloquium on Wednesday 29th of June and a Brighton Modular Meet on Sunday, 3rd of July. We look forward to welcome you to the University of Sussex for the ICLI conference this summer. Best, Thor --- Thor Magnusson Department of Music School of Media, Film and Music University of Sussex http://www.sussex.ac.uk/profiles/164902 http://www.ixi-audio.net https://twitter.com/thormagnusson ---

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print absolute time in chuck
by Chiel ten Brinke 12 May '16

12 May '16

I would like to figure out the source of latency from chuck interacting with another application via OSC. To do that, I want to print timestamps of messages sent and received and compare these. But here's the thing: How do I print the absolute current time in chuck? The variable `now` only seems to hold the time from the start of the process.

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Communicate with a C++ programme
by Guille Elias Alonso 10 May '16

10 May '16

Hello guys, I'm writing a programme that analyses the micro input and makes some actions according to the analysis. Everything about the analysis is written in Chuck. The analysis of the micro signal gives a single number every 16 ms, and this number has to be sent to the C++ programme but I don't know how I can connect the two parts. This application is highly time-sensitive so I need a fast way of communicating. I had read about these OSC events but it seems it's only for Chuck programmes receiving input from the outside and I want just the opposite. I've also thought about some mechanism of shared memory between the Chuck programme and the C++ programme but I don't see anywhere some way of implementing that with Chuck. Do you have any ideas? Thanks,Guillermo

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OSC messages from a python-osc client are not picked up by ChucK server
by Chiel ten Brinke 23 Apr '16

23 Apr '16

I'm trying to set up OSC communication between chuck and python-osc. It appears that the messages we send from the python side do not arrive at the chuck side. All other combinations, i.e. python to python, chuck to chuck and chuck to python are working fine though. I'm running python 3.4.4 on windows 7. What could be going wrong here? Here are the four files with the client/server implementations I'm using for testing. ### chuck_client.py: OscSend xmit; xmit.setHost("localhost", 5005); <<<"Sending">>>; xmit.startMsg("/debug"); ### chuck_server.py: OscRecv orec; 5005 => orec.port; orec.listen(); orec.event("/debug") @=> OscEvent e; <<<"Waiting">>>; e => now; <<<"Received">>>; ### python_client.py: from pythonosc import osc_message_builder from pythonosc import udp_client client = udp_client.UDPClient('localhost', 5005) msg = osc_message_builder.OscMessageBuilder(address="/debug") msg = msg.build() print('Sending') client.send(msg) ### python_server.py: from pythonosc import dispatcher from pythonosc import osc_server dispatcher = dispatcher.Dispatcher() dispatcher.map("/debug", lambda _: print('Received')) print('Waiting') server = osc_server.ThreadingOSCUDPServer( ('localhost', 5005), dispatcher) print("Serving on {}".format(server.server_address)) server.serve_forever() This issue can also be viewed on github: https://github.com/ccrma/chuck/issues/54#issuecomment-213495106

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Seeking ChucK => programmer
by MediMuse 07 Mar '16

07 Mar '16

Seeking ChucK => programmer For bio-metric data Sonification project. Please state your interest in this effort and provide ChucK dev and/or UI history to: medimuse(a)alumni.stanford.edu

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Re: [chuck-users] MIDI devices (more)
by Perry Cook 03 Mar '16

03 Mar '16

You can also check the device name to make sure you’re opening what you want, or iterate through midi device numbers until you find the device you want. Something like: for(0 => int i; true ; i++){ if (!midin.open(i)) me.exit(); if (midin.name() == "Intern in") break; } I think there’s also a capability to open by Device name (as printed out by chuck —probe). I’ve never used it, but I think Spencer put it in fairly recently. PRC > On Mar 3, 2016, at 9:00 AM, chuck-users-request(a)lists.cs.princeton.edu wrote: > > Send chuck-users mailing list submissions to > chuck-users(a)lists.cs.princeton.edu > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users > or, via email, send a message with subject or body 'help' to > chuck-users-request(a)lists.cs.princeton.edu > > You can reach the person managing the list at > chuck-users-owner(a)lists.cs.princeton.edu > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of chuck-users digest..." > > > Today's Topics: > > 1. Re: not receiving midi messages (Daniel Chapiro) (Perry Cook) > 2. Re: not receiving midi messages (Daniel Chapiro) (Daniel Chapiro) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 2 Mar 2016 14:50:23 -0800 > From: Perry Cook <prc(a)CS.Princeton.EDU> > To: chuck-users(a)lists.cs.princeton.edu > Subject: Re: [chuck-users] not receiving midi messages (Daniel > Chapiro) > Message-ID: <CE790EAF-FEAB-45C7-A2A7-38648331B0AA(a)cs.princeton.edu> > Content-Type: text/plain; charset=utf-8 > > Whenever this happens to me, It almost invariable has to do with > some other MIDI device getting loaded and bumping the number > of the actual device I want around. Make sure you?ve only got one > MIDI device available, or if multiple, make sure that you?re explicitly > opening the one you want. miniAudicle will show the devices, and > also try running: > > chuck --probe > > in a terminal/shell/dosbox, and see what it prints out for MIDI devices. > > That?s my best guess. Also try another MIDI device, a basic keyboard > or other, and make sure messages from it are getting received. > > PRC > > >> On Mar 1, 2016, at 9:00 AM, chuck-users-request(a)lists.cs.princeton.edu wrote: >> >> Send chuck-users mailing list submissions to >> chuck-users(a)lists.cs.princeton.edu >> >> To subscribe or unsubscribe via the World Wide Web, visit >> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users >> or, via email, send a message with subject or body 'help' to >> chuck-users-request(a)lists.cs.princeton.edu >> >> You can reach the person managing the list at >> chuck-users-owner(a)lists.cs.princeton.edu >> >> When replying, please edit your Subject line so it is more specific >> than "Re: Contents of chuck-users digest..." >> >> >> Today's Topics: >> >> 1. not receiving midi messages (Daniel Chapiro) >> >> >> ---------------------------------------------------------------------- >> >> Message: 1 >> Date: Mon, 29 Feb 2016 18:03:48 -0800 >> From: Daniel Chapiro <dchapiro(a)gmail.com> >> To: ChucK Users Mailing List <chuck-users(a)lists.cs.princeton.edu> >> Subject: [chuck-users] not receiving midi messages >> Message-ID: <C3FE748A-D746-484F-B420-916DBDA98890(a)gmail.com> >> Content-Type: text/plain; charset="us-ascii" >> >> Hi - I have beeen using the same version of Chuck (1.3.5.2-beta-2) on OSX Lion (10.7.5) for over a year, without any changes or problems. However something strange happened, and I'm stuck: >> >> All versions of my Chuck-based software stopped working with my WX-5 (including those that I had frozen and worked fine) >> I tried the WX-5 with GB+Wivi, and it works fine, so I know the hardware is ok, and OSX is passing the midi events to the applications. >> As one more check, I ran "MIDI Monitor.app", and it reports correctly all the Note on/off and CC events I'm sending with the WX-5. >> So I tried MiniAudicle->File->examples->gomidi. It opens succesfully Midi dev 0, and then it blocks forever at min.recv(msg) ... >> >> Can anybody give me a suggestion of what could make Chuck not see the Midi events, or what I can try next? >> >> Thanks! >> Daniel >>

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Re: [chuck-users] not receiving midi messages (Daniel Chapiro)
by Perry Cook 02 Mar '16

02 Mar '16

Whenever this happens to me, It almost invariable has to do with some other MIDI device getting loaded and bumping the number of the actual device I want around. Make sure you’ve only got one MIDI device available, or if multiple, make sure that you’re explicitly opening the one you want. miniAudicle will show the devices, and also try running: chuck --probe in a terminal/shell/dosbox, and see what it prints out for MIDI devices. That’s my best guess. Also try another MIDI device, a basic keyboard or other, and make sure messages from it are getting received. PRC > On Mar 1, 2016, at 9:00 AM, chuck-users-request(a)lists.cs.princeton.edu wrote: > > Send chuck-users mailing list submissions to > chuck-users(a)lists.cs.princeton.edu > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users > or, via email, send a message with subject or body 'help' to > chuck-users-request(a)lists.cs.princeton.edu > > You can reach the person managing the list at > chuck-users-owner(a)lists.cs.princeton.edu > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of chuck-users digest..." > > > Today's Topics: > > 1. not receiving midi messages (Daniel Chapiro) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 29 Feb 2016 18:03:48 -0800 > From: Daniel Chapiro <dchapiro(a)gmail.com> > To: ChucK Users Mailing List <chuck-users(a)lists.cs.princeton.edu> > Subject: [chuck-users] not receiving midi messages > Message-ID: <C3FE748A-D746-484F-B420-916DBDA98890(a)gmail.com> > Content-Type: text/plain; charset="us-ascii" > > Hi - I have beeen using the same version of Chuck (1.3.5.2-beta-2) on OSX Lion (10.7.5) for over a year, without any changes or problems. However something strange happened, and I'm stuck: > > All versions of my Chuck-based software stopped working with my WX-5 (including those that I had frozen and worked fine) > I tried the WX-5 with GB+Wivi, and it works fine, so I know the hardware is ok, and OSX is passing the midi events to the applications. > As one more check, I ran "MIDI Monitor.app", and it reports correctly all the Note on/off and CC events I'm sending with the WX-5. > So I tried MiniAudicle->File->examples->gomidi. It opens succesfully Midi dev 0, and then it blocks forever at min.recv(msg) ... > > Can anybody give me a suggestion of what could make Chuck not see the Midi events, or what I can try next? > > Thanks! > Daniel >

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not receiving midi messages
by Daniel Chapiro 29 Feb '16

29 Feb '16

Hi - I have beeen using the same version of Chuck (1.3.5.2-beta-2) on OSX Lion (10.7.5) for over a year, without any changes or problems. However something strange happened, and I'm stuck: All versions of my Chuck-based software stopped working with my WX-5 (including those that I had frozen and worked fine) I tried the WX-5 with GB+Wivi, and it works fine, so I know the hardware is ok, and OSX is passing the midi events to the applications. As one more check, I ran "MIDI Monitor.app", and it reports correctly all the Note on/off and CC events I'm sending with the WX-5. So I tried MiniAudicle->File->examples->gomidi. It opens succesfully Midi dev 0, and then it blocks forever at min.recv(msg) ... Can anybody give me a suggestion of what could make Chuck not see the Midi events, or what I can try next? Thanks! Daniel

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Problems with qubes
by Luca Sangiacomo 19 Feb '16

19 Feb '16

Hi there, I'm having trouble installing chuck and with miniAudicle. I'm using Qubes os, so I'm running the code in a VM. miniAudicle can see the audio interfaces, but it freeze a couple of seconds after I start the chuck vm. Chuck doesn't output any sound and or warning. I have tried to compile with linux-pulse. Compiling with linux-alsa doesn't solve the problem. The sound is working fine (tested playing a wav by shell) Tnx.

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MOOC of interest to ChucK users: Machine Learning for Musicians and Artists
by Rebecca Fiebrink 03 Feb '16

03 Feb '16

Hi everyone! I am teaching a MOOC (online class) called "Machine learning for musicians and artists,” and it has just opened: https://www.kadenze.com/courses/machine-learning-for-musicians-and-artists/… <https://www.kadenze.com/courses/machine-learning-for-musicians-and-artists/…> This class grew out of work that I've done with a number of computer music composers and music technology students, many of whom are ChucK users, and I hope it will be helpful to you. If you’re interested in machine learning for building new musical instruments or other real-time creative interactions, please sign up. No prior machine learning knowledge or mathematical background is necessary. The course is probably most interesting for people who can already program in some environment, because it allows you to connect code you write in languages like ChucK to machine learning algorithms as well as sensors, other software and hardware, etc. But the class should still be accessible to people who don’t program. I’m thrilled to be joined by two guest lecturers, music technology researcher Baptiste Caramiaux and composer/instrument builder/performer Laetitia Sonami. You can watch the lectures and access all the course content for free, or pay a small monthly subscription to also submit & get feedback on assignments. (FYI many familiar ChucK faces have been involved in Kadenze, including Spencer Salazar and Perry Cook, and Perry has a sound synthesis class there as well.) Please share widely with interested friends/colleagues/students! Best, Rebecca

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Announcing MIDIFlower
by Gregory Newsome 07 Jan '16

07 Jan '16

Hi chuck-users, I’d like to announce the release of MIDIFlower, a lightweight MIDI input framework for ChucK. MIDIFlower listens for and routes incoming MIDI data to your ChucK instruments. It’s particularly useful for those who use ChucK with a MIDI controller. With MIDIFlower, you’ll focus more on your instrument code, and less (or not at all) on MIDI input boilerplate. https://github.com/GLN/MIDIFlower Feedback welcome! GLN — Gregory Lee Newsome Lecturer, Digital Composition Faculty of Music University of Toronto greg.newsome(a)utoronto.ca<mailto:greg.newsome@utoronto.ca> http://gregoryleenewsome.ca/

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ChucK, Audio, MIDI courses posted online
by John Ellinger 28 Dec '15

28 Dec '15

Hi All, I've posted courses I created and taught in the Carleton College Music Department before I retired in 2014. MUSC 101 - Music Fundamentals http://people.carleton.edu/~jellinge/m101s12/index.html The basic fundamentals of music in a web based format using the MiBAC MUSIC LESSON I and MUSIC LESSONS II I wrote during the 90's and 00's. Sadly the business closed in 2012 after 25 years. MUSC 108 - Intro to Music Technology http://people.carleton.edu/~jellinge/m108f13/index.html The focus of this course was learning to "play the computer" with attention to articulation, dynamics, phrasing, rhythmic accents that a performer would use. The first half of the course taught the raw language of MIDI and the format of Standard MIDI Files using Excel spreadsheets. Students used a utility program I wrote called MIDIDisplay that translated the Excel text into MIDI messages they can play and edit. There is also an Excel template for a SMF that, when filled in correctly and pasted into MIDIDisplay, will export the text as a Standard MIDI File. The second half of the course applied that MIDI background to creating a "human" MIDI performance using Apple's Logic 9. MUSC 208 - Computer Music and Sound http://people.carleton.edu/~jellinge/m208w14/index.html The focus of this course was the study of Computer Sound. The primary programs were ChucK and Octave with a little OSC and Processing GUI connected to ChucK at the end. The lectures were geared to teaching students enough about synthesis methods, a little filter theory, and a lot of controlling ChucK with laptop keyboards, gamepads, joysticks, and Golftrak string controllers. There were three student project, and individual research presentation, and two laptop trio performances (7 groups of three students each). There are a lot of code examples designed to give the students tools to create their projects. I deliberately inserted the code as images to prevent students from copying and pasting. I felt typing the code forced them to slow down, think and ask questions. The course was taught as a 110 minute lab every Tuesday and Thursday. My DIY Modular Synth http://people.carleton.edu/~jellinge/mysynth.html This is an analog Modular Synth I recently built using schematics mostly from Electronotes by Bernie Hutchins. http://electronotes.netfirms.com/ Special thanks to Dan Trueman, Ge Wang, Spencer Salazar, Perry Cook, Steve Beck, Roger Dannenberg and the many other people I met at the 2012 SLEO conference at LSU who patiently answered my questions when I was just getting started with ChucK. That enabled me to coach Carlork the Carleton Laptop Orchestra in 2013 and create MUSC 208 which I taught twice in 2013 and 2014. Comments, questions welcome. John John Ellinger Winter 2016 Visiting Instructor in Computer Science CS 312 Audio Programming in C++ Senior Lecturer in Music, Retired Carleton College http://http://people.carleton.edu/~jellinge/

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input to UGen?
by Michael Heuer 07 Dec '15

07 Dec '15

Is it possible to query whether a UGen has an input or not? If anything has been chucked to it, in other words. Thanks, michael

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kb hid problems
by David Loberg Code 07 Dec '15

07 Dec '15

Yes, we tried KBHit. That works fine. Still can't resolve the problem with using Hid. As I said, it recognizes the keyboard device exists (i.e. will connect to it), but doesn't recognize that it is producing any data. Perry Cook prc at CS.Princeton.EDU Sun Nov 1 13:21:53 EST 2015Next message: [chuck-users] keyboard failMessages sorted by: [ date ] [ thread ] [ subject ] [ author ]This is really odd, because I have two Yosemite machines that work fine with your posted code. I’m trying to figure which of my Macs I want to subject to the ElCap upgrade, and will test on that and report. For fun, have you tried the other non-hid keyboard device example? This one suffers from not working on Windows, but uses a non-hid path without requiring device number, etc. // computer keyboard input via terminal KBHit kb; // time-loop while( true ) { // wait on event kb => now; // loop through 1 or more keys while( kb.more() ) { // get and print key... kb.getchar() => int c; <<< "ascii:", c >>>; } } davd David Loberg Code School of Music Western Michigan University Kalamazoo, MI 49008

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Mesh2D for Windows
by Perry Cook 27 Nov '15

27 Nov '15

Calling all Windows Hax@rs. I have discovered (thanks to someone in the online Physics-Based DSP course) that the Mesh2D chugin that’s distributed with the Windows installer is different from that shipped for Mac. (Haven’t checked Linux yet). Unacceptable behaviors include myMesh.x and myMesh.y aren’t recognized. Fix (maybe): myMesh.nx and myMesh.ny seem to be implemented instead. but the worst bug is that myMesh.noteOn won’t accept any arguments, and won’t make sound without them. Has anyone encountered this? (I think I recall some traffic on this list about it a while ago). And has anyone fixed it? And can they hook us up with a compiled executable Mesh2D.chug that we can distribute to people who need it? Thanks, PRC

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Re: [chuck-users] all pass filters (Michael Heuer)
by Perry Cook 25 Nov '15

25 Nov '15

ChucK definitely has all you need! ChucK is “DSP Complete” (like Turing Complete for computational engines/languages), because since ChucK allows for single-sample connections and manipulations, then we don’t provide lots of flavors of things. You can build from primitives. Like a RISC computer. Some things you mentioned are available: First and 2nd order AllPass are available via the PoleZero (1st) and BiQuad (2nd) UGens. You just need to set the coefficients explicitly. Tapped Delay lines can be implemented using multiple Delay elements. Yea it wastes some memory, but not too much, and works just great: // Taps.ck Tapped Delay via separate delays // by Perry R. Cook, 2015 // Caution about adc => dac!!! Use headphones Delay taps[10]; Pan2 pans[10]; for (int i; i < 10; i++) { adc => taps[i] => pans[i] => dac; Math.random2f(-1.0,1.0) => pans[i].pan; // stereo early reflections Math.random2(20,200) => int tapMs; // random path lengths tapMs :: ms => taps[i].max => taps[i].delay; 10.0/tapMs => taps[i].gain; // 1/distance gain } 10*second => now; AllPass CombFilter can be accomplished with a single delay line and one Gain connecting input to mix with output, and another Gain mixing output back into input. You might want to be cautious about the extra sample gained when feeding back, but for long delays, it doesn’t really make much difference. If you strictly want a true allpass comb, then one extra sample of delay from inlet to your main delay, feeding the fbGain back into the 2nd delay line rather than the first, should take care of it. For reverb purposes, this super simple AllPassComb might do: // Simple AllPassComb.ck by Perry R. Cook, 2015 // NOTE: this has one sample different delay forward vs. back // Easily fixed, but really doesn’t much matter for long enough delays public class AllPassComb extends Chubgraph { inlet => Delay dl => outlet; outlet => Gain fb => dl; inlet => Gain ff => outlet; 0.5 => coeff; 50::ms => delay; fun float coeff(float c) { -c => fb.gain; c => ff.gain; return c; } fun float coeff() { return fb.gain(); } fun dur delay(dur d) { d => dl.max => dl.delay; } } // Noise n => AllPassComb ap => dac; adc => AllPassComb ap => dac; // caution here, use headphones!!! 10*second => now; END

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