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DY: Fachverband Dynamik und Statistische Physik

DY 32: Synchronization

DY 32.5: Vortrag

Freitag, 30. März 2007, 11:15–11:30, H3

Synchronization in acoustical systems by the example of organ pipes — •Markus Abel¹, Karsten Ahnert², and Steffen Bergweiler¹ — ¹UP Transfer GmbH an der Universität Potsdam, Am Neuen Palais 10, 14469 Potsdam — ²Institut für Physik, Universität Potsdam, Am Neuen Palais 10, 14469 Potsdam

From measurements on organ pipes, it is known since a long time, that phase-locking can lead to a mutual influence of organ pipes by each other. The same holds for external driving of pipes by acoustical sources of well-defined frequencies. We explain the theoretical background from nonlinear vibrational theory and apply it to measurements of the synchronization between an organ pipe and a loudspeaker. In the experiment we observe an Arnold tongue over a range of 60 dB, i.e. about 3 decades. With nonlinear, nonparametric embedding we are able to determine effective equations for the system in terms of a driven nonlinear oscillator.