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

Command line arguments
by Stuart McDonald 12 Feb '14

12 Feb '14

I am entertaining an aspiration to send an arbitrary list of wav files to chuck to process, so that a user could drag and drop files into a directory, and wrap a call to chuck in a script that takes the result of ls and passes the files to chuck as command line arguments. The closest I've found on Google is this post: https://lists.cs.princeton.edu/pipermail/chuck-users/2011-January/005932.ht… much changed since then? It's not essential as I could contrive the calling script to compile a .ck file containing the wav files ahead of time and pass that to chuck, but I figured I'd check in case there are more seemly options. Thanks Stuart

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Re: [chuck-users] machine.add issues (Amy Crawford)
by Perry R Cook 11 Feb '14

11 Feb '14

Amy, Judging from the C: in your post, I gather you are using Windows? If so, we had a bug with ChucK wherein it was interpreting the colon as the usual marker for arguments to a program. So it was interpreting that path as a ChucK file named "C" with an argument of all the path after the colon. Spencer made a patch for that and released it as an update. Now ChucK ignores a colon so early (meaning that we can't have single letter ChucK files, but that would be pretty goofy anyway). Make sure you have the newest version of ChucK from the download site: http://chuck.stanford.edu/release/files/exe/chuck-1.3.3.0.msi You may have to remove previous versions to do a clean install. Spencer?? PRC 1. new to chuck having machine.add issues (Amy Crawford) 2. Re: new to chuck having machine.add issues (Michael Heuer) 3. Re: new to chuck having machine.add issues (Mois?s Gabriel Cachay Tello)

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new to chuck having machine.add issues
by Amy Crawford 11 Feb '14

11 Feb '14

Hi there! I took the coursera course for chuck programming and all was going well until I go to use machine.add() to make my score and all instruments concurrent. for some reason it reads [C]: no such file or directory I added my files to another computer and the same exact thing occurred. every time I add the shred and Any time I use Machine.add() in any other programs the same thing occurs even though i am using me.dir("/myfile.ck") I can't seem to make any of my files concurrent to one another because its not working. Any help is appreciated greatly!! Thanks! Amy

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Listener
by Philipp Blume 07 Feb '14

07 Feb '14

I am looking to implement a listener into my (very simple) ChucK program. I want to operate a bank of virtual sliders that send their position to ChucK. In what program/application can I build such a slider, and where in the ChucK API can I read up on listeners? I don't yet know my way around the documentation, though I do have the Kapur, Cook, Salazar, & Wang text which is wonderful. Thanks in advance! Philipp Blume

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ChucK style guide?
by Federico Lopez 07 Feb '14

07 Feb '14

Hi, I can't find a ChucK style guide. I am missing some link? thanks, federico.

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Re: [chuck-users] Matrix of Impulse Generators
by Perry R Cook 05 Feb '14

05 Feb '14

Yep, having that resource allocation and connection to the dac inside your infinite loop is the culprit. In fact, almost everything in that function is static initialization, so chould be moved outside the while(1) context. This fixes it for real: fun void iGen(int i1, int j1) { Euclid(i1,j1,a1,b1) + Euclid(i1,j1,a2,b2) => float dist; <<< dist >>>; SinOsc s => ADSR e => dac; e.set(35::ms, 8::ms, .1, 200::ms); Math.pow(0.65,(dist)) => s.gain; i1*x + j1*y => s.freq; while(true) { e.keyOn(); (440)::ms => now; e.keyOff(); (440*Math.pow(1.2,dist))::ms => now; } } ----- Original Message ----- 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. Matrix of Impulse Generators (Philipp Blume) 2. Re: Matrix of Impulse Generators (Stefan Blixt)

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Re: [chuck-users] chuck-users Digest, Vol 103, Issue 5
by Philipp Blume 05 Feb '14

05 Feb '14

Thanks, Stefan! That did take care of my problem! I didn't even trigger a new note, I simply added the line e=<dac; at the end of my function iGen. On Wed, Feb 5, 2014 at 2:57 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. Matrix of Impulse Generators (Philipp Blume) > 2. Re: Matrix of Impulse Generators (Stefan Blixt) > > > ---------- Forwarded message ---------- > From: Philipp Blume <pgbluster(a)gmail.com> > To: chuck-users(a)lists.cs.princeton.edu > Cc: > Date: Tue, 4 Feb 2014 18:11:56 -0600 > Subject: [chuck-users] Matrix of Impulse Generators > Dear all, > > Question from a rank ChucK beginner > > There's something about envelopes or gain or shreduling that I don't > understand. > > I created a Cartesian matrix of impulse generators, whose frequencies are > given as mx+ny {x,y btw -3 and 3) where the gain & 'tempo' of each > generator is correlated with its distance from a line segment (a1,b1 - > a2,b2) - later on I will be manipulating x,y,a1,b1,a2, and b2. > > This code runs well for a while, but within a few seconds or minutes it > starts to get overwhelmed. The death is both spectacular and quite moving, > but how do I keep it within bounds so it sounds perpetually like it does in > the first 5-10 seconds? > > 550 => float x; > 440 => float y; > 3 => float a1; > 0 => float b1; > 0 => float a2; > -2 => float b2; > > fun void iGen(int i1, int j1) { > while(true) { > Euclid(i1,j1,a1,b1) + Euclid(i1,j1,a2,b2) => float dist; > <<< dist >>>; > SinOsc s => ADSR e => dac; > e.set(35::ms, 8::ms, .1, 200::ms); > Math.pow(0.65,(dist)) => s.gain; > i1*x + j1*y => s.freq; > e.keyOn(); > (440)::ms => now; > e.keyOff(); > (440*Math.pow(1.2,dist))::ms => now; > } > } > > fun float Euclid(float p, float q, float r, float s) { > return Math.sqrt(Math.pow((p-r),2) + Math.pow((q-s),2)); > } > > for(-3 => int i; i<4; i++) { > for (-3 => int j; j<4; j++) { > if (i != 0 && j != 0) { > spork ~ iGen(i,j); > } > } > } > > while (x != y) { > 500::ms=>now; > } > > -- > Philipp Blume > > > ---------- Forwarded message ---------- > From: Stefan Blixt <stefan.blixt(a)gmail.com> > To: ChucK Users Mailing List <chuck-users(a)lists.cs.princeton.edu> > Cc: > Date: Wed, 5 Feb 2014 09:57:45 +0100 > Subject: Re: [chuck-users] Matrix of Impulse Generators > I sometimes get this wrong, but I think that this line: > > SinOsc s => ADSR e => dac; > > will make new connections between s, e and dac each time it's run in the > while loop - possibly creating new instances of SinOsc and ADSR each time. > Since you never disconnect from dac, this means an increasing load that may > explain the breakdown. > > > Since you want some release on the ADSR, you could make a second shred > function that deals with playing a single note, which could make sure to > disconnect e from dac one the release time has passed. Trigger the note > playing shred from your iGen function. > > /Stefan > > > On Wed, Feb 5, 2014 at 1:11 AM, Philipp Blume <pgbluster(a)gmail.com> wrote: > >> Dear all, >> >> Question from a rank ChucK beginner >> >> There's something about envelopes or gain or shreduling that I don't >> understand. >> >> I created a Cartesian matrix of impulse generators, whose frequencies are >> given as mx+ny {x,y btw -3 and 3) where the gain & 'tempo' of each >> generator is correlated with its distance from a line segment (a1,b1 - >> a2,b2) - later on I will be manipulating x,y,a1,b1,a2, and b2. >> >> This code runs well for a while, but within a few seconds or minutes it >> starts to get overwhelmed. The death is both spectacular and quite moving, >> but how do I keep it within bounds so it sounds perpetually like it does in >> the first 5-10 seconds? >> >> 550 => float x; >> 440 => float y; >> 3 => float a1; >> 0 => float b1; >> 0 => float a2; >> -2 => float b2; >> >> fun void iGen(int i1, int j1) { >> while(true) { >> Euclid(i1,j1,a1,b1) + Euclid(i1,j1,a2,b2) => float dist; >> <<< dist >>>; >> SinOsc s => ADSR e => dac; >> e.set(35::ms, 8::ms, .1, 200::ms); >> Math.pow(0.65,(dist)) => s.gain; >> i1*x + j1*y => s.freq; >> e.keyOn(); >> (440)::ms => now; >> e.keyOff(); >> (440*Math.pow(1.2,dist))::ms => now; >> } >> } >> >> fun float Euclid(float p, float q, float r, float s) { >> return Math.sqrt(Math.pow((p-r),2) + Math.pow((q-s),2)); >> } >> >> for(-3 => int i; i<4; i++) { >> for (-3 => int j; j<4; j++) { >> if (i != 0 && j != 0) { >> spork ~ iGen(i,j); >> } >> } >> } >> >> while (x != y) { >> 500::ms=>now; >> } >> >> -- >> Philipp Blume >> >> _______________________________________________ >> chuck-users mailing list >> chuck-users(a)lists.cs.princeton.edu >> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users >> >> > > > -- > Release me, insect, or I will destroy the Cosmos! > > _______________________________________________ > chuck-users mailing list > chuck-users(a)lists.cs.princeton.edu > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users > > -- Philipp Blume

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Matrix of Impulse Generators
by Philipp Blume 05 Feb '14

05 Feb '14

Dear all, Question from a rank ChucK beginner There's something about envelopes or gain or shreduling that I don't understand. I created a Cartesian matrix of impulse generators, whose frequencies are given as mx+ny {x,y btw -3 and 3) where the gain & 'tempo' of each generator is correlated with its distance from a line segment (a1,b1 - a2,b2) - later on I will be manipulating x,y,a1,b1,a2, and b2. This code runs well for a while, but within a few seconds or minutes it starts to get overwhelmed. The death is both spectacular and quite moving, but how do I keep it within bounds so it sounds perpetually like it does in the first 5-10 seconds? 550 => float x; 440 => float y; 3 => float a1; 0 => float b1; 0 => float a2; -2 => float b2; fun void iGen(int i1, int j1) { while(true) { Euclid(i1,j1,a1,b1) + Euclid(i1,j1,a2,b2) => float dist; <<< dist >>>; SinOsc s => ADSR e => dac; e.set(35::ms, 8::ms, .1, 200::ms); Math.pow(0.65,(dist)) => s.gain; i1*x + j1*y => s.freq; e.keyOn(); (440)::ms => now; e.keyOff(); (440*Math.pow(1.2,dist))::ms => now; } } fun float Euclid(float p, float q, float r, float s) { return Math.sqrt(Math.pow((p-r),2) + Math.pow((q-s),2)); } for(-3 => int i; i<4; i++) { for (-3 => int j; j<4; j++) { if (i != 0 && j != 0) { spork ~ iGen(i,j); } } } while (x != y) { 500::ms=>now; } -- Philipp Blume

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Re: [chuck-users] assigning a Blit array (George Locke)
by Zacko Belsch 03 Feb '14

03 Feb '14

I'm not sure whether the following is relevant or not. Looking at the chuck source code (in ugen_stk.h), it appears the common superclass of BlitSaw and BlitSquare is BLT, not Blit. Would what you tried work if you used BLT for your common array instead of Blit? Bob H

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Re: [chuck-users] Dynamic Arrays (George Locke)
by Perry R Cook 03 Feb '14

03 Feb '14

5. how do you resize an object array? (George Locke) Here's something that should be useful. (from the .pdf ChucK Manual, under Dynamic Arrays, there's more there about it) [64, 65, 60, 59] @=> int notes[]; notes << 58; // notes is [64, 65, 60, 59, 58] notes << 60; // notes is [64, 65, 60, 59, 58, 60] notes.popBack(); // [64, 65, 60, 59, 58] notes << 64 << 65 << 60; // [64, 65, 60, 59, 58, 64, 65, 60]

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how do you resize an object array?
by George Locke 02 Feb '14

02 Feb '14

This code works: SinOsc pls[0]; <<< "sinosc", pls.size() >>>; for (0 @=> int i; i < pls.size(); i++) { <<< i >>>; <<< pls[i].freq() >>>; } But this code fails: 2 => int siz; SinOsc pls[0]; siz => pls.size; <<< "sinosc", pls.size() >>>; for (0 @=> int i; i < pls.size(); i++) { <<< i >>>; <<< pls[i].freq() >>>; } It gives a run-time error: "[chuck](VM): NullPointerException: shred[id=1:untitled], PC=[53]" error. How do I dynamically resize an array of objects? (I just reinstalled miniAudicle today. running on Windows 7.) Thanks, George Locke

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Re: [chuck-users] assigning a Blit array (George Locke)
by Perry R Cook 02 Feb '14

02 Feb '14

Not exactly sure why this is failing. Also tried declaring Blit osc[], but nope. Here's a fix for now, assigning all elements individually: BlitSquare pls[10]; BlitSaw saw[10]; Blit osc[10]; if (myVariable) { for (0 => int i; i < pls.cap(); i++) pls[i] => osc[i]; } else { for (0 => int i; i < pls.cap(); i++) saw[i] => osc[i]; } 1. how do I assign a Blit array with a BlitSquare array? (George Locke)

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Re: [chuck-users] how do I assign a Blit array with a BlitSquare array?
by Casper Schipper 02 Feb '14

02 Feb '14

Hello George, You have an interesting point there. I wanted to suggest to you that you wrap your BlitSaw in an extension of a Chubgraph class, but that also doesn't work! It appears to me that Chuck in general doesn't let you assign arrays from subclasses to superclasses: a bit of a surprise indeed! For example : class ClassA { float v; fun float value() { return v; } } class ClassB extends ClassA { fun float value() { return v * 2; } } ClassA myObjectA; ClassB myObjectB; //ChucK allows: myObjectB @=> myObjectA; //but does not for arrays :-( ClassA myObjectArrayA[10]; ClassB myObjectArrayB[10]; myObjectArrayB @=> myObjectArrayA; // gives error Of course there are less pretty ways of achieving what you need, probably by just switching the routing of the UGens : BlitSaw blitSaw[10]; BlitSquare blitSquare[10]; Gain output; // => or the rest of your patch for (int i;i<blitSaw.size();i++) { blitSquare[i] !=> output; blitSaw[i] => output; } for (int i;i<blitSaw.size();i++) { blitSaw[i] => output; blitSquare[i] => output; } Happy chucking! Casper Casper Schipper casper.schipper(a)gmail.com www.casperschipper.nl +316 52322590 On 2 feb. 2014, at 18:00, 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. how do I assign a Blit array with a BlitSquare array? > (George Locke) > > From: George Locke <george.locke.maxmsp(a)gmail.com> > Subject: [chuck-users] how do I assign a Blit array with a BlitSquare array? > Date: 2 februari 2014 17:18:13 CET > To: ChucK Users Mailing List <chuck-users(a)lists.cs.princeton.edu> > Reply-To: ChucK Users Mailing List <chuck-users(a)lists.cs.princeton.edu> > > > Hi, > > I have a class that I want to use either (multiple) BlitSquare or BlitSaw oscillators, where i can switch between them during performance. I thought the easiest way would be to have a single Blit array that holds either, but apparently I can't do this: > > BlitSquare pls[10]; > BlitSaw saw[10]; > Blit osc[10]; > if (choosePulse) { > pls @=> osc; > } else { > saw @=> osc; > } > > Any suggestions? > > How is the Blit type ever to be used if not in this way? > > (My chuck experience is limited, but I am an experienced programmer.) > > Regards, > George > > > _______________________________________________ > chuck-users mailing list > chuck-users(a)lists.cs.princeton.edu > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users

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how do I assign a Blit array with a BlitSquare array?
by George Locke 02 Feb '14

02 Feb '14

Hi, I have a class that I want to use either (multiple) BlitSquare or BlitSaw oscillators, where i can switch between them during performance. I thought the easiest way would be to have a single Blit array that holds either, but apparently I can't do this: BlitSquare pls[10]; BlitSaw saw[10]; Blit osc[10]; if (choosePulse) { pls @=> osc; } else { saw @=> osc; } Any suggestions? How is the Blit type ever to be used if not in this way? (My chuck experience is limited, but I am an experienced programmer.) Regards, George

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Re: [chuck-users] Raspberry pi and ChucK and performance
by Stuart McDonald 30 Jan '14

30 Jan '14

For anyone heading pi-wards in future, I tried out Perry's advice and found dropping to 32khz as well as smarter resource management means I can run three concurrent SndBufs (with pans) and a three effect fx chain (including a mighty JCReverb!) simultaneously. It's modest, but enough for me to achieve the ambient driftyness I wanted. YMMV! Cheers Stuart From: Perry Cook <prc(a)CS.Princeton.EDU> > Thoughts from the battlefield: > > One nice thing about the Pi is that it supports many > sample rates. So if you can run at 22.05k or even > 16k or less, then you'll get much more bang for > your buck. > > Also, you might look into using WvIn (non looping) > or WavLoop (looping), rather than SndBuf, because > I think I remember that these are slightly more > efficient. > > Look into using some long delay lines (non-interpolating), > with feedback. These can really fatten up a texture without > requiring much CPU. > > Also be judicious about your efx, some will take more > CPU than others. > > Finally, if a wave is not playing sound, unchuck it at the > end of the chain, and it won't use any CPU while muted. > Keeping track of what's actually sounding, and muting > the rest (by unchuck) can really help. > > Prc >

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Re: [chuck-users] chuck-users Digest, Vol 102, Issue 6
by Anthony Bowyer-Lowe 28 Jan '14

28 Jan '14

I don't know if it's an option for you, Leonard, but in this situation and with these requirements I'd personally be tempted to modify the ChucK source to support something like a --capture command line option which records all output and then auto-closes the audio output file when all shreds have finished. > The problem here is that the duration has to be known beforehand. The > batch conversion can't know how long these scripts are, and the > scripts themselves shouldn't be rigged to put that information > somewhere else. I'm amazed how difficult that appears to realize. I > went through the docs and I can find nothing of use. >

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Fwd: Automated batch conversion of ck files to WAV
by Leonard Ritter 23 Jan '14

23 Jan '14

Hi there, I wrote this to Ge Wang on Twitter before but he's not been there since October, so I thought I'd better write here. I've used ChucK a few years ago and had quite some fun with it. I would like to use it as part of the game we are currently developing. The goal is to allow sounds to be customized to individual installations of the game, where they would then be played back by OpenAL to provide for positional 3D audio. As part of my prototyping, I wanted to write a simple Python script that is able to batch convert a stack of ck files to WAV, ideally sample precise (no leading or trailing silence). I thought that rec.ck would be perfect for achieving that but it seems I can't figure out a way to have recording end precisely when the main script is done playing, instead of recording indefinitely and waiting for abortion via the Ctrl+C key. Is there such a method? I'd be very thankful for advice. Cheers, Leonard -- Leonard und Sylvia Ritter, Duangle, GbR Ritter Altpieschen 9, 01127 Dresden Leonard.Ritter(a)duangle.com www.duangle.com Geschäftsführung: Sylvia Ritter, Leonard Ritter

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Re: [chuck-users] Raspberry pi and ChucK and performance
by Perry Cook 11 Jan '14

11 Jan '14

Thoughts from the battlefield: One nice thing about the Pi is that it supports many sample rates. So if you can run at 22.05k or even 16k or less, then you'll get much more bang for your buck. Also, you might look into using WvIn (non looping) or WavLoop (looping), rather than SndBuf, because I think I remember that these are slightly more efficient. Look into using some long delay lines (non-interpolating), with feedback. These can really fatten up a texture without requiring much CPU. Also be judicious about your efx, some will take more CPU than others. Finally, if a wave is not playing sound, unchuck it at the end of the chain, and it won't use any CPU while muted. Keeping track of what's actually sounding, and muting the rest (by unchuck) can really help. Prc Sent from my iPad :-) > On Jan 11, 2014, at 3:03 PM, chuck-users-request(a)lists.cs.princeton.edu wrote: > > Raspberry pi and ChucK and performance

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Raspberry pi and ChucK and performance
by Stuart McDonald 11 Jan '14

11 Jan '14

I've written a ChucK script to concurrently instantiate samples with their own effects chains with the aim of creating a kind of kaleidoscopic music box that randomly plays filtered longish samples (say up to two minutes). The box bit is intended to be a raspberry pi. Running on a pi the program maxes out at two concurrent samples and a modest effects chain for each. Ideally I'd prefer to double or even triple that so clearly I need to scale back my resource-intensive intentions, along with attempting to improve the pi's performance (overclocking, for example). There are concrete steps to take on both these fronts, but I have two concerns I'd be keen to get advice on: 1. Is ChucK the best electronic music platform to be doing processor-intensive tasks on a low-power processor? 2. Is building a processor-intensive composition on a raspberry pi (as opposed to building a hardware controller-related application) bordering on folly? I realise the second question is more open-ended and philosophical, but I'd be interested to hear other perspectives :) Many thanks Stuart

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Serial/Arduino & ChucK example
by Alan Brooker 06 Jan '14

06 Jan '14

Hi there I am using ChucK 1.3.2.0 (Chimera) with miniAudicle 1.3.0a on Ubuntu 12.04- I think the latest version can communicate with Arduino directly? Cant seem to find any examples so any advice or example code would be much appreciated. I am trying to build a simple step sequencer with *x5 potentiometer*s that send values to an arduino board and then into ChucK hopefully. Was hoping I could do this without OSC- thanks for helping this noob! Al

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language feature requests
by Michael Heuer 03 Jan '14

03 Jan '14

All, I added several language feature requests and bugs to the issue tracker on github at https://github.com/spencersalazar/chuck/issues Allow => from a UGen into a field/parameter #34 Add namespaces and import statements #33 Add constrain and lerp methods to Std or Math #32 Add constructors to class definitions #31 Order of class definitions in a file matters sometimes #30 Allow a class to implement more than one interface or extend more than one class #29 Add abstract and final class and method modifiers #28 now returns 0.0 from Chugen #27 These nudge the ChucK language towards Java in a lot of ways, perhaps not surprising given my background. I'm curious to know what others think. Cheers, michael

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New ChuGins for the new year!
by Joel Matthys 31 Dec '13

31 Dec '13

I've been hard at work developing new ChuGins, and I have them all working well, with proper documentation. I've only built them on Linux, but since I used the template, I assume they'll build just fine on Mac or Windows too. Here are my new ChuGins: - PitchTrack, a monophonic pitch tracker with good speed and accuracy even at low frequencies - GVerb, a quality stereo reverb with many adjustable parameters - Mesh2D, my favorite STK instrument that somehow never made it into ChucK. It's a great physical model of struck glass or metal plates. - Spectacle, an FFT-based spectral delay and EQ. These are all adapted from other sources, mostly RTcmix. You can clone the repo at https://github.com/jwmatthys/chugins Let me know if you have any questions! Joel

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function for creating 8 bit waveforms from expressions
by Ronni Montoya 31 Dec '13

31 Dec '13

Hi list, i been reading a paper that talks about an approach for generating sound that uses functions to directly shape waveforms. The function receives "expresions" as argument and it generates different kind of 8 bit waveforms from the expressions. An expression can look like this: f(t) = t * ( t >> 8 * ( t >>15 | t >> 8) & 20 | ( t >>19) * 5 >> t | t >> 3)) The paper describes the algorithm in this way: algorithm 1 : Construction of an 8-bit waveform of 8000Hz sample rate: The function has 2 inputs : Input 1) a functional expresion f(t) Input 2 ) time durations in seconds (d) Output: the waveform of an audio signal with seconds duration for t = 1 to d8000 do if f(t) ==NaN then q(t) <-- 0 else q(t) <-- mod(f(t)), 256) end if s(t) <-- 2 q(t)/255 - 1 end for If its possible to implement this approach for generating sound in chuck?? cheers R.

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KBHit events
by Manuel Bärenz 26 Dec '13

26 Dec '13

Hello again, I also wanted to demonstrate a simple sequencer prototype that lets me record a file and then plays it back to me. I've come this far: KBHit kb; me.sourceDir() + "/bum.wav" => string filename; adc => WvOut b => blackhole; filename => b.wavFilename; kb => now; b.closeFile(); SndBuf buf => dac; filename => buf.read; kb => now; But strangely, the program doesn't wait for the second kb event, but exits directly after the first key that I hit. Any ideas what I'm doing wrong? Best, Manuel

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chugin tutorial or docs?
by Joel Matthys 25 Dec '13

25 Dec '13

I'm trying to implement a good pitch tracker as a ChuGin. Is there any kind of tutorial or walk-through that anyone has done? A few questions: - Is it possible to create a UAna ChuGin or must it be a UGen? - How do you suggest implementing an FFT-based instrument which uses 1024 or 2048 sample frames for analysis? - Besides the CCRMA paper and the source code, is there any documentation of ChuGin programming? Thanks! Joel

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