中文说明：FIR 底通和带通滤波器和IIR 底通和带通滤波器，主要为数据分析和统计，基于负熵最大的独立分量分析，时间序列数据分析中的梅林变换工具，是信号处理的基础，对于初学者具有参考意义。
English Description：
Fir at the end of pass and bandpass filters and IIR bottom pass and band-pass filter, mainly for data analysis and statistics, based on maximum entropy of independent component analysis, analysis of time series data of the Mellin transform tools, signal processing based, for beginners has reference significance.