说明：  17阶FIR滤波器 仿真出输入随机信号的 滤波结果 并将浮点型的FIR滤波器系数 量化后得到定点型系数 分析滤波后的结果 最后得到量化后浮点转定点的SNR
(17 order FIR filters out random signal input of the filter results and will of floating point type coefficients quantification FIR filters are designated type analysis results of filter coefficients quantification floating-point turn after the final regular SNR )