Pd-list October 2011

pd-list@lists.iem.at

120 participants
174 discussions

py/pyext
by Benoît Pin 04 Oct '11

04 Oct '11

Hi all, I'm trying to use the py/pyext extra on OSX 10.7 with Pd-extended 0.42.5. I managed to instantiate [py] and [pym] objects, but not [pyext …]. I tried to open the demo patch "attr-1.pd" and the [pyext simple ex3] object is dashed in red, and the console prints "pyext simple ex3 ... couldn't create". I've found on archives that the "scripts" folder needs to be in the pd search path (and it is the case for me). I've also checked this "scripts" folder and it contains a simple.py module within a ex3 class. So, everything should be ok, it seems. Unfortunately, it still doesn't work. I guess that I'm missing some piece of information… Any help will be appreciated. Benoît Pin.

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Re: [PD] ALSA routing
by Marco Donnarumma 04 Oct '11

04 Oct '11

Hi Brian, I use to do this a lot, specially when trying out reactive video patches. Unfortunately, it's not straight forward but basically you need to load a alsa-jack module. You could try this, open a terminal and: ~$ qjackctl & [1] 2530 ~$ Suspending PulseAudio ~$ pdextended -jack & [2] 2561 ~$ tk scaling is 1.650422352176738 ~$ amarok & ~$ pacmd load-module module-jack-sink channels=2; Now you will see all your ports in the "connection" panel of qjack (the output of Amarok being "PulseAudio JACK Sink"). Simply make the connection you wish. That should do it. You can also save this connection setup in qjack using the patchbay, that's handy. M > This probably has been asked before, but I don't seem to be able to find > the right keywords to locate any answers on Google. > > I am running pd on linux. I have a patch that analyzes sound from an > on-computer program in realtime, and controls LED lighting based on > aubio detected beats and so on. > > The problem I am having is that jackd disconnects my audio source from > the PD inputs whenever the audio source is paused or stopped. I am using > amarok 1.4, but I really like it and would prefer not to have to switch > to another media player just for that. > > The behavior I *want* is that whenever amarok is playing music, the > music is piped into the ADC on puredata to my analysis patch, but that > otherwise no user intervention with the background patch is necessary. > > The best way I can think to deal with this is to try to find a way to > connect the final audio output on the sound driver to the ADC. > Basically, if I were doing it physically to take a cable and connect my > speaker output to my line input. > > Is there a good way to do this with either ALSA or jackd on linux in > software? Ideally in a way where individual programs can release and > attach to the output without it disrupting the connection? > > Best, > Brian Neltner > > -- Marco Donnarumma Independent New Media and Sonic Arts Practitioner, Performer, Teacher ACE, Sound Design MSc by Research (ongoing) The University of Edinburgh, UK ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Portfolio: http://marcodonnarumma.com Research: http://res.marcodonnarumma.com | http://www.thesaddj.com | http://www.flxer.net Director: http://www.liveperformersmeeting.net

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Pd-extended 0.43 builds are working again
by Hans-Christoph Steiner 04 Oct '11

04 Oct '11

Ok, after a long time without a decently working Windows build, I think we have one that is actually usable. Please give it a try and let me know. Here's the zip: http://autobuild.puredata.info/auto-build/latest/Pd-0.43.1-extended-windows… or the installer: http://autobuild.puredata.info/auto-build/latest/Pd-0.43.1-extended-windows… .hc

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Re: [PD] Variable number of objects?
by Ingo 03 Oct '11

03 Oct '11

Well, as I said in my case the voices are very complex. There are hundreds of audio objects in each voice. It takes a lot of time to adjust all of the signal flow and reallocate the memory I guess. Control objects shouldn't be such a big problem. Ingo ________________________________________ Von: Ludwig Maes [mailto:ludwig.maes@gmail.com] Gesendet: Mittwoch, 28. September 2011 19:30 An: Ingo Betreff: Re: [PD] Variable number of objects? I actually meant more in general, also for non-~ signals (i.e. also control rate .pd patches). I referred to polysynth such that people would see more easily what I meant. Are there really no such primitives? That seems like quite a restriction... How can that take 10 seconds?? I dont see what would cause such a huge overhead, i'd expect an increase in computations & memory though (say from 10 voices to 11: 10% increase in cpu workload & ram dedicated to these voices..., I fail to see what would necessitate a long initialization...) also, how is it done even with the long delays? On 28 September 2011 18:33, Ingo <ingo(a)miamiwave.com> wrote: To my experience there will be definitely audio dropouts with dynamic voice creation. In the case of my rather complex patch (with currently only 8 voices) I have to wait up to ten seconds until the patch is ready again for playback. I am using a 3.2 GHz Athlon II X2 which is not that slow. Simpler synth voices might be faster, though. I think it is much better to create as many voices as needed beforehand and turn unused voices off with the [switch~] object. Ingo ________________________________________ Von: pd-list-bounces(a)iem.at [mailto:pd-list-bounces@iem.at] Im Auftrag von Ludwig Maes Gesendet: Mittwoch, 28. September 2011 17:56 An: Pd List Betreff: [PD] Variable number of objects? Im not sure what the best way is to instantiate variable number of objects, for example consider polysynth.pd: Theres a fixed number of manually placed voices, suppose I want to have the top patch to contain a counter through which one may increase or decrease the number of voices, how would I go about that (without manually placing a load of voices and disabling them...)? Whats the vanilla way to do this? Whats the pd-extended way to do this? ...

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Fwd: Variable number of objects?
by Ludwig Maes 03 Oct '11

03 Oct '11

---------- Forwarded message ---------- From: Ludwig Maes <ludwig.maes(a)gmail.com> Date: 28 September 2011 19:29 Subject: Re: [PD] Variable number of objects? To: Ingo <ingo(a)miamiwave.com> I actually meant more in general, also for non-~ signals (i.e. also control rate .pd patches). I referred to polysynth such that people would see more easily what I meant. Are there really no such primitives? That seems like quite a restriction... How can that take 10 seconds?? I dont see what would cause such a huge overhead, i'd expect an increase in computations & memory though (say from 10 voices to 11: 10% increase in cpu workload & ram dedicated to these voices..., I fail to see what would necessitate a long initialization...) also, how is it done even with the long delays? On 28 September 2011 18:33, Ingo <ingo(a)miamiwave.com> wrote: > To my experience there will be definitely audio dropouts with dynamic voice > creation. In the case of my rather complex patch (with currently only 8 > voices) I have to wait up to ten seconds until the patch is ready again for > playback. I am using a 3.2 GHz Athlon II X2 which is not that slow. Simpler > synth voices might be faster, though. > > I think it is much better to create as many voices as needed beforehand and > turn unused voices off with the [switch~] object. > > Ingo > > ________________________________________ > Von: pd-list-bounces(a)iem.at [mailto:pd-list-bounces@iem.at] Im Auftrag von > Ludwig Maes > Gesendet: Mittwoch, 28. September 2011 17:56 > An: Pd List > Betreff: [PD] Variable number of objects? > > Im not sure what the best way is to instantiate variable number of objects, > for example consider polysynth.pd: > > Theres a fixed number of manually placed voices, suppose I want to have the > top patch to contain a counter through which one may increase or decrease > the number of voices, how would I go about that (without manually placing a > load of voices and disabling them...)? > > Whats the vanilla way to do this? Whats the pd-extended way to do this? ... > >

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gemlist_info of iterated geo
by ronni montoya 03 Oct '11

03 Oct '11

Hello, im using gemlist_info for getting the positions of my geos. I need to get the positions of a group of iterated geos, for example: repeat 19 translateXYZ -4 0 0 sphere 4 but i use gemlist_info with a group of iterated geos i get the position of my last repeated element. How can i select the geo from which i want to receive the position? thanks R.

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Re: [PD] [PD-announce] First Pure Data Dublin Patching Circle Meet October 15th!!!!! (Andrew mcgovern)
by richard duckworth 03 Oct '11

03 Oct '11

Look forward to this! Rich Duckworth Lecturer in Music Technology Department of Music House 5 Trinity College Dublin 2 Ireland Tel 353 1 896 1500 Hi All, The first meeting of the Dublin Pd Patching Circle is taking place on October the 15th at 1pm at Moxie studios just off Baggot St. For Directions see below:http://maps.google.com/maps?client=safari&rls=en&oe=UTF-8&q=google+ma… You can sign up for this free event by contacting Andy at mcgovern_4(a)hotmail.com or by following this thread: http://www.boards.ie/vbulletin/showthread.php?p=74617895 Just some information about the format for the first meeting. We are hoping that people attending will show what work they are currently doing in Pd and everyone can chip in with ideas of how to develop a patch or area of work. Then at the end of the session we can have a short brainstorming session looking for ideas that the Pd Dublin Patching Circle can work on as a team. For example I know other Patching Circles have worked together on developing Patches for the MS Kinect! This would be great if we could work together on developing Pd for the community on a whole. All the Best,Andy

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Data structure array with last element pointing back to first element
by Scott McCoid 03 Oct '11

03 Oct '11

Hi, I've recently started playing around with Pd's data structures, and I need some help. It's relatively straightforward to create polygons and arrays of polygons. Though, I'd like to create a closed polygon, where each vertex is another data structure. I've attached a patch of what I have so far. I basically just want there to be another line to connect the 4th element of the array back to the first. Is it possible to use a [drawpolygon] object where each of the corners would be another data structure? Thanks! Scott

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[PD-announce] First Pure Data Dublin Patching Circle Meet October 15th!!!!!
by Andrew mcgovern 03 Oct '11

03 Oct '11

Hi All, The first meeting of the Dublin Pd Patching Circle is taking place on October the 15th at 1pm at Moxie studios just off Baggot St. For Directions see below:http://maps.google.com/maps?client=safari&rls=en&oe=UTF-8&q=google+ma… You can sign up for this free event by contacting Andy at mcgovern_4(a)hotmail.com or by following this thread: http://www.boards.ie/vbulletin/showthread.php?p=74617895 Just some information about the format for the first meeting. We are hoping that people attending will show what work they are currently doing in Pd and everyone can chip in with ideas of how to develop a patch or area of work. Then at the end of the session we can have a short brainstorming session looking for ideas that the Pd Dublin Patching Circle can work on as a team. For example I know other Patching Circles have worked together on developing Patches for the MS Kinect! This would be great if we could work together on developing Pd for the community on a whole. All the Best,Andy _______________________________________________ Pd-announce mailing list Pd-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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how to load libraries in Pd-vanilla
by Joe Newlin 03 Oct '11

03 Oct '11

So, Pd-extended abruptly started behaving weirdly with my soundcard, which led me to test out PD-vanilla to see if I would have the same problems, and I discovered that I could get ridiculously low audio latency with Pd-vanilla, which is extremely good fortune because I often use Pd for processing a live guitar input. BUT, I can't figure out how to get Pd-vanilla to load all those libraries from Pd-extended that I've become dependent on. I tried adding them to the search paths, with no luck. I tried using [declare] with full paths, with no luck. I tried adding the libraries under Preferences > Startup with no luck. Is there something I need to know about the syntax for the Startup method? Thanks, JN -- www.joenewlin.net www.twitter.com/joe_newlin

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Pd-list October 2011