Pd-list July 2008

pd-list@lists.iem.at

111 participants
206 discussions

tips for a slow machine?
by potax flan 03 Jul '08

03 Jul '08

i'm trying to make the eeePC (xandros, 1gb ram) to be the genius setup that i envisioned. first, i am aware this is a limited machine, but i plan to do basic synthesis on it. nothing too complex. i'm hiding as much GUI elements as i can in subpatches, i start pd with -rt flag, and i turned the latency up to 200... BUT i'm still getting occasional glitches in really basic patches (been trying them on my macbook and there's no glitches whatsoever there. it's only a couple of oscillators and some filtering). so what other things should i tweak to make the thing more stable? danke

2 1

Linux + pd + jack midi?
by Josh Lawrence 03 Jul '08

03 Jul '08

Hello, There are applications I want to use on Linux that speak only jack midi and not alsa seq. Many of the softsynths I like, however, still use the alsa seq interface. Is there a way to make pd act as a "glue" between these two? I am not a programmer, and to be honest, complicated things confuse me. I really need a simple utility here, but flexible. Thanks to all, -- Josh Lawrence http://www.hardbop200.com

2 1

raw resampling
by Atte André Jensen 03 Jul '08

03 Jul '08

Hi I'm trying to do a simple resampling (downsampling) of an audio signal. I thought a simple snapshot, triggered by a metro 1 would do, but apparently not. Attached is a patch that does this, but the resampled signal sounds nothing like a rising (20hz-15kh<) sine. Am I totally off track here, or how do I resample an audio signal to, say, 4410 khz? NB: I'm still quite new to pd, so any comments on the patch, with regards to how to do certain things easier/better/cleaner is highly appreciated. -- peace, love & harmony Atte http://atte.dk | http://myspace.com/attejensen http://anagrammer.dk | http://modlys.dk #N canvas 38 95 542 507 10; #X obj 158 427 dac~; #X obj 96 212 osc~; #X obj 96 190 line; #X obj 338 19 loadbang; #X msg 338 46 \; pd dsp 1; #X obj 185 134 line~; #X msg 69 11 bang; #X msg 185 83 0 20; #X obj 97 235 *~; #X msg 8 85 20 0; #X msg 43 84 15000 4000; #X obj 43 63 del 1; #X obj 185 62 del 4000; #X obj 235 282 snapshot~; #X obj 235 259 metro 0.1; #X obj 194 293 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0 1; #X obj 232 365 *~; #X obj 112 316 * -1; #X obj 112 337 + 1; #X obj 97 360 *~; #X msg 141 83 0.1 20; #X text 105 10 <- click to start; #X text 106 290 org/resampled?; #X connect 1 0 8 0; #X connect 2 0 1 0; #X connect 3 0 4 0; #X connect 5 0 8 1; #X connect 6 0 20 0; #X connect 6 0 9 0; #X connect 6 0 11 0; #X connect 6 0 12 0; #X connect 6 0 14 0; #X connect 7 0 5 0; #X connect 8 0 13 0; #X connect 8 0 19 0; #X connect 9 0 2 0; #X connect 10 0 2 0; #X connect 11 0 10 0; #X connect 12 0 7 0; #X connect 13 0 16 0; #X connect 14 0 13 0; #X connect 15 0 16 1; #X connect 15 0 17 0; #X connect 16 0 0 0; #X connect 16 0 0 1; #X connect 17 0 18 0; #X connect 18 0 19 1; #X connect 19 0 0 0; #X connect 19 0 0 1; #X connect 20 0 5 0;

4 4

i need a bit of help to understand overlapped blocks
by hard off 02 Jul '08

02 Jul '08

recently i have discovered the joys of using overlapped blocks in sound patches. however, i'm having a little bit of difficulty understanding exactly WHAT gets overlapped, and what doesn't get overlapped. it seems to me that control messages and do not get overlapped, and i can't really tell what happens to external audio signals connected to the overlapped patch. is there some documentation somewhere on this topic? or would a kind person like to tell me basically what functions block overlap has? cheers. matt

2 1

Video with embedded audio track
by Andre Cardozo 02 Jul '08

02 Jul '08

Hello all, I´m working on a project which requires some videos to be displayed on screens, along with their corresponding soundtracks. I do know how to use GEM to display and manipulate the videos, but as far as I know GEM ignores the embedded audio tracks, as is a visuals-only library. So the questions are: is it possible to display/manipulate a video AND its correspondent/embedded audio track together, maybe using another library or objects? or do I have to extract the audio from the AVI file, handle audio and video separately and synchronize them? Thanks Andre

5 4

Announcement Kickstart RJ
by geiger＠xdv.org 02 Jul '08

02 Jul '08

= RJ Sprint, July 2008 = www.realityjockey.com = Kickstart interactive music = RJ is an interactive music format for the iphone and other mobile devices. The goal of the project is to turn interactive music into a consumer format. ? RJ tracks are mainly consumed with headphones. Think of it as the next generation of walkman or mp3 player. The consumer experience of RJ is similar to the effects of drugs. Drugs affect our sensory perception, so does RJ. RJ is a mind twisting hearing sensation.? = Open doors = RJ is built on a number of open source components and most parts of the project will be open sourced in return. RJ tracks are composed using pure data (PD). The RJ player has direct access to the online repository of RJ tracks. Of course we want as much people as possible to participate in this and create RJ tracks. = RJ sprint = The first RJ sprint is focused on people who want to produce RJ tracks using Pure Data. We will provide RJ-Know-How and sufficient tools. You should be a fluid PD user with a music background. For this first sprint we are looking for 5 to 10 people. Your feedback will have direct impact on the development of the RJ format, player and composition tools. Right now we can offer to you not more and not less than being among the first RJs. Your RJ tracks will be the first tracks downloadable on the RJ player. If we manage to turn RJ into a success story, your name and your tracks will be part of this success. = Welcome = The event is the first of a number of sprints hosted by Michael Breidenbruecker, Guenter Geiger, Paul Brossier and Amaury Hazan. It takes place in Bizau, Austria on a hopefully sunny weekend in the scenic landscape of the austrian alps. Of course we will cover the costs of your traveling from and to Bizau, accommodation and food during the event. We would be very delighted to welcome you and a number of fellow RJs in Bizau. Please let or Guenter or Michael know as soon as possible if you are interested and we will contact you concerning details. Date: 11, 12, 13 July 2008; Location: Bizau, Austria Hotel: Hotel Taube If you want to join us, please contact geiger at realityjockey.com or michael at realityjockey.com More info at www.realityjockey.com Thanks, Michael Breidenbruecker, Günter Geiger, Paul Brossier, Amaury Hazan. ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.

1 0

better tabread4~
by cyrille henry 02 Jul '08

02 Jul '08

hello, i'm still trying to understand why pd sound quality is not very good. i realized that the 4 points interpolation in tabread4~ (and tabosc4~) are not optimal. so, i just made few objects to replaced them (most of the code are copy from pd sources), but using a true 4 points cubic interpolation. i personally consider this to sound better than the pd version (specially with small tables), and they did not use more cpu. this objects (located in svn/externals/nusmuk/tab/) are just for test, but they can fully replace the standard tabosc4~ and tabread4~. i think higher order interpolation can be useful for even better audio quality, but i'm wondering if someone already worked on this. if not, i'll like to make a few tabread equivalent with diferents interpolation schematics (when i'll have more time...). cyrille

14 51

Re: [PD] pd clicking with jack/linux
by Matt Barber 02 Jul '08

02 Jul '08

> Date: Tue, 1 Jul 2008 23:23:44 +0200 > From: Frank Barknecht <fbar(a)footils.org> > Subject: Re: [PD] pd clicking with jack/linux > To: pd-list(a)iem.at > Message-ID: <20080701212344.GL6144(a)fliwatut.scifi> > Content-Type: text/plain; charset=us-ascii > > Hallo, > Matt Barber hat gesagt: // Matt Barber wrote: > >> Depending on what your patch does, you can often put much of the >> "engine" of your patch in subpatches, and then make a "control >> surface" with sends and receives. > > Note that GUI objects even in subpatches can lead to more CPU use. At > least I once managed to make a patch perform much better by removing a > lot of [bng] objects hidden in abstractions or subpatches. The example > is somehwere in the list archive, maybe I can find it again. I don't know the code well enough, but I could imagine the following: What would happen to the CPU usage if you had replaced the [bng] objects with [bang] objects? Or is the architecture such that an object only computes if its outlet is connected to something? If that's the case, I could imagine that another difference between [bang] and [bng] might be that the [bng] always has to compute the bang whether or not its outlet is connected -- maybe it would have more to do with this than just its being graphical. But really I don't know, just speculating late at night. Thanks, Matt

1 0

Re: [PD] example of $1 and inlets in abstractions
by Atte André Jensen 02 Jul '08

02 Jul '08

petoral(a)optonline.net wrote: > i remember, hardoff has a very nice tutorial example & discussion > about using $- dollar sign which is a very good reference. > http://puredata.hurleur.com/index.php, hardoff might have a direct > link or just search in the forum. Thanks, I found it here: http://puredata.hurleur.com/sujet-1187-abstraction-why-use-etc With help from that I managed to work out the attached patch (supposed to play a sample at a give rate, 1 being original speed). Now I face another problem: freq seems to be 0 :-( I guess it has to do with $0-file_samples being available after $0-load, so the division on the left gets 44100/0. I even think this way of doing the division is quite clumsy. How can I do it correctly? -- peace, love & harmony Atte http://atte.dk | http://myspace.com/attejensen http://anagrammer.dk | http://modlys.dk #N canvas 354 223 640 428 10; #X obj 93 20 loadbang; #X obj 305 268 soundfiler; #X msg 59 20 bang; #X msg 204 42 \; pd dsp 1; #X obj 42 249 *~ 100000; #X obj 461 394 print nb_samples; #X obj 42 225 phasor~ 0.5; #X obj 42 170 44100; #X obj 42 202 /; #X obj 380 76 wavinfo; #X obj 93 63 s \$0-load; #X obj 204 20 r \$0-load; #X obj 380 32 r \$0-load; #X obj 380 54 symbol \$1; #X obj 380 202 f \$0; #X obj 305 202 symbol \$1; #X obj 219 273 print pack; #X obj 305 224 pack symbol f; #X obj 507 25 table \$0-sample; #X obj 42 273 tabread4~ \$0-sample; #X obj 42 148 r \$0-load; #X obj 345 163 r \$0-load; #X msg 305 246 read -resize \$1 \$2-sample; #X obj 18 321 outlet~; #X obj 77 321 outlet~; #X obj 272 36 inlet; #X text 18 339 left; #X text 77 339 right; #X text 320 6 rate; #X obj 445 119 s \$0-file_samples; #X obj 445 141 s \$0-file_channels; #X obj 445 163 s \$0-file_bitsize; #X obj 445 185 s \$0-file_rate; #X obj 461 372 r \$0-file_samples; #X obj 138 198 r \$0-file_samples; #X obj 270 87 s \$0-rate; #X obj 332 395 print rate; #X obj 332 374 r \$0-rate; #X obj 312 36 r \$0-load; #X obj 315 64 f \$2; #X obj 180 245 print freq; #X connect 0 0 10 0; #X connect 2 0 10 0; #X connect 4 0 19 0; #X connect 6 0 4 0; #X connect 7 0 8 0; #X connect 8 0 6 0; #X connect 8 0 40 0; #X connect 9 0 29 0; #X connect 9 1 30 0; #X connect 9 2 31 0; #X connect 9 3 32 0; #X connect 11 0 3 0; #X connect 12 0 13 0; #X connect 13 0 9 0; #X connect 14 0 17 1; #X connect 15 0 17 0; #X connect 17 0 22 0; #X connect 17 0 16 0; #X connect 19 0 23 0; #X connect 19 0 24 0; #X connect 20 0 7 0; #X connect 21 0 14 0; #X connect 21 0 15 0; #X connect 22 0 1 0; #X connect 25 0 35 0; #X connect 33 0 5 0; #X connect 34 0 4 1; #X connect 34 0 8 1; #X connect 37 0 36 0; #X connect 38 0 39 0; #X connect 39 0 35 0;

1 0

example of $1 and inlets in abstractions
by Atte André Jensen 01 Jul '08

01 Jul '08

Hi In the manual, I don't really understand the section about $ arguments in abstractions. Could anyone point me to a simple example abstraction which both uses $ creation arguments *and* inlets? -- peace, love & harmony Atte http://atte.dk | http://myspace.com/attejensen http://anagrammer.dk | http://modlys.dk

1 0

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 July 2008