Stochastic resonance in an asymmetric Schmitt trigger

The stochastic response of a low-noise asymmetric Schmitt trigger is simulated numerically in the strong-drive subthreshold regime, where the amplitude of a sinusoidal input component is set large compared to the intensity of the noise component. The effect of the asymmetry on the stochastic resonance phenomenon is characterized in terms of both spectral properties and switch time distributions of the trigger output. The connection between stochastic resonance and synchronization in an asymmetric bistable system is thus assessed on a quantitative basis.