Tools – Federico Visi https://www.federicovisi.com music | sound | movement | interaction Sat, 14 Dec 2024 11:14:31 +0000 en-US hourly 1 https://wordpress.org/?v=7.1.3 https://i0.wp.com/www.federicovisi.com/wp-content/uploads/cropped-DSC06981-Edit-scaled-1.jpg?fit=32%2C32&ssl=1 Tools – Federico Visi https://www.federicovisi.com 32 32 33608136 New modosc objects for EMG & MoCap processing in Max https://www.federicovisi.com/new-modosc-objects-for-emg-mocap-processing-in-max/ Fri, 11 Jan 2019 16:33:08 +0000 http://www.federicovisi.com/?p=1843 During November and December 2018, I had the opportunity to spend 5 weeks as a visiting researcher at RITMO Centre for Interdisciplinary Studies in Rhythm, Time and Motion, an amazing centre of excellence recently inaugurated at the University of Oslo. In mid November, at the beginning of my stay, Luke Dahl and I presented modosc, our Max library for real time motion capture analysis to the attendees of the RITMO International Motion Capture Workshop. The library is the results of a collaboration between Luke and myself, and has been presented at various conferences in 2018, including NIME1 (paper) , and MOCO2 (paper).

While in Oslo, I had the chance to spend time in the RITMO Motion Capture lab and use their Delsys Trigno wireless EMG system synchronised with their Qualisys cameras. With that gear, I coded three new modosc objects for real-time processing of EMG signals synchronised with MoCap:

  • mo.qtmSig: binds data from QTM analog boards to new signal addresses in the modosc namespace (under /modosc/signals);
  • mo.zcr: calculates the zero crossing rate of a signal (useful feature for classification tasks);
  • mo.tkeo: calculates the Teager-Kaiser energy-tracking operator (TKEO) of a signal (useful for onset detection and other things, to learn more check out Eivind Kvedalen’s PhD thesis: http://folk.uio.no/eivindkv/ek-thesis-2003-05-12-final-2.pdf). I got the idea of implementing this interesting feature from Geert Roks, a student at Goldsmiths University of London currently collaborating with Prof Atau Tanaka.

Here are some video tutorials to get you started with modosc.

]]> 1843 modosc: Mocap & Max video tutorials https://www.federicovisi.com/modosc-mocap-max-video-tutorials/ Fri, 11 Jan 2019 15:33:50 +0000 http://www.federicovisi.com/?p=2071 These are some introductory video tutorials about processing motion capture data in real time in Max using the modosc library.

Modosc is a set of Max abstractions designed for computing motion descriptors from raw motion capture data in real time.


]]> 2071 Building a swarm poly synth using Max 8 new MC objects https://www.federicovisi.com/building-a-swarm-poly-synth-using-max-8-new-mc-objects/ Mon, 01 Oct 2018 10:04:46 +0000 http://www.federicovisi.com/?p=1886 I just downloaded the new Max 8 and here is a simple synth I built using the new MC (multichannel) objects. Each voice has 32 sawtooth oscillators, so with 6-voice polyphony you can get up to 192 oscillators playing at the same time. The dials control pitch spread and “deviated” release (meaning that each oscillator inside each voice will have a slightly different release time).

Since few people on social media asked me to share the patch, I made it available for download here. EDIT: I moved the files to GitHub: https://github.com/federicoVisi/max_mc_swarm_polysynth

NOTE: the patch is a quick and dirty experiment I did to try out the sound synthesis capabilities of the MC objects in Max 8. It is not a finished instrument and has some inconsistencies that should be fixed. You’re very welcome to edit the patch and get in touch to share ideas, although be aware that I might not have the time to provide technical support.

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