I/f noise in systems showing stochastic resonance

László B. Kiss, Zoltán Gingl, Zsuzsanna Márton, János Kertész, Frank Moss, Gabor Schmera, Adi Bulsara

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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 languageEnglish
Pages (from-to)451-462
Number of pages12
JournalJournal of Statistical Physics
Volume70
Issue number1-2
DOIs
Publication statusPublished - 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

Kiss, L. B., Gingl, Z., Márton, Z., Kertész, J., Moss, F., Schmera, G., & Bulsara, A. (1993). I/f noise in systems showing stochastic resonance. Journal of Statistical Physics, 70(1-2), 451-462. https://doi.org/10.1007/BF01053981