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

order aspect when fun sharing things in main
by 2g 09 Aug '07

09 Aug '07

thanks to things taught via this list am now with isthisokay.ck like this: SinOsc s1 => Gain g1 => dac; SinOsc s2 => g1; SinOsc s3 => PRCRev g3 => dac.left; SinOsc s4 => PRCRev g4 => dac.right; .25 => g1.gain; .25 => g3.gain; .25 => g4.gain; fun void ri() { while(true) { 300::ms => now; s2.freq() * Std.rand2(16, 32) / 16.0 => s3.freq; } } fun void ga() { while(true) { 330::ms => now; s2.freq() * Std.rand2(16, 32) / 16.0 => s4.freq; } } //let's try sporking it spork ~ ri(); spork ~ ga(); while( true ) { Std.rand2(32, 64) * 27.5 / 32.0 => s1.freq; 1000::ms => now; s1.freq() * Std.rand2(8, 16) / 4.0 => s2.freq; 250::ms => now; } am happy with the result it gives but began to wonder why s2.freq() in the fun doesn't result into an error when activated funs are sporked before the main loops starts ... so s2.freq() might have nothing when funs want to claculate things maybe SinOsc s3 => PRCRev g3 => dac.left; SinOsc s4 => PRCRev g4 => dac.right; gives some sort of default for .freq? then at the beginning am having s3,s4 making non-overtone but random note that has nothing to do with 27.5hz? tia -- 2g http://micro.ispretty.com

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NullPointerException
by eduard aylon 07 Aug '07

07 Aug '07

Hi list, I am trying to make a list of objects where each object has references to other objects, but I am not succeeding and I get a NullPointerException. The piece of code below may represent what I am trying to do. class object { Std.rand2f(0., 1.) => float f_; } class Item extends object { 2 => int size_; object item_[size_]; fun void print() { for( 0=>int i; i<size_; i++ ) <<< "item [",i,"]", item_[i].f_>>>; } <<<"----------------------------------------------">>>; <<<"calling print from within class definition">>>; <<<"----------------------------------------------">>>; print(); } 4 => int n; Item l[n]; // no problems up until here <<<"----------------------------------------------">>>; <<<"calling print from outside class definition">>>; <<<"----------------------------------------------">>>; for( 0=>int i; i<n; i++ ) l[i].print(); //offending line After execution I get: [chuck](VM): NullPointerException: shred[id=1:test.ck], PC=[37] Excuse me if it's too obvious, but I can't see why it rises the null pointer exception. Any ideas? thanks in advance, eduard

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Re: [chuck-users] can there be many ::ms in while?
by Stephen Ball 07 Aug '07

07 Aug '07

just to chime in here - i'm VERY new to programming. how do you create this kind of concurrency? if, say, you wanted to create two while loops, but wanted them to run "side-by-side", but looping at different speeds, how would you do it?for example:while (true){ do something; 100::ms => now;}andwhile (true) {do something else; 150::ms => now;}cheers> Date: Fri, 3 Aug 2007 05:53:57 +0900> From: electriclightheads(a)gmail.com> To: chuck-users(a)lists.cs.princeton.edu> Subject: Re: [chuck-users] can there be many ::ms in while?> > oh> maybe in the second way> am just looping the 1st while only?> > maybe it was a bit too early for me to ask things on the list> (only i can do is modifying the tut)> i thought> 100::ms => now;> was something like "100msec later do ..." or "every 100msec do ..."> but i happened to find that in () expression of while> > mmm> i'll go through a bit more ahead in the manual> yes> then i'll find Blit-UGen waiting for me?> > On 8/2/07, Martin Ahnelöv <operagasten(a)gmail.com> wrote:> > tor 2007-08-02 klockan 07:34 +0900 skrev 2g:> > > have just started coding on chuck> > > was looking for way to let s1 have 3 overtones> > > flying around him> > > i know it should be something other than rand2f to handle integers> > > but my q is about ::ms in while> > >> > > i wonder which one of these are the right way to use them> > > i thought the latter might be safe but it seems to give one never> > > changing long note> > > and maybe only one another is floating around> > > but none of them give me an error> > >> > >> > > style one:> > >> > > SinOsc s1 => PRCRev g => dac;> > > SinOsc s2 => g;> > > SinOsc s3 => g;> > > SinOsc s4 => g;> > > .25 => g.gain => g.mix;> > > while( true ) {> > > 500::ms => now;> > > Std.rand2f(30.0, 220.0) => s1.freq;> > > 170::ms => now;> > > s1.freq() * Std.rand2f(8.0, 16.0) / 8.0 => s2.freq;> > > 75::ms => now;> > > s2.freq() * Std.rand2f(16.0, 32.0) / 16.0 => s3.freq;> > > 111::ms => now;> > > s2.freq() * Std.rand2f(16.0, 32.0) / 16.0 => s4.freq;> > > }> > >> > >> > > style two:> > >> > > SinOsc s1 => PRCRev g => dac;> > > SinOsc s2 => g;> > > SinOsc s3 => g;> > > SinOsc s4 => g;> > > .25 => g.gain => g.mix;> > > while( true ) {> > > 200::ms => now;> > > Std.rand2f(30.0, 220.0) => s1.freq;> > > }> > > while( true ) {> > > 170::ms => now;> > > s1.freq() * Std.rand2f(8, 16) / 4.0 => s2.freq;> > > }> > > while( true ) {> > > 75::ms => now;> > > s2.freq() * Std.rand2f(16, 32) / 8.0 => s3.freq;> > > }> > > while( true ) {> > > 111::ms => now;> > > s2.freq() * Std.rand2f(16, 32) / 8.0 => s4.freq;> > > }> > >> >> > Okey, I'm gonna teach you something about while-loops. A while loop will> > do whatever is in the brackets behind the statements until the> > expression inside the parenthesis is false. When it is false, it> > continues to the next thing after the close bracket (in your case the> > next while-loop).> >> > illustrated with chuck-code:> >> > 1 => int i;> >> > while (i < 10) {> > <<<i>>>; //print i> > i + 1 => i;> > }> > <<<"done">>>;> >> > Notice how it prints the numbers 1 to 9, and finally "done"?> >> > Now, look at your second example. Does the expression never return> > false? No, because you have hard coded "true" inside it.> >> > So, your first one should work as you want it, and your second won't.> > (Yes, you can advance time how many times as you want in whatever> > code-context you want)> >> > By the way, have you checked out the Blit-UGen? I think that one might> > satisfy your needs.> >> >> > Hope that helps,> > Gasten> >> > _______________________________________________> > chuck-users mailing list> > chuck-users(a)lists.cs.princeton.edu> > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users> >> > > -- > 2g> http://micro.ispretty.com> _______________________________________________> chuck-users mailing list> chuck-users(a)lists.cs.princeton.edu> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users _________________________________________________________________ Try Live.com - your fast, personalised homepage with all the things you care about in one place. http://www.live.com/?mkt=en-gb

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Bug; Delay floating point denormalisation
by Kassen 07 Aug '07

07 Aug '07

Fellow Chuckists, "Delay" definately has a floatingpoint denormalisation issue (well, either Delay or Envelope). My feedbackloop went something like this; soundsource => Delay del => dac; del => Envelope feedback => del: .9 => feedback.gain; In this form it has to loop for quite a while before the issue shows up in cpu usage and it will probably be most evident in situations where other Ugens are also using floatingpoint opperations. A smaller value then .9 for the gain should speed up the phenomenon. In my case my "soundsource" had filled the Delay with sound, then went quiet, after some time the CPU meter rose fairly sharply, because of the controll using HID that I had over the feedback envelope I could make the CPU usage go down again with one switch, meaning I'm absolutely positive it was this loop that was to blame. This is on Windows, using the unnoficial ASIO build that Philippe posted, delay time was around one second or so, neither of which should matter that much. Kas.

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kbpiano
by Stephen Sinclair 06 Aug '07

06 Aug '07

Hi, I've been making a few Chuck synths lately and have been wanting a way to play them straight from the keyboard instead of having to attach a MIDI device. I used to do this all the time with FastTracker back in the DOS-ages. Anyways, of course Chuck can get keyboard input, so all that was missing was a mapping from the keyboard keys to MIDI note numbers. Attached is a Chuck script that reads the keyboard and then generates Events containing a note number. These are available through a public class, so a separate Chuck script can wait for the events and spork notes. Note that it's not quite an up-to-scratch implementation of polyphony, since there is only a single event structure that will get overwritten by the next key press. Maybe I'll work on that next... (perhaps using an array to store extra notes, but some timing calculations will need to be made..) Oh yes, and this is designed for a US keyboard, but feel free to change the keymap. I figured it out from the kb.ck output. So anyways, enjoy. :) ps., run concurrently: $ chuck kbpiano.ck kbpiano_example.ck Steve

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Recommended books?
by Carl-Gustaf Harroch 05 Aug '07

05 Aug '07

Chuckist, Are there any books that you recommend for general computerized music? If I want, for instance, to get involved in the development of chuck, which book would you recommend? Especially about general notions such as oscilators. music theory, tempo, sampling etc... I am quite new to all of this but would really love to get into the core of music programming. I have been through the chuck manuals but it is stil quite high level and would like to understand the basis of the language itself. Any help much appreciated. ./Carl

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rec.ck gives an error and rec-auto.ck becomes mono
by 2g 03 Aug '07

03 Aug '07

came up with the idea to turn my podcast http://www002.upp.so-net.ne.jp/buyobuyo/micro/rss.xml "chuck is in dub"(learning chuck} oriented did chuck isthisokay.ck maybe.ck rec.ck and it became [rec.ck]:line(7): class 'Shred' has no member 'getArg' chuck isthisokay.ck maybe.ck rec-auto.ck is okay but mono(might be as-is) is there a better example that i write stereo .wav to my hdd? i also wonder where i do 1 => w.record; 0 => w.record; oh! in the .ck file? this is what i have as isthisokay.ck and maybe.ck is something similar SinOsc s1 => Gain g1 => dac; SinOsc s2 => g1; SinOsc s3 => PRCRev g3 => dac.left; SinOsc s4 => PRCRev g4 => dac.right; .25 => g1.gain; .25 => g3.gain; .25 => g4.gain; while( true ) { Std.rand2(32, 64) * 55.0 / 32.0 => s1.freq; 5322::ms => now; s1.freq() * Std.rand2(8, 16) / 4.0 => s2.freq; s2.freq() * Std.rand2(16, 32) / 16.0 => s3.freq; s2.freq() * Std.rand2(16, 32) / 16.0 => s4.freq; 222::ms => now; } -- 2g http://micro.ispretty.com

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Hardware information?
by Carl-Gustaf Harroch 03 Aug '07

03 Aug '07

Chuckists! First mail in this mailing list and there will probably be many more. I am a newbie with chuck. Been reading a bit and I am very excited to get my brain into this. Thanks all for putting this public. This looks exactly the type of language I ve been looking for in the last couple of months. I come from the programming side rather then musical. Anyway, my question relates to hardware. I am using ubuntu or gentoo OS. Do you have any hardware recommendation for a sound card? My current inboard card flickers the sound when I launch a simple sin loop. Even without any sound, I can hear some noises - I just think my current card is really really bad. Do you have any suggestions for a good sound card? What is the best solution - get an amplifier and use a numeric2analog converter? Secondly, I guess ALSA is the way to go or JACK, any documentation on that? Thanks, ./.Carl

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[oh my god] hanoi.ck
by 2g 03 Aug '07

03 Aug '07

was to keep quiet for a while but.. was just curious what kind of vietnam sound it would make and did chuck hanoi.ck !! arrrrgh what is it doing? it seems to have moved many files instead of making sound sould i undo? if yes how do i? tia -- 2g http://micro.ispretty.com

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can there be many ::ms in while?
by 2g 03 Aug '07

03 Aug '07

have just started coding on chuck was looking for way to let s1 have 3 overtones flying around him i know it should be something other than rand2f to handle integers but my q is about ::ms in while i wonder which one of these are the right way to use them i thought the latter might be safe but it seems to give one never changing long note and maybe only one another is floating around but none of them give me an error style one: SinOsc s1 => PRCRev g => dac; SinOsc s2 => g; SinOsc s3 => g; SinOsc s4 => g; .25 => g.gain => g.mix; while( true ) { 500::ms => now; Std.rand2f(30.0, 220.0) => s1.freq; 170::ms => now; s1.freq() * Std.rand2f(8.0, 16.0) / 8.0 => s2.freq; 75::ms => now; s2.freq() * Std.rand2f(16.0, 32.0) / 16.0 => s3.freq; 111::ms => now; s2.freq() * Std.rand2f(16.0, 32.0) / 16.0 => s4.freq; } style two: SinOsc s1 => PRCRev g => dac; SinOsc s2 => g; SinOsc s3 => g; SinOsc s4 => g; .25 => g.gain => g.mix; while( true ) { 200::ms => now; Std.rand2f(30.0, 220.0) => s1.freq; } while( true ) { 170::ms => now; s1.freq() * Std.rand2f(8, 16) / 4.0 => s2.freq; } while( true ) { 75::ms => now; s2.freq() * Std.rand2f(16, 32) / 8.0 => s3.freq; } while( true ) { 111::ms => now; s2.freq() * Std.rand2f(16, 32) / 8.0 => s4.freq; } -- 2g http://micro.ispretty.com

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