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

Re: [chuck-users] playing SndBuf backward
by Perry Cook 12 Feb '20

12 Feb '20

You can set the .pos to wherever you like, and set the .rate to a negative number. The sample will happily play backward to zero and stick there (unless you have .loop set). PRC Sent from my iPad > On Feb 12, 2020, 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: => now (herman verbaeten) > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 11 Feb 2020 18:11:09 +0000 > From: herman verbaeten <hverb54(a)hotmail.com> > To: ChucK Users Mailing List <chuck-users(a)lists.cs.princeton.edu> > Subject: Re: [chuck-users] => now > Message-ID: > <AM0PR08MB389035F6190B1D2C897C097BA5180(a)AM0PR08MB3890.eurprd08.prod.outlook.com> > > Content-Type: text/plain; charset="iso-8859-1" > > Thanks again Mario, > > I have another question: > Can you recommend a procedure to address individual samples of a wave-file you read into the SndBuf. > I discovered a way to play a part of a wave file starting at a certain point using ".pos". > I also wonder if there's a way to play it backwards (reverse). > > Cheers, > > herman > > > > _______________________________

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Error in book "Programming for Musicians and digital artists by Ge Wang" ?
by herman verbaeten 12 Feb '20

12 Feb '20

Hi, I was looking in your book and copied listing 4.3 " Playing a sound file backward" But it didn't work. Hopefully i did everything correctly. It did perform the first (forward) part but during the reverse part i heard nothing. Can you please help me.... Kind regards, Herman // copy Listing 4.3 Playing a sound file backward // from Programming for Musicians and digital artists by Ge Wang me.sourceDir() + "sample.wav" => string filename; if( me.args() ) me.arg(0) => filename; // the patch SndBuf mySound => dac; // load the file in buf filename => mySound.read; mySound.samples() => int numSamples; 0 => mySound.pos; // this was ok numSamples::samp => now; numSamples => mySound.pos; // This was not heard. Athough the program stayed in VM. -1.0 => mySound.rate; numSamples::samp => now;

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=> now
by herman verbaeten 11 Feb '20

11 Feb '20

Hi, I'm trying to understand what's really happening in chuck. I thought i did untill i saw some exemples of midi. Normaly you can only feed time or duration into now ( e.g. 10::ms => now) But in case you are awaiting a midi-in message you write : MidiIn min; while (true) { min => now } So in fact do you assign the message to time? Total confusion! Thanks for your answer. Herman

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Create a pause of e.g. 2 seconds between notes or samples to be played
by herman verbaeten 08 Feb '20

08 Feb '20

Hi, I've only recentely started studiing ChucK and i'm looking for an easy way to integrate a pause between notes to be played in a "while()" loop. Could someone tell me in what direction to look for a solution? thanks in advance! Herman

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ADSR and gradually shift pan from left to right and back
by herman verbaeten 06 Feb '20

06 Feb '20

Hello , Thanks a lot for your help. I still have some general questions and some about the program that follows: 1. Where can i find a chuck editor with the possibility to find words and replace them (all) and that also gives the colors for reserved words etc. 2. Is there a way to debug line per line to discover logical errors? 3. i discovered by accident that sometimes i can use "p.puf" but on other occasions i have to write "p.buf()" why is this? 4. in the program hereby, is there a way to have the pan do it's job independantely from the note-envelope-flow? to go faster or slower? 5. When i run this program it does what i want but i can't figure out why it says 2 times "p.pan = 1.000000" and 2 times "p.pan= -1.000000" (see below) Thanks !! Herman ---------------------------------------------------- program ------------------------------------------------------------------ // sound file me.sourceDir() + "wavefile.wav" => string filename; if( me.args() ) me.arg(0) => filename; <<<me.sourceDir()>>>; // the patch SndBuf buf => ADSR e => Pan2 p => dac; // set attack time, decay time, release time and pause time dur attack; dur decay ; dur release; dur pauze; 12::ms => attack ; 90::ms => decay ; 100::ms => release ; 5::ms => pauze ; // load file in buf filename => buf.read; // set gain .5 => buf.gain; // set a, d, s and r e.set( attack, decay, 0.001, release ); // switch is needed to stay in the "else" step untill p.pan = -1 0 => int switch; // begin pan extreme left -1 => p.pan; // time loop while( true ) { Math.random2(0,900000) => buf.pos; Math.random2f(1.0,1.2) => buf.rate; if( p.pan() < 1.0 && switch == 0) { p.pan() + .10 => p.pan; <<<"if p.pan = ",p.pan()>>>; } else { p.pan() - .10 => p.pan; <<<"else p.pan = ", p.pan()>>>; 1 => switch; if (p.pan() == -1) { 0 => switch; } } // key on - start attack e.keyOn(); attack + decay => dur ontime; ontime => now; // key off - start release e.keyOff(); // advance time by releasetime + pausetime release + pauze => now; } ---------------------------------------------------------console result print---------------------------------------------------- if p.pan = -0.900000 if p.pan = -0.800000 if p.pan = -0.700000 if p.pan = -0.600000 if p.pan = -0.500000 if p.pan = -0.400000 if p.pan = -0.300000 if p.pan = -0.200000 if p.pan = -0.100000 if p.pan = -0.000000 if p.pan = 0.100000 if p.pan = 0.200000 if p.pan = 0.300000 if p.pan = 0.400000 if p.pan = 0.500000 if p.pan = 0.600000 if p.pan = 0.700000 if p.pan = 0.800000 if p.pan = 0.900000 if p.pan = 1.000000 if p.pan = 1.000000 else p.pan = 0.900000 else p.pan = 0.800000 else p.pan = 0.700000 else p.pan = 0.600000 else p.pan = 0.500000 else p.pan = 0.400000 else p.pan = 0.300000 else p.pan = 0.200000 else p.pan = 0.100000 else p.pan = 0.000000 else p.pan = -0.100000 else p.pan = -0.200000 else p.pan = -0.300000 else p.pan = -0.400000 else p.pan = -0.500000 else p.pan = -0.600000 else p.pan = -0.700000 else p.pan = -0.800000 else p.pan = -0.900000 else p.pan = -1.000000 else p.pan = -1.000000 if p.pan = -0.900000 if p.pan = -0.800000 if p.pan = -0.700000 if p.pan = -0.600000 if p.pan = -0.500000 if p.pan = -0.400000

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Re: [chuck-users] Multichannel Mono Output using ChucK (Matthew.Noone)
by Perry Cook 30 Jan '20

30 Jan '20

The trick here is you also have to tell ChucK to be 4 channels. From the command line: chuck -c8 YourFile.ck depending on what your —probe shows, you might even have to specify which dac (and adc) to use, especially if they’re different device numbers or channel numbers. Also, might need to up the buffer size to avoid clicking, especially for lots of channels. Examp: chuck -c8 -bufsize2048 -in2 --dac1 --adc0 YourFile.ck Hope this helps, PRC PS: If you’re using MiniAudicle, then you need to do some menu stuff to pick output/input devices, and numchannels as well. > On Jan 30, 2020, at 8:02 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. Multichannel Mono Output using ChucK (Matthew.Noone) > 2. Re: Multichannel Mono Output using ChucK (Michael Heuer) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Thu, 30 Jan 2020 15:43:06 +0000 > From: "Matthew.Noone" <Matthew.Noone(a)ul.ie> > To: "chuck-users-request(a)lists.cs.princeton.edu" > <chuck-users-request(a)lists.cs.princeton.edu>, > "chuck-users(a)lists.cs.princeton.edu" > <chuck-users(a)lists.cs.princeton.edu> > Subject: [chuck-users] Multichannel Mono Output using ChucK > Message-ID: > <DB3PR0302MB332457E5B33EB57BB1603BDAFC040(a)DB3PR0302MB3324.eurprd03.prod.outlook.com> > > Content-Type: text/plain; charset="iso-8859-1" > > Hi all, > > I am trying to get multichannel output (to four speakers) using ChucK. > > I'm running on a Mac and using a Scarlett 18i8. > > I've tried running this test code. > > SinOsc s0 => dac.chan(0); > > SinOsc s1 => dac.chan(1); > > SinOsc s2 => dac.chan(2); > > SinOsc s3 => dac.chan(3); > > > 3::second => now; > > But I get this error. > > chuck](VM): NullPointerException: (UGen link) on line[3] in shred[id=1:MULTI] > > Any ideas? > With thanks, > Matthew > > > > Dr. Matthew James Noone > Sarode Artist & Irish Research Council Postdoctoral Fellow > Irish World Academy of Music and Dance > University of Limerick > >

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Classes to effectively use FluidSynth microtonally in ChucK
by Forrest Cahoon 30 Jan '20

30 Jan '20

Some time ago, I extended the FluidSynth chugin with hooks into libfluidsynth's tuning API. Once I started working with some more sophisticated soundfonts (such as those at https://sites.google.com/site/soundfonts4u/) I found a problem: it turns out that, the way libfluidsynth tuning works, the sample for the assigned-to note number is retuned to the pitch to which it is assigned, instead of using a sample which meant to be close to the desired pitch. So I wrote a set of ChucK classes so that I could just specify the note I want and let ChucK decide which MIDI note number to assign it to. If this is possibly of interest to you, check out my code at https://github.com/forrcaho/ChucK-code/tree/master/fluidsynth .

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Multichannel Mono Output using ChucK
by Matthew.Noone 30 Jan '20

30 Jan '20

Hi all, I am trying to get multichannel output (to four speakers) using ChucK. I'm running on a Mac and using a Scarlett 18i8. I've tried running this test code. SinOsc s0 => dac.chan(0); SinOsc s1 => dac.chan(1); SinOsc s2 => dac.chan(2); SinOsc s3 => dac.chan(3); 3::second => now; But I get this error. chuck](VM): NullPointerException: (UGen link) on line[3] in shred[id=1:MULTI] Any ideas? With thanks, Matthew Dr. Matthew James Noone Sarode Artist & Irish Research Council Postdoctoral Fellow Irish World Academy of Music and Dance University of Limerick

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New Electroacoustic Album in SuperCollider; ChucK; Csound; NI Reaktor; AudioMulch & 600 aprox VST`s.
by maria p cruz 24 Jan '20

24 Jan '20

My husband, new Electroacoustic Album in SuperCollider; ChucK; Csound; NI Reaktor; AudioMulch & 600 aprox VST`s. : https://joseignacioquevedogomezxenakis2.bandcamp.com/releases Maria

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Re: [chuck-users] Float to Int
by Perry Cook 21 Jan '20

21 Jan '20

We also added Std.ftoi(x) to the language a while back (at 1.3.2.0). It’s much clearer to read, and more obvious as to what’s going on and why, than the casting notation. To round, just add 0.5 to x in the function arg. so: > Std.ftoi(0.4*myBuf.samples()+0.5) => myBuf.pos; would set your play pointer to the 40% point in the sound buffer. Prc Sent from my iPhone > 1. Conversion float to int using SndBuf (M?che?l ? Cath?in) > > 40.0 => float pctPosInit; > pctPosInit/100*myBuf.samples() => myBuf.pos; > > > This throws the error argument types don't match. > I'm not seeing how to convert the float to an int here. > Thanks for your help! > > Micheal >

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