FIR转成Lattice结构[全零点系统转lattice） 根据要求的中心频点，及其相邻“梳齿”的峰值频率可选择。优点：结构简单，处理速度快。 -FIR into Lattice structure [the whole system turn against lattice] in accordance with the requirements of the center frequency, and its adjacent " comb" of the peak