Pd-list August 2012

pd-list@lists.iem.at

93 participants
89 discussions

beamforming, mic array and audio source localization
by Cyrille Henry 01 Sep '12

01 Sep '12

Hello, did anyone ever worked on beamforming using microphone array for audio source localisation and noise reduction? thx Cyrille

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Re: [PD] Pd on a headless Raspberry Pi
by geoffroy 31 Aug '12

31 Aug '12

Great thread, I join the list mainly to work on such a a project, it's quite exciting to think of having a portable programmable open source synth engine on the PI with a portable midi controller. I am working with the AKAI mini mpk, which has pad and keys and knob and nice feature like arpeggiator, sustain and program and prog change which is nice for such a small device. With the PI the alsa is in alpha development on the arm platform and therefor won't be at it's best for a little while. The floating point integration in the latest system made the audio a lot better, as on the first gen OS of the PI the audio was just impossible. I tried to play with chuck for a while, and it created a lot of audio garbage. I think it will be a hit and miss until the ALSA is stable enough sadly. I read also that using usb headphone made the sound even better, but I haven't tried that myself. For the HDMI out what did you use? A dac from the HDMI ? I am looking for a simple solution to convert the HDMI to analog whether as a DIY simple solution or a really small and portable interface that could be boxed with the PI. Geoffroy Tremblay studio ponnuki Nope, I used a randomly generated sequence of notes made with phasors, ranging from 0 to 127 on the midi scale. Anyway, the quality of the analog output is not what concerns me here, since it sounds ok with aplay. The problem is that the same type of sound generated directly in Pd makes an awful lot of noise when i launch Pd at start-up, though it sounds ok on the hdmi output. Maybe it's something about the samplerate, no idea really. It's a pity that no real serious documentation exists on how the audio works (like the fact that the analog output is switched off when the hdmi in plugged in : is it in the hardware ? can it be configured to not work this way ?). I'll try an ask on the RPi forum. Nicorette is a brand that sells patches to stop smoking in France. I thought it was funny Cheers, Pierre.

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Wireless MIDI sync via OSC (on PD) - a video tutorial
by Eldad Tsabary 31 Aug '12

31 Aug '12

Hi all, Recently I created a wireless OSC/MIDI sync setup on PD for Concordia Laptop Orchestra (inspired by David Ogborn's work with the McMaster Cybernetic Orchestra), which may be of interest to others who are looking for a fairly accessible way to make beat-based music with a laptop ensemble. The tools include a master metronome, and a step sequencer which allows creating and performing beats with sampled sounds in real time as well as converting the OSC-based metronome to the more standard MIDI sync (therefore allowing typical widely-used sequencers on the same wireless sync setup). When configured patiently, this setup proved to be extremely stable. Here's a fairly straight-forward video tutorial on how to set such a network connection up and how to use these tools. http://youtu.be/liqOkAEEUL0 Let me know what you think. Cheers Eldad

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iemmatrix missing externals on win32
by Patrice Colet 30 Aug '12

30 Aug '12

Hello, I'm playing with some iemmatrix objects on win32, pd-extended 0.43.1, and got the following error message in console when trying [mtx_ei~] I could find almost all objects scattered in pdx, but not [mtx_pcolor], what is this object standing for? dsp ... couldn't create z~ ... couldn't create z~ 10 ... couldn't create mtx_pcolor ... couldn't create mtx_- 100 ... couldn't create mtx_* 0 ... couldn't create mtx_: ... couldn't create mtx_+ $1 ... couldn't create mtx_+ ... couldn't create mtx_./ ... couldn't create mtx_* 1 ... couldn't create Colet Patrice

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Textual pd primer
by Sam Raker 30 Aug '12

30 Aug '12

Hi guys, Longtime listener, first time caller. I was wondering if there's a good intro to text-only pd. I just got a raspberry pi, and I've heard a lot of chatter about how the -nogui flag solves a lot of weird dsp problems &c, plus it'd be nice not to have to waste a USB port plugging in a mouse as well as a keyboard/midi keyboard/sound card/m-audio box/etc. Plus my main comp is a mac, and I'm worried making my patches on my Mac and then getting them onto my pi will be a pain in the b. I've seen people say stuff like, "oh, just make a patch and look at it with a text editor and figure it out," but that's a bit over my head. Thoughts? -sam

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spherical harmonics, laguerre, legendre polynomials and such
by Alejandro D. Somoza 30 Aug '12

30 Aug '12

Did you ever guys tried to implement those or related on Pure Data? Is there any kind of patch out there with a whole bunch of mathematical common expressions? I'm not entirely familiar with [expr] but I will give it a try. Is it gonna be a nightmare or should I just dump values coded with Mathematica or Matlab from a txt file? My intention is to drive sound events with hydrogen wave functions. Any experience on that¿

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Read streaming from Pd ?
by Pierre Massat 30 Aug '12

30 Aug '12

Hi List, I was wondering if it was possible to read streamed audio data from the internet (to make a webradio receiver for instance). Is this possible using netreceive? I don't think i've even ever created this object in a patch... I suppose the answer will depend on the format of the streamed data. Any hint appreciated ! Cheers, Pierre.

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[PD-announce] music technology faculty position at Georgia Tech
by Jason Freeman 30 Aug '12

30 Aug '12

[please forward] GEORGIA TECH SCHOOL OF MUSIC MUSIC FACULTY POSITION DESCRIPTION: The School of Music seeks to fill a music technology position for the 2013-2014 academic year. This is a full-time, nine-month, open-rank tenure-track appointment at the assistant, associate, or full professor level, beginning August 2013. RESPONSIBILITIES: Teach courses in music cognition, digital signal processing, music information retrieval and/or other music technology courses as required. Teaching load is typically one lecture course and one research course per semester. Advise graduate students in collaborative and individual research projects, and theses. Pursue an active research agenda with a primary focus on music information retrieval, music cognition, and/or digital signal processing. A secondary focus in another area of music technology is desirable. Assist with administrative responsibilities with the graduate programs in music technology, the Georgia Tech Center for Music Technology, and the School of Music. QUALIFICATIONS: PhD or DMA in computer music, music technology, computer science, or electrical engineering is strongly preferred. ABD will receive consideration. RANK & SALARY: Rank and salary are open, competitive, and commensurate with experience and qualifications. SCHOOL OF MUSIC: The School of Music combines tradition and technology to create unique and exciting opportunities for students in all academic programs. Undergraduate students can participate in one of three Music Minors and graduate students can apply for the Master of Science and PhD in Music Technology. For more information please visit: www.music.gatech.edu. GTCMT: The Georgia Tech Center for Music Technology (GTCMT) is an international center for creative and technological research in music, focusing on the development and deployment of innovative musical technologies that transform the ways in which we create and experience music. The Center’s mission is to provide a collaborative framework for committed students, faculty, and researchers to apply their musical, technological, and scientific creativity to the development of innovative artistic and technological artifacts. The Center combines musical, technological, and cognitive research in an effort to create rich and expressive experiences for performers and audiences alike. Areas of interest include composition, performance, mobile music, machine listening, music information retrieval, digital signal processing, robotic musicianship, interactive music manufacturing, networked music, music perception, music theory, multimedia development, and education. For more information please visit: gtcmt.gatech.edu. COLLEGE: The College of Architecture at Georgia Tech champions advancements in the arts and the built environment through academic schools in architecture, building construction, city and regional planning, industrial design, and music. A leader in design innovation since 1908, students, faculty, and researchers work across boundaries to advance knowledge of designed environments at all scales, producing new realms of experience and creativity. The College is a cultural center of creativity and progressive thinking, and frequently hosts world-class performances, exhibitions, lectures, and symposiums. Committed to world-class research, the College is home to five interdisciplinary research centers and more than 20 research groups conducting projects that range from creating better simulation models for predicting building efficiency, to new assistive technologies and more effective healthcare environments. For more information please visit: www.coa.gatech.edu. GEORGIA TECH: The Georgia Institute of Technology is one the nation’s top research universities, distinguished by its commitment to improving the human condition through advanced science and technology. Georgia Tech’s campus occupies 400 acres in the heart of the city of Atlanta, where 20,000 undergraduate and graduate students receive a focused, technologically based education. Georgia Tech is consistently ranked in U.S. News World Report’s top ten public universities in the United States. APPLICATION: Letter of application, curriculum vitae, names, addresses, and telephone numbers of three references are required. Electronic submissions are particularly encouraged. Do not send supporting materials at this time. Review of applicants will be ongoing but all interested applicants should have materials to the committee no later than October 1, 2012. The review of applications and the interview process will continue until the position is filled. SEND MATERIALS TO: [for electronic submission] MusicTechSearch(a)music.gatech.edu [for surface-mail submission] Music Technology Search School of Music 840 McMillan Street Georgia Institute of Technology Atlanta, Georgia 30332-0456 MORE INFORMATION: Please contact Dr. Gil Weinberg, Director, GTCMT Telephone 404-894-8949 or e-mail gilw(a)gatech.edu Georgia Tech is an Equal Opportunity/Affirmative Action Employer _______________________________________________ Pd-announce mailing list Pd-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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"instantaneous" pitch follower
by Simon Iten 29 Aug '12

29 Aug '12

hi list, i found a way to get the pitch from a signal without any analyzing. it's a side effect of a gr-300 patch i've worked on in my spare time. maybe this is very obvious but for me this is great!! also note that i'm a musician, so sorry for any mistakes. it tracks with almost no latency and outputs pitch continuously. it all happens in the signal domain. if the pitch changes the follower ramps to the new pitch. so if you play fast notes you get some "smearing". sounds worse than it is (aka sounds) to my ears :-) this works great on my double-bass and i just wanted to share. it's very simple and far from perfect. try it out and let me know! simon

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Fwd: Call for Participation: live.code.festival @ IMWI Karlsruhe
by Holger 29 Aug '12

29 Aug '12

*** Apologies for Multiple Posting *** Call for participants for the international live coding festival to be held at the University of Music Karlsruhe, Germany. ================================================================= Dates: 19. - 21. April 2013 Venue: University of Music Karlsruhe, Germany Deadline for submission: 15th November 2012 Website: http://imwi.hfm.eu/livecode/ ================================================================= The live.code.festival will take place at the Institute for Musicology and Music Informatics (IMWI), University of Music Karlsruhe from 19th to 21th of April in 2013, organized by the IMWI, the local live coding band BenoÃ®t and the Mandelbrots and members of the live coding organization TOPLAP. It will be a weekend dedicated to this emerging discipline of computer music, to exchange ideas, demonstrate systems, enjoy concerts and establish connections between people and institutions interested in research and performance of live coding. Although the main focus of the festival is live coding of audio the festival will promote live coding in other disciplines as well. The festival will include live coding concerts and performances, talks, demonstrations, discussion panels, opportunities for collective improvisations and get-togethers. More information about deadlines, submissions and topics at http://imwi.hfm.eu/livecode

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Pd-list August 2012