Pd-list November 2008

pd-list@lists.iem.at

120 participants
179 discussions

Hunting denormals?
by Bill Gribble 04 Nov '08

04 Nov '08

I have a patch of medium complexity, with a handful of instruments~ and a bunch of sequencing and arranging-type message handling. On my speedy Intel laptop it has no problem and barely notches the CPU usage. However, when I run this patch on my teeny Geode-based UMPC it pegs CPU at 100%. I'm pretty sure this is a denormal issue. There are a grand total of maybe 5 noise~, 5 osc~, 10 vline~, 5 lop~, and 1 delay line in the whole patch and not much else besides message processing... I wouldn't guess this to run me out of compute power. Any hints on how to isolate where the denormals might be popping up? I have looked for signal processing loops, and the only ones I create are around the delayline (feedback) and I suppose in the iir implementation of the lop~. Any help appreciated, Bill Gribble

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Re: [PD] available objects in pd extended
by Martin Peach 03 Nov '08

03 Nov '08

Here's a python script to list all the externals in a directory. It goes through all the subdirectories too. Problem with MSW pd externals: they end in '.dll', which could be any shared library. Linux and OSX externals end in '.pd_darwin' or '.pd_linux' so they can't be confused. I tried it with a cygwin terminal like this: python pddlls.py "C:\Program Files\pd\extra" ...and got a list of 2502 objects. Martin Jamie Bullock wrote: >Lao Yu wrote: > > from the ongoing discussion about Max/MSP compatibility I wonder if > > it would be a good idea to create a list of available objects in the > > extended version, quite as it exists for vanilla. For someone who is > > getting acquainted - like me - it sure would be a useful thing, I > > mean like '5.referemce/help-intro.pd'. Does anybody work on such a > > thing? > >The attached script might serve as a starting point for something. It >will list all externals under a given 'extra' directory, and optionally >print all the comments from the corresponding help file if there is one. > >It could easily be adapted to output in csv format, or print the library >a given external is part of. > >One caveat: it assumes that your extra directory has only one level of >nesting, so it only looks in extra/ and extra/* not extra/*/* etc. > >Jamie

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[shell] creates line breaks randomly in big lists.
by Martin Schied 03 Nov '08

03 Nov '08

Hello, dear list! I'm using Ubuntu 8.04, Pd version 0.40.3-extended, pentium M 1600MHz, currently trying to build a file handling patch using [shell] and a message to it: [ls mypath/*.jpg( everything works fine with 20 or less files in the folder. In folders containing approximately 200 files, some of the resulting lines become divided by line breaks, for example: print: Szenografie3/manufactum/ausgewaehlt/6608.jpg print: Szenografie3/manufactum/ausgewaehlt/6610.jpg print: Szenografie3/manufactu print: m/ausgewaehlt/6611.jpg print: Szenografie3/manufactum/ausgewaehlt/6614.jpg print: Szenografie3/manufactum/ausgewaehlt/6615.jpg the cut appears at different positions and different filenames when sending the message again. In some cases a filename is distributed on 3 lines. Is there any way to detect those line breaks within pd? Any objects for string manipulations or regular expressions? Thanks, Martin #N canvas 644 319 450 300 10; #X obj 95 116 shell; #X obj 95 139 route <init>; #X obj 164 163 print; #X msg 95 93 ls Szenografie3/manufactum/ausgewaehlt/*.jpg; #X connect 0 0 1 0; #X connect 1 1 2 0; #X connect 3 0 0 0;

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[PD-announce] Pure Data and sound design workshop - 25-27 Nov 2008 - Poitiers/France
by propaganda＠goto10.org 03 Nov '08

03 Nov '08

prrrr! sayz the kitty wooff! sayz the puppy sorry! sayz the crossposter... -- Pure Data and sound design 25th-26th-27th November 2008 - 9h-12h30 / 14h-17h30 Poitiers, France Part of the 2008 edition of the make art festival, this 3-days workshop taught by Andy Farnell (GB) and assisted by Stéphane Léveillé (FR) is focused on sound design and Pure Data software. It aims to familiarize with the basics of sound, audio synthesis and effects using Pd. While learning how to build their own sounds and musical tools, the participants will end up playing all together over the local network. Booking + more info: http://goto10.org/pure-data-and-sound-design-workshop http://makeart.goto10.org/2008 -- Pure Data et design sonore 25th-26th-27 Novembre 2008 - 9h-12h30 / 14h-17h30 Poitiers, France À l'occasion de l'édition 2008 du festival make art, nous vous invitons à participer à un atelier de 3 jours animé par Andy Farnell (GB) et assisté par Stéphane Léveillé (FR) centré sur le design sonore et le logiciel Pure Data. Il a pour but de se familiariser avec les bases du son, de la synthèse audio et des effets sous Pure Data. Tout en apprenant à fabriquer ses propres sons et outils musicaux, les participants termineront l'atelier en jouant tous ensemble au travers du réseau local. Réservation & plus d'info: http://goto10.org/pure-data-and-sound-design-workshop http://makeart.goto10.org/2008 -- :* _______________________________________________ Pd-announce mailing list Pd-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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Blend of two gem_lists.
by Daniel Almeida 02 Nov '08

02 Nov '08

Hi List. I've been working on a patch for a performance. My idea is to make a simpler vj app with two layers and several videos. I'm now working on the flattening of the layers and I would like to be able to choose the operation: adition, multiplication and subtraction. My problem is this: How do I choose to use pix_add, pix_multiply and pix_subtract? I've got a popup to change it and I've tryied to use gates to route the lists in to the selected operation but the gates don't like gem_lists. I get the following error: "error: gate: no method for 'gem_state'". Thanks for any help! Daniel Almeida

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Help with compressor/limiter abstraction
by Frank Barknecht 02 Nov '08

02 Nov '08

Hallo, I'm trying to build a pure-Pd compressor/limiter effect. I followed a chapter in the Csound book a bit (by Marc Resibois), but somehow it's still a bit strange. I would appreciate if someone could test out the attachemend and maybe even enhance it? Ciao -- Frank Barknecht _ ______footils.org__

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(off topic?) PhD in electronic music?
by eccn＠spherica.demon.co.uk 02 Nov '08

02 Nov '08

I hope this question isn't too far removed from PD discussion... I'm a lifelong devotee to mostly electronic music, and would love to find a higher education course I could do from home in the UK which would put me through a detailed study of a great variety of audio (and perhaps visual) composition and production techniques. Please can anyone suggest such a course? Many thanks Matt Rhys-Robrets N.Wales, UK

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pd and cpu frequency scaling
by Roman Haefeli 02 Nov '08

02 Nov '08

hi all i noticed, that the cpu frequency scaling doesn't react on cpu load caused by pd. even if i have a constant high load - for instance when running several hundred [osc~]s - the cpu frequency stays at the lowest value of 800 MHz. i need to run another program, such as 'yes' or 'burnMMX' in order to trigger the scaling to set the frequency to the maximum of 2401000 MHz. so far i only noticed this behaviour with pd. other programs don't seem to 'fool' frequency scaling. specs: pd 0.41.4 running in -rt -jack mode 2.6.24-21-rt (from ubuntu hardy) Intel Core 2 Duo CPU T8300 @ 2.40GHz scaling_governor: on_demand (default) i know, that it is most likely not a direct pd problem, but probably some other pd-linux users encountered a similar behaviour. as a workaround, i currently manually switch the scaling_governor to 'performance', when i am in a 'performative' situation. i wonder, if there is a real fix for that problem. roman ___________________________________________________________ Telefonate ohne weitere Kosten vom PC zum PC: http://messenger.yahoo.de

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pix_imageInPlace
by William Brent 02 Nov '08

02 Nov '08

I'm trying to get pix_imageInPlace to work, with Gem 0.91 and Pd-0.41-4 on OSX 10.5.5. The preload command seems to load things successfully, >> [pix_imageInPlace]: loaded images: DSC_ .JPG from 0 to 5 skipping 1 but nothing happens when sending an index number to the right inlet. pix_multiimage works the way I expect, but the helpfile for pix_imageInPlace specifically says it's faster for what I want to do. Anyone have any success with this? I saw an old post on this (below) which I think was never answered. Any advice would be great. Thanks, William >>>>>>>>>>>>>>>>>>>>>>>>> hello, quite urgent help needed here.. i've been trying to use pix_multiImage to switch between different images in my patch, but have found that it causes gaps in the music as it loads (or copies?) images when it needs to switch. i'm almost certain that pix_imageInPlace is the solution to my problem, but it doesnt seem to work at all - even in the help file for it. if i just change the help file patch so that it loads some tifs which exist, then click on that message, then the console says all the images are loaded successfully. but then if i create the window and try changing the right inlet number, there is always just a blank white square instead of a textured one. what could i be doing wrong? thanks, pete. -- William Brent www.williambrent.com "Great minds flock together" Conflations: conversational idiom for the 21st century www.conflations.com

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Pd-list November 2008