Pd-list March 2007

pd-list@lists.iem.at

139 participants
278 discussions

OpenGL not found?
by Patrick Pagano 24 Mar '07

24 Mar '07

Hi I am having trouble building GEM from CVS, configure: error: GL not found! you need openGL!!! is the error i get. I know i installed and re-installed libMesa and libMesa-dev on Ubuntu 6.10 anyone have this difficulty? I am using secondlife and had problem with the ati driver on the site so i removed it [secondlife would not run} Is there a way to build Mesa from source and have GEm use that and not conflict with SL? or is there a binary Gem.pd_linux that i have missed pp

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Music created in Pure Data
by David Powers 24 Mar '07

24 Mar '07

PiData, by Cyborg K aka David A. Powers. All synthesis and sequencing was done by a single Pure Data patch, rendered in a single take, then normalized in an external sound editor. More complex synthesis and fx were done with the aid of the Pure Data [vst~] object. The custom [getpi] abstraction was used to output n digits of the first 10,000 digits of Pi at a time: all variable parameters, whether harmonic, rhythmic, or synthetic were driven by instances of the [getpi] abstraction. Overall rhythmic structure was based on the fibonacci sequence: 8 + 13 + 21 + 34 + 21 + 13 + 8 + 34 + 21 + 13 + 8 = 194 seconds = 3:14. The piece took about 15-20 hours to complete, including building abstractions from scratch within Pure Data. Link: http://www.cyborgk.com/audio/cyborgk-pi_data.mp3 *PS. This is the first time I have composed an entire piece in the Pure Data environment... ~David

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Getting (not pure) data over the internet
by Stuart Jones 24 Mar '07

24 Mar '07

Hi In need to get data from a wireless sensor network to control Pd patches. The WSN feeds to a database on a server and I need to send queries over the internet to the data server in the form http://ip address/data/location/device/now (or when on a LAN: ip address/data/.../.../now). How do I send the query out of the Pd patch, and how do I get the resulting data back in? (The data comes in this form: 2007-03-22 18:00:01,17,1,0, which timestamp, device ID, data). I would automate the querying with [metro]. [netsend] [comport] [netserver] don¹t seem to apply. BTW got good results using [comport] on site, picking up from arduinos sending via bluetooth. However, must be done via the server, as data is coming from arduinos, crossbow motes, and proprietary systems and anyway the arduino bluetooth is paired to the server. Thanks Stuart

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Call for Students: PD projects in Google Summer of Code
by Georg Holzmann 23 Mar '07

23 Mar '07

Hallo! I just noticed, that the PD projects are accepted by google. (Mentoring organization is IEM - Institute of Electronic Music and Acoustics, Graz) So all students who want to program sth and earn some money in summer should apply ;) ! (I think it's also possible to suggest further projects ... ) LG Georg

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attack/release for spectral gate [was: is this a spectral gate?]
by Kevin McCoy 23 Mar '07

23 Mar '07

Hello all, A while ago I was working on a spectral gate patch and now I've come back to it. Here's a quote from Tom Erbe's earlier email: "For a spectral gate, just calculate the amplitude from real and imag, make your gate decision based on the amplitude and threshold, and then apply the same gain reduction to both real and imag. Add attack and release to the gate-gain for smoother results." I want to add the attack and release so it sounds smoother and less bubbly/harsh (know what I mean?) I am racking my brain trying to figure out how to do this to each of the frequencies. The soundhack vst does this really nicely and even has a visual representation of the gate where you can see it rise and fall with attack/release for the whole spectrum. The problem for me is persistence across different blocks. I suspect [line~] doesn't work for this as it does for amplitude attack/release implementations. For example, if there is a spike around 3000 Hz, how can I carry that attack and release across several blocks of audio? I used delay objects with what I thought was some success, but I don't think I had it right. I have attached the patch which is basically what Frank posted earlier - it does not have any of this yet and is just a hard on/off. Much confusion, I would be grateful for any help! Kevin -- ++++ http://pocketkm.blogspot.com

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hid printout
by marius schebella 23 Mar '07

23 Mar '07

hi, is it possible to turn off the console printout of hid? marius.

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x11key, how can i simulate a "space" or a "control s", etc
by moritz 23 Mar '07

23 Mar '07

ola im playing around with x11key. how can i simulate some special keys/ commands like space, tab, delete, control a, control c/v, control s, etc... with x11key? i want to make my X very organic :) thanx mORitz

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problems with bandlimited_oscillators
by Roman Haefeli 23 Mar '07

23 Mar '07

hello i've overseen a big problem with the bandlimited_oscillators -abstractions, which syntax_tn pointed to. when the bl oscs are used in several patches and the patch, that was loaded first, is closed, the other patches' oscs won't work anymore, because the first patch was the parent of the singleton, that contained the tables. i didn't think about that when implementing. i see some options to come around that, but none of them is really nice: - the instance, that contains the tables, could send a 'ping' in a fixed intercval and as soon as the ping is not received anymore by the other instances, one of them creates the tables. the problem is, that it causes possibly a lot of errors in the time before the new tables are created. and sending ping-messages regularly is not nice anyway. - localize the the actually global tables. every synth has its own tables, so that it doesn't matter, when a synth is closed. it has two disadvantages: it uses more memory for the tables, because the might be created several times. also it causes heavier dropouts when a patch is loaded, because on each patch-load, that contains bl oscs, the tables are created. - the user has first to load the bl*_tables-abs in order to create the tables in advance, before the oscillators are loaded. this needs additional user action, which is suboptimal - the first instance opens the patch, that creates the tables. the others check, if the tables are already 'on'. the table creating patch could be opened hidden by sending it a [vis 0( after opening. this approach needs no additional user interaction, the tables are created only once and it doesn't matter, when patches are closed. BUT: besides that this approach seems to look a bit workaroundish and ugly and the table creating patch remains open until pd is closed, it can't be implemented without externals (getdir) or it needs an additional configuration file to specify the path to directory, where the table creating abs are located. the problem here is, that the [open(-message to pd wants a path relative to the startup-location (whereas file-loading objects want a path relative to the patch-location). everyone of these approaches would work a bit, but none of them is THE solution. any other ideas? thanks in advance roman ___________________________________________________________ Der frühe Vogel fängt den Wurm. Hier gelangen Sie zum neuen Yahoo! Mail: http://mail.yahoo.de

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[PD-announce] pure:dyne 2.3.52 release - a GNU/Linux distro for media artists
by propaganda＠goto10.org 22 Mar '07

22 Mar '07

sorry for X please >> * . * ,--. * . ,---. --.,--.--.--.,---. --.,-' |--. ,--.--,--, ,---. * | .-. | || | .--' .-. :--' .-. |\ ' / \ .-. : * | '-' ' '' ' | --.--. `-' | \ ' | || | --. . | -' `----' --' `----'--'`---' -' / `--''--'`----' `--' goto10.org vs dyne.org `---' * . pure:dyne has been created to provide a complete and ready made environment for artists and developers who are looking for a free operating system dedicated to real time audio and video processing. The pure:dyne project provides tools and an optimized platform to try out and work on a large range of applications. It comes with optimized and tested software such as Supercollider, Icecast, csound, Packet Forth, fluxus and much more, including of course Pure Data and a great collection of essential externals and abstractions (PDP, PiDiP, Gem, GridFlow, RRadical, PixelTango ...). The Studio "classics" have not been forgotten (Ardour, LADSPA, seq24, Audacity ...) and numerous essential graphics software are also bundled (Inkscape, Gimp, Blender ...). The pure:dyne project is a growing community effort maintained by media artists for media artists. It is an ideal platform for audiovisual performances, installations and FLOSS+Art workshops and courses. --- Key Features: - Jack oriented GNU/Linux distribution - Complete FLOSS Home studio solution and live performance system - No bloat ! fast minimal desktops (fluxbox, evilwm, dwm) - Live Distribution (works the same on CD, HD, USB, ...) - UnionFS system and multiuser support - Low Latency Kernel (Ingo Molnar's -rt kernel patches) - Support for Firewire audio devices (FreeBoB inside) - Optionnal support for NVIDIA and ATI evil blobs - mmx + sse gcc optimisations applied when relevant - Compatible with any dyne:II modules - Easy installation, maintenance and update - SDK tools (dynesdk + milkman) and gcc included for customisations - International Languages support - Mactel support - More modules available via direct download ---- * * * Website/Doc -> http://puredyne.goto10.org . IRC server -> irc.goto10.org #pure:dyne MailingList -> http://lists.goto10.org/cgi-bin/mailman/listinfo/puredyne ---- DOWNLOAD NOW! Direct Download mirrors http://royalrabbit.goto10.org/rl/ Torrent (thx to Mute public library) http://publiclibrary.metamute.org:6969/torrent.html?info_hash=fca59ad639ea7… ---- * . pure:dyne developers are : * Aymeric Mansoux - http://320x200.goto10.org * Chun Lee - http://sonicvariable.goto10.org . Antonios Galanopoulos - http://stereocilia.goto10.org Karsten Gebbert - http://krgn.net Rob Canning - http://www.robcanning.info ---- GOTO10 would like to thank jaromil (http://rastasoft.org) for providing a very nice base system to work on and on which we can grow pretty things :* We would also like to thank everyone on the pure:dyne mailing list for their constant help, feedback and support. :* _______________________________________________ PD-announce mailing list PD-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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Help - filters & band limited oscillators!
by David Powers 22 Mar '07

22 Mar '07

Hello everyone, I tried google and it was no help, and the server for the list archive seems to be down temporarily. Anyway, I'm giving a free (as in free beer) workshop in Chicago in about 16 hours, on the basics of digital synthesis. I have decided to use Pure Data to give my presentation, and use mostly non-commercial software. However, I'm still missing the following for demonstrating "proper" subtractive synthesis: 1. Good, out of the box "analog-sounding" filters. I'm using [moog~] right now, but I'm not all that satisfied with the sound compared to the filters in my favorite VST's ... 2. Band-limited square and sawtooth waveforms. For teaching purposes PD is great, and ideal for my demonstrations. But as it is, I'm having to use VST's within PD in order to demonstrate a "nice sounding" synth. It would be nice to show that PD can do it without using stuff built in Steinberg's format. That would also let the Mac people replicate my work, if they are interested. Note, nobody in the workshop has ever tried Linux, except me, so Linux plugins are not helpful in this case. I will post my patches after I give the workshop, though they are nothing fancy ... just basic: sequencer - oscillator - vca - filter. Good for demoing though, I'm starting with additive first, then subtractive. ~David

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Pd-list March 2007