### Abstract

Stochastic resonator systems with input and/or output 1/f noise have been studied. Disordered magnets/dielectrics serve as examples for the case of output 1/f noise with white noise (thermal excitation) at the input of the resonators. Due to the fluctuation-dissipation theorem, the output noise is related to the out-of-phase component of the periodic peak of the output spectrum. Spin glasses and ferromagnets serve as interesting examples of coupled stochastic resonators. A proper coupling can lead to an extremely large signal-to-noise ratio. As a model system, a l/f-noise-driven Schmitt trigger has been investigated experimentally to study stochastic resonance with input 1/f noise. Under proper conditions, we have found several new nonlinearity effects, such as peaks at even harmonics, holes at even harmonics, and 1/f noise also in the output spectrum.

Original language | English |
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Pages (from-to) | 451-462 |

Number of pages | 12 |

Journal | Journal of Statistical Physics |

Volume | 70 |

Issue number | 1-2 |

DOIs | |

Publication status | Published - Jan 1 1993 |

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### Keywords

- 1/f noise
- Stochastic resonance
- signal-to-noise ratio

### ASJC Scopus subject areas

- Statistical and Nonlinear Physics
- Mathematical Physics

### Cite this

*Journal of Statistical Physics*,

*70*(1-2), 451-462. https://doi.org/10.1007/BF01053981