Stochastic Resonance
Stochastic Resonance
Sometimes adding the right amount of noise can increase the signal-to-noise ratio of a signal; this is called stochastic resonance. In this Demonstration you can follow the time evolution of a particle inside a bistable potential with a low-amplitude, periodic forcing. Usually, that forcing is not enough to switch the particle from one stability basin to the other. But a small amount of random noise makes the particle oscillate between the two basins, following the periodic forcing.