器官管道的同步：实验观察和建模
Synchronization of organ pipes: experimental observations and modeling
摘要：
我们报告的同步性能的器官管的测量。首先，我们调查的外部声信号从扬声器上的管风琴管的声音的影响。其次，分析了两个不同节距管道的相互影响。与外部驱动或相互耦合的自持振荡器类似，人们观察到频率锁定，这可以用同步理论来解释。此外，我们测量的频率的依赖性，由两个相互失谐的管道与管道之间的距离不同的管道发出的信号。频谱显示出一个广泛的“驼峰”结构，没有发现耦合振荡器。这表明两个器官管道的复杂耦合导致非线性节拍现象。
英文摘要：
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.
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