Pd-list November 2010

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127 participants
197 discussions

pix_opencv surf
by Jose Luis Santorcuato 10 Nov '10

10 Nov '10

Hi all, I'm working some time ago to open cv (Hangar), but I can not get the darwin pix_opencvsurf object does not come in the installer for both linux and mac osx, any ideas? Best regards José -- http://arselectronicachile.blogspot.com http://comunicacionnativa.blogspot.com/ http://www.myspace.com/santorcuato

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[PD-announce] libpd: An embeddable sound engine for Android, iOS, C, Java, and more
by Hans-Christoph Steiner 10 Nov '10

10 Nov '10

libpd has reached a 0.1 release, enabling developers to use Pd as a sound engine in their applications. Out of the gate, we have extensive code samples for Android 1.5 and later, plus the basic tools to work on iOS (recent armv7 recommended for now, with other devices soon). In the near future, embedding Pd patches inside tools like Processing/Java, OpenFrameworks/C++, and Python should be just as easy. The library is based on Pd vanilla, so this is not a fork of Pd; you can use patches in it just as you would in any other version. Developers will find the library, code snippets (for Android; iOS is coming), and even some handy abstractions: http://gitorious.org/pdlib/ To learn more: Article on the release at createdigitalmusic: http://bit.ly/libpdishere Group for discussing Pd on mobile, embedded, and using libpd: http://noisepages.com/groups/pd-everywhere/ End users with Android phones or tablets can try out packages now: http://gitorious.org/pdlib/pages/Packages ... in addition to patches from Chris detailed in the CDM post above. libpd available is thanks to the work of Peter Brinkmann, with testing, further development, documentation, and other contributions from the RjDj team (who are now adopting it in their future development work), Hans-Christoph Steiner, Chris McCormick (who has also added the ability to make HTML5 web interfaces), and Peter Kirn, along with members of the NYC Patching Circle at NYC Resistor. _______________________________________________ Pd-announce mailing list Pd-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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[PD-announce] /dev/art/#2 à Paris le 14/11/2010
by Jack 10 Nov '10

10 Nov '10

In french only (désolé pour le même mail provenant de différentes listes !). Pour une meilleure mise en page, vous pouvez consulter le PDF joint à ce mail : /dev/art/#2 Rencontres, discussions et échanges entre artistes et développeurs utilisant les nouvelles technologies de programmation (arts numériques, hacking, performances, etc.). Le 14 novembre de 14h à 18h au BlackBoxe 17 rue de la Chapelle / 75018 Paris Metro ligne 12 / Station Marx Dormoy ou Porte de la Chapelle 14h / 16h : rencontres, discussions et échanges autour des arts numériques, de la performance, du hacking et du développement d'applications et d'installations. 16h / 16h30 : Pot/apéro 16h30 / 18h : performance + présentation de Ariadna Alsina et Alejandro Olarte Suite électronique pour violon et guitare v2 Alejandro et Ariadna sont musiciens, ils évoluent depuis plusieurs années dans la musique électroacoustique improvisée ou composée. Leur parcours les emmène à jouer en solo, en formation ou en collaboration avec des artistes issus d'autres disciplines. Pour cette performance, ils utilisent les sonorités d'un violon et d'une guitare augmentée pour représenter différents moments poétiques contrastés en faisant appel à plusieurs modes de jeu et à différents paradigmes de synthèse. Alejandro utilise le logiciel Super Collider pour le traitement de l’audio numérique en temps réel. Ariadna utilise Max/MSP avec les mêmes finalités. Alejandro Olarte: Formé en Colombie à l’Université Nationale et en France au Conservatoire National Supérieur, Alejandro chercheur en électroacoustique s’intéresse aux nouvelles lutheries, à l’improvisation, à l’interaction avec la danse et le théâtre et à la programmation. Ariadna Alsina: Après une première étape de formation comme violoniste, Ariadna se consacre depuis quelques années à la composition électroacoustique et mixte. Formée en Sonologie à l’École Supérieure de Musique de la Catalogne (Barcelona), elle s’intéresse aux objets sonores et au field-recording, qu’elle étudie et utilise pour ses créations artistiques et musicales. Prochain rendez-vous /dev/art/#3 le vendredi 19 novembre de 19h à 23h au BlackBoxe / 17 rue de la Chapelle / 75018 Paris ++ Jack _______________________________________________ Pd-announce mailing list Pd-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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dbtorms + friends and negative dB values
by Matthias Blau 10 Nov '10

10 Nov '10

Dear list, is there any specific reason why dbtorms and friends do not take dB values <=0 as input? From my point of view (and that of most people I know), an object called dbtorms should do a dB to RMS conversion, e.g. convert -20 to 0.000001 in pd and not silently output zero as it does right now. Both pd internally and high-quality audio cards can do sensible things with numbers this low. Kind of reminds one of the Total Ozone Mapping Spectrometer (TOMS) bug http://earthobservatory.nasa.gov/Features/RemoteSensingAtmospher/remote_sen… which is frequently ranked among the top 10 historical software bugs with extreme consequences: It made NASA unaware of the antarctic hole in the ozone layer for years simply because the analysis software ignored ozone values below a certain threshold... So please pd developers, change this or give a good reason for not taking lessons from history. Best whishes, Matthias

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Re: [PD] Musical notation object on Pd
by jancsika＠yahoo.com 09 Nov '10

09 Nov '10

On Nov 7, 2010, at 11:49 PM, Mathieu Bouchard <matju(a)artengine.ca> wrote: On Sun, 7 Nov 2010, Caio Barros wrote: About the scale, do you have problems with midi note? I believe this would be the most compatible with other functions. Well, normally I use midi note numbers or a transposed version thereof (especially : midi note minus a multiple of 12), but in this case, I have only implemented «white keys», and then, I wonder what you expect the interface to be, to implement the «black keys», and whether those numbers should be displayed as dièse or bémol. You could have a method that sets accidental type. Zero for flats, 1 for sharps. ( I suppose you could also suppress accidentals but then you'd be notating the pitches incorrectly, and I don't see the purpose of doing that. ). I think I will use the vertical space as something as equally divided as possible into midi notes, and then display all of them as either unaltered or dièse. Later, the latter part can be modified to show notes in any other chosen scale, maybe... And I want an option to hide the clef de Sol (thinking of it in the context of using it as a [#many] component, hypothesising a future in which [#many] supports an abstraction name as its $1). _______________________________________________________________________ | Mathieu Bouchard ---- tél: +1.514.383.3801 ---- Villeray, Montréal, QC _______________________________________________ Pd-list(a)iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list

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Re: [PD] Musical notation object on Pd
by patko 09 Nov '10

09 Nov '10

The armature could be set by telling which scale is played from C major 0 then is no alteration, let says we follow the fifth cycle, then 1 would be one sharp, and then G major, 2 two sharps and then D major, etc, when we arrive after F sharp we come to bémols, so 7 would be like -6 the D bémol major scale, 8 or -5 A bémol, etc, ... is that clear? If you have exotic scale, the structure will have to be set somwhere like the major scale, for setting the armature the same way. If you have an accidental alteration, just use another flag or message than for setting armature. ----- "Mathieu Bouchard" <matju(a)artengine.ca> a écrit : > On Sun, 7 Nov 2010, Mathieu Bouchard wrote: > > > Well, normally I use midi note numbers or a transposed version > thereof > > (especially : midi note minus a multiple of 12), but in this case, I > > > have only implemented «white keys», > > Oupse, to be clear, I mean that I numbered them > > 0=Do 1=Ré 2=Mi 3=Fa 4=Sol 5=La 6=Si 7=Do > > but that I intend to change that. > > > _______________________________________________________________________ > | Mathieu Bouchard ---- tél: +1.514.383.3801 ---- Villeray, Montréal, > QC > > _______________________________________________ > Pd-list(a)iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list -- Patrice Colet

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-lib segfault : tool to help reporting crashes (linux only)
by Mathieu Bouchard 08 Nov '10

08 Nov '10

I don't remember whether I posted this before. It's an external that doesn't define any classes, but installs a crash report handler that prints to the terminal. It requires <execinfo.h> which is linux-specific. It decodes C++ symbols using <cxxabi.h> (provided by glibc). This means you don't need to run gdb to get a basic listing of what happens. However you will still need gdb if you need to know what the function arguments were. If you run an older version of GridFlow (9.11 or earlier) you will need to ensure "segfault" appears after "gridflow" in the Startup menu. If not, the order does not matter (unless you need to trap a crash at load-time). ------------------8<--------cut-here--------8<------------------ // segfault.cxx 1.0 by Mathieu Bouchard, 2010 // compile with : g++ segfault.cxx -shared -o segfault.pd_linux #include <stdio.h> #include <string.h> #include <unistd.h> #include <execinfo.h> #include <signal.h> #include <cxxabi.h> static void fault (int sig) { const char *s; if (sig==SIGSEGV) s="Segmentation Fault"; if (sig==SIGABRT) s="Abort"; if (sig==SIGILL) s="Invalid Instruction"; if (sig==SIGBUS) s="Bus Error"; fprintf(stderr,"\n------------------------------ caught %s\n",s); #if defined(MACOSX) || defined(__WIN32__) fprintf(stderr,"unhandled exception\n"); #else void *array[100]; char demangled[1024]; size_t length=1024; int status; int nSize = backtrace(array,100); char **symbols = backtrace_symbols(array, nSize); // for (int i=0; i<nSize; i++) fprintf(stderr,"%d: %s\n",i,symbols[i]); for (int i=1; i<nSize; i++) { char *a = strchr(symbols[i],'('); char *b = strchr(symbols[i],'+'); if (a&&b) { char mangled[1024]; sprintf(mangled,"%.*s",int(b-a-1),a+1); if (abi::__cxa_demangle(mangled,demangled,&length,&status)) fprintf(stderr,"%3d: %.*s\n",i,int(length),demangled); else fprintf(stderr,"%3d: %s\n",i,symbols[i]); } else fprintf(stderr,"%3d: %s\n",i,symbols[i]); } #endif fprintf(stderr,"-------- crash report displayed by segfault.pd_linux 1.0 (by matju)\n\n"); signal(sig,SIG_DFL); _exit(128+sig); } extern "C" void segfault_setup (void) { signal(SIGSEGV,fault); signal(SIGABRT,fault); signal(SIGILL, fault); signal(SIGBUS, fault); } _______________________________________________________________________ | Mathieu Bouchard ------------------------------ Villeray, Montréal, QC

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Invitation to connect on LinkedIn
by Tim Vets via LinkedIn 08 Nov '10

08 Nov '10

LinkedIn ------------Tim Vets requested to add you as a connection on LinkedIn: ------------------------------------------ Barry, I'd like to add you to my professional network on LinkedIn. - Tim Accept invitation from Tim Vets http://www.linkedin.com/e/-24tqmf-gg9q1yb6-5p/Z-E7tbU-3QZNZY3MUQJPpadq/blk/… View invitation from Tim Vets http://www.linkedin.com/e/-24tqmf-gg9q1yb6-5p/Z-E7tbU-3QZNZY3MUQJPpadq/blk/… ------------------------------------------ Why might connecting with Tim Vets be a good idea? Have a question? Tim Vets's network will probably have an answer: You can use LinkedIn Answers to distribute your professional questions to Tim Vets and your extended network. You can get high-quality answers from experienced professionals. http://www.linkedin.com/e/-24tqmf-gg9q1yb6-5p/ash/inv19_ayn/ -- (c) 2010, LinkedIn Corporation

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Pd workshop in Vienna (Metalab), 27.+28.Nov
by Georg Holzmann 07 Nov '10

07 Nov '10

Hallo! At the 27.+28.11.2010 there will be a free Pure Data workshop at the Metalab (metalab.at) in Vienna, Austria. For further information see the wiki page: http://metalab.at/wiki/Pd-Workshop ! So if you are in Vienna or somewhere around in central europe, you are invited to join us ! (and please add your name to the wiki, so that I can somehow estimate how many people will come ...) Have fun, LG Georg -- http://grh.mur.at

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OpenLab OpenDay and Night next Saturday 13th Nov, 2010 @ The Apiary
by Robert Munro 07 Nov '10

07 Nov '10

Sorry 4 x, pls >> The next OpenLab OpenNight is an afternoon as wlll, it is the 1 yr anniversary event, and we are having presentations in the afternoon before performances later on about 7pm. It's scheduled to kick off at 3pm Saturday 13th November @ The Apiary (formerly The Hackney Rose) (Suggested £2 donation), 458 Hackney Rd, E2 9EG. As usual it is open to everyone - so if you would like to present or perform then it not too late ... as always, put your name up on the WIKI :) http://www.pawfal.org/openlabwiki/index.php?page=OpenNight Line up so far is:- *Presentations:* * Claude Heiland-Allen/ClaudiusMaximus : z→z²+c generative fractal music using periodic attractors in the Mandelbrot Set * Rob Munro : Android drawing app & Android NDK * jag: On periodic computable functions. * Emmanuel Revah: Still Video. *Performances:* * Rob Munro : More PD & Android stuff. * Claude Heiland-Allen/ClaudiusMaximus : RDEX audio/visual performance using reaction-diffusion systems * zambari / eqav : overdriven transistors sequenced in an old school - acid techno style * Ryan Jordan : Splittercore with DiY Punk Elektonics, and maybe a laptop Hope to see you there :) best rob FB Event <http://www.facebook.com/event.php?eid=168670443145445> : Facebook Event FB Group <http://www.facebook.com/group.php?gid=107673199262882> : Facebook Group <http://www.facebook.com/event.php?eid=168670443145445>

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Pd-list November 2010