By translating the design of the filter into the optimization of its parameters, PSO can be used to explore the whole parameters space effectively in parallel in order to achieve the optimum solution.

• 将滤波器的设计问题转化为滤波器参数的优化问题，然后利用粒子群优化算法对整个参数空间进行高效搜索以获得最优解；