The mother tongue of organ pipes-Synchronization, experiments, numerical simulations, and model
Jost Leonhardt Fischer, Markus Abel · The Journal of the Acoustical Society of America · 2013
We present recent results on the synchronization (Mitnahme Effect) of organ pipes. Previous work has focused on the detailed measurement and reconstruction of the driving of an organ pipe by a loudspeaker. As a result the full Arnold tongue was measured and reconstructed and a synchronization could be found down to a fraction of 1/500 of the sound pressure level of the organ pipe. In this contribution, we give detailed results on the experimental determination of the Arnold Tongue for two pipes. The results are accompanied by detailed numerical simulations of sound generation and sound radiation with the aim to clarify the interaction of the jets and the dependence of the synchronization region on coupling strength (realized by varying distance). Furthermore, we propose a model for the coupling function.