Pd-list September 2011

pd-list@lists.iem.at

114 participants
173 discussions

receiving messages in [expr] ?
by Michael Zacherl. 03 Sep '11

03 Sep '11

Hi, to keep my patch tidy I'd like to use some sort of [receive] in a bunch of [expr] objects (mostly constants to configure the patch). I could use sub-patches and [send] the values to them there, is there an easier way? [expr] don't have names like arrays etc. - but maybe there's a trick? Thanks, Michael. -- nonconform? noiseconform: http://blauwurf.at http://soundcloud.com/noiseconformist

9 22

Re: [PD] making puredata headphone-safe
by Ed Kelly 03 Sep '11

03 Sep '11

Ah, guilty as charged. Those LPC plugins don't work very well due to discuntinuities in the filter kernel across DSP block boundaries. It has been on my to-do list for a very long time to recode those objects using a different method. One way to guarantee that things will screw up is to change the number of poles rapidly. The problem is that some objects can generate unstable errors that are orders of magnitude greater than normal audio signals. Then there is a signal that maybe goes between +/- 100000 rather than +/- 1, and the volume control makes little difference. Please don't ask me for specific instances - I can't remember any at the moment, but it's happened to me before. I personally do not use PD with headphones unless it is a patch I know well, with reliable outputs. Conversely, a lot of "noise" music created using PD is played permanently clipped to oblivion. One thing you can do is to use a limiter before the dac~. If the problem persists then avoid this plugin. The metastudio has lots of these. A limited volume control for stereo is enclosed (check the "limit" box, or send a [limit 1( message into the right inlet). Best wishes, Ed Kelly > On 2011-08-29 11:52, Hans-Christoph Steiner wrote: >> >> On Aug 23, 2011, at 3:43 PM, Martin wrote: >> >>> On 23/08/11 03:29 PM, Stephen Lavelle wrote: >>>> I've managed to hurt my ears twice over the past two days when using >>>> PD w/ headphones. Even at lowest system volumes, it seems that >>>> Terrible Things can happen. Are there any precautions that I can take >>>> to make it feel less like I'm taking my life into my hands when I >>>> have to use headphones? >>>> >>>> >>>> >>> >>> Try making a [noise~] connected directly to a [dac~] and set the >>> headphone volume so you can live with that. Nothing will ever be >>> louder than that. >> >> >> Hmm, I don't think that's actually true in all cases. On a MacBook Pro >> running Mac OS X, I've had the volume set to one above mute, but had >> massive feedback from LPC patches that were very very loud. [noise~] >> would be very comfortable at that volume setting. I think some platforms >> do the output mixing in the digital domain, so my min volume would be >> [*~ 0.01], so that this would still make a very loud sound: >> >> [noise~] >> | >> [*~ 999999] >> | >> [*~ 0.01] (i.e. the Apple output mixing) >> | >> >> In this particular case, the sound output actually gets shutdown >> entirely, so you have to reboot to get sound output again. >> > > That make no sense. How can you have two sounds at the same level going into a mixer that come out at different levels? Or do you mean that a squealing sound is perceived to be louder than white noise? Maybe you could demonstrate with a patch? > > Martin > > "If it seems like magic your assumptions are wrong." Martin Peach >I am taking a biologist's approach here: I've observed this happening multiple times in the wild, now I have to figure out why. Its very reproducible, I've taken the >field mice into the lab and seen them reproduce ;) Take Ed Kelly's fun LPC cross-synth example, in ekext/examples/lpc-cross-synthesis.pd. Put some loud samples >into it and go crazy with the parameters and... MELTDOWN! I've never heard my computer make a louder sound... I knew that this patch has some feedback >aspect to it, so I was doing my standard practice, having the volume very low. >.hc ---------------------------------------------------------------------------- Mistrust authority - promote decentralization. - the hacker ethic _______________________________________________ Pd-list(a)iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list

4 7

Balloon Project
by Dan Wilcox 03 Sep '11

03 Sep '11

Here's documentation of a small project using balloons, a kinect, and PD: http://danomatika.com/blog/balloon-project/ -------- Dan Wilcox danomatika.com robotcowboy.com

6 7

qpd update
by Ilya Dmitrichenko 02 Sep '11

02 Sep '11

Hello Guys, I have done some re-organization with the [qpd code][1]. I put the widget/plugin and basic examples in separate repos and use submodules now - see [README][2] for more details! Since it has been reorginized, it should be much easier to add stuff to it and extend the project further! I would be interested to hear any thoughts on more advanced communication model. Currently it has been doing basic TCP and only one way (qpd->pd). It'd be great to try muticasting and other thing, such as 0MQ or may be anything else, e.g. MPI and libpd. Well, let's not get too crazy! The main interest it QT is for it's ability to run in embedded mode using DirecFB. Would be great for tables and other embedded devices. Hope to here from you soon! Ilya (errordeveloper(a)gmail.com) [1]: https://github.com/errordeveloper/qpd [2]: https://github.com/errordeveloper/qpd/blob/master/README.md

1 0

play an animated gif?
by Tony Miller 02 Sep '11

02 Sep '11

Is there anyway to play an animated gif with GEM or gridflow? I heard that GEM has support for gif's with gmerlin-avdecoder. It seems to behave like the gif format is supported, but then perhaps gmerlin crashes? I couldn't even get gmerlin to play a gif outside of PD, with its command line tools. Here is some of the output from the console: pix_film:: gmerlin support [pix_film]: opening /home/tony/Downloads/burger.gif with format 1908 [pix_film]: ... [pix_film]: loaded file: /home/tony/Downloads/burger.gif with 1667013560 frames (80x100) at 1.000000 fps GEM: Only using 8 color bits GEM: Direct Rendering enabled! GEM: GLEW version 1.5.1 GEM: Start rendering GL: invalid enumerant GEM: Stop rendering GEM: Direct Rendering enabled! GEM: GLEW version 1.5.1 GEM: Start rendering GL: invalid enumerant I installed gmerlin, gmerlin-acdecoder, gem and puredata all from source on Arch Linux. If anyone has any idea how I can get a gif to play in pure data any way please let me know.

1 0

Problem with lists and data
by Thomas Mayer 02 Sep '11

02 Sep '11

Hi there, while developping my CouchPdb library I came up with the following problem: I put out lists like this: list _id 1 list pitch 440 Now I am trying to get the values for _id and pitch as floats, but that does not seem to work: [couchdb] | [list trim] | [route _id pitch] \ | \ | [f] [f] But I am always getting the message: error: inlet: expected 'float' but got '1' When I try to use [symbol] instead of [f], I get a similar error message. In my object I do the following: t_atom out_data[2] SETSYMBOL(&out_data[0], gensym(key)); SETFLOAT(&out_data[1], json_object_get_double(val)); outlet_list(data_outlet, &s_list, 2, &out_data[0]); What am I doing wrong? Best regards, Thomas -- "Chaney was aware that anything, however small, can get the eye of the media if it's repulsive enough." (Robert Anton Wilson - The Universe Next Door) http://www.residuum.org/

3 3

sending image from of / libpd
by ronni montoya 02 Sep '11

02 Sep '11

Hi , Do anybody is working with openframeoworks and libpd? i would like to develop an application that interpret pixels as sounds using libpd addon on openframeworks. I was wondering which would be the best way for sending images(opencvimages ) or pixels arrrays from openframeworks to pd using libpd and receiving it in pd for interpreting it as sound in real time. Do anybody have tried soemthing like this? any idea? R.

7 39

Re: [PD] Controlling a Printer
by IOhannes m zmölnig 01 Sep '11

01 Sep '11

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 09/01/2011 07:35 PM, Tyler Leavitt wrote: > Thanks everybody for the responses.... what about if I can only find a USB > printer? Will [hid] work? if your printer reports as a hid device, then sure. there are plenty of buttons on a modern printer, so you might be able to use it as a joystick. oh, and please always reply to the list (which i have done now), rather than sending me private email of general interest. fgmadsr IOhannes -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk5f6BMACgkQkX2Xpv6ydvRJ9wCfXinxq+Vv7yA5ixmigSYfoPXy PfUAoIrOJxmcbuAQ99KT9LuDItZZMdXC =qWXt -----END PGP SIGNATURE-----

1 0

Controlling a Printer
by Tyler Leavitt 01 Sep '11

01 Sep '11

Hello list, I was curious if anybody has dabbled in controlling a printer through pd. I'm waiting for a cheap one to arrive at the local second-hand store, so while I wait to attempt it myself I thought I'd ask the list. Specifically, I seek to control the location of the printer needle(?) that moves horizontally. I figured I could attach a slide to it and run a guitar string under it for some techno-slide music. Any input appreciated, Tyler

7 9

Pd on Zire 31 Pda?
by João Pais 01 Sep '11

01 Sep '11

Hi, I got an old zire 31, and was thinking if it would be possible to put some small pd patches in it. I've seen that Pda only works with linux, and it doesn't seem to be trivial to put an old version of linux on this old pda. So, does anyone have an old pda, and knows how to easily put pd in it? If it doesn't work, does anyone in Berlin wants to have an old Pda? :) http://en.wikipedia.org/wiki/Zire_31 Best, JoÃ£o

2 2

Jump to page:

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

Pd-list September 2011