Pd-list November 2013

pd-list@lists.iem.at

85 participants
103 discussions

Re: [PD] measuring entropy of a signal?
by Charles Z Henry 27 Nov '13

27 Nov '13

Hi Ronni, I've been traveling and I was unable to say much about the book at the time. This book seems to be an original work--I think it's a little strange that most of the references are the original works about entropy, fractal dimension, and the like. I would have liked to see some references to journal articles where his ideas about entropy, etc.. are published. Bader goes into great depth about origins and roots for trying to apply entropy and fractal dimension. I think you'll like the book--and I'm glad to hear you're doing more with these interesting topics. Bader's entropy definitions are a basic approach based on box-counting methods (and that's the method of calculation as well). I think it lacks some analytical treatment, that would be necessary to show the calculations converge to something exact that makes sense. On Mon, Nov 25, 2013 at 10:29 AM, Ronni Montoya <ronni.montoya(a)gmail.com>wrote: > Oh thank you, im gonna get that book. > > > I been working with entropy lately , experimenting new ways of using > entropy, and the way i discovered of using entropy in music in a > useful way is this way: > > First i generate strings of characters using L-systems. Then i use > shannon entropy to classify each string based on its level of entropy. > This sounds really cool. > > Strings with low entropy are gonna be very repetitive and strings with > high entropy are gonna be very random. In the middle level you can > have complex strings ( no so random and no so repetitive). > > Basically what i was trying is to use entropy as a way of doing > aesthetic measure of self generated sound structures , i get this idea > because once talking with a musician he told me that the function of a > musician is to make sonic structures that are no so repetitive and not > so random, in other words beauty is a point where sound structures are > no very repetitive and also not very random, you need a little bit of > repetitiveness and also you need surprise , so shannon entropy can be > a useful way of measuring this. > That's also a topic here, except it's mostly applied to instrumental sounds in the Bader book (much shorter time scales), but with the same basic trend: expressive and meaningful tones/timbres have some level of complexity between repetitive and random. > After making my classification of strings i sonify them at different > time scales, using different shannon entropy values depending on the > time scale and also in the sound im using ( for example for > percussions i use low entropy strings) .... > > > What do you think? if anybody is interested i can send the app, but i > made it in supercollider. > > > cheers > > > R. > > > > > 2013/11/23, Charles Z Henry <czhenry(a)gmail.com>: > > Hey Ronni, I realize you may not be interested in this topic any more, > but > > I recently came across a book with relevant sections on Entropy as > applied > > to music: > > Nonlinearities and Synchronization in musical acoustics and music > > psychology by Rolf Bader > > > > Chuck > > On Feb 26, 2013 4:11 AM, "ronni montoya" <ronni.montoya(a)gmail.com> > wrote: > > > >> Hi , i was wondering if anybody have implemented the shannon entropy > >> function in pd? > >> > >> Do anybody have tried measuring entropy of a signal? > >> > >> > >> cheeers > >> > >> > >> > >> R. > >> > >> _______________________________________________ > >> Pd-list(a)iem.at mailing list > >> UNSUBSCRIBE and account-management -> > >> http://lists.puredata.info/listinfo/pd-list > >> > > >

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pd-l2ork on mint olivia need advices
by t'es in t'es bat 27 Nov '13

27 Nov '13

Hello, i try to get pd-l2ork work on mint 15. It's like an ubuntu 13.04 but with many improvements So i try installing and i get a big issue with sudo apt-get install libgl1-mesa-dev libglu1-mesa-dev libglew-dev libftgl-dev libquicktime-dev i got that error: The following packages have unmet dependencies: libgl1-mesa-dev: Depends: mesa-common-dev (= 9.1.7-1ubuntu2) but will not be installed Depends: libgl1-mesa-glx (= 9.1.7-1ubuntu2) but 9.2.0 ~ git20131002 +9.2.2 eb55601-0ubuntu0sarvatt ~ raring must be installed Depends: libdrm-dev (> = 2.4.24) but will not be installed E: Unable to correct problems, broken packages mode "keep state" So impossible to compile. Is there a way to get a mesa lib working ? Does anybody succeed to use pd-l2ork works on Mint 15 ? Some tuto somewhere ? Thanks David LeP0le TNTB P/: 06 86 86 12 19 SKYPE/: tntb.net ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| http://www.tntb.net <http://www.tntb.net>http://www.databit.me http://www.circuitpixel.net /_̲̅̅̅̅_̲̅_─ ̲̲̲̲̲̲͋̅̅̅̅_̲̅ _ _̲̲̲̲̲̲̲̲̲̅̅̅̅̅̅̅_̲̲̲̲̲̲̲̲̅̅̅̅̅_̲̲̅ ̲__̲̅̅̅̅_̲̅_─ ̲̲̲̲̲̲͋̅̅̅̅_̲̅ _ _̲̲̲̲̲̲̲̲̲̅̅̅̅̅̅̅_̲̲̲̲̲̲̲̲̅̅̅̅̅_̲̲̅ ̲__̲̅̅̅̅_̲̅_─ ̲̲̲̲̲̲͋̅̅̅̅_̲̅ _ _̲̲̲̲̲̲̲̲̲̅̅̅̅̅̅̅_̲̲̲̲̲̲̲̲̅̅̅̅̅_̲̲̅ ̲__̲̅̅̅̅_̲̅_─ ̲̲̲̲̲̲͋̅̅̅̅_̲̅ _ _̲̲̲̲̲̲̲̲̲̅̅̅̅̅̅̅_̲̲̲̲̲̲̲̲̅̅̅̅̅_̲̲̅ ̲__̲̅̅̅̅_̲̅_

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libpd for iOS set-up
by Nick Arner 27 Nov '13

27 Nov '13

Hello all, I have been setting up my libpd project exactly as described in the "Making Musical Apps" book, but keep getting an error that "z_queued.h" can't be found...does anyone have any tips or suggestions? Thanks! Nick -- Nicholas Arner MSc in Music Technology by Research Department of Electronics University of York

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Re: [PD] Pure Data, libpd, help
by Ed Kelly 27 Nov '13

27 Nov '13

Hello Andrei. The Ninja Jamm patch has moved on a bit since then, but there are some things you should note. 1) Events can be encapsulated but audio paths cannot if you want the greatest efficiency from your target device (e.g. iPhone 4 - the minimum platform for Ninja Jamm). But try not to encapsulate below one level below the master patch, even for event-based subpatched, if you don't want to glitch. 2) you will probably have to write a few externals of your own if you cannot get the functions you need from vanilla Pd, and these need to be wrapped into the compilation of the app. Look at http://pdstatic.iem.at/externals-HOWTO/ for more info on how to write an external for Pure Data. Alternatively it is worth checking out the rjlib material from RJDJ at https://github.com/rjdj - v.good abstractions! I don't make the GUI for Ninja Jamm but... 3) the way a libpd patch is controlled by a GUI is by send and receive objects in Pd. In my experience it is normal to make the objects in the GUI non-callback - i.e. if the GUI objects receive a message from Pd they do not send it back to Pd, but if a message is sent to the Pd patch it can send one back to the GUI. I hope this helps. Best wishes, Ed Ninja Jamm - a revolutionary new music remix app from Ninja Tune and Seeper, for iPhone and iPad http://www.ninjajamm.com/ Gemnotes-0.2: Live music notation for Pure Data, now with dynamics! http://sharktracks.co.uk/ On Tuesday, 26 November 2013, 22:13, Andrei Branea <andrei.branea09(a)bathspa.ac.uk> wrote: Hi Ed, >My name is Andrei Branea and I recently graduated Creative Music Technology at Bath Spa University. > >I've been working with Pd during the last few years. Your Pd work is really impressive, I remember having discovered Metastudio a couple of years ago, when I was looking at projects presented at the PD conventions, and at the time the patches were above my level of understanding. > >I recently discovered your work for the Seeper Ninja Tune app. I would like to learn more about making and integrating Pd patches in apps using libpd, to get in touch with apps developers and propose the addition of procedural audio to their apps. > >I had a look at the screenshot of the patch (http://createdigitalmusic.com/files/2013/04/np-PD-patch-of-Ninja-Jamm-code-…), and I found it striking that so much is on the main patch without using encapsulation. I would appreciate if you could share your experience about current limitations, challenges related to communication between Pd and the operating system, and maybe other issues you have found essential in integrating Pd as audio engine. > >Please reply whenever you can spare a minute, it's not urgent, but actual insight to the development process and understanding of it is very valuable to me. > >All the best, > >Andrei. > >

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96khz and metronome tempi
by Ali Momeni 27 Nov '13

27 Nov '13

hi all, i'm trying to run pd 45-2 on os x 10.8, with a MobileIO 2882 audio interface set to 96khz; when i set the sampling rate to 96khz in the PD preferences and apply, a 'metro 1000' puts out bangs every 2seconds or so (!!!). when i set the sampling rate back to 44.1, all is well. my search of the archive reported lots of postings regarding writesf~ and 96khz but i didn't come across anything about event scheduler issues. is this problem particular to my audio interface/os/pd-version or have others seen it? thanks, a

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why overlaps affect frequency of [osc~]?
by Alexandre Torres Porres 26 Nov '13

26 Nov '13

Howdy, ever tried to compute a hann window inside a subpatch where the FFT is happening? And then if you're overlapping it by 4, do you see that only 1/4 of the cycle from [osc~] came up? That means the [osc~] frequency was 1/4 what it should be... Now, why and how does it happen? I just have no clue at all. Cheers Thanks

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gridflow archlinux
by Fero Kiraly 26 Nov '13

26 Nov '13

hallo, cant compile. any suggestions ? thanks fero

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best way of plotting distribution of events in logarithmic plot
by flad chester 26 Nov '13

26 Nov '13

Hi list, i was wondering which is the best way of plotting distribution of events in logarithmic plot in puredata. I have a patch that randomly triggers sound events at different frequencies and magnitude. I need to plot these events in a logarithmic plot( frequencies vs magnitude) . Which is the easiest way of achieving this in pd? cheers Flad

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Connect Bluetooth devices
by sebarocker＠gmail.com 26 Nov '13

26 Nov '13

Hi everybody, I would like to connect my mobile with a pure data patch, my main objective is just get the strength of the signal, ie if the mobile is near the pc or far. Exist any object in pure date in order to achieve this? I was searching and found him and comport objects, but i couldn't manage to make it work. Thanks you! Cheers, Sebastián

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Scatter objects using [repeat]
by Antonio Roberts 26 Nov '13

26 Nov '13

Hi everyone, I'm looking for a way to scatter objects across a screen in GEM using [repeat] or a similar method that doesn't require creating several objects or using particles. The objects should stay in position until I specify another random position I've followed the advice of reading the XYZ coordinates from a text file (as seen here http://lists.puredata.info/pipermail/pd-list/2009-01/067439.html ) but this doesn't allow me to choose another XYZ coordinate unless I load another text file. Is there any other way to do this? -- ============================ antonio(a)hellocatfood.com http://www.hellocatfood.com ============================

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Pd-list November 2013