Pd-list December 2007

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129 participants
239 discussions

Bandlimited waveforms
by Frank Barknecht 03 Dec '07

03 Dec '07

Hi, I studied the final chapter of Miller's book a bit deeper during the last days. It contains this interesting and sophisticated method of bandlimiting classical waveforms using transition splicing [1]. The docs contain an example, J09.bandlimited.pd, which I transformed into an abstraction, [splicetrans~], in the process I modifyed the calculations to work with samplerates different from 44.1 kHz and kept a normal rising phasor from 0-1 as signal instead of a falling sawtooth from 0.5 to -0.5 as in the example. That was basically copy/paste work. The interesting thing then is to use this new phasor to construct other waveforms like square or trapezoid waves using the methods described in the last chapter as well. These all involve some phase-shifted phasors created using [wrap~]. But to use the transition-spliced phasor~ as source for these waves, care needs to be taken in the placement of the [wrap~]s compared to the phasor, otherwise all bandlimiting effort will be in vain because [wrap~] cuts off the transition in the wrong place. But once you get the hang of it, it's actually quite easy: Always [wrap~] *before* you do the transition splicing. This approach has one big advantage over bandlimiting with pre-calculated wavetables as realized in some old patches by Guenther Geiger and newer ones by Roman: The waveforms can be changed on the fly, for example to do PWM on a rectangle wave, which is hard or impossible with pre-calculated bandlimited waveforms. As this technique wasn't really discussed on this list so far AFAIR, I just attached the patches for everyone who's interested in it to try and of course to comment and squash bugs. [1] http://crca.ucsd.edu/~msp/techniques/latest/book-html/node196.html Ciao -- Frank Barknecht _ ______footils.org__

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Re: [PD] tabread4~~
by robbert van hulzen 03 Dec '07

03 Dec '07

to my relief, there was something in this thread that i understood :) and they're fun too, the little buzzers. thanks for sharing. cheers, robbert "Charles Henry" <czhenry(a)gmail.com> wrote: > when I started using pd, I tried to > make some complex tones, where I could shift the partials around while > keeping pitch constant. It didn't work. But I messed with it enough > to make electronic sicadas (attached)

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re [pd] I just made a tutorial.
by Vreahli the Audio Bandit 03 Dec '07

03 Dec '07

http://www.youtube.com/view_play_list?p=58B27A2256B8131D The playlist link is here... that way ya can see both parts. :)

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pdlua compiling on mac
by marius schebella 03 Dec '07

03 Dec '07

hi (hans), I am trying to compile a recent version of pdlua on my mac. I know that last time I did this by putting lua.c into pd-extended and compile it from there, but I don't know anymore, how that is done. the makefile that comes with the tarball does not work for os x, and I also don't know how and what to include. what needs to be done to include this in pd-extended. is this possible at all, since it relies on a lua installation. or could that also be included in the pdlua package, since these files are not very big. thanks, marius.

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[PD-announce] pdlua-0.3 released
by Claude Heiland-Allen 03 Dec '07

03 Dec '07

Greetings, ----8<---- pdlua is a Lua embedding for Pd, allowing you to write Pd classes/objects using the Lua scripting language. New features in pdlua-0.3: (+) send support - send messages to receivers. (+) receive support - bind your object to receive names. (+) clock support - schedule callbacks for the future. (+) static build support - link the Lua interpreter into the pdlua external, for systems that don't provide Lua 5.1. You can download the stable release tarball: https://devel.goto10.org/dl.php?repname=maximus&path=%2Freleases%2Fpdlua-0.… Or, check out the development version from SVN: svn checkout https://devel.goto10.org/svn/maximus/pdlua pdlua ----8<---- Thanks, Claude -- http://claudiusmaximus.goto10.org _______________________________________________ PD-announce mailing list PD-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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Re: [PD] Kaossilator clone
by PSPunch 02 Dec '07

02 Dec '07

Chris, I tried out your FUDIKaosDS today. After displaying the message, "Connecting using WFC data...", the LED indicating WIFI activity kept on blinking but never proceeded. (From the code in wifi.c I am imagining a message is expected to show weather the attempt fails or not.) -- I've looked around and found some notes that older versions of libdswifi had compatibility issues with the following two situations. 1. Adapters which use a 512kb flash for their firmware 2. DS manufactured relatively recently (That's probably me!) This problem is said to have been fixed in later releases of the library. At least a binary I built using devkit1.4.4 I downloaded just today is working fine and I am now very very happy. You may also want to rebuild the binaries you are distributing on your site using more recent libraries. Anyway, thanks for the cool products. -- David Shimamoto > On Thu, Nov 29, 2007 at 11:26:39AM +0900, PSPunch wrote: >> The last time I looked into DS development around Jun. '07, >> I think there were some difficulties writing Wifi code that >> worked on all types of cartridges. > > The greater problem is with disk/cart IO that works on all carts. As > far as I know the same wifi code runs everywhere. I specifically avoid > writing applications that need disk/cart access so I don't have to mess > with the dldi stuff. > >> Chris, If you do not know yet and you are interested, >> I can inform you how the compatibility goes with the R4. > > I am 99% sure it will work fine on that cartridge, but please let me > know if it doesn't. > > Best, > > Chris. > > ------------------- > http://mccormick.cx >

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get array size
by Ypatios Grigoriadis 02 Dec '07

02 Dec '07

Hello! Is there any direct way to get the size of an array? I found [getsize] but i didn't really understood how it works. I'm not into data structures (yet).. Thank you ciao! -- Ypatios.

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colored arrays?
by Orm Finnendahl 02 Dec '07

02 Dec '07

Hi, is there a way to color arrays? The message ";array1 color 10 10" isn't recognized and I also couldn't figure out whether there is a way to specify that in the patch file itself (the sources seem to indicate that something concerning the color of an array is saved to file). Can someone help? (BTW: it's on pd-0.39) Yours, Orm

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[PD-announce] LAC2008 submission deadline extended
by Frank Barknecht 01 Dec '07

01 Dec '07

Dear all, the deadline for the call for papers and music for the Linux Audio Conference 2008 (LAC2008) has been extended. The new and final deadline for paper and music submissions is now Thursday, December 6, 2007, 24:00 UTC (This is equal to Friday, December 7, 2007, 0:00 UTC) We invite submissions of papers addressing all areas of audio processing based on Linux and open source software. Papers can focus on technical, artistic or scientific issues and can target developers or users. We are also looking for music that has been produced completely or mostly under Linux and/or with open source software from every genre: compositions, Electronica, Chill-Out, Ambient, etc. For paper submissions, please use the online form at http://lac.linuxaudio.org/openconf For music submissions and further details on both calls, please refer to the calls below and on the web at http://lac.linuxaudio.org We are looking forward to many interesting submissions for the 6th International Linux Audio Conference 2008 and we hope to see you in Cologne 2008! Please feel free to forward this e-mail to anybody who might be interested. On behalf of the LAC2008 organisation team, Frank Barknecht and Martin Rumori ---------- Linux Audio Conference 2008 Cologne, Germany 28.02.-02.03.2008 Call for Papers =============== http://lac.linuxaudio.org/download/lac2008_callforpapers.txt We invite submissions of papers addressing all areas of audio processing based on Linux and open source software. Papers can focus on technical, artistic or scientific issues and can target developers or users. This includes (but is not limited to) the following categories: * Computer Music * Music Production * Instruments * Drivers and Sound Architecture * Audio Distributions * Generic (Usage, Documentation etc.) The conference is held in English. Length of a paper is 4-8 pages. Papers have to include an abstract (50-100 words). The abstract will be published separately on the conference website once the paper has been accepted. Also, papers should include up to 5 keywords. In general talks should take 20-30 minutes followed by 5 minutes discussion. Please notify us if you need a special technical setup. The technical standard setup will be: * microphone/head set * projector with XVGA input (resolution 1024x768) * stereo speaker setup with mini jack input If you are not able to bring your laptop along with you, please notify us in advance. How to submit -------------- * Do not send papers via email as with the past LAC conferences! * Instead please use the paper upload form in our conference management system at: http://lac.linuxaudio.org/openconf * File format is PDF, formatted for A4 paper. Make use of the templates for paper formatting available at: http://lac.linuxaudio.org/download/lac2008_templates.tar.gz * Authors of papers selected to be included in the printed conference proceedings will also have to supply supplemental material like illustrations needed to layout the printed proceedings separately. * Deadline for paper submissions is December 6, 2007, 24:00 UTC Important Dates ---------------- 06 Dec 2007: Paper submission deadline 21 Dec 2007: Notification of acceptance 11 Jan 2008: camera ready version 28 Feb - 2 Mar 2008: Linux Audio Conference in Cologne ---------- Linux Audio Conference 2008 Cologne, Germany 28.02.-02.03.2008 Call for Music ============== http://lac.linuxaudio.org/download/lac2008_callformusic.txt The conference will include several concerts. We are looking for music that has been produced completely or mostly under Linux and/or with open source software from every genre: compositions, Electronica, Chill-Out, Ambient, etc. If you want to participate, either send your composition(s) to this address: LAC2008 - Call for Music Kunsthochschule für Medien Martin Rumori Peter-Welter-Platz 2 D-50676 Köln Germany or send your submission via email to: lac(a)linuxaudio.org Please do not attach any media files to email submissions, only provide a URL to where the piece can be downloaded. Make use of one of the following media formats: * Media: Audio-CD, DVD, DVD-R, CD-R, Website download * File formats: aiff, wav, flac, ogg, mp3 * Samplerate: 44.1 or 48 kHz * Resolution: 16 or 24 bit * Number of channels: 1 to 8 channels * Channel format: multi-channel interleaved, multi-mono Include the following items with your submission (in English): * A filled-out and signed printout of the form available here: http://lac.linuxaudio.org/download/lac2008_musicagreement.pdf The form can be filled out with a computer and printed out afterwards for signing. For the printed program and to be published online and on the conference CD, in continuous text (no table or list please): * short commentary on the composition(s) (each ca. 150 words) * short Curriculum Vitae (ca. 100 words) Deadline for submissions is December 6, 2007, 24:00 UTC A jury will select the compositions that will be performed/played. Besides artistic criteria and technical reasons, these criteria apply for the selection: Tape pieces or pieces which are performed by the composers themselves will generally have more chances to get included. If we get more pieces than we can include in the program, composers who are attending the conference are preferred. Terms and conditions for participation can be found in the form mentioned above. This form includes among other things: I will receive no fees whether my composition is played or not. GEMA fees (in case of performance) will be paid by the organizer. The material I send to the LAC organisation team will not be returned. Important Dates ---------------- 06 Dec 2007: Music submission deadline 21 Dec 2007: Notification of acceptance 28 Feb - 2 Mar 2008: Linux Audio Conference in Cologne _______________________________________________ PD-announce mailing list PD-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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Pd-list December 2007