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

miniAudicle problems
by Atte André Jensen 01 Dec '06

01 Dec '06

Hi Just installed miniAudicle 0.1.3.6 (and the included chuck) on my debian/unstable laptop. Something seems wrong with miniAudicle, since some examples (just tried a few under basic) make no sound. Here's what I tried that makes sound in both chuck and miniAudicle: fm2, fm3, curly++ And the following only make sound in chuck: blit, moe, moe++, chirp, chirp2, larry, larry++ However the ones actually sounding in miniAudicle, only sound in one channel (left)... Both miniAudicle and chuck are compiled using make linux-alsa. Any idea what could be the cause of this? Did I miss something? -- peace, love & harmony Atte http://www.atte.dk | quintet: http://www.anagrammer.dk | compositions: http://www.atte.dk/composition

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examples/hid/kb.ck
by Atte André Jensen 01 Dec '06

01 Dec '06

Hi I wanted to check out the hid interface, but: atte@ajstrup:~/music/chuck/examples/hid$ chuck kb.ck [chuck]: HidIn: couldn't open HID device 3:0... What am I doing wrong? This is under linux... I don't know if it's relevant, but heres what "chuck --probe" has to say: atte@ajstrup:~/music/chuck/examples/hid$ chuck --probe [chuck]: found 6 device(s) ... [chuck]: ------( chuck -- dac1 )--------------- [chuck]: device name = "hw:I82801DBICH4,0" [chuck]: probe [success] ... [chuck]: # output channels = 2 [chuck]: # input channels = 2 [chuck]: # duplex Channels = 2 [chuck]: default device = YES [chuck]: natively supported data formats: [chuck]: 16-bit int [chuck]: 32-bit int [chuck]: supported sample rates: [chuck]: 8000 Hz [chuck]: 9600 Hz [chuck]: 11025 Hz [chuck]: 16000 Hz [chuck]: 22050 Hz [chuck]: 32000 Hz [chuck]: 44100 Hz [chuck]: 48000 Hz [chuck]: [chuck]: ------( chuck -- dac2 )--------------- [chuck]: device name = "hw:I82801DBICH4,1" [chuck]: probe [success] ... [chuck]: # output channels = 0 [chuck]: # input channels = 2 [chuck]: # duplex Channels = 0 [chuck]: default device = NO [chuck]: natively supported data formats: [chuck]: 16-bit int [chuck]: supported sample rates: [chuck]: 48000 Hz [chuck]: [chuck]: ------( chuck -- dac3 )--------------- [chuck]: device name = "hw:I82801DBICH4,2" [chuck]: probe [success] ... [chuck]: # output channels = 0 [chuck]: # input channels = 2 [chuck]: # duplex Channels = 0 [chuck]: default device = NO [chuck]: natively supported data formats: [chuck]: 16-bit int [chuck]: supported sample rates: [chuck]: 48000 Hz [chuck]: [chuck]: ------( chuck -- dac4 )--------------- [chuck]: device name = "hw:I82801DBICH4,3" [chuck]: probe [success] ... [chuck]: # output channels = 0 [chuck]: # input channels = 2 [chuck]: # duplex Channels = 0 [chuck]: default device = NO [chuck]: natively supported data formats: [chuck]: 16-bit int [chuck]: supported sample rates: [chuck]: 48000 Hz [chuck]: [chuck]: ------( chuck -- dac5 )--------------- [chuck]: device name = "hw:I82801DBICH4,4" [chuck]: probe [success] ... [chuck]: # output channels = 2 [chuck]: # input channels = 0 [chuck]: # duplex Channels = 0 [chuck]: default device = NO [chuck]: natively supported data formats: [chuck]: 16-bit int [chuck]: supported sample rates: [chuck]: 48000 Hz [chuck]: [chuck]: ------( chuck -- dac6 )--------------- [chuck]: device name = "hw:Modem,0" [chuck]: probe [success] ... [chuck]: # output channels = 1 [chuck]: # input channels = 1 [chuck]: # duplex Channels = 1 [chuck]: default device = NO [chuck]: natively supported data formats: [chuck]: 16-bit int [chuck]: supported sample rates: [chuck]: 8000 Hz [chuck]: 9600 Hz [chuck]: 16000 Hz [chuck]: [chuck]: ------( chuck -- 1 MIDI inputs )------ [chuck]: [0] : "Midi Through Port-0" [chuck]: [chuck]: ------( chuck -- 1 MIDI outputs )----- [chuck]: [0] : "Midi Through Port-0" [chuck]: -- peace, love & harmony Atte http://www.atte.dk | quintet: http://www.anagrammer.dk | compositions: http://www.atte.dk/compositions

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control envelopes
by Atte André Jensen 01 Dec '06

01 Dec '06

Hi I played a bit with the new LPF ugen. Thanks alot for adding this, it's really, really great! Working with this made me think about how to control a filter over time. Supposed I want a really simple, classic sound of a SawOsc ran through a LPF controlled by a (dare I say it) envelope. I have an instrument like this: fun static void moog_bass(float note, float dynamic, dur length){ Event off; spork ~ moog_bass(note, dynamic, off); length => now; off.broadcast(); .2::second => now; } fun static void moog_bass(float note, float dynamic, Event off){ .13 => float volume; //0 => volume; SawOsc osc => LPF f => dac; Std.mtof(note) => osc.freq; 1 => f.Q; 400 => f.freq; Mixer.bass * volume => f.gain; while(f.freq() > 80){ f.freq() * .9 => f.freq; 10::ms => now; } off => now; while(f.gain() > .000001){ f.gain() * .99 => f.gain; .1::ms => now; } } This instrument works with both midi (where we don't know the length before noteoff) and from code (where I prefer to use a length). Only problem is that if the length is too short, the off-event is broadcast before the first while is finished. This means that the off-event is never received, which in turn makes the instrument click. Any ideas how to solve this? I still find myself wishing for ADSR's to be able to control stuff, but that won't happen, right? Another related situation: Supposed I want to modulate both panning, volume and filter by different predetermined "curves"s. I can't get my head around how that is done nicely. A multi breakpoint envelope that could controll stuff (like csounds expseg and linseg) would be really great in some situations, since they are so easy to setup and experiment with the different timings/levels. But how could something like this be solved with chuck? -- peace, love & harmony Atte http://www.atte.dk | quintet: http://www.anagrammer.dk | compositions: http://www.atte.dk/compositions

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spice up your code
by Kassen 30 Nov '06

30 Nov '06

Hi, list, I'm a bit tirered of having to type "while(true)....." all the time. "true" as a concept may be dependable but it's purity makes it rather one-sided and boring. Back when I was taking language philosophy clases I was tought that any fact about the world we know to be true equates to the abstract platonic concept of truth (I'm not debating here and now wether that's true or wether I thought it made much sense). Sadly in chuck this only works for a select set of facts about the world which might be due to ChucK's youth and inexperience with the world. At least this one works; While (float rubber_ducky) { //loop goes here } ;-) Yours, Kas.

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realtime priorities
by Atte André Jensen 29 Nov '06

29 Nov '06

Hi Is it correct that it isn't possible to run chuck/linux with realtime priority? When I start zynaddsubfx I see (in htop) one line with priority -51 and one with priority 15. Chuck I see two, one with priority 15 and one with priority 16. Renicing chuck to -19 or so helps alot, but still... If this is not currently possible, would it be a major request to implement? -- peace, love & harmony Atte http://www.atte.dk | quintet: http://www.anagrammer.dk | compositions: http://www.atte.dk/compositions

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is some_id runnig?
by Atte André Jensen 28 Nov '06

28 Nov '06

Hi Is it possible to ask (from within chuck) whether a given id is running, that is present in the VM? -- peace, love & harmony Atte http://www.atte.dk | quintet: http://www.anagrammer.dk | compositions: http://www.atte.dk/compositions

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function call syntax(bug?).
by Kassen 28 Nov '06

28 Nov '06

Hi, list! Let's asume we have this function; //---- fun void greeting() { <<<"hey, ChucKer!">>>; } //----- clearly we would call it like this; greeting(); and all would be well. However, if we asume we would be a fairly chaotic sort of person who would make a large amount of typos, especially at 4 in the morning while trusting the parser will catch them for him faster then proofreading will (this is purely hypothetical). In this case it could theoretically happen that one would by accident type; greeting; This compiles just fine and nothing is wrong except for ChucK not running the function. The question now is; should ChucK complain about such function calls? Is there some unforseen practical use in calling no-parameter functions without empty brackets? Yours, Kas.

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removing shreds by name from within chuck
by Atte André Jensen 28 Nov '06

28 Nov '06

Hi I'm trying to write a little something that'll load/unload files from within chuck. I've assigned different filenames to each of the keys a-z and now when a key is pressed I want to: if(file_is_running(filename)){ machine.remove(filename2id(filename)); } else { machine.add(filename); } So basically: how do I figure out if a shred is running with a certain filename and how do I get the id? To be clear: This information is available in the terminal if I kick chuck with "chuck ^", but I want to access this information inside chuck... -- peace, love & harmony Atte http://www.atte.dk | quintet: http://www.anagrammer.dk | compositions: http://www.atte.dk/compositions

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file operations etc.
by Atte André Jensen 28 Nov '06

28 Nov '06

Hi again Are there any plans to include stuff like reading/writing text to files, saving/loading objects (ala tickle in python), navigating paths, getting directory contents and regular string operations like replacement, search? Actually, I'm thinking that if I need alot of stuff like this, maybe I should better make myself a python wrapper... OTOH it would be nice to have everything in pure chuck. Actually that's one of the reasons I tried out chuck in the first place (comming from years of csounding); that it's more like "a real" language... Any thoughts? -- peace, love & harmony Atte http://www.atte.dk | quintet: http://www.anagrammer.dk | compositions: http://www.atte.dk/compositions

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Std.atoi broken?
by Atte André Jensen 27 Nov '06

27 Nov '06

Hi I might be doing something wrong, but it seems to me that atoi is behaving a bit strange... <<<Std.atoi("a")>>>; <<<Std.atoi("b")>>>; <<<Std.atoi("c")>>>; <<<Std.atoi("d")>>>; prints: 0 :(int) 0 :(int) 0 :(int) 0 :(int) Am I doing something wrong or are my expectations (97-100) for atoi out of proportions? What I'm trying to do is convert from the "a" to 97 as read by KBHit->getchar() and back. This also means that I've been looking for itoa, which I couldn't find. -- peace, love & harmony Atte http://www.atte.dk | quintet: http://www.anagrammer.dk | compositions: http://www.atte.dk/compositions

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KBHit vs Hid
by Atte André Jensen 27 Nov '06

27 Nov '06

Hi I just discovered KBHit, and it seems to fit better with my needs than Hid. I played around with both, and think I get the difference somehow (KBHit reads through the os, Hid is raw from device, + KBHit only reads chars). Is this correctly understood? -- peace, love & harmony Atte http://www.atte.dk | quintet: http://www.anagrammer.dk | compositions: http://www.atte.dk/compositions

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ChucK on the radio
by Graham Coleman 22 Nov '06

22 Nov '06

ChucK radioheads, I'll be doing some live music on WREK 91.1 Atlanta (Georgia Tech) this afternoon for The Mobius, the specialty electronic show. I'll be livecoding and maybe talking about ChucK a bit. Tune in if you're in Atlanta, otherwise you might be able to catch the live or archived stream at http://www.wrek.org/. The show starts at 7pm, I'll probably go on at 8pm EST. just so I can share, recent ChucK tracks: http://ravelite.org/music/sketches/prelude%20cffx.mp3 (a cover) http://ravelite.org/music/sketches/chuck_ex14c.mp3 http://ravelite.org/music/sketches/chuck_ex18i.mp3 from the Atlanta Laptop Battle Finals: http://www.zeroplate.com/laptop/gc1.mp3 http://www.zeroplate.com/laptop/gc3.mp3 keep on ChucKing, Graham

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sociative polydimenional arrays
by Kassen 21 Nov '06

21 Nov '06

Hi list, some more arrays for fun and (potential?) profit.... //this goes well; int foo[8]; 3 => foo[0]; 5 => foo["test"]; //let's make sure <<< foo[0] >>>; <<< foo["test"] >>>; //that was fun! //lets do it again in 2D! //fine int bar[3][8]; //fine 3 => bar[0][0]; //not so fine 5 => bar[0]["test"]; //we never get here <<< foo[0][0] >>>; <<< foo[0]["test"] >>>; Why is this? Is this a bug? Missing feature? Complete misunderstanding of how to combine polydimentional arrays and sociative-ness? ChucK claims foo goes out of bounds but I suspect it's either a bug or a syntax error because frankly I can't see how I could prevent 5 => bar[0]["test"]; from going out of bounds. Yours, Kas.

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reseting sndbuf
by altern 17 Nov '06

17 Nov '06

hi here i am with my weekly question ;) Le t see if I explain this properly, I have few sndbuf playing. For this i am using a class that instantiates and controls a buffer and keeps the data for the buffer. It also sporks a shred that plays the sound. At some point and while the buffer is being played i need to change the start point and length of the loop played. At the moment, the buffer keeps playing until it is time to start again and it does not updates its values until the loop is executed again. I would need the buffer to acknowledge that the length has changed 'on the fly'. How could I do this? This is the method sporked by the player class to play the buffer fun void loop() { while(!paused){ //play loop again if not paused gain => buffer.gain; gpitch => buffer.rate; pos => buffer.pos; pan => p.pan; length::samp => now; } } If I understand well, this line length::samp => now; means that until the lenght time has passed the while wont loop again. So i would need some way to detect the current pos of the buffer then stop that sound and restart again the while with the new values at the pos where the sound was at the moment of the change. I am not sure about how to to this or if this is the right way to do it. any tips? thanks enrike

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running chuck as a process with no terminal?
by altern 17 Nov '06

17 Nov '06

hi i am launching chuck from python (i have a python GUI and chuck works as sound engine). When I run chuck from python it opens a terminal, I would like to hide this. I use python os.spawnv command for this. In PD there is a startup flag -nogui that launches pd as a process with no console whatsoever, only visible via top or process list. Anything like that in ChucK? i have checked the documentation for the virtual machine but i could not see anything in this direction. Another important issue i am having is that as soon as the chuck terminal loses the focus the sound stops. So when I select the python window the sound stops. Is there any way to avoid this? I am working on xp at the moment, so i havent tested if this happens as well on linux or osx. I have very limited access to internet for a few days so i cannot search on the mailing list archive or the forum about this issue. Sorry. thanks enrike

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eval and concatenating strings
by altern 15 Nov '06

15 Nov '06

hi again here i am with couple of questions again. is there a way to concatenate strings? I am trying different ways with no much luck and i have checked the docs but i could not find a way to it. another issue is: is there a way to eval a string as code like in python or actionscript? The questions come from some commands i am forced to type over and over despite of being almost identical recv.event("/0/mute, i") @=> OscEvent mute0_osc; the only difference of the number (0 in this case) for each of the sample players i have constructed Would it be possible to create variables on the fly from concatenated strings? I mean something like (in wish code) for (0 => int n; n < 8; n++){ "/" + Std.itoa(n) + "/mute, i" @=> string address; //concatenate string recv.event(address) @=> OscEvent Std.eval("mute"+ Std.itoa(n) + "_osc"); //concatenate and eval string } thanks enrike

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how do you maipulate an array with rand2()?
by Malik Martin 14 Nov '06

14 Nov '06

hi i already posted this on the forums, but it doesnt seem as active as i imagine the mailing list might be(no offense of course). so here's my post hi i'm trying to access an array with rand2() but i get syntax errors: while( true ) { //1 bar at 180bpm cut into 8ths float push[ 0, 166.625, 333.25, 499.875, 666.5, 833.125, 999.75, 1166.375 ] push[Math.rand2(0,7)] => buf.pos; 1333::ms => now; } i made a second post with a minor update i noticed my syntax errors in comparison to otf_06.ck on page 49 in the manual and re-wrote it. // time loop while( true ) { //1 bar at 180bpm cut into 8ths [ 0, 166.625, 333.25, 499.875, 666.5, 833.125, 999.75, 1166.375 ]@=> float push[]; push[Math.rand2(0,7)] => buf.pos; 1333::ms => now; } but i still get this error: [SndBufTest1.ck]:line(19): array init [...] contains incompatible types... Malik

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float and float[]
by Kassen 12 Nov '06

12 Nov '06

Hi, list, I find ChucK's reaction to the following lines rather surprising. //this works, obviously 1.0 => float foo; //this is fine with chuck as well 1 => float bar; //this works as well, also obviously [1.0] @=> float fooray[]; //then why does this cause a error? [1] @=> float barray[]; Is this intentional and if so could we considder a more readable error? Right now this last line gives a error that looks (to me) like the dimentions of a multi-dimentional array don't add up which is a bit confusing Yours, Kas.

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--bufsize on Win (is fine?!!)
by Kassen 11 Nov '06

11 Nov '06

Hi, list. I just noticed that these days we can actually set the --bufsize on Windows without (unwanted) noises or complaints. That wouldn't be reason for a post but I can't remember any anouncement about this fix. Is this perhaps a side effect of the resent clean-up spree and if so does that mean we are now closer to getting DAC channels above two working? Just curious, three cheers for unexpected low latency! Merily chucking along, Kas.

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quiting chuck from chuck and saving reference to function
by altern 09 Nov '06

09 Nov '06

hi here i am again with a couple of questions : A : is it possible to quit Chuck from Chuck? I need to quit chuck when a certain osc message arrives, and i was wondering if there is a command to do this. B: can i store references to functions in variables? similar to the python: def myfunc(): dowhatever myvar = myfunc myvar() thanks! enrike

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not receiving osc in
by altern 07 Nov '06

07 Nov '06

hi i am testing osc implementation in Chuck but i dont get incomming messages. i manage to send from chuck to pd but not the other way around. i attach the pd patch and the chuck file in case anyone want to have a look. I am not sure what it could be the port should be ok as I tried with python and pd with the same ports and everything worked perfectly. So i guess i am missing something on the chuck side. thanks enrike #N canvas 0 0 466 316 12; #X obj 86 214 sendOSC; #X floatatom 87 270 5 0 0 0 - - -; #X msg 127 98 send /test 1; #X obj 308 223 print; #X obj 300 172 dumpOSC 9000; #X msg 31 72 connect localhost 9001; #X msg 125 157 send /test \$1; #X floatatom 125 137 5 0 0 0 - - -; #X obj 28 27 loadbang; #X connect 0 0 1 0; #X connect 2 0 0 0; #X connect 4 0 3 0; #X connect 5 0 0 0; #X connect 6 0 0 0; #X connect 7 0 6 0; #X connect 8 0 5 0; OscSend xmit; xmit.setHost( "localhost", 9000); // create our OSC receiver OscRecv recv; 9001 => recv.port; recv.listen(); recv.event( "/test, f" ) @=> OscEvent t; // infinite event loop while ( true ){ <<<"sending">>>; xmit.startMsg( "/sndbuf/buf/rate", "f" ); 0.5 => xmit.addFloat; 0.2::second => now; //send something t => now; // wait for event to arrive // grab the next message from the queue. while ( t.nextMsg() != 0 ){ <<<t.getFloat()>>>; } }

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no devices found
by altern 05 Nov '06

05 Nov '06

hi i am new to chuck. I am trying to run it on Linux (Debian unstable) but i get this error: $ chuck foo.ck [chuck]: (via rtaudio): no devices found for compiled audio APIs! [chuck]: cannot initialize audio device (try using --silent/-s) I tried on window goes fine. But my main production system is debian. However i am not expert on setting linux audio, still learning slowly. I installed ChucK with apt-get and i have version 1.2.0.7.dfsg-1 any ideas? thanks enrike

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chucking at ICMC
by Graham Coleman 03 Nov '06

03 Nov '06

So, Will I see you guys at ICMC? Will there be mad chucking? Graham

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Re: [chuck-users] Float to int
by babiakb＠bellsouth.net 03 Nov '06

03 Nov '06

you need to use cast say you have a float variable space and you want to convert to integer discrete: space % int => int discrete; hope this helps brian > > From: "Laurie Hollander" <catbird451(a)gmail.com> > Date: 2006/11/03 Fri PM 09:18:25 EST > To: chuck-users(a)lists.cs.princeton.edu > Subject: [chuck-users] Float to int > > Sorry for the low level of this question, but.... > I'm trying to convert a floating point number to an int so I can chuck > it to the blit harmonics parameter. I've already used the math floor > function on it, so it can be converted to an int without losing any > information. But I can't chuck it to an int without getting error > messages, and I can't find any function that converts a float to an > int in mini-Audicle or Chuck. Is there a way to do this? > > Thank you! > > --laurie > _______________________________________________ > chuck-users mailing list > chuck-users(a)lists.cs.princeton.edu > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users >

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Float to int
by Laurie Hollander 03 Nov '06

03 Nov '06

Sorry for the low level of this question, but.... I'm trying to convert a floating point number to an int so I can chuck it to the blit harmonics parameter. I've already used the math floor function on it, so it can be converted to an int without losing any information. But I can't chuck it to an int without getting error messages, and I can't find any function that converts a float to an int in mini-Audicle or Chuck. Is there a way to do this? Thank you! --laurie

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