“Partition n observations into k clusters in which each observation belongs to the cluster with the nearest mean, serving as a prototype of the cluster.”
At Wikipedia
http://en.wikipedia.org/wiki/K-means_clustering
Some of these points are more like the others
Open source audio feature detection library in c++ with Python wrapper.
By Music Technology Group at Universitat Pompeu Fabra
Sound analysis/synthesis tools for music applications
http://mtg.upf.edu/technologies/sms
By Music Technology Group at Universitat Pompeu Fabra
(update: So far, the tools are painfully slow under Macports. Ubuntu performance is way faster.)
https://github.com/MTG/sms-tools
These tools are used in: Audio Signal Processing for Music Applications by Prof Xavier Serra, Prof Julius O Smith, III. Sms-tools was designed to run in Ubuntu Linux. After many failed attempts, it is now running in Mac OS 10.9 using macports. Although the performance is better way better using Ubuntu – on the same Macbook.
I had tried using Anaconda – but ran into problems installing pygame.
Assuming that you already know how to install macports. Then install all the python modules described at the sms-tools github page. The macports versions of the modules are prefixed by py27- , For example:
also used: sudo easy_install cython
After installing all of the modules, then clone the sms-tools repository and recompile the Cython functions. You will get a screen full of warnings – but it shouldn’t matter.
Using JavaScript and the Web Audio API
By Joe Sullivan at Beatport Engineering
http://tech.beatport.com/2014/web-audio/beat-detection-using-web-audio/
Interactive navigable audio visualization using Web Audio and Canvas.
By Katspaugh
https://github.com/katspaugh/wavesurfer.js
Web Audio API
There are many links to Web Audio project right here on this blog: https://reactivemusic.net/?tag=web-audio
Comprehensive guide from Mozilla Developer Network https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API
Assign an instance of the Web Audio class to the object: context
context = new AudioContext();
Make an oscillator node
osc = context.createOscillator();
Connect the oscillator to the audio output (speaker)
osc.connect(context.destination);
Turn on the oscillator at the current time and plays a tone.
osc.noteOn(0);
Turn of the oscillator
osc.noteOff(0);
For more basics, see: “Using the Web Audio API”, at the Mozilla Developer Network: https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API/Using_Web_Audio_API
Demonstrated in class. Download from here: https://github.com/tkzic/web-audio-projects
HTML versions of examples from Boris Smus’s book: https://reactivemusic.net/?p=6094
javascript motion detection http://www.soundstep.com/blog/experiments/jsdetection/ ( broken)
infinite jukebox by Paul Lamere http://labs.echonest.com/Uploader/index.html
WebGL city http://alteredqualia.com/three/examples/webgl_city.html
Ring Visualizer http://airtightinteractive.com/demos/js/reactive/
Wave-pd1 (iOS) http://alxgbsn.co.uk/wavepad/
Gibber by Charie Roberts: http://gibber.mat.ucsb.edu/ (for demos, select all code, press <ctrl>-Enter to start, press <ctrl>-. to stop) (updated but check github)
Write a composition to induce magical effects.
Here is an example from Aseem Suri http://www.aseemsuri.com/journal/piece-of-mind-second-run-at-the-csound-conference
The project was derived from computer technology, but the overall effect was that people would go into a mysterious room, for a minute, and when they emerged, they would be smiling and happy.
Due on December 15th (last class)
Visual programming for the Web audio API.
by Daniel Pettersson
http://uglyhack.appspot.com/webaudiotoy/#
An earlier post: https://reactivemusic.net/?p=6157
Filters
We usually think of filters in terms of frequency. Any process that removes information is a filter. Curation or abstraction, for example.
