中文说明：
产生随机共振现象的输入输出信噪比曲线，运用龙格库塔算法求解朗之万方程，进而实现随机共振系统。
English Description：
For the input-output signal-to-noise ratio curve that produces stochastic resonance phenomenon, Runge Kutta algorithm is used to solve Langevin equation, and then the stochastic resonance system is realized