ISSN:
1572-9613
Keywords:
Stochastic resonance
;
1/f noise
;
signal-to-noise ratio
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01053981
Permalink