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Experimental Study on Synchronization of Van der Pol Oscillator Circuit by Noise Sounds

Taiki HAYASHI, Kazuyoshi ISHIMURA, Isao T. TOKUDA

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Summary :

Towards realization of a noise-induced synchronization in a natural environment, an experimental study is carried out using the Van der Pol oscillator circuit. We focus on acoustic sounds as a potential source of noise that may exist in nature. To mimic such a natural environment, white noise sounds were generated from a loud speaker and recorded into microphone signals. These signals were then injected into the oscillator circuits. We show that the oscillator circuits spontaneously give rise to synchronized dynamics when the microphone signals are highly correlated with each other. As the correlation among the input microphone signals is decreased, the level of synchrony is lowered monotonously, implying that the input correlation is the key determinant for the noise-induced synchronization. Our study provides an experimental basis for synchronizing clocks in distributed sensor networks as well as other engineering devices in natural environment.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E105-A No.11 pp.1486-1492
Publication Date
2022/11/01
Publicized
2022/05/16
Online ISSN
1745-1337
DOI
10.1587/transfun.2022EAP1028
Type of Manuscript
PAPER
Category
Nonlinear Problems

Authors

Taiki HAYASHI
  Ritsumeikan University
Kazuyoshi ISHIMURA
  Ritsumeikan University
Isao T. TOKUDA
  Ritsumeikan University

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