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Re: [chuck-users] chuck-users Digest, Vol 83, Issue 9
by Hayden Dahmm 27 Jun '12

27 Jun '12

Hi Mike, Great! Thank you so much for your help here. I’ll give this a try and let you all know how it goes. Cheers, Hayden From: chuck-users-request(a)lists.cs.princeton.edu Subject: chuck-users Digest, Vol 83, Issue 9 To: chuck-users(a)lists.cs.princeton.edu Date: Wed, 27 Jun 2012 11:03:21 -0400 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..." --Forwarded Message Attachment-- From: michaelclemow(a)gmail.com To: chuck-users(a)lists.cs.princeton.edu Date: Wed, 27 Jun 2012 11:03:00 -0400 Subject: Re: [chuck-users] Matlab data help Hayden, Your file is very simple: [number],[number] If I were you, I'd output (or process) this data file such that the two values are separated by white space instead of a comma and read this data with Chuck by using the FileIO objects (especially the tokenizer object -- see Chuck examples under the folder "io"). That will disintermediate the entire process and remove the need for using Open Sound Control to send the data into Chuck. UNLESS, you mean to generate this data in realtime with Matlab and sonify it using Chuck, in which case, you should definitely use Open Sound Control to send the values to your Chuck script as they are generated. (The relevant Chuck examples will be found the folder called "osc". Those should tell you how to send and receive OSC messages.) Also, if you're sending OSC from one local program to another on the same machine, you'll probably not have to change anything with regard to your firewall. On the other hand, if you're sending from one machine to another, then you might want to disable the firewall altogether in order to test the connection. Once you get it operating, then you should probably put the firewall back on and change the settings to allow connectivity through only the ports you're using. Hope that helps! Good luck! Mike http://michaelclemow.com http://semiotech.org On Tue, Jun 26, 2012 at 9:27 PM, Hayden Dahmm <hwdahmm(a)live.com> wrote: Hi guys, Thank you so much for your advice! I hadn’t realized the meaning of OSC, so I really appreciate you bringing this to my attention. I’m still a novice at programming, so I might need some time to digest the codes and examples. I’m still a bit confused about how to plug OSC outputs from Matlab into Chuck. I understand that I could eventually save the OSC values in a variable, but would I need to use UDP and take down my firewall? As was suggested, I’ve attached one of the data sets I’m working with. It’s a csv with some 3,000 data points representing the stress-strain diagram for aluminum. I’m hoping to put the values in the left column (strain) in a time array and the values in the right column (stress) in a frequency array. These values were converted from matlab. Thanks again for your help! Cheers, Hayden hwdahmm(a)live.com From: chuck-users-request(a)lists.cs.princeton.edu Subject: chuck-users Digest, Vol 83, Issue 7 To: chuck-users(a)lists.cs.princeton.edu Date: Sun, 24 Jun 2012 12:00:02 -0400 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..." --Forwarded Message Attachment-- From: witt0191(a)gmail.com To: chuck-users(a)lists.cs.princeton.edu Date: Sun, 24 Jun 2012 01:13:29 +0100 Subject: Re: [chuck-users] Importing Data/Using Quadraphonic Headphones with ChucK If the data is static another option is use to regex across the files and import it in as variables not pretty put does work. ---------- visit me http://www.scotthewitt.co.uk @scotthewitt http://www.theaudiopodcast.co.uk http://www.ablelemon.co.uk http://www.inclusiveimprov.co.uk/ On 23 June 2012 23:54, Jordan Orelli <jordanorelli(a)gmail.com> wrote: > oh, wait, .m files. Is the data being generated by Matlab? I haven't tried > it, but there's an OSC implementation for Matlab > here: http://opensoundcontrol.org/implementation/matlab-osc > > Depending on how the data is generated, the simplest thing to do may be to > just send OSC directly from Matlab to ChucK. > > -jordan > > On Saturday, June 23, 2012 at 6:45 PM, Jordan Orelli wrote: > > the documentation isn't the greatest when it comes to parsing data from > files, but it is possible in ChucK. > > There are some examples on performing file i/o that you can read > here: http://chuck.cs.princeton.edu/doc/examples/io/ > > There are some examples on performing string manipulations that you can read > here: http://chuck.cs.princeton.edu/doc/examples/string/ > > The string examples aren't listed on the main examples page, but they can be > found in the examples directory that comes with the language. It's > definitely worth your time to look through those examples and listen to > them. > > Do you have some sample files that you could post somewhere to share with > us? It would be helpful to have a dozen or so data points just so we know > what the format is. > > How big are your data sets? I'm curious to know if they are small enough to > fit in memory or if a streaming approach is required. > > If I was in your position, I would probably use some other programming > language to handle the data itself, format it into OSC messages, and send it > to ChucK through OSC, especially if the data sets are large and you can't > fit them in memory. Of course, most other programming languages don't give > you the time guarantees that ChucK gives you, so I would probably have ChucK > send an OSC message to request a data point, with some other process sending > an OSC message back in response. In that way, you could iterate over a > large dataset without ever holding it in memory. > > As an aside, do you have any recommendations on quadraphonic headphones? > > Oh and, if you're just starting out with ChucK, make sure you have test > headphones to test new code, and don't wear them when learning new features. > I blew out the cones in a pair of headphones by accidentally setting the > pole position of a OnePole ugen to 0, so… be careful ;) > > -jordan > > On Saturday, June 23, 2012 at 3:26 PM, Hayden Dahmm wrote: > > Hi everyone, > > > > My name is Hayden, and I’m a blind student at Swarthmore College, where I > intend to major in Environmental Engineering. Over the summer, I’m working > on learning ChucK so I can create auditory data displays. I’ve made decent > progress so far, but I do have a couple questions. > > > > I’m struggling to import data from cmv or .m files, forcing me to enter > values in by hand. Does anyone have suggestions as to how I could > circumvent this problem? > > > > Also, I plan to use a pair of quadraphonic headphones to interrogate spatial > data with a joystick or track pad. Has anybody tried using ChucK for this > purpose before? If so, I would be very interested to hear your thoughts. > > > > Thanks so much, > > Hayden > > hwdahmm(a)live.com > > _______________________________________________ > chuck-users mailing list > chuck-users(a)lists.cs.princeton.edu > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users > > > > > _______________________________________________ > chuck-users mailing list > chuck-users(a)lists.cs.princeton.edu > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users > --Forwarded Message Attachment-- From: michaelclemow(a)gmail.com To: chuck-users(a)lists.cs.princeton.edu Date: Sat, 23 Jun 2012 21:54:30 -0400 Subject: Re: [chuck-users] Importing Data/Using Quadraphonic Headphones with ChucK Format the data using something else so that it can read into chuck scripts using the tokenizer and the put that into variables. Jordan's got the right idea, I think. Also, OSC is great for this kind of thing. Check out pyliblo OSC library for python. python's great at data manipulation. Peace, Mike Sent from my Computing Familiar. On Jun 23, 2012, at 8:14 PM, Scott Hewitt <witt0191(a)gmail.com> wrote: > If the data is static another option is use to regex across the files > and import it in as variables not pretty put does work. > > > ---------- > visit me > > http://www.scotthewitt.co.uk > @scotthewitt > > http://www.theaudiopodcast.co.uk > http://www.ablelemon.co.uk > http://www.inclusiveimprov.co.uk/ > > > On 23 June 2012 23:54, Jordan Orelli <jordanorelli(a)gmail.com> wrote: >> oh, wait, .m files. Is the data being generated by Matlab? I haven't tried >> it, but there's an OSC implementation for Matlab >> here: http://opensoundcontrol.org/implementation/matlab-osc >> >> Depending on how the data is generated, the simplest thing to do may be to >> just send OSC directly from Matlab to ChucK. >> >> -jordan >> >> On Saturday, June 23, 2012 at 6:45 PM, Jordan Orelli wrote: >> >> the documentation isn't the greatest when it comes to parsing data from >> files, but it is possible in ChucK. >> >> There are some examples on performing file i/o that you can read >> here: http://chuck.cs.princeton.edu/doc/examples/io/ >> >> There are some examples on performing string manipulations that you can read >> here: http://chuck.cs.princeton.edu/doc/examples/string/ >> >> The string examples aren't listed on the main examples page, but they can be >> found in the examples directory that comes with the language. It's >> definitely worth your time to look through those examples and listen to >> them. >> >> Do you have some sample files that you could post somewhere to share with >> us? It would be helpful to have a dozen or so data points just so we know >> what the format is. >> >> How big are your data sets? I'm curious to know if they are small enough to >> fit in memory or if a streaming approach is required. >> >> If I was in your position, I would probably use some other programming >> language to handle the data itself, format it into OSC messages, and send it >> to ChucK through OSC, especially if the data sets are large and you can't >> fit them in memory. Of course, most other programming languages don't give >> you the time guarantees that ChucK gives you, so I would probably have ChucK >> send an OSC message to request a data point, with some other process sending >> an OSC message back in response. In that way, you could iterate over a >> large dataset without ever holding it in memory. >> >> As an aside, do you have any recommendations on quadraphonic headphones? >> >> Oh and, if you're just starting out with ChucK, make sure you have test >> headphones to test new code, and don't wear them when learning new features. >> I blew out the cones in a pair of headphones by accidentally setting the >> pole position of a OnePole ugen to 0, so… be careful ;) >> >> -jordan >> >> On Saturday, June 23, 2012 at 3:26 PM, Hayden Dahmm wrote: >> >> Hi everyone, >> >> >> >> My name is Hayden, and I’m a blind student at Swarthmore College, where I >> intend to major in Environmental Engineering. Over the summer, I’m working >> on learning ChucK so I can create auditory data displays. I’ve made decent >> progress so far, but I do have a couple questions. >> >> >> >> I’m struggling to import data from cmv or .m files, forcing me to enter >> values in by hand. Does anyone have suggestions as to how I could >> circumvent this problem? >> >> >> >> Also, I plan to use a pair of quadraphonic headphones to interrogate spatial >> data with a joystick or track pad. Has anybody tried using ChucK for this >> purpose before? If so, I would be very interested to hear your thoughts. >> >> >> >> Thanks so much, >> >> Hayden >> >> hwdahmm(a)live.com >> >> _______________________________________________ >> chuck-users mailing list >> chuck-users(a)lists.cs.princeton.edu >> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users >> >> >> >> >> _______________________________________________ >> chuck-users mailing list >> chuck-users(a)lists.cs.princeton.edu >> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users >> > _______________________________________________ > chuck-users mailing list > chuck-users(a)lists.cs.princeton.edu > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users _______________________________________________ chuck-users mailing list chuck-users(a)lists.cs.princeton.edu https://lists.cs.princeton.edu/mailman/listinfo/chuck-users

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Matlab data help
by Hayden Dahmm 27 Jun '12

27 Jun '12

Hi guys, Thank you so much for your advice! I hadn’t realized the meaning of OSC, so I really appreciate you bringing this to my attention. I’m still a novice at programming, so I might need some time to digest the codes and examples. I’m still a bit confused about how to plug OSC outputs from Matlab into Chuck. I understand that I could eventually save the OSC values in a variable, but would I need to use UDP and take down my firewall? As was suggested, I’ve attached one of the data sets I’m working with. It’s a csv with some 3,000 data points representing the stress-strain diagram for aluminum. I’m hoping to put the values in the left column (strain) in a time array and the values in the right column (stress) in a frequency array. These values were converted from matlab. Thanks again for your help! Cheers, Hayden hwdahmm(a)live.com From: chuck-users-request(a)lists.cs.princeton.edu Subject: chuck-users Digest, Vol 83, Issue 7 To: chuck-users(a)lists.cs.princeton.edu Date: Sun, 24 Jun 2012 12:00:02 -0400 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..." --Forwarded Message Attachment-- From: witt0191(a)gmail.com To: chuck-users(a)lists.cs.princeton.edu Date: Sun, 24 Jun 2012 01:13:29 +0100 Subject: Re: [chuck-users] Importing Data/Using Quadraphonic Headphones with ChucK If the data is static another option is use to regex across the files and import it in as variables not pretty put does work. ---------- visit me http://www.scotthewitt.co.uk @scotthewitt http://www.theaudiopodcast.co.uk http://www.ablelemon.co.uk http://www.inclusiveimprov.co.uk/ On 23 June 2012 23:54, Jordan Orelli <jordanorelli(a)gmail.com> wrote: > oh, wait, .m files. Is the data being generated by Matlab? I haven't tried > it, but there's an OSC implementation for Matlab > here: http://opensoundcontrol.org/implementation/matlab-osc > > Depending on how the data is generated, the simplest thing to do may be to > just send OSC directly from Matlab to ChucK. > > -jordan > > On Saturday, June 23, 2012 at 6:45 PM, Jordan Orelli wrote: > > the documentation isn't the greatest when it comes to parsing data from > files, but it is possible in ChucK. > > There are some examples on performing file i/o that you can read > here: http://chuck.cs.princeton.edu/doc/examples/io/ > > There are some examples on performing string manipulations that you can read > here: http://chuck.cs.princeton.edu/doc/examples/string/ > > The string examples aren't listed on the main examples page, but they can be > found in the examples directory that comes with the language. It's > definitely worth your time to look through those examples and listen to > them. > > Do you have some sample files that you could post somewhere to share with > us? It would be helpful to have a dozen or so data points just so we know > what the format is. > > How big are your data sets? I'm curious to know if they are small enough to > fit in memory or if a streaming approach is required. > > If I was in your position, I would probably use some other programming > language to handle the data itself, format it into OSC messages, and send it > to ChucK through OSC, especially if the data sets are large and you can't > fit them in memory. Of course, most other programming languages don't give > you the time guarantees that ChucK gives you, so I would probably have ChucK > send an OSC message to request a data point, with some other process sending > an OSC message back in response. In that way, you could iterate over a > large dataset without ever holding it in memory. > > As an aside, do you have any recommendations on quadraphonic headphones? > > Oh and, if you're just starting out with ChucK, make sure you have test > headphones to test new code, and don't wear them when learning new features. > I blew out the cones in a pair of headphones by accidentally setting the > pole position of a OnePole ugen to 0, so… be careful ;) > > -jordan > > On Saturday, June 23, 2012 at 3:26 PM, Hayden Dahmm wrote: > > Hi everyone, > > > > My name is Hayden, and I’m a blind student at Swarthmore College, where I > intend to major in Environmental Engineering. Over the summer, I’m working > on learning ChucK so I can create auditory data displays. I’ve made decent > progress so far, but I do have a couple questions. > > > > I’m struggling to import data from cmv or .m files, forcing me to enter > values in by hand. Does anyone have suggestions as to how I could > circumvent this problem? > > > > Also, I plan to use a pair of quadraphonic headphones to interrogate spatial > data with a joystick or track pad. Has anybody tried using ChucK for this > purpose before? If so, I would be very interested to hear your thoughts. > > > > Thanks so much, > > Hayden > > hwdahmm(a)live.com > > _______________________________________________ > chuck-users mailing list > chuck-users(a)lists.cs.princeton.edu > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users > > > > > _______________________________________________ > chuck-users mailing list > chuck-users(a)lists.cs.princeton.edu > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users > --Forwarded Message Attachment-- From: michaelclemow(a)gmail.com To: chuck-users(a)lists.cs.princeton.edu Date: Sat, 23 Jun 2012 21:54:30 -0400 Subject: Re: [chuck-users] Importing Data/Using Quadraphonic Headphones with ChucK Format the data using something else so that it can read into chuck scripts using the tokenizer and the put that into variables. Jordan's got the right idea, I think. Also, OSC is great for this kind of thing. Check out pyliblo OSC library for python. python's great at data manipulation. Peace, Mike Sent from my Computing Familiar. On Jun 23, 2012, at 8:14 PM, Scott Hewitt <witt0191(a)gmail.com> wrote: > If the data is static another option is use to regex across the files > and import it in as variables not pretty put does work. > > > ---------- > visit me > > http://www.scotthewitt.co.uk > @scotthewitt > > http://www.theaudiopodcast.co.uk > http://www.ablelemon.co.uk > http://www.inclusiveimprov.co.uk/ > > > On 23 June 2012 23:54, Jordan Orelli <jordanorelli(a)gmail.com> wrote: >> oh, wait, .m files. Is the data being generated by Matlab? I haven't tried >> it, but there's an OSC implementation for Matlab >> here: http://opensoundcontrol.org/implementation/matlab-osc >> >> Depending on how the data is generated, the simplest thing to do may be to >> just send OSC directly from Matlab to ChucK. >> >> -jordan >> >> On Saturday, June 23, 2012 at 6:45 PM, Jordan Orelli wrote: >> >> the documentation isn't the greatest when it comes to parsing data from >> files, but it is possible in ChucK. >> >> There are some examples on performing file i/o that you can read >> here: http://chuck.cs.princeton.edu/doc/examples/io/ >> >> There are some examples on performing string manipulations that you can read >> here: http://chuck.cs.princeton.edu/doc/examples/string/ >> >> The string examples aren't listed on the main examples page, but they can be >> found in the examples directory that comes with the language. It's >> definitely worth your time to look through those examples and listen to >> them. >> >> Do you have some sample files that you could post somewhere to share with >> us? It would be helpful to have a dozen or so data points just so we know >> what the format is. >> >> How big are your data sets? I'm curious to know if they are small enough to >> fit in memory or if a streaming approach is required. >> >> If I was in your position, I would probably use some other programming >> language to handle the data itself, format it into OSC messages, and send it >> to ChucK through OSC, especially if the data sets are large and you can't >> fit them in memory. Of course, most other programming languages don't give >> you the time guarantees that ChucK gives you, so I would probably have ChucK >> send an OSC message to request a data point, with some other process sending >> an OSC message back in response. In that way, you could iterate over a >> large dataset without ever holding it in memory. >> >> As an aside, do you have any recommendations on quadraphonic headphones? >> >> Oh and, if you're just starting out with ChucK, make sure you have test >> headphones to test new code, and don't wear them when learning new features. >> I blew out the cones in a pair of headphones by accidentally setting the >> pole position of a OnePole ugen to 0, so… be careful ;) >> >> -jordan >> >> On Saturday, June 23, 2012 at 3:26 PM, Hayden Dahmm wrote: >> >> Hi everyone, >> >> >> >> My name is Hayden, and I’m a blind student at Swarthmore College, where I >> intend to major in Environmental Engineering. Over the summer, I’m working >> on learning ChucK so I can create auditory data displays. I’ve made decent >> progress so far, but I do have a couple questions. >> >> >> >> I’m struggling to import data from cmv or .m files, forcing me to enter >> values in by hand. Does anyone have suggestions as to how I could >> circumvent this problem? >> >> >> >> Also, I plan to use a pair of quadraphonic headphones to interrogate spatial >> data with a joystick or track pad. Has anybody tried using ChucK for this >> purpose before? If so, I would be very interested to hear your thoughts. >> >> >> >> Thanks so much, >> >> Hayden >> >> hwdahmm(a)live.com >> >> _______________________________________________ >> chuck-users mailing list >> chuck-users(a)lists.cs.princeton.edu >> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users >> >> >> >> >> _______________________________________________ >> chuck-users mailing list >> chuck-users(a)lists.cs.princeton.edu >> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users >> > _______________________________________________ > chuck-users mailing list > chuck-users(a)lists.cs.princeton.edu > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users

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Importing Data/Using Quadraphonic Headphones with ChucK
by Hayden Dahmm 23 Jun '12

23 Jun '12

Hi everyone, My name is Hayden, and I’m a blind student at Swarthmore College, where I intend to major in Environmental Engineering. Over the summer, I’m working on learning ChucK so I can create auditory data displays. I’ve made decent progress so far, but I do have a couple questions. I’m struggling to import data from cmv or .m files, forcing me to enter values in by hand. Does anyone have suggestions as to how I could circumvent this problem? Also, I plan to use a pair of quadraphonic headphones to interrogate spatial data with a joystick or track pad. Has anybody tried using ChucK for this purpose before? If so, I would be very interested to hear your thoughts. Thanks so much, Hayden hwdahmm(a)live.com

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Re: [chuck-users] chuck-users Digest, Vol 83, Issue 1
by Joel Matthys 19 Jun '12

19 Jun '12

Hi Chris. Yikes, anything above about 40% CPU is pretty dicey for live audio. The OSC listeners themselves should be fairly trivial, CPU-wise. I suspect that the bulk of your power is going to calculating audio, so that's where you should look to optimize. Do you have 26 simultaneous voices sounding? If so, that might be too taxing for ChucK (or any other live audio language, for that matter). But if any of the voices are only occasionally active, I suggest unchucking UGens when they're not in use (myOsc =< dac etc.) Any UGens not directly connected in a signal path to either the dac or the blackhole will not calculate audio, thus preserving precious CPU cycles. You can reconnect them on demand. -Joel >This program takes up a LOT of CPU resources, and I was wondering if anybody had any >tips on optimization, or if this is just a fact of life with a ChucK program of this >nature. I know that the OSC stuff has only recently been implemented. I feel like >I've been reasonably efficient with my code, but I'm seeing upwards of 80% CPU usage. >It stays pretty stable, but this seems like a lot. In its current state, it's >unplayable on my dual-core laptop, but my quad-core desktop can handle it OK.

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is there a way of doing "callbacks" ( i.e. passing function as argument to be called later ) ?
by henrique matias 08 Jun '12

08 Jun '12

This is a question Chris did to me and it reminded me some related questions i forgot to ask: Is there a type "function" or type "Class" ? Is there anyway for "evaluating" a string to chuck code in order to do dynamic calls ( like javascript "eval" function for instance ) ?

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question about memory optimization
by [chriswicks] 07 Jun '12

07 Jun '12

Hello all! I have a moderately-sized project that I'm working on right now...the basic gist is that it's several smaller ChucK programs containing infinite loops and OSC event "listeners" that trigger certain behaviors or events in the music all running concurrently (the main catcher/sender for the OSC values is being written in C++). All told, in its present state there are 26 shreds running in the VM. This program takes up a LOT of CPU resources, and I was wondering if anybody had any tips on optimization, or if this is just a fact of life with a ChucK program of this nature. I know that the OSC stuff has only recently been implemented. I feel like I've been reasonably efficient with my code, but I'm seeing upwards of 80% CPU usage. It stays pretty stable, but this seems like a lot. In its current state, it's unplayable on my dual-core laptop, but my quad-core desktop can handle it OK. Thanks for any insight! -chris wicks

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a little debugging help for frozen VM!
by [chriswicks] 30 May '12

30 May '12

Hey, all. I'm attempting to build something that shifts layers of ChucK files based on OSC events, and I hit a snag really early on. I'm a relatively new programmer, so hopefully this isn't too stupid of a question, but I've got an issue that freezes the virtual machine and doesn't play any sound or send any OSC events. Nothing happens..the VM shows that the shreds are added, and then it just freezes and I have to force quit...it won't take a --removeall or --kill command or anything. Individually, each file works as it should, aside from the file whose code I am including here. I think I may be missing a key concept as to the way Machine.add works and how it assigns the value of the shred to an int, but I'm just not sure. If anyone can give me some direction here as to what might be happening I'd appreciate it! I've tried advancing time in various places, setting my initial pedCount to various values, all to no avail. Thanks very much, and please let me know if this is unclear in any way. //begincode Machine.add("justa.ck"); //class of frequency definitions Machine.add("pedestrianSender.ck"); //OSC sender of int values OscRecv receiver; //OSC receiver object 6449 => receiver.port; receiver.listen(); receiver.event("weather/pedestrian, int") @=> OscEvent pedEvent; -1 => int b3base1; //int to store a shred ID -1 => int b3base2; //ditto 25 => int pedCount; //int to store pedCount sent via OSC while (true) { //if the pedCount is greater than 20 (a value which will be sent via OSC) and b3base1 is equal to -1, i.e. the shred isn't currently running, //add both shreds to the VM and assign their shred ID to the b3base1 and b3base2 if (pedCount > 20 && b3base1 == -1) { Machine.add("b3base.ck") => b3base1; Machine.add("b3base.ck") => b3base2; } else { //if the pedCount is less than 20, remove both shreds from the VM and assign -1 to their value so that if the pedCount goes back above 20 they //meet the conditional. if (pedCount < 20 && b3base1 != -1) { Machine.remove(b3base1); Machine.remove(b3base2); -1 => b3base1; -1 => b3base2; } } while( pedEvent.nextMsg() != 0) { pedEvent.getInt() => pedCount; 2::second => now; } } //endcode

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noob: change ADSR release/floor value
by George Locke 21 May '12

21 May '12

Hi, I am trying to make a simple FM patch. I want the modulation index to change by ADSR, but I'm not sure what the best way to set the ADSR's gain to a range besides 0-1. (I am new to ChucK, but not to computer music and not to computer programming.) The signal path I have right now looks like this: SinOsc m => ADSR modEnv => Gain g1 => SinOsc c => dac; m => Gain g2 => c; If I set g1's gain to maxIndex - minIndex, and g2's gain is set to minIndex, I achieve the desired result, but I just want to make sure I'm not making my life unnecessarily complicated by doing it this way. (I'm used to max/msp where there's a +~ object.) Thanks, George

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Stanford Laptop Orchestra: Spring Concert 2012
by Ge Wang 21 May '12

21 May '12

Dear fellow ChucKians, The Stanford Laptop Orchestra (SLOrk) celebrates the conclusion of its 2011-2012 season with the annual full-scale laptop orchestra concert in Dinkelspiel Auditorium at Stanford University! You are invited to an evening of all new works for the full ensemble of humans, laptops, hemispherical speaker arrays, mobile device, and crazy new instruments! Stanford Laptop Orchestra: Spring Concert 2012 Wednesday June 6th, 8pm | Dinkelspiel Auditorium free and open to the public For details, visit: http://slork.stanford.edu/events/2012/spring/ Stanford Laptop Orchestra: http://slork.stanford.edu/ http://www.facebook.com/slork (join usssss!) Thank you and we hope to see you then and there! Best, Ge! ~~~ Ge Wang Assistant Professor Center for Computer Research in Music and Acoustics (CCRMA) Department of Music (also Computer Science, by Courtesy) Stanford University http://ccrma.stanford.edu/~ge/ ~ Co-founder, CTO, Chief Creative Officer Smule http://www.smule.com/ | http://twitter.com/gewang ~~~

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Space Navigator
by Lester Hall 21 May '12

21 May '12

Hi folks, I bought a Space Navigator and would like to interface it to ChucK. I tried writing a joystick program but got the message: "[MMMM 1.ck]: HidIn: couldn't open joystick 0... ". Other device numbers yielded similar results. I searched and searched the archive of this list going back five years but did not notice any subjects with Space Navigator in them, and the wiki and forum search yielded nothing. How do I get my Space Navigator to work with ChucK? Les

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