Pd-list May 2015

pd-list@lists.iem.at

80 participants
107 discussions

Echo supressor.
by Mario Mey 08 May '15

08 May '15

Hi, there. 2 years ago, I created this thread on the forum: http://forum.pdpatchrepo.info/topic/7340/echo-supressor. After talking about dBs, I thought I acchived what I was looking for. But no. Nor close. My last non-replied post on september 2014 says: /Bringing back to life an old thread... I tried to make this patch work LIVE... and it is not as thought./ /To make this patch work (*1), I should find the perfect delay to suppress the audio. Using 44100, the delay time can vary in 0.0226ms. So... it's almost impossible to get that. I only acchieve a flanger, nothing else./ /In the first Patch-Circle done in Argentina last Saturday, I talked with Pablo E. Riera about this and he told me about the adaptive external and the echo cancellation example... but there is no example like that (only intereference cancellation)./ /I will explain again (*2): the operator has a microphone (using one channel of input) and it sounds in a LCD (far away) (using one channel of output). Above the LCD I have a mic (second channel of input). This mic takes what the audience says and send to the operator headphones (second channel of output). The operator hears her own voice (with a delay). I want to supress this "return". It doesn't matter the latency, I just don't want the operator to hear her/him voice./ /I would need something that learn from the first microphone and get rid of what the second mic takes./ /I hope being clear in my explanation. Thanks in advace./ // (*1): the patch is in the thread. It does something like this: it takes the microphone (channel one), invert the wave (by using [*~ -1]), it uses a delayline to synch (because of the latency) and mix with the output. The intention is, obviously, suppress the microphone after been listened by the second microphone. [adc~] | \ | [delwrite~ echo-supressor-A 1000] | [delwrite~ echo-supressor-B 1000] [Hslider] # to synch. It depends on latency (it would have to be exact, here is the problem!) | [vd~ echo_supressor-A] | [*~ -1] | | [vd~ echo_supressor-B 1] | / [+~] | [dac~] (*2): I just updated the explanation How can I acchieve an echo suppresor? Is this possible? If I'm not clear in my explanation, please tell me. Thanks.

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[PD-announce] Embodied Sound: bodies, sounds and performance - concerts in London 13 May
by Marco Donnarumma 08 May '15

08 May '15

You are warmly invited to attend this symposium curated by Guy Harries and organised by CPAD (Centre for Performing Arts Development) at UEL. 'Embodied Sound' an evening symposium about contemporary live performance *Free entry, no booking required.* Wednesday 13 May at University of East London, University Square Stratford - US.3.38 (Studio 2) 1 Salway Road, London E15 1NF SYMPOSIUM - performances, paper, panel talk: 6.00-9.00pm WORKSHOP- "live sound/live vision": 4.15-5.45pm https://www.facebook.com/events/452454428255574/ The symposium ‘Embodied Sound’ is an evening’s exploration and discussion of the connection between sound and the performer's body in current live practice. The wide range of approaches includes vocal experimentation, use of the body’s various ‘signals’ captured through sensors, and the translation/interpretation of sound into live illustration. Performers will be presenting and discussing their live work, including: Marco Donnarumma, Sharon Gal and the Live Hazard Collective (Guy Harries and Valerie Pezeron. Guest speaker Zeynep Bulut (King’s College London) will present a paper on the connection between sound and the body, and Michael Bunce (UEL) will chair a panel with all the presenters, including Q&A. The symposium is preceded by an afternoon ‘live sound / live illustration’ workshop organised by Live Hazard Collective (4.15-5.45pm). All workshop participants will collaborate on an improvised sound piece, as well as live illustration in response to sound. ALL WELCOME (including those who do not consider themselves 'musicians' or 'illustrators'). The Centre for Performing Arts Development (CPAD) at the University of East London (UEL) is focused on developing original and innovative research in Performing Arts including Drama, Theatre & Performance Studies, Music, Dance and Creative Writing with a particular emphasis on socially engaged practices, performance philosophy and cultures, practice-based research, digital and interdisciplinary research. -- Marco Donnarumma Performer, body tinkerer, teacher and writer. #soundandmusic #biotech #freeculture EAVI - Goldsmiths, University of London ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Portfolio: http://marcodonnarumma.com Research: http://res.marcodonnarumma.com _______________________________________________ Pd-announce mailing list Pd-announce(a)lists.iem.at http://lists.puredata.info/listinfo/pd-announce

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[PD-announce] WebPd 0.3.0 released
by s p 08 May '15

08 May '15

WebPd 0.3.0 is finally out! Refactored from scratch, 100% pure Web Audio API, which means it should be as fast as it gets on the browser. check-it out https://github.com/sebpiq/WebPd feedback very welcome. -- *Sébastien Piquemal* -----* @sebpiq* ----- http://github.com/sebpiq ----- http://funktion.fm _______________________________________________ Pd-announce mailing list Pd-announce(a)lists.iem.at http://lists.puredata.info/listinfo/pd-announce

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Re: [PD] libpd for ios video tutorial
by Dan Wilcox 07 May '15

07 May '15

Yeah, looks good although I’ve never heard it pronounced “libe P D” before. -------- Dan Wilcox @danomatika danomatika.com <http://danomatika.com/> robotcowboy.com <http://robotcowboy.com/> > On May 7, 2015, at 1:56 AM, pd-list-request(a)lists.iem.at wrote: > > From: puredata(a)11h11.com <mailto:puredata@11h11.com> > Subject: [PD] libpd for ios video tutorial > Date: May 6, 2015 at 9:36:47 PM EDT > To: pd-list <pd-list(a)iem.at <mailto:pd-list@iem.at>> > > > https://www.youtube.com/watch?list=PLn3ODBv0ka5jDXKS374IhS95GeXp4sTGt&v=uOd… <https://www.youtube.com/watch?list=PLn3ODBv0ka5jDXKS374IhS95GeXp4sTGt&v=uOd…> > > neat!

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libpd for ios video tutorial
by puredata＠11h11.com 07 May '15

07 May '15

https://www.youtube.com/watch?list=PLn3ODBv0ka5jDXKS374IhS95GeXp4sTGt&v=uOd… neat!

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GEM external "pd_darwin: mach-o, but wrong architecture"
by Jaime E Oliver 06 May '15

06 May '15

Hi all, I have successfully compiled a GEM external in OS X using the latest gem from git and Pd 0.45-5. When I try to load this external I get that it finds it, but complains about the architecture: […]/Gem-master/extra/pix_demo/pix_demo.pd_darwin: mach-o, but wrong architecture pix_demo ... couldn't create I assume I need to add a flag but not entirely sure which one or where to put it. Any suggestions? best, J

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Q: about PD data structures
by William Huston 06 May '15

06 May '15

Sorry if this is a newbie question. I know someone must have already done this, and don't want to reinvent the wheel. I know how to do this in a different language like Perl, which has very rich data structures for scalars (strings, integers, floats), lists (arrays of scalars), and hashes (arrays with a string index), including multi-dimensional ones.... What I want to do is to be able to store and recall a symbol and also a list given an integer index. Like given index 7 might return "SUS4" and [1 4 5( and index 9 might return "MAJ7" and [1 3 5 7(. I would be grateful to learn a PD native way of dealing with data structures like this. Basically looking for a) multi dimensional arrays (nice, but optional) b) arrays which contain symbols, lists, or floats c) persistence Many thanks! Vanilla solutions preferred, but don't limit yourself to that :) BH -- -- May you, and all beings be happy and free from suffering :) -- ancient Buddhist Prayer (Metta) Don't forget to sign the *Pledge to Resist* *the Constitution Pipeline:* - *The Pledge: TinyURL.com/Pledge2ResistCP <http://TinyURL.com/Pledge2ResistCP>* - *More info: TinyURL.com/Pledge2ResistCP1 <http://TinyURL.com/Pledge2ResistCP1>*

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constructing ASCII messages
by Derek Holzer 05 May '15

05 May '15

Hi folks. Been a while. I'm working on a project where I must construct ASCII messages to the microcontroller inside a motor. It accepts messages in the following format: NODE COMMAND ARGUMENT CARRIAGERETURN (hereafter CR) For NODE 0 V 0 CR, in ASCII that would be: 48 86 53 48 13 So, using the following objects: [num\ <----ARGUMENT GIVEN HERE | [spell] <----convert number to ASCII | [list prepend 48 86] <---- NODE 0, COMMAND V | [list append 13] <----CR | [comport] I can construct and send ASCII messages where the ARGUMENT is a single digit. All well and good when working with single digits, but the problem is that the ARGUMENT is a dynamically changing number of a variable length in ASCII characters, and I am banging my head against the keyboard trying to work out how to do this. [spell] spits out the ASCII of "666" (for example) in a sequence, rather than as a list of three elements. 54 54 54 What kind of object allows me to send a variable number of arguments which could be packed into a single message without "padding" (zeros in place of "missing" arguments)? It should allow "666" to appear as "54 54 54", or "1024" to appear as "49 48 50 52", or "44100" to appear as "52 52 49 48 48", rather than as each individual element at a time. Other options using objects like [sprintf] could also be considered. I am sure I am not the only person to have this problem to solve. Thanks for your thoughts! Pls CC with replies as I am not actively monitoring the list these days. Thanks! Derek -- derek holzer noise.art.technology http://macumbista.net

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[PD-announce] PD Users Meeting Berlin this week
by Malte Steiner 04 May '15

04 May '15

PD Berlin meetings are from now at c-base (Rungestrasse 20 Berlin) every first and third thursday in the month beginning 20:00, the next one is this weeks thursday, the 7. May. This time we want to explore midi and OSC programming with PD and jam a bit. Looking forward to it and thanks c-base for hosting us. What we do: The meetings don't replace workshops (which are offered extra ;) ), scope of these meetings can be any (or none) of the following: patch/project showcase programming work on general Pd documentation help for beginners (installation, programming tips, ...) or something else you want to do ... Just come along, bring your laptop and sit down with us. The bar is open during the meetings. Necessary prerequisites are only a computer and good mood. If Pd isn't on it, we'll download and install it. http://puredata.info/community/groups/pd-berlin/pd-berlin-users-group/ We thank c-base for providing the space and network for the meetings. _______________________________________________ Pd-announce mailing list Pd-announce(a)lists.iem.at http://lists.puredata.info/listinfo/pd-announce

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[ggee/notch] / [ggee/bandpass] seem to work at default/fixed samplerate of 44100
by Raphaël Ilias 04 May '15

04 May '15

Hello, I was testing the [bandpass] and [notch] object's from "ggee" library, which compute coefficients values for vanilla's [biquad~] and discovered that the center frequency wasn't the one expected, but was shifted something like 10%. After a few measurement I found that the real center frequency was around 1.08841 upwards the ferquency value set to [bandpass] or to [notch] inlets... ...and I later realized that 48000/44100 = 1.088435... and that on my computer, pd is working at 48000 Hz. So, apparently these objects are calculating the coefficients with an supposed samplerate of 44100 Hz. (i'm using pd-extended 0.43-4) cheers, Raphaël

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