Author Archives: matthias

IEM Computermusic Ensemble Concert Graz and Vilnius

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ICE @ Porgy&Bess ViennaOn Tuesday, March 20th, 2012 will be the next concert of ICE – IEM Computermusic Ensemble. This networkconcert will be held in two locations at the same time. Listen to it in Graz – Austria or Vilnius – Lithuania.
LMTA[1] central building – Room 306, Vilnius
IEM[2] Cube – Graz

Announcement in lithuanian language
Announcement in english language

concert starts at
20:00 Graz local time
21:00 Vilnius local time

“extended fields” – ICE (IEM Computermusic Ensemble)

Musicians:
– Jamilla Ballint
– Clara Hollomey
– Wen Liu
– Peter Venus
– Marian Weger
– Matthias Kronlachner (remote from Vilnius)
– Uluğ Can Kazaz (remote from Vilnius)
– guest: Daniel Hojka

Director: Winfried Ritsch
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  1. [1]Lithuanian Academy of Music and Theatre, Gedimino pr. 42, LT-01110 Vilnius, Lithuania↩
  2. [2]Institute of Electronic Music and Acoustics, Inffeldgasse 10/3, 8010 Graz, Austria↩

non-standard scale/tuning playback via midi

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In my composition studies at “lietuvos muzikos ir teatro akademija” in Vilnius I came across using 12 tone techniques from Schoenberg/Hauer in combination with the Bohlen-Pierce[1] scale discovered independently by Heinz Bohlen in early 1970’s and John Pierce.

This scale is based on mainly odd frequency ratios and divides the duodezime (ratio 3:1) into 13 steps. You can listen to the equally tempered scale here:

If you want to know how to use non-standard tunings and scales in combination with your MIDI keyboard or favourite music notation software read on!
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  1. [1]Bohlen-Pierce Site http://www.huygens-fokker.org/bpsite/↩

pd-external: pix_openni 0.10

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If you are working with Xbox Kinect Sensor here is another goodie for you – A pure data / Gem external to get Kinect rgb and depth streams as well as skeleton tracking and multiple hand tracking via OpenNI[1]

Download the packed Binaries for OSX and Windows pix_openni-0.10.zip.
Latest sourcecode available at github: http://github.com/kronihias/pix_openni

Look at this page if you don’t know how to install a Pd-External.

To control tilt, led and output accelerometer data you can use libfreenect based http://github.com/kronihias/freenect.
To get audio streams you can use libfreenect based http://github.com/kronihias/freenect_audio.
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  1. [1]http://www.openni.org↩

pd-external: pix_freenect 0.10

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(C)2011 Matthias Kronlachner

Version 0.10 of pix_freenect external for Pure Data/Gem now available.
Sourcecode and binary for OSX and Ubuntu 11.10 available at github: https://github.com/kronihias/pix_freenect

Look at this page if you don’t know how to install a Pd-External.

The pix_freenect external can output rgb and depth simultaneously from multiple Kinect sensors.

Features:

  • open specific Kinect sensor by serial number – useful for multiple Kinect installations
  • output registered depthmap -> rgb and depth image are aligned
  • output depthmap directly as 16 bit [mm] values
  • resolution of rgb image can be set to 1280×1024

To get audio streams you can use http://github.com/kronihias/freenect_audio.
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4 room concert @ Rondo Graz

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Marian Weger, David Pirró, Matthias Kronlachner, Peter VenusWednesday, November 30th 2011 there will be a music performance with David Pirrò, Marian Weger, Peter Venus and Matthias Kronlachner at the birthday party of the Rondo Ateliers.
For this event we gonna perform in four separated rooms – the listener can choose between listening to one musician solo or enjoy the concert in a separate area where everybody can be heard, but nobody seen.

Trailer of the concert:

(binaural recording – listen with headphones)

4 channel recording:

(listen to this if you have 4 speakers connected to your computer)

roundabout flyer
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Kinect Headtracking with OSC Support

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left: GEM Window, right: head pose estimation by G.Fanellibased on
Real Time Head Pose Estimation from Consumer Depth Cameras by Gabriele Fanelli [1]

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download source and windows/OSX binaries: https://github.com/kronihias/head-pose-estimation

Application that detects head position from a depth image provided by Microsoft Xbox Kinect Sensor in x,y,z and Euler Angles (pitch, yaw, roll) from multiple persons.

–> needs no calibration!!

Application sends data as OSC[2] Message in the format:

/head_pose [User_ID] [x] [y] [z] [pitch] [yaw] [roll]
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  1. [1]http://www.vision.ee.ethz.ch/~gfanelli/head_pose/head_forest.html↩
  2. [2]Open Sound Control (OSC) is a message based communication protocol for multimedia systems.↩

Premiere “Unter Umständen”

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Kurzfilmabend Kino LenzingThursday – Nov. 3rd, 2011 will be the premiere of the 30min shortmovie Unter Umständen by Andreas Kurz.
Location: Lichtspiele Lenzing
I have been responsible for everything concerning sound.
There will also be a screening of older shortmovies done by Rubatofilm where I was involved in filmmusic.

Kinoabend – Plakat [PDF]

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