Pd-list November 2009

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129 participants
189 discussions

question about external free functions
by Rich E 09 Dec '09

09 Dec '09

Hi, Can anyone help me understand why an external's free function doesn't seem to be called if pd is shut down as a whole (ex. ctrl-q)? I put post's, printf's, and breakpoints in my free function and they are called if I remove the external from the patch or the patch as a whole (ex. ctrl-w). But, if I shut down pd all at once, the breakpoint doesn't trigger and I don't get any print. The same thing happens in a flext external, within the ~Destructor method. I don't understand. Regards, Rich

2 4

Anybody use google wave?
by Adityo Pratomo 08 Dec '09

08 Dec '09

Hi there evrybody? Just out of curiosity, anybody here use google wave? I feel that this platform is quite ideal for having real time conversation. So, if many people on the Pd-list here use google wave, we can have some discussion and brainstorming on it :) -- mataharipertama.wordpress.com kotakmakan.multiply.com

6 11

no audio in -nogui mode
by Hans-Christoph Steiner 03 Dec '09

03 Dec '09

So I have a Debian/stable box for a sound installation and I want to run pd with -nogui on it. But it is acting insane. Basically, when I run Pd with a GUI, everything works fine. When I add -nogui, pd can't read/write the audio devices. I've tried: - ALSA and OSS - root and other users - Pd-extended 0.41.4 and 0.42.5 and Pd-vanilla 0.41.4 Here's what I get with OSS: pd@arg:~$ pd -nogui /tmp/test.pd /dev/dsp (read/write): Device or resource busy (now will try write-only...) /dev/dsp (writeonly): Device or resource busy /dev/dsp (readonly): Device or resource busy audio I/O stuck... closing audio Here's what I get with ALSA: pd@arg:~$ pd -alsa -nogui /tmp/test.pd snd_pcm_open (input): Device or resource busy snd_pcm_open (output): Device or resource busy Any ideas? .hc ---------------------------------------------------------------------------- Looking at things from a more basic level, you can come up with a more direct solution... It may sound small in theory, but it in practice, it can change entire economies. - Amy Smith

3 3

Very large patches unstable?
by Stephen Lucas 03 Dec '09

03 Dec '09

I'm experiencing some instability with a patch that is very large. Basically, I have an abstraction that does some calculations between a send and receive, whose names are controlled by the creation arguments of the abstraction. I made a little patch to create 68x68 of these (yes, I really need that many), and correctly place them on the canvas so that they don't overlap graphically. As far as I can tell, they all created fine and I even managed to save the patch. I did use a text editor to manually increase the size of the canvas, since message based object creation will not automatically resize the canvas if something will be past the bounds of the canvas. I've been getting inconsistant problems (crashing) with what I can only assume is an issue with a patch this large (4624 objects). If I understand things correctly, these abstractions do not have any DSP objects and should not be consuming large quantities of system resources if they're just hanging around, waiting to be used. I suspect the problem may mainly be linked to actually looking at the patch, which I don't need to do, but I don't feel confident using a patch that is always cheating death. If I don't look at the patch and just load it as an abstraction in another patch, it seems much more stable, but still takes a long time to create, delete, open, or close. Has anyone else seen this problem and am I crazy for trying to do this? In Max I probably would have tried to approach this using poly~, but I don't know any objects in pd that have similar methods of creating several instances of an abstraction. If this is simply a problem of having a very large canvas, I could compartmentalize the abstractions to solve that. Thanks to anyone who puts in their 2cents. -Stephen

6 11

video server that can be controlled from OSC
by altern 01 Dec '09

01 Dec '09

Hi for an interactive installation constructed with PureData we developed using OpenFrameworks an app that allows to display and control videos, images and webcam video streams. We controlled it via OSC with a set of messages from PureData, so we wrote a PD patch that explains all OSC messages but also some abstractions that wrap the OSC messages into some objects, again this is to be used by students woth little knowledge of PD. I also wanted to implement some movement detection but since this was not finally used in the installation it is not really working well. All this could be done with GEM but we needed to get the sound track of the video files played with the video. I just thought it would be nice to share it so this is the download link for the source and binaries. Detailed info about the OSC messages and all features implemented are included in the readme file within the download folder http://ixi-audio.net/content/download/oscVideoServer any coments are welcome enrike

4 3

Studies on sound
by Konstantinos Benardis 01 Dec '09

01 Dec '09

Hi list Well, the question is not that relevant with the list´s subject but i can not find another place to ask and i think many people from here would be able to answer. I am trying to find a master degree in digital music/digital sound, in Europe, in English Spanish or Greek. So i wanted to ask if someone knows which Institutes are considered good on this field. Thank you

6 5

GEM: writing an image different from the one displayed
by Matteo Sisti Sette 01 Dec '09

01 Dec '09

Hi, I have to modify some patches made by another person. In one of them, [pix_write] is used to save screenshots of the image being shown in the gemwin. However, the user would like to be able to save a higher quality image, namely 2000x2000 (so it can be printed). To my knowledge (and to the knowledge of the person who made the patch), the only way to do this is to increase the resolution of the gemwin. But since the resolution of the screen cannot be increased so much, the complete image cannot be seen. The user wants to be able to still see the whole image (at its usual resolution of 480x480) while saving screenshots at a higher resolution. So the question is: is it possible to save an image which is not the one being rendered into the gemwin? So that I can for example generate a big image, save it, reduce its size, and render the reduced image instead of the big one? A slow-down due to great cpu consumption at the moment of "capturing" the image would be acceptable (though not desired, obviously) provided that it is limited to the moments when the image is captured. Any idea? P.S.: The image is being generared by "tiling" the image from a camera, i.e. repeating it: that's why it make sense to save the resulting image in a higher resolution: if the camera has for example a res of 640x480 and it is being repeated in a 5x5 grid, up to 3200x2400 resolution "makes sense" for the saved image. Thank you very much m. -- Matteo Sisti Sette matteosistisette(a)gmail.com http://www.matteosistisette.com

7 36

(GEM) color invasion
by Matteo Sisti Sette 30 Nov '09

30 Nov '09

Hi, Consider the following patch, where the [gemhead] is connected to all [separator]s (I'm not so good with ascii-art): [gemhead] ... [separator] [separator] [separator] | | | [color 1 0 0] | | | | | [translateXYZ...] [translateXYZ...] | | | | [square 2] [square 2] [square 2] (with suitable values in translations so that all squares are visible) The 'issue' is that all squares are red. Is it normal/expected??? I would expect only the square in the left chain to be red. Is it that [separator] only separates certain things and does not separate others? If so, where can I find a list (or a rule) that tells me what it separates and what not? You may suggest that I can create separate [gemhead]s, but if I want the resulting scene( to be rendered into a texture all chains must be "children" of a single [gemframebuffer] and so of a single [gemhead] and I can only "separate" them with [separator]s. So up to now my only solution is to put a [color 1 1 1] on every object that I don't want to be coloured, but that's a bit unhandy.... -- Matteo Sisti Sette matteosistisette(a)gmail.com http://www.matteosistisette.com

3 6

Exhibition in Sydney until the 20th of December
by Max 30 Nov '09

30 Nov '09

Hi list, if you happen to be in Sydney you are invited to go see my pd-based work in a gallery: http://www.the-generalstore.net/ Greetings, Max

1 0

for the pd audiophiles out there ...
by Daniel Wilcox 30 Nov '09

30 Nov '09

... the $500 Denon Link Cable<http://www.amazon.com/Denon-AKDL1-Dedicated-Link-Cable/product-reviews/B000…>and it's associated reviews<http://www.amazon.com/Denon-AKDL1-Dedicated-Link-Cable/product-reviews/B000…> . Here's an excerpt: Transmission of music data at rates faster than the speed of light seemed convenient, until I realized I was hearing the music before I actually wanted to play it. Apparently Denon forgot how accustomed most of us are to unidirectional time and the general laws of physics. I tried to get used to this effect but hearing songs play before I even realized I was in the mood for them just really screwed up my preconceptions of choice and free will. I'm still having a major existential hangover. Would not purchase again. -- Dan Wilcox danomatika www.robotcowboy.com

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Pd-list November 2009