Physics – Physics and Society
Scientific paper
2009-03-20
Physics
Physics and Society
4 pages with 2 figures
Scientific paper
The concept of complexity as considered in terms of its algorithmic definition proposed by G.J. Chaitin and A.N. Kolmogorov is revisited for the dynamical complexity of music. When music pieces are cast in the form of time series of pitch variations, concepts of dynamical systems theory can be used to define new quantities such as the {\em dimensionality} as a measure of the {\em global temporal dynamics} of a music piece, and the Shanon {\em entropy} as an evaluation of its {\em local dynamics}. When these quantities are computed explicitly for sequences sampled in the music literature from the 18th to the 20th century, no indication is found of a systematic increase in complexity paralleling historically the evolution of classical western music, but the analysis suggests that the fractional nature of art might have an intrinsic value of more general significance.
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