Index of /~echew/presentations/MaMuX2005

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In this directory is the PDF file for the presentation at the
MaMuX seminar on March 13, 2005, organized by Moreno Andreatta, on 
"Logic and Computability in Computer Science and Music"
("Logique et calculabilite en informatique et en musique")

The presentation is titled:
"MuSA.RT - Tonal Visualizations that Dance to the Rhythm of the Music."
by Elaine Chew (echew@usc.edu) and Alexandre Francois (afrancoi@usc.edu)

Seminaire MaMuX
Mathmatiques, musique et relations avec d'autres disciplines
IRCAM, salle Igor Stravinsky
1, place Igor-Stravinsky 75004 Paris
Sunday, March 13, 2005.

The MaMuX website is at 
http://recherche.ircam.fr/equipes/repmus/mamux

Click on ecaf-MaMuX-20050313.pdf for the presentation.

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"MuSA.RT - Tonal Visualizations that Dance to the Rhythm of the Music."
by Elaine Chew (echew@usc.edu) and Alexandre Francois (afrancoi@usc.edu)

ABSTRACT: We present MuSA.RT, an interactive music analysis and
visualization system that tracks and displays the trajectory of the
tonal content and context of music in real-time during a live
performance.  MuSA.RT stands for Music on the Spiral Array
. Real-Time.  The system performs the dual role of converting musical
performances to mathematically elegant graphics, and of providing a
means of visualizing the inner workings of tonal induction and
tracking algorithms.  The input device is a piano keyboard with MIDI
output.  The tonal structures are computed and mapped to the display
instantaneously in response to the MIDI input.  Each performance of a
piece creates distinctive spatio-temporal patterns inside the Spiral
Array that are characteristic of that piece and that particular
interpretation.  The virtual viewpoint can be manipulated via a game
controller or an automatic pilot.  The trajectory grows to the rhythm
of the performance; when in autopilot, the spiral also moves
gracefully in sync with the rhythm of the music.  We will describe the
mapping strategies for transforming a MIDI stream into tonal
structures in 3D space, and the architecture of the system designed to
perform the computations for music analysis and interactive rendering
in real-time.  We will give examples and present case studies of
visual mappings of music by composers from J. S. to P. D. Q. Bach.