Index of /~echew/papers/ISMIR8

 Name                    Last modified      Size  Description
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 ISMIR2007_p189_mardi..> 11-Jul-2009 05:33  435K  
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In this directory are the PDF files for the papers titled

"Visualizing Music: Tonal Progressions and Distributions"
by Arpi Mardirossian and Elaine Chew

and

"A Dynamic Programming Approach to the Extraction of Phrase Boundaries
from Tempo Variations in Expressive Performances"
by Ching-Hua Chuan and Elaine Chew

The results were presented at the 
Eighth International Conference on Music Information Retrieval
Vienna, Austria.  September 23-27, 2007.

The papers are published in the
Proceedings of the 8th ISMIR Conference

The conference website is at 
http://ismir2007.ismir.net

THE COMPLETE PAPER, text with figures, can be viewed as a PDF document.
Click on ISMIR2007_p189_mardirossian.pdf if you wish to view the first paper, and
click on ISMIR2007_p305_chuan.pdf if you wish to view the second paper.

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"Visualizing Music: Tonal Progressions and Distributions"
by Arpi Mardirossian and Elaine Chew

ABSTRACT: This paper presents a music visualization tool that shows
the tonal progression in, and tonal distribution of, a piece of music
on Lerdahl's two-dimensional tonal pitch space.  The method segments a
piece into uniform time slices, and determines the most likely key in
each slice. It then generates the visualization by dynamically showing
the sequence of keys as translucent, growing discs on the
twodimensional plane. The frequency of a key is indicated by the size
of its colored disc. Each color and position corresponds to a key, and
related keys are shown in proximity with related colors. The visual
result effectively presents the changing distribution of the keys
employed.  The proposed visualization is an improvement over more
basic charting methods, such as histograms, and it maintains standards
of information design in the form of added dimensionality, color, and
animation. We show that the visualization is invariant under music
transformations that preserve the piece's identity. We conclude by
illustrating how this method may be used to visually distinguish
between tonal progression and distribution patterns in western
classical versus Armenian folk music.

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"A Dynamic Programming Approach to the Extraction of Phrase Boundaries
from Tempo Variations in Expressive Performances"
by Ching-Hua Chuan and Elaine Chew

ABSTRACT: We present an approach to phrase segmentation that starts
with an expressive music performance. Previous research has shown that
phrases are delineated by tempo speedups and slowdowns. We propose a
dynamic programming algorithm for extracting phrases from tempo
information.  We test two hypotheses formodeling phrase tempo shapes:
a quadratic model, and a spline curve. We test the two models on
phrase extraction from performances of entire classical romantic
pieces namely, Chopin's Preludes Nos. 1 and 7. The algorithms
determined 21 of the 26 phrase boundaries correctly from Arthur
Rubinstein's and Evgeny Kissin's performances. We observe that not all
tempo slowdowns signify a boundary (some are agogic accents), and
multiple levels of phrasing strategies should be considered for
detailed interpretation analyses.