We present a simple nonlinear system that exhibits multiple distinct stochastic resonances. By adjusting the noise and coupling of an array of underdamped, monostable oscillators, we modify the array’s natural frequencies so that the spectral response of a typical oscillator in an array of N oscillators exhibits $N-1$ different stochastic resonances. Such families of resonances may elucidate and facilitate a variety of noise-mediated cooperative phenomena, such as noise-enhanced propagation, in a broad class of similar nonlinear systems.

• Received 31 July 2000

DOI:https://doi.org/10.1103/PhysRevE.63.051107