Eur. Phys. J. B 50, 339-344 (2006)
https://doi.org/10.1140/epjb/e2006-00135-8

Marked signal improvement by stochastic resonance for aperiodic signals in the double-well system

Department of Experimental Physics, University of Szeged, Dóm tér 9, Szeged, 6720, Hungary

Corresponding author: ^a phil@titan.physx.u-szeged.hu

Received: 2 November 2005
Revised: 14 December 2005
Published online: 12 April 2006

Abstract

On the basis of our mixed-signal simulations we report significant stochastic resonance induced input-output signal improvement in the double-well system for aperiodic input types. We used a pulse train with randomised pulse locations and a band-limited noise with low cut-off frequency as input signals, and applied a cross-spectral measure to quantify their noise content. We also supplemented our examinations with simulations in the Schmitt trigger to show that the signal improvement we obtained is not a result of a potential filtering effect due to the limited response time of the double-well dynamics.