Pd-list May 2011

pd-list@lists.iem.at

101 participants
157 discussions

Non-linear spectral stretch
by Eran Sachs 31 May '11

31 May '11

Hello list, Let me separate this question from my previous post: Does anyone know how to make a non-linear spectral stretch in pd? I'd like to transpose a sound so its spectrum is not equally transposed. I played with ssb-modulation which perform spectral shifting, but I couldn't figure out how to move from that to spectral stretching. Any thoughts? Much appreciated, Zax

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pd for Motorola Xoom
by Pagano, Patrick 31 May '11

31 May '11

Hello I just got a Motorola Xoom for an early birthday Gift and I was wondering HOW TO get pure data to run on Honeycomb 3.1. I would love to see if it will run my patches for Pd. I have about two weeks to test the device out before I am allowed to return it. The purchase was from Best buy in the US. So my goals are actually to get Pure Data and SuperCollider to run on the thing if possible. I see that there is a how to in the developer section but it seems a few months old and I am not sure the best way to proceed in building/compiling pd for this mobile device. Can someone point me in the right direction for getting this to work, or have any info on IF it will work at all? pp

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[PD-announce] completion-plugin new version
by yvan volochine 30 May '11

30 May '11

hi I rewrote autocompletion-plugin which is now called 'completion-plugin'. there are some cool new features: - new GUI (inspired from desire-data) - added an option file - auto-creation of completed objects (via Return key) - added a 'save_mode' so pd remembers keywords for send/receive/table, etc.. - added a nearly-bash-completion mode - completions update as you type ... there is a video demo there: http://vimeo.com/23557543 you can grab the code there: http://github.com/gusano/pd_stuffs/tree/master/gui-plugins/completion requirements: - pd-0.43 - tcl8.5 I could test it on linux and osx only. OSX note: there are some focus problems with tcl8.5 (x11), but not with tcl8.5 built with aqua support. as usual, bug reports are welcome ;) cheers, _y _______________________________________________ Pd-announce mailing list Pd-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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Re: [PD] euclidean rhythms
by Matt Barber 29 May '11

29 May '11

> > I had a quick read of the paper just now. I might have missed the > point altogether, but from what I understand, the results that he gets > from the Euclidian algorithm are the same (if you accept a rotation > pattern as being equivalent) as what you'd get from the simple > rounding of fractions. > > In other words: let's say you want 5 beats in a grid of 12 (or a > 12-sided polygon, if we use his graphical representation), the exact > spacing between two beats would be 12/5, or 2.4. > > The first beat would be 0*2.4= 0. > The second beat would 1*2.4 = 2.4, rounded to 2 > The third would be 2*2.4 = 4.8, which we round to 5. > The fourth would be 3*2.4= 7.2, which we round to 7. > The fifth would be 4*2.4 = 9.6, which we round to 10. > > We now have the pattern x.x..x.x..x. Sorry to be late to this discussion, but: Another way to look at this would be a cycle of the intervals 5 or 7, mod 12. Let's look at 7: 0 7 2 9 4 (mod 12, remember) collecting this yields: x.x.x..x.x.. (a rotation of the above). Note that 5 and 7 are coprime to 12 so you can keep going if you want to, but this is also how the standard pentatonic/diatonic scales are generated in a 12-tone universe. All of this is really well-known in scale theory, of course, and Milton Babbitt formalized the isomorphism between pitch/interval/octave and time-point/duration/meter (although, if you take Bartok's music seriously it would appear he'd been thinking about it explicitly in those terms long before). An interesting principle would be to use the nearest number to half the modulus as the generator (higher or lower: they're isomorphic when you make cycles of them in a modular system). So in 12 you have 5 or 7, in 16 you have 9 or 11, in 9 you have 4 or 5. As in scale theory, using patterns like these creates predictable distributions in the modulus for cycles of given lengths. Matt > > The way I would do it would be to store the pattern in table; > calculate the slice size (e.g. 12/5), then multiply successfully by > values from 0 to n-1 (0 to 4, since we want 5 divisions of 12), round > that, and then store a "1" at the rounded index values. > > I'm sure there are plenty of more elegant methods. > > - martin > > > > On 25 May 2011 22:13, Cody Loyd <codyloyd(a)gmail.com> wrote: > > Posted this on the PD forum.. but haven't heard anything yet so i > > thought I'd try here as well. > > > > Euclidean Rhythms > > > > I am interested in implementing something like THIS: > > > > http://www.hisschemoller.com/ > > > > in PD. > > > > I understand the algorithm for generating the rhythms on paper, but > > i'm not sure how in Pd to go about doing it. ?I'd imagine that it > > would involve some pretty heavy 'list surgery' and I'm not too sure > > how to go about doing it. > > > > This website: > > > > http://ruinwesen.com/blog?id=216 > > > > gives a little more info on how the algorithm works (especially in the > > PDF he links to, page 2 has the relevant example), and talks about > > coding the thing in Lisp, but i can't figure it out in PD. > > > > any hints? > > > > _______________________________________________ > > Pd-list(a)iem.at mailing list > > UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list > > >

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can't change resolution of camera with pix_video on Linux
by Matteo Sisti Sette 29 May '11

29 May '11

Hi, Here Gem 0.92.3 on Ubuntu 10.04 and Pd Vanilla 0.42.5. When I try to send a "dimen ..." message to [pix_video] to change the resolution, even if I try to set a resolution that is supported by the camera, it always stays at 160x120. I always get this message on the console: v4l2: changed size from MxN to 160x120 where M and N are the values I try to set. This works on Windows and Mac (on Windows even on the same computer). Has anybady faced the same problem? Any suggestion to get it to work? Thanks m.

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function key not reported with [HID] in OSX
by James Dunn 28 May '11

28 May '11

Hi list, is there any way of receiving the function key when it is pressed in OS X? [hid] doesn't report it. I'm using pd-extended 0.42.5 with 10.6 thanks James

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How to avoid the message "setting pattern to default" with folder_list
by Matteo Sisti Sette 27 May '11

27 May '11

Hi, I'm using [folder_list] and when I open the patch, for every instance of [folder_list] that exists, I get the following message on the console: setting pattern to default: /path/to/the/patch/folder At first I was using just [folder_list] and for each instance I got two messages: setting pattern to default: /path/to/the/patch/folder/* setting pattern to default: /path/to/the/patch/folder Now I've replaced each [folder_list] with [folder_list /] (I always set the pattern dynamically, anywa) and I got rid of the first messge but the second one persists. Is there any way to avoid printing this message? I want to keep the output to the console as clean as possible, so that when there is a real error I can see it. Thanks m.

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Preventing pix_image to eat up all CPU
by Matteo Sisti Sette 27 May '11

27 May '11

Hi, Has anybody ever used a considerable number of [pix_image] objects in the same patch? If I do so, even if I don't load any image on any of them and even if they are all "disconnected" (meaning they are not receiving the gemlist), they eat up a lot of CPU. With 64 pix images doing nothing Pd is already eating up 75% of my dual core. I wonder if anybody has run into the same issue, especially on Linux and found any workaround. I'm completely stuck because I need to have a few images pre-loaded and at any moment, show one of them (and I can't dynamically load them with an "open" message on only one [pix_image], because loading is threaded). This shouldn't be cpu-consuming at all, as I'll always make only one image visible, but pix_image is consuming CPU merely for existing. GEM: ver: 0.92.3 GEM: compiled: May 30 2010 Ubuntu 10.04 Thanks m.

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pd-0.42 extended +nameclashes
by rainer _ 27 May '11

27 May '11

Hi, I have a problem with pd-extended and maxlib scale vs. GEM scale object. In fact I need the maxlib scale, but GEM scale is loading. I have tried to change the startup order to load libs - with no effect. Also I have tried to name it [maxlib_scale...] as mentioned somewhere in the mailinglist archives - also with no effect. What is the correct workaround of the nameclashing problem in pd-extended???? thx rainer

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Re: [PD] euclidean rhythms
by Patrice Colet 27 May '11

27 May '11

hello, with [list-tuplet] it's possible to do such thing by declaring 12 beats and putting five items in the input list [beats 5, ft1 500( | [s tuplet] [] | [metro 500] | [blah blah blah blah blah( | [s tuplet] [r tuplet] | [list-tuplet] | [print] this will print 'blah' each 1.2 second ----- news(a)petervenus.de a écrit : > Hello! > i also found this app by hisschemoeller very inspiring. > i looked at your examples and found the solutions with writing > the steps into an array quite easy and straight forward, compared > to the effort needed when using lists. > the patterns actually look the same, compared to the ones created > in hisschmoellers`flash app and the distribution is just mirrored. > so just changing the read-direction of [counter] and there you are. > > peter > > > > > -----Ursprüngliche Nachricht----- > Von: "martin brinkmann" <mnb(a)martin-brinkmann.de> > Gesendet: 26.05.2011 11:41:49 > An: "Martin Dupras" <martindupras(a)gmail.com> > Betreff: Re: [PD] euclidean rhythms > > On 05/26/2011 01:29 AM, Martin Dupras wrote: > > > In other words: let's say you want 5 beats in a grid of 12 (or a > > 12-sided polygon, if we use his graphical representation), the > exact > > spacing between two beats would be 12/5, or 2.4. > > > > The first beat would be 0*2.4= 0. > > The second beat would 1*2.4 = 2.4, rounded to 2 > > The third would be 2*2.4 = 4.8, which we round to 5. > > The fourth would be 3*2.4= 7.2, which we round to 7. > > The fifth would be 4*2.4 = 9.6, which we round to 10. > > > > We now have the pattern x.x..x.x..x. > > though the flash app (at hisschemoeller.com) > produces soemthing like x..x..x.x.x. > the number and length of rests is the same in this case, > but the distribution is different. if you, instead of > rounding, just cut the fractional part, you get the same > result as the flash app, only mirrored, but this > seems not to work for other numbers. > > i have attached my own quick and dirty > itterative attempt, but i think it should also > be possible to implement with operations on lists, > like in the ruinwesen example. but i am not that familliar > with this in pd... > > bis denn! > martin > _______________________________________________ > Pd-list(a)iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list -- Patrice Colet

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Pd-list May 2011