Index of /~echew/papers/ICS2003

      Name                    Last modified       Size  Description


[DIR] Parent Directory        13-Sep-2009 18:19      -  
[   ] ecyc-procchap.pdf       30-Jul-2002 04:59   431k  
[TXT] reference.txt           10-Oct-2003 16:15     1k  

In this directory is the PDF file for a paper titled

"Mapping MIDI to the Spiral Array: Disambiguating Pitch Spellings"
by Elaine Chew (echew@usc.edu) and Yun-Ching Chen (yunchinc@usc.edu)

The paper was presented at the 
Informs Computing Society 2003 Conference on
Optimization and Computation in the Network Era
Chandler, Arizona.  January 8-10, 2003.

The paper was published in 
Computational Modeling and Problem Solving in the Networked World
Proceedings of the 8th INFORMS Computer Society Conference
Eds H. K. Bhargava and Nong Ye.  pp 259-275.  Kluwer.
Click on reference.txt for the BibTeX reference.

The MuSA project website is described at
http://cappriccio.usc.edu/MuSA

The conference website is at 
http://www.ebrc.psu.edu/ics2003

THE COMPLETE PAPER, text with figures, can be viewed as a PDF document.
Click on ecyc-procchap.pdf if you wish to view the paper in PDF format.

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"Mapping MIDI to the Spiral Array: Disambiguating Pitch Spellings"
by Elaine Chew (echew@usc.edu) and Yun-Ching Chen (yunchinc@usc.edu)

ABSTRACT: The problem of assigning appropriate pitch spellings is one
of the most fundamental problems in the analysis of digital music
information.  We present an algorithm for finding the optimal spelling
based on the Spiral Array model, a geometric model embodying the
relations in tonality.  The algorithm does not require the key context
to be determined.  Instead, it uses a center of effect (c.e.), an
interior point in the Spiral Array model, as a proxy for the key
context.  Plausible pitch spellings are measured against this c.e.,
and the optimal pitch is selected using the nearest neighbor criteria.
Two examples are given from Beethoven's Sonata Op. 109 to illustrate
the algorithm.  The algorithm is implemented and the results used in
MuSA $-$ a music visualization software using the Spiral Array.  We
present and analyze computational results from test runs on MIDI files
of two movements from Beethoven's Piano Sonatas Op.79 and Op.109.