Synchronization of organ pipes: experimental observations and modeling

Abstract

We report measurements on the synchronization properties of organ pipes. First, we investigate influence of an external acoustical signal from a loudspeaker on the sound of an organ pipe. Second, the mutual influence of two pipes with different pitch is analyzed. In analogy to the externally driven, or mutually coupled self-sustained oscillators, one observes a frequency locking, which can be explained by synchronization theory. Further, we measure the dependence of the frequency of the signals emitted by two mutually detuned pipes with varying distance between the pipes. The spectrum shows a broad ``hump'' structure, not found for coupled oscillators. This indicates a complex coupling of the two organ pipes leading to nonlinear beat phenomena.

24 pages, 10 Figures, fully revised, 4 big figures separate in jpeg format. accepted for Journal of the Acoustical Society of America

Cited by in corpus (7)

• Parametric oscillation, frequency mixing and injection locking of strongly coupled nanomechanical resonator modes
• Synchronization of Sound Sources
• Synchronization of organ pipes
• Mode-locking in advection-reaction-diffusion systems: an invariant manifold perspective
• Music in Terms of Science
• Treatise on Hearing: The Temporal Auditory Imaging Theory Inspired by Optics and Communication
• The Arnold-Tongue of Coupled Acoustic Oscillators