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DY: Fachverband Dynamik und Statistische Physik

DY 14: Nonlinear Dynamics, Synchronization and Chaos II

DY 14.1: Hauptvortrag

Dienstag, 12. März 2013, 15:00–15:30, H44

When the beat goes off — •Holger Hennig — Dept. of Physics, Harvard University, Cambridge, MA, USA

Although human musical performances represent one of the most valuable achievements of mankind, the best musicians perform imperfectly. Musical rhythms are not entirely accurate and thus inevitably deviate from the ideal beat pattern. Nevertheless, computer generated perfect beat patterns are frequently devalued by listeners due to a perceived lack of human touch. Professional audio editing software therefore offers a humanizing feature which artificially generates rhythmic fluctuations. However, the built-in humanizing units are essentially random number generators producing only simple uncorrelated fluctuations. In the first part of this talk, it will be shown that long-range fluctuations as an inevitable natural companion of both simple and complex human rhythmic performances [1]. Moreover, listeners strongly prefer long-range correlated fluctuations in musical rhythms [2]. Thus, the favorable fluctuation type for humanizing interbeat intervals coincides with the one generically inherent in human musical performances. In the second part of the talk I will present new developments and ongoing work in this field. Funding through DFG grant no. HE 6312/1-2 is acknowledged.

[1] HH, R. Fleischmann, A. Fredebohm, Y. Hagmayer, A. Witt, J. Nagler, F. Theis and T. Geisel, PLoS ONE, 6, e26457 (2011)

[2] HH, R. Fleischmann, and T. Geisel, Physics Today 65, 64-65 (2012)