Pd-list November 2015

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69 participants
105 discussions

Re: [PD] oscillators (osc~ / cycle~) not working well in FM?
by Christof Ressi 23 Nov '15

23 Nov '15

Hey Alexander, that's very interesting! What's funny: when using [metro] + [vline~] instead of [phasor~], the drift is clearly slower. As you noted, PM seems to be stable (It is noteworthy that DX7 actually uses PM for better stability). My guess it, it has something to do with rounding errors. And I can somehow intuitively see how this will affect FM but not PM: Let's imagine a huge truck on a highway. On the truck is another car which can move forwards and backwards. And then there's a motercycle going at a fixed speed. FM -> The car would remain fixed on the truck and someone would press and release the gas pedal of the truck periodically (starting from the same speed as the motercycle). If the amount of pressure/relief is not 100% precise, you can't really tell where exactly the car+truck will be after a couple of miles, even if the timing of manipulating the gas pedal is 100% exact, because small errors in speed will immediately result in small but lasting errors in location. So there will probably be a slow drift over time between the truck+car and the motercycle. PM -> The truck moves at a fixed speed (same as the motorcycle) while the car on the truck goes forwards and backwards at a fixed intervall. The car is guaranteed to be in the middle of truck every N seconds. So even if the movement of the car might not be perfect, the location is 100% predictable at least every N*k seconds and this means that it will stay in phase with the motorcycle. Does this make sense? :-D Can anyone explain why this kind doesn't in SC or Max??? (I didn't test it myself) Larger look-up tables? More precision? Gesendet: Samstag, 21. November 2015 um 17:06 Uhr Von: "Alexandre Torres Porres" <porres(a)gmail.com> An: "Roman Haefeli" <reduzent(a)gmail.com> Cc: "pd-list(a)lists.iem.at" <pd-list(a)lists.iem.at> Betreff: Re: [PD] oscillators (osc~ / cycle~) not working well in FM? By the way, I was wondering and thinking if this was a particularity of the "0Hz carrier FM", that is: a FM patch with no carrier frequency. But I tried other regular FM patches with a carrier signal and could see that it didn't keep static as well. On the other hand, the same patch implemented as Phase Modulation (PM) maintains a static waveform in Pd. In my last example, the patch I had as "waveshaping" could be thought of as a "0hz PM" patch. Now, I tested the PM stability with the [phasor~] + [cos~] architecture and also with [cycle~]. The FM instability happened with both [osc~] and [cycle~]. In Max, a FM patch with [cycle~] is stable. In short, there's something fishy with FM in Pd... cheers 2015-11-21 13:25 GMT-02:00 Alexandre Torres Porres <porres(a)gmail.com>: > Can you elaborate? Not easily I'm afraid, so I'll try to keep it simple: it's a demonstration on the relationship between FM and waveshaping, compare now both patches in my new example. The waveshaping does not change through time. But let me attempt to reason why it should keep static - it's like any other FM patch, once you have set the parameters, the waveform must be static and not change in time. My tests with supercollider and Max had a good result (waveform kept static). I also tried in Pd with cycle~ and in the newest vanilla. cheers 2015-11-21 11:26 GMT-02:00 Roman Haefeli <reduzent(a)gmail.com>: On Sat, 2015-11-21 at 02:59 -0200, Alexandre Torres Porres wrote: > howdy, attached there's a patch where I was experimenting with FM > > > the waveform shouldn't change with time, but it does. Give it a while > though, 30 seconds is enough to hear a change in tone quality, then > resseting the oscillator phase brings it back to where it was > > > don't know why it does come out of phase, an equivalent patch in SC > and Max does not get out of phase... I hear and see what you mean. Interesting question. Frankly, I don't quite understand why it is expected to stay in phase. Can you elaborate? Roman _______________________________________________ Pd-list(a)lists.iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list[http://lists.puredata.info/list… _______________________________________________ Pd-list(a)lists.iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list[http://lists.puredata.info/list…

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Efficient FIFO in Pd: How?
by Roman Haefeli 22 Nov '15

22 Nov '15

Hi all I'm looking for a way to implement a FIFO buffer in Pd. I'd like it to be able enqueue messages with an arbitrary number of elements in order to retrieve them in the same order later. I came up with three different methods, but they are all either slow at enqueuing or at dequeuing or even both. It seems for a quick implementation you need something like a ring buffer, but I can't think of any method that would work for symbolic elements, too (as opposed to numbers). Attached patch comparison.pd compares the methods. Isn't there really a O(n) implementation as opposed to O(n^2)? Roman

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oscillators (osc~ / cycle~) not working well in FM?
by Alexandre Torres Porres 21 Nov '15

21 Nov '15

howdy, attached there's a patch where I was experimenting with FM the waveform shouldn't change with time, but it does. Give it a while though, 30 seconds is enough to hear a change in tone quality, then resseting the oscillator phase brings it back to where it was don't know why it does come out of phase, an equivalent patch in SC and Max does not get out of phase... anyway, that's it cheers

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Re: [PD] [hdplay~] problem
by Dan Wilcox 20 Nov '15

20 Nov '15

Judging from the [readsf~] help patch, [readsf~] takes two optional arguments: 1. number of channels 2. buffer size per channel in bytes I think argument 2 might be worth investigating ... -------- Dan Wilcox @danomatika <https://twitter.com/danomatika> danomatika.com <http://danomatika.com/> robotcowboy.com <http://robotcowboy.com/> > On Nov 19, 2015, at 4:55 PM, pd-list-request(a)lists.iem.at wrote: > > From: Achim Bornhoeft <achim(a)bornhoeft.org <mailto:achim@bornhoeft.org>> > Date: November 19, 2015 at 12:32:11 PM MST > To: Py Fave <pyfave(a)gmail.com <mailto:pyfave@gmail.com>> > Cc: "pd-list(a)iem.at <mailto:pd-list@iem.at> List" <pd-list(a)iem.at <mailto:pd-list@iem.at>> > Subject: Re: [PD] [hdplay~] problem > >> also i see in soundfiler help: >> >> read - resize should help >> >> -maxsize <maximum number of samples we can resize to> > > The abstraction uses [readsf~] because I want to play the soundfiles directly from disk without reading them into an array. > How can I change the soundfiler -maxsize in this case ? > Achim

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[PD-announce] Interactivos?'15: Material Cultures in the Digital Age. Call for collaborators
by Difusion Medialab-Prado 20 Nov '15

20 Nov '15

Interactivos?'15: Material Cultures in the Digital Age. Call for collaborators Call to collaborate in the project workshop *Interactivos?'15: Material Cultures in the Digital Age* <http://medialab-prado.es/article/interactivos15-culturas-materiales-en-la-e…>, that will be carried out *from **December 2 to 16, 2015*. Collaborators will participate in the production of the selected projects <http://medialab-prado.es/article/interactivos15-culturas-materiales-en-la-e…>. The workshop is complete with a series of conferences and meetings and takes place in the framework of the project Common Objects <http://medialab-prado.es/article/objetos-comunes>, in cooperation with Constant vzw <http://www.constantvzw.org/site/?lang=en>. Free registration. Deadline: *November 30*, 2015.    Medialab-Prado offers free lodging to collaborators in youth hostels during the workshop (limited seating, shall on request and by order of registration).The last day to ask for a place is November 23. More information: http://medialab-prado.es/article/interactivos15-culturas-materiales-en-la-e… -- Medialab-Prado Plaza de las Letras Calle Alameda, 15. 28014 Madrid T. 912 191 157 difusion(a)medialab-prado.es FB MedialabPradoMadrid Twitter: <http://www.facebook.com/MedialabPradoMadrid%3C/a>@medialabprado <https://twitter.com/medialabprado> "Este correo y sus documentos adjuntos pueden contener información confidencial y/o privilegiada que sólo podrá ser utilizada por su destinatario para el fin del cual es objeto el presente correo. Si usted no es el destinatario o lo ha recibido por error rogamos nos lo comunique y proceda a su eliminación advirtiéndole que toda copia, revelación, distribución y/o cualquier otro uso queda terminantemente prohibido pudiendo incurrir en responsabilidades legales. En cumplimiento de lo dispuesto en el artículo 5 de la Ley Orgánica 15/1999, de 13 de diciembre, de protección de datos de carácter personal, MADRID DESTINO CULTURA TURISMO Y NEGOCIO, S.A. (en adelante, MADRID DESTINO) le informa que sus datos personales o de contacto profesional facilitados serán incorporados en nuestros ficheros de datos personales con la finalidad de gestionar el envío de comunicaciones informativas, así como la relación promocional, comercial y/o negocial (incluyendo, como tal finalidad, la formalización y gestión de contratos y la gestión contable, fiscal, laboral y administrativa) que MADRID DESTINO pudiera mantener con usted. Si lo desea, puede ejercer sus derechos de acceso, rectificación, cancelación y oposición dirigiéndose a MADRID DESTINO CULTURA TURISMO Y NEGOCIO, S.A. sita en Madrid, c/ Montalbán 1, 7ª planta, 28014. El medioambiente es cosa de todos: antes de imprimir este e-mail, piense bien si es necesario hacerlo. This email and the attached documents may contain confidential and/or privileged information for the exclusive use of the person named above for whom this message is intended. If you are not the designated recipient or have received it by mistake, please notify us and delete this message. You are also hereby notified that copying, revealing, distributing and/or using the contents of this email in any other way is strictly prohibited and may have legal consequences. In accordance with the stipulations of Spanish Data Protection Law, MADRID DESTINO CULTURA TURISMO Y NEGOCIO, S.A. (hereinafter, MADRID DESTINO) hereby informs you that the personal or professional contact details you provide will be recorded in our personal detail files for the purposes of sending announcements and notices and for managing the promotional, commercial and/or business relationship (including, for such purposes, the formalisation and management of contracts as well as accounting, fiscal, labour and administrative management) that MADRID DESTINO may have with you. If you wish, you may exercise your rights of access, rectification, cancellation or objection by writing to MADRID DESTINO CULTURA TURISMO Y NEGOCIO, S.A. situated at c/ Montalbán 1, 7ª planta, 28014 Madrid. We are all responsible for the environment: please think before you print this email.” _______________________________________________ Pd-announce mailing list Pd-announce(a)lists.iem.at http://lists.puredata.info/listinfo/pd-announce

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[PD-announce] n-Track Studio DAW now supports Pure Data patches
by Athos Bacchiocchi 20 Nov '15

20 Nov '15

Hi all, Sorry for the "advertisement" post, but I thought this would be of interest to some of you. I'm a happy pure data user, but I also work as a developer at n-Track Software, a small audio software house based in Rome. Our main product is n-Track Studio, a cross-platform DAW - available on Mac, Windows, iOS and Android - and targeted to hobbyists, semi-professional musicians, researchers and students. Many of us at n-Track shared a particular interest (enthusiasm!) in Pure Data, so we worked to add support for PD patches right in n-Track Studio (through LibPd). In this way audio effects or generators built with PD can now be easily added to an audio track or controlled using our MIDI pianoroll and step-sequencer, as you would do with a VST plugin. We developed a way to expose the patch's controls in a custom gui, trying to make this process as seamless as possible. At the moment we only support patches built using PD vanilla, and a limited subset of gui objects: sliders, canvases, radio buttons, buttons and toggles. We are still working to improve the integration, and right now we have a beta version of n-Track Studio that you can download an try, at: http://it.ntrack.com/download.php A guide is in the making to help users create compatible pd patches for n-Track Studio. In the meanwhile, this temporary FAQ may be of help: http://it.ntrack.com/faq.php?category=13&showAll=1 It would be great if any of you decided to give this a try and let us know what you think about it. Any feedback (questions, comments, bug reports, new ideas, criticism) would be greatly appreciated! I hope you enjoy this as much as we did developing it, and thank you for reading through this. Athos

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brute force art
by Py Fave 20 Nov '15

20 Nov '15

hello list , can someone tell me what he thinks about this patch, made in pd. https://github.com/pyfave/brute_force_art i am looking into improving it, expanding it. any hint welcome sorry for my english peace py

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New postgraduate programme "exMedia" – Academy of Media Arts Cologne
by Dirk Specht 20 Nov '15

20 Nov '15

(german text version below) Kunsthochschule für Medien Köln – Academy of Media Arts Cologne exMedia experimental – expanded – existential The Academy of Media Arts Cologne recently founded the new department exMedia that integrates Design, Coding, Space, Sound, Animation and Games. Applications for a 4 semester prostgraduate progamme starting in fall 2016 are accepted until 11. January 2016. Applicants should have a Bachelor in Design, Architecture, Urbanism, Sound, Computer Science, Art, Theory/Sciences or Social Activism. Alternatively five years of experimental and research oriented professional experience is accepted. Profile exMedia http://exmedia.khm.de/en/profile/ Information on the study programme http://www.khm.de/en/study/media-and-fine-art-degree/ Information on the postgraduate programme at the Academy of Media Arts http://www.khm.de/en/study/4-semester-programme/#c127 Information on how to apply http://www.khm.de/en/study-programme/application/ exMedia experimental – expanded – existential exMedia is an academic group which shares the conviction that – experimental aesthetic projects and socio-technical research lead to an – expansion of scholarly and creative horizons that effectively address – existential human conditions in the 21st century. exMedia integrates design, coding, sound and animation. exMedia connects critical reflection with experimental approaches based on fundamental questions raised by individuals and society. exMedia looks for self-motivated students able to take artistic risks and open to the unknown. exMedia works on the conditions of a technology driven culture and addresses its future including post-media perspectives. exMedia is involved with the following fields: Maker Culture, Hybrid Space, Cognitive and Transformation Design, Sound Studies, Experimental Coding, Politics of networks and machines, Experimental 2D/3D Animation and Auteur Games. In our postgraduate programme we work with students and fellows from a wide range of backgrounds such as architecture, urbanism, design, sound, computer science, animation, art, theory and social activism. The project-based studies environment challenges students to self- initiate individual research and develop complex and perhaps yet uncharted subjects and profiles. We run specialized sound and 2D/3D animation laboratories to ensure enthusiastic exploration and experimentation to further advance student’s imagination and talents. We also work with widely available tools such as electonic microcontroller, lasercutter, motion-capture, drones, 3D scanner/printer, CNC-milling machine. exMedia´s alumni engage across a wide terrain of creative fields. Professional prospects will be found both in the fields of independent and corporate work, at agencies as well as in research or start ups. exMedia offers an unsurpassed opportunity of experiencing an exhilarating freedom of an art academy without being subjected to the ferocious rules of the art market. … … … … … … … … … … … … … … … … … … … … … … … … … … Kunsthochschule für Medien Köln – Academy of Media Arts Cologne exMedia experimental – expanded – existential An der Kunsthochschule für Medien Köln wurde der neue Bereich exMedia gegründet. Er verbindet Design, Coding, Raum, Sound, Animation und Games. Gegenwärtig werden Bewerbungen für das postgraduale 4-semestrige Studium angenommen. Ende der Bewerbungsfrist: 11.01.2016, Studienbeginn: Wintersemester 2016 Aufgefordert zur Bewerbung sind BachelorabsolventInnen aus Design, Architektur, Urbanismus, Sound, Informatik, Kunst, Theorie und Aktivismus. Alternative Zugangsvoraussetzung: In diesen Fächern experimentell und forschend Arbeitende mit fünf Jahren Berufserfahrung. Profil exMedia http://exmedia.khm.de/profil/ Informationen zum postgradualen Programm http://www.khm.de/studium/4-semestriges-studium/ Informationen zur Bewerbung http://www.khm.de/studium/bewerbung/ exMedia experimental – expanded – existential exMedia is an academic group which shares the conviction that – experimental aesthetic projects and socio-technical research lead to an – expansion of scholarly and creative horizons that effectively address – existential human conditions in the 21st century. Die Fächergruppe exMedia integriert die Fächer Design, Coding, Raum, Sound, und Animation. Kritische Reflektion und experimentelle Praxis verbinden sich in der Projektarbeit. Ausgangspunkte sind individuelle Fragestellungen der Studierenden, gesellschaftliche Entwicklungen und eigenständige Forschung. Zu den Arbeitsfeldern der Fächergruppe zählen Maker Kultur, Hybrid Space, Cognitive und Transformation Design, Klangforschung, experimentelle Informatik, Politik der Netze und Maschinen, Animation und Games. Das postgraduale Programm richtet sich an BewerberInnen aus diversen fachlichen Bereichen wie Architektur, Urbanismus, Design, Sound, Informatik, Kunst, Theorie und Aktivismus. Erwartet wird die Fähigkeit, komplexe Themen in einem selbstbestimmten Projektstudium zu bearbeiten. Die Fächergruppe exMedia ermutigt die Studierenden zur Entwicklung neuer Profile, statt den Erwartungen von gängigen Berufsbildern und aktuellen Marktlagen zu entsprechen. Künftige Wirkungsfelder der Absolventen reichen von der Selbständigkeit über Tätigkeit in Agenturen und Unternehmen bis zur Forschung. Das einzigartige Studienangebot der Fächergruppe nutzt die Freiräume einer Kunsthochschule, ohne sich den Zwängen des Kunstbetriebs zu unterwerfen. Insbesondere werden Fragestellungen und Bearbeitungsformen gefördert, die ihren Ort nicht schon von vorne herein kennen. Die Projekte werden explorierend und entwurfsorientiert mit aktuellen Werkzeugen entwickelt wie Elektronik-Mikrocontroller, Lasercutter, CNC Modellfräse, 3D Scanner/Drucker. Der Bereich betreibt Labore für Klangforschung und Animation.

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Re: [PD] [hdplay~] problem
by Achim Bornhoeft 19 Nov '15

19 Nov '15

Hello, Am 18.11.2015 um 13:57 schrieb Py Fave <pyfave(a)gmail.com>: > in your playhd patch > > > you can change the lenght of the array in sfplay look help I am using PD Vanilla. > also i see in soundfiler help: > > read - resize should help > > -maxsize <maximum number of samples we can resize to> The abstraction uses [readsf~] because I want to play the soundfiles directly from disk without reading them into an array. How can I change the soundfiler -maxsize in this case ? Achim > > 2015-11-16 20:28 GMT+01:00 <achim(a)bornhoeft.org>: > Hi, > I wrote a little wrapper abstraction for [hdplay~] (s. attachment) > Working with longer soundfiles I get this error message and the sound is stopped after some time: > "soundfiler_read: truncated to 4000000 elements" > I there a way to solve this ? > Thanks, Achim > > > _______________________________________________ > Pd-list(a)lists.iem.at mailing list > UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list > >

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Re: [PD] fexpr~ block limitations - bug
by Shahrokh Yadegari 19 Nov '15

19 Nov '15

Hi Alexandre, (and all) Attached is a pre Version 0.5 expr~.d_fat compiled on OSX 10.9.5 with some fixes. I have fixed a number of the bugs, which are listed on the attached modified pd patch Alexandre sent me. I am still working on the others, but I thought I send this intermediate version to you to test if you had the time, before I pass the sources to Miller. I am not sure if I have picked the best way to fix the functions that were supposed to receive one argument, but were listed as needing two, or vice versa. My impetus was to fix and drop the erroneous version which would break any patch that has used them in the wrong format. I think it is better to break the patches and inform the author of the new change. Most likely, the original use did not behave as it should have any way, and it is better to fix the patch. I would be happy to hear from any experiences. best, Shahrokh On Wed, Sep 9, 2015 at 11:27 PM, Shahrokh Yadegari <sdy(a)ucsd.edu> wrote: > Thanks Alexandre. I will be in touch soon with new objects. > > best, > Shahrokh > > > On Tue, Sep 8, 2015 at 9:48 PM, Alexandre Torres Porres <porres(a)gmail.com> > wrote: > >> sure, count me in for testing it, my pleasure ;) >> >> I'm on a mac os - yosemite and mavericks >> >> cheers >> >> 2015-09-08 21:22 GMT-03:00 Shahrokh Yadegari <sdy(a)ucsd.edu>: >> >>> Hi Alexandre, >>> >>> I recall that I fixed this bug a while back so I am surprised that I see >>> it again. >>> >>> In any case your email is timely as I just started looking at the bugs >>> and hope to be submitting new sources soon. >>> >>> Would you care to be my alpha tester? If so, what environment are you >>> on? (mac, linux, sorry I cannot deal with windows) >>> >>> cheers, >>> Shahrokh >>> >>> >>> On Tue, Sep 8, 2015 at 1:12 PM, Alexandre Torres Porres < >>> porres(a)gmail.com> wrote: >>> >>>> So, as it seems, I just found that there's an issue with the way >>>> [fexpr~] abbreviates the formulas and the way it behaves. >>>> >>>> If you use it like this [fexpr~ ($x + $x[-1] + $x[-2] + $x[-3]) * 0.25] >>>> by supressing the outlet number, it won't check back on previous block >>>> sample values. >>>> >>>> but if you do this [fexpr~ ($x1 + $x1[-1] + $x1[-2] + $x1[-3]) * 0.25] >>>> it will! >>>> >>>> check attached patch >>>> >>>> Anyway, still seems like a bug to me one way or another that needs to >>>> be fixed. And, as long as we're on the subject, how's the work on the >>>> previous bug reports? >>>> >>>> Thanks >>>> >>>> 2015-09-08 1:47 GMT-03:00 Alexandre Torres Porres <porres(a)gmail.com>: >>>> >>>>> Hi Shahrokh and Pd list >>>>> >>>>> I've been testing fexpr~ and it seems it won't get the previous >>>>> samples from the previous block. >>>>> >>>>> For example, a simple mean filter like this: >>>>> >>>>> [fexpr~ ($x + $x[-1]) * 0.5] >>>>> >>>>> will not work for the first sample of the block, because it won't get >>>>> the last sample from the previous block. >>>>> >>>>> So, I know that in practice it doesn't compromise much, it's just one >>>>> sample, but in an 16 point average filter this becomes more of a concern. >>>>> One way or another, even for just one sample, I consider this problematic >>>>> and a bug, as it should always be able to address previous samples. >>>>> >>>>> Am I right? >>>>> >>>>> thanks >>>>> >>>> >>>> >>> >>> >>> -- Shahrokh Yadegari Professor of Composition and Sound Design, Theatre and Dance Department University of California, San Diego Director, Initiative for Digital Exploration of Arts and Science, (IDEAS) California Institute for Telecommunications and Information Technologies (Calit2) Email: sdy(a)ucsd.edu Web: http://yadegari.org Tel: (858) 822-4113 Fax: (858) 534-1080

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Pd-list November 2015