Pd-list June 2010

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144 participants
304 discussions

Re: [PD] plugin~ external
by Kim Cascone 15 Jun '10

15 Jun '10

> > it does work globally for all LADSPA plugins hosted by [plugin~]. > > i have to say that you were using it wrongly (though i cannot find the > email were you explained exactly what you were doing: all threads are > totally messed up; the subject became meaningless;...) > I was following your instructions which I am pasting below: > plugin~ syntax > > the message is: > "port <symbol:direction> <symbol:type> <symbol:name> <float:lowerlimit> > <float:upperlimit>" > > with <symbol:direction> being either "in" or "out" > with <symbol:type> being "control" or "audio" > with <symbol:name> being the name of the port (e.g. "Amplitude random > (%)") > > and lower/upperlimit define the valid range of the value. > > for controlling, you use "control <symbol:name> <float:value>" > > <symbol:name> is not case-sensitive, and it tries to find a simple match. > e.g. "Amplitude random (%)" can be controlled with "amp" or "AMPLItude" > or "Amplitude random (%)". > it will take the first port that matches, so if you have parameters > "FrequencyUpper" and "FrequencyLower", then "freq" will match > "FrequencyUpper", in order to control the other param you have to use at > least "frequencyl" > in short it was something like: > info gave you something like the following > <snip> > info: port out audio Out 0 1 > info: port in control Trigger 0 1 > info: port in control Velocity 0 10 > info: port in control Frequency (Hz) 0 20000 > info: port in control Resonance 0.001 1 > info: port in control Frequency Ratio 0 10 > </snip> > > and you tried to access (say) the "Frequency Ratio". > you tried (without success) to use things like "frequencyratio" and > "frequency_ratio". > > this does not work. > that is correct - it does not work > the control name will be matched against all port-names and the first > with an exact match (case-insensitive; only the number of characters > given will be checked) will be used. > > the _only_ freedom you have, is case-insensivity and > number-of-characters (as long as it uniquely identifies the parameter > you want to address); you cannot exchange characters at will (neither > can you replace "X" with "U" nor " " with "_") > > > so "Trigger" match the first control port (as well as "T" and "trigger") > "Frequency" (and "f", "freq",...) will match "Frequency (Hz)" (since > this will be found before "Frequency Ratio".. > > if you want to access "Frequency Ratio" than you have to use something > that matches this name until it becomes unique (that is: up to > "Frequency R", to differentiate it from "Frequency (") > since all characters must match exactly (apart from the case) you have > to construct a symbol with a space in it. > again, there is no use replacing the space with "_" or "X" or "space" or > nothing at all. > > it might be a good idea to allow underscores as well, but so far nobody > has asked for it. > also, i think that this is probably not so important, as you can just > reuse the symbol you got out of [plugin~]. > I'm not sure this is a very good approach to using the [plugin~] external and I'm surprised you don't know about the following schema that Tim Vets posted which is much more simple than needing a manual on 'grep' for getting correct control names: > [0\ > | > [control #n $1( > | > [plugin~ svf] > > where n is the number of the parameter (so #1 or #2 or #3 ..etc) isn't this much clearer and 'somewhat' more intuitive? maybe [plugin~] should count control ports and use this <#n> instead? this is what Derek already put in the manual (albeit needs some corrections) and how I'll continue with my contribution to that chapter > anyhow, personally i don't think that the info-interface of [plugin~] is > particularily cleverly done. > if a Pd user needs a semester of 'how to use grep' in order to send control data to a [plugin~] then I have to agree wholeheartedly > i never used this object before. > i only made it not crash any more. > i probably will never use it again. > then you should probably be glad for this sort of feedback? isn't this all helping the Pd devs to chase down these bugs so they can be resolved? > i don't think that using all those VST/LV2/runzelpunzel plugins out > there will make anything more professional. plugins are an important part of all professional sound designers toolkit - I speak as a professional with 30 years in the industry :)

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Re: [PD] readanysf~ error
by Kim Cascone 15 Jun '10

15 Jun '10

> > *** minf : 16 (unknown marker) > *** elm1 : 7506 (unknown marker) > data : 140114520 > *** regn : 92 (unknown marker) > *** umid : 24 (unknown marker) > *** DGDA : 6602919 (unknown marker) also, go in and remove any/all markers in the wav file that may have been created in an editing app beforehand

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readanysf~ error
by Kim Cascone 15 Jun '10

15 Jun '10

Derek just taking a shot in the dark here but check the endianess of the wav files sometimes different OS X apps will save out .wavs with big-bndian vs little-endian > The default byte ordering assumed for WAVE data files is > little-endian. Files written using the big-endian byte ordering scheme > have the identifier RIFX instead of RIFF. ciao! KIM

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Pd 0.41.4-extended snow leopard super-slow startup
by Dafydd Hughes 15 Jun '10

15 Jun '10

Hey folks A classmate of mine has installed Pd 0.41.4-extended on her MacBook Pro (not the super-new one, but previous gen). Initially we thought it just wasn't loading, but she let it sit and it does load, but takes an incredibly long time (possibly 5 minutes?) to start. She hasn't tested audio or anything yet. We're going to try and figure out what's up tomorrow - I thought I'd ask if anybody might know where to look or what to look for. I plan to test audio then try and run from the terminal and see if that makes a difference (any reason it would?) Sorry to be so light on details. I'll hopefully know more tomorrow - just want to arm myself ahead of time. cheers & thanks for any help dafydd

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Re: [PD] plugin~ external
by Kim Cascone 15 Jun '10

15 Jun '10

> On 2010-06-14 22:27, Kim Cascone wrote: > >> > >> > =============== >> > first level of confusion >> > =============== >> > >> > occurs when a user is looking for the 'lpf' messages on the command line >> > using >> > >> > analyseplugin lpf >> > >> > they won't find it unless they read the console carefully and see the >> > LADSPA plug is actually called 'cmt.so' >> > >> > and if they type in >> > analyseplugin cmt.so >> > >> > they will have to scroll through the dozens of plugins inside 'cmt.so' >> > for the lpf plug >> > >> > not a bug per se but there must be other plugs that come bundled like >> > the cmt.so which present a similar confusion...? >> > > > not a bug per se at all, but rather a problem with "analyseplugin" don't > you think so? > I'm not groking the logic here...if cmt.so comes with a dozen or so plugs bundled within it, which is not apparent by looking at your LADSPA dir, then how is this a bug with analyseplugin? it seems to me that analyseplugin is reporting exactly what is 'inside' cmt.so and not buggy at all in fact, if you look at your LADSPA plugins in an app such as Ardour you'll see that it pokes inside of cmt.so and lists all the plugins inside of it just like analyseplugin does on the command line I think there should be a similar way to get at this very same info in Pd using [info] > > >> > >> > =================== >> > the second level of confusion >> > =================== >> > >> > occurs when sending [plugin~ lpf] an [info] message in a patch >> > >> > the [pd/print] object reports to the console: >> > >> > b: port in control Cutoff Frequency (Hz) 0 0.5 >> > b: port in audio Input 0 1 >> > b: port out audio Output 0 1 >> > >> > leading the user to believe that the Cutoff Freq is controlled with a >> > float from [0 - 0.5] >> > instead of [0 - 0.5*srate] (n times the sample rate) >> > >> > while 'analyseplugin cmt.so' reports: >> > >> > [...] > >> > Ports: "Cutoff Frequency (Hz)" input, control, 0 to 0.5*srate, >> > default 440, logarithmic >> > [...] > >> > "Input" input, audio >> > "Output" output, audio >> > >> > >> > as you can see the [pd/print] object is not reporting the correct >> > message to send for 'cutoff freq' >> > it SHOULD read: >> > b: port in control Cutoff Frequency (Hz) 0 0.5*srate >> > >> > but is reporting >> > b: port in control Cutoff Frequency (Hz) 0 0.5 >> > >> > so it seems the [pd/print] object is not passing the '*' symbol >> > > i'm sure you don't want to get a symbol "0.5*srate" for the upper boundary. > if the plug designer uses '0.5*srate' to denote that a control will allow you to go from 0Hz -> nyquist then they are obviously operating under the belief that passing a '*' is not a big deal for apps like Ardour and other LADSPA hosts... although now that I'm looking at the controls in Ardour for cmt/lpf plugin the range is stated as: [2.205 - 22050] which is [0.0001*srate - 0.5*srate] so there must be some way that Ardour is parsing this and making it sensible to the user without a) code for that specific plugin's data or b) having to resort to the command line to invoke analyseplugin > the idea is of course, to do something meaningful with the data you get, > e.g. set the boundaries of a slider or similar. you wouldn't want to > parse the meaing of the symbol "0.5*srate" yourself in Pd as it is. (at > least: i wouldn't) > I've parsed worse in Max using [sprintf] and don't see this as a big deal but most likely users would never want to parse the control info simply because it doesn't provide anything reliably useful for controlling a plug in the first place the schema you suggested of the plug grepping the control name is not how things work (across all plugins) from what I found out whereas the following does: manually count the number of controls reported by [info] and then use [control #n $1] (and only when using [pd/print] because using [print] doesn't pass parentheses) my point is really that if the [pd/print] external is not passing the info supplied by the plugin regardless of what it is then it something is broken somewhere is there a LADSPA spec for callback data? > if you are only interested in some visual feedback (e.g. the printout at > the console), then you probably should just use "analyseplugin"... > but you just stated above: 'not a bug per se at all, but rather a problem with "analyseplugin" don't you think so?' so I should now rely on 'analyseplugin' for accurate info? > >> > >> > is this a known issue or can it be changed? >> > > > it should be possible to change it. > the obvious solution is to pre-multiply with the srate if needed. > maybe a look at the Ardour code could provide a possible strategy but in either case HOW TO correctly send [info] to the [plugin~] is not clearly documented anywhere > another possibility would be to add extra information whether the > boundaries have to be multiplied by something. >

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A10Lab - 5 Day Pure Data Workshop - 1 week left!
by Ryan Jordan 15 Jun '10

15 Jun '10

please forward to interested people(s)>> A10Lab presents a 5 Day Pure Data Workshop lead by Luca Carrubba and Oscar Martin. !!!CRAZY GENERATIVE A/V MACHINES!!! Monday 21st - Friday 25th June, with a live performance on Saturday 26th June. The aim of this workshop is to learn simple programming strategies for the creation of audio/video software tools for live performances. Generative or interactive pieces of software that let artists create and control video streams and audio processing in real time. During the workshop we will use puredata, a free (as a bird and as a beer) graphical programming language particularly focused on the processing of audio and video data in real time. Puredata is a tool for artists who want to experiment with a different creation pattern, with a freedom to build from scratch their own instruments. You don’t need to be a programmer to begin to build your tool. In 5 the days long workshop you will learn the basics of the language, how to manipulate or create a video and how to play with audio. At the end of the workshop all the participants will take part in a performance event open to the public. >From Monday 21st June to Friday 25th June 2010. 3 hours a day. 7pm - 10pm. Saturday 26th June --- Live evening performance event with invited performers and all participants from the workshop!!! Book now! Participation is £100 and limited to 20 people. Book online here > http://www.eventbrite.com/event/695932553/ For more information contact: info(a)a10lab.com http://a10lab.info/ Workshop leaders: Luca Carrubba Graduated summa cum laude in Sociology of Communication, Luca Carrubba has worked for 5 years under the new media field as artist and independent researcher. Formed between institutional and underground medialabs in Barcelona and Madrid, he focus its production on the interaction between audio and video, always share the practices and codes. Based its action on certain keywords like DIY (do it yourself), knowledge sharing, accessibility, recycling and social movements. Also participated in many workshops to spread free software/technology/culture among Italy, Spain, England, Germany, France, Argentina, Brazil, Palestine and China. He is now professor of new technologies for art in Libera Accademia delle Belle Arti, Brescia, Italy. His works can be found at: www.estereotips.net www.estereotips.net/qeve/ www.gemq.info Oscar Martin Oscar Martín holds a Fine Arts degree from the Universidad Politecnica of Valencia, specializing in Sculpture and Audiovisual Media. That is where he came into contact with sound art through Leopoldo Amigo y Bartolomé Ferrando. A sound explorer, he bases his work on the deconstruction of field recordings and the creative use of technology errors. Luthier-digital with a “pure data” environment, which he uses to develop his own experimental tools for processing and real time algorithmic-generative composition. He can be placed somewhere between Computer Music, the Aesthetics of Error, and generative Noise. He seeks the creation of virtual sound universes, imaginary soundscapes that encourage active listening and a different sensibility toward the perception of sound phenomena. He works under the open source paradigm. All his work is published under Creative Commons licence, by different recording labels and netlabels (dronerecords, tecnoNucleo, costellam, etc.) . more info: http://noconventions.mobi/noish/ _________________________________________________________________ http://clk.atdmt.com/UKM/go/195013117/direct/01/ We want to hear all your funny, exciting and crazy Hotmail stories. Tell us now

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readanysf~ error
by Derek Holzer 15 Jun '10

15 Jun '10

Hello August, list.... I'm helping a student's installation, and we have created a patch which uses 24 instances of readanysf~ to read from 24 different soundfiles between 15min and one hour in length. All sound files are mono, 16 bit, 44.1KHz WAV_PCM format. The problem is that, after a length of time, the readanysf~ objects output noise rather than the soundfile. It is not the result of any single soundfile, and many or all of the readanysf~ objects can be affected by this simultaneously. I have attached the abstraction in question. The object is instantiated as [readanysf~ 1], in other words the block size and and buffer size are defaults. Sample terminal output is as follows while the patch is running: Created new readanysf~ with 1 channels and internal buffer of 24 * 64 = 1536 Current file is either invalid or an unsupported codec. Current file is either invalid or an unsupported codec. Current file is either invalid or an unsupported codec. Current file is either invalid or an unsupported codec. Current file is either invalid or an unsupported codec. Current file is either invalid or an unsupported codec. Current file is either invalid or an unsupported codec. Opening each soundfile individually with readanysf~ and sending "play" and "pause" messages reports no errors whatsoever, however. I have sndfile-info data for all of the soundfiles. The only irregularity I see in this is one file which reports: Unknown chunk marker at position 6087587. Resynching. Besides that, most of the files report something like this: File : F_DOK6.wav Length : 146725772 RIFF : 146725764 WAVE bext : 602 fmt : 16 Format : 0x1 => WAVE_FORMAT_PCM Channels : 1 Sample Rate : 44100 Block Align : 2 Bit Width : 16 Bytes/sec : 88200 *** minf : 16 (unknown marker) *** elm1 : 7506 (unknown marker) data : 140114520 *** regn : 92 (unknown marker) *** umid : 24 (unknown marker) *** DGDA : 6602919 (unknown marker) End ---------------------------------------- Sample Rate : 44100 Frames : 70057260 Channels : 1 Format : 0x00010002 Sections : 1 Seekable : TRUE Duration : 00:26:28.600 Signal Max : 11627 (-9.00 dB) Someone suggested the noisy output may be the result of a buffer problem, but I am not sure who I could verify or correct this. I checked with "top" while the noise was happening and saw no evidence that Pd was using any more memory than usual, and the CPU meter reported 30%. Hardware is an Intel Mac Mini, software is Pd-Extended 0.41.4. Any suggestions or other diagnostics I could run are appreciated. Best! Derek -- ::: derek holzer ::: http://macumbista.net ::: ---Oblique Strategy # 136: "Remove specifics and convert to ambiguities"

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HID double event bug
by James Dunn 15 Jun '10

15 Jun '10

I filed a bug report some time ago here: https://sourceforge.net/tracker/?func=detail&aid=3002665&group_id=55736&ati… Just tested this with Pd version 0.42.5-extended-rc2 on Ubuntu 10.04 and it's the same. Basically I get two events for each key press like this: [hid] opened device 4 (/dev/input/event4): AT Translated Set 2 keyboard print: key key_space 1 print: key key_space 1 print: key key_space 0 print: key key_space 0 Thought I'd mention here too as surely this is a bug? Not a major problem, but it means I always need an [alternate] object or similar. This then became a problem when working on a patch for two note chords when the key commands do not always arrive in the same order and some notes would stay on. James

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more Pd muzik at noconventions.mobi
by xà 15 Jun '10

15 Jun '10

:...:... :::.... Dear List Some more PD muzik.. First i want to introduce the new dAAX!'s site after many derives in different 'taz' on-line-lands... http://www.noconventions.mobi/x!/ I invite you to download and listen a couple of dAAX!'s releases that now have been spread over the net, after been caught in the HD for many time. These have been produced in 2008 and 2009.... _______________________________________________ 2616 http://www.noconventions.mobi/x!/rilises/2-6-1-6 + ((-_-)) http://www.noconventions.mobi/x!/rilises/o_o _______________________________________________ 2616 (EP) is an exercise of composition and programming from 0. It is a single piece of 26 minutes and 16 seconds divided in two parts (aaa/bbb). In the piece the generative soundscapes are produced in realtime with different techniques of synthesis (FM, granular,resynthesis), and with a variable-range sequencer. Recorded in live at La Floresta (Barcelona) in 2008. ###~#~######## ((-_-)) is a release (EP) produced fragmentally in the whole 2009, where 4 trakks with its own character connects algorithmic and experimental sounds with the next modes and styles: dub (((- -))) electro-tech d((- -))b IDM !- -! down Tempo :- -: _____ enjoy !! salut! x!

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pd / crash problem
by henning m. lederer | visual communication & animation 15 Jun '10

15 Jun '10

Hello. With the help of my tutor Phil Archer I have coded an endless- loop pd-patch which is playing randomly a movie clip out of 50 different Quicktime-films, selecting a new random clip one after each other, playing the film fullscreen. The coding is working very well (attached picture) but there is a problem with the stability: the application is regularly crashing after about 4 to 5 minutes. I donÂ’t know the reason, but I had a look at the activity window and there I could watch this: pd itself is increasing the physical storage... starting at about 70mb and getting bigger and bigger a new clip is chosen. When it reaches about 210 - 220mb after 4 or 5 minutes, the app crashes. -- The Report says: Process: pd [504] Path: /Users/hml/Desktop/Channels_TV.app/Contents/Resources/Scripts/../bin/pd Identifier: pd Version: ??? (???) Code Type: X86 (Native) Parent Process: Pd-extended [501] Date/Time: 2010-06-14 09:05:46.112 +0200 OS Version: Mac OS X 10.6.3 (10D573) Report Version: 6 Interval Since Last Report: 104758 sec Crashes Since Last Report: 18 Per-App Crashes Since Last Report: 16 Anonymous UUID: DB66E35A-AF9A-41C8-AC29-6923433D8B95 Exception Type: EXC_BAD_ACCESS (SIGBUS) Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000010 Crashed Thread: 0 Dispatch queue: com.apple.main-thread Thread 0 Crashed: Dispatch queue: com.apple.main-thread 0 org.perian.Perian 0x188aa92c decode_nal_units + 1228 (...) Thread 0 crashed with X86 Thread State (32-bit): eax: 0x00000010 ebx: 0x00000004 ecx: 0x00000000 edx: 0x00000010 edi: 0x1a8cc000 esi: 0x00000000 ebp: 0xbfffce18 esp: 0xbfffc800 ss: 0x0000001f efl: 0x00010246 eip: 0x188b792c cs: 0x00000017 ds: 0x0000001f es: 0x0000001f fs: 0x00000000 gs: 0x00000037 cr2: 0x00000010 -- ...and loads of other stuff. I am runninng this app on my Mac Book Pro: 3,06 GHz, Intel Core 2 Duo, 8 GB 1067 MHz DDR3, Graphics: NVIDIA GeForce 9600M with Pd version 0.41.4, GEM: ver: 0.91.3 Â‘tigitalÂ’ The Quicktime films are compressed with the animation codec, without sound, ratio: 1680 x 1050, playing fullscreen. But size-wise the biggest film is not more then 15mb; most of the films are less then 1mb. Any ideas what the problem could be? Thanks a lot and greetings from Germany, Henning -- /// henning m. lederer /// visual communication& animation /// master of digital arts /// diplom-designer [fh] /// +44 (0)7551 960 327 (uk) /// +49 (0)179 572 38 13 (germany) /// www.led-r-r.net /// henning(a)led-r-r.net

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Pd-list June 2010