摘要
利用现有的经典数字滤波器，在MATLAB中有几种方法可以实现滤波，可以使用软件自带的滤波函数，如filter和filtfilt；对于FIR滤波器，可以使用卷积函数eonv；还可以采用零相位滤波，即FRR或RRF。本文研究滤波相关函数的用法，指出每个函数处理信号的特点，对几种方法进行仿真比较，时域和频域的结果显示，使用filtfilt函数对信号进行滤波最好。
Making use of existing classical digital filter,there are several methods for fitering. For example,using accessary filtering function,filter and fihfih; using function of conv for FIR filter; conducting zero phase filtering,that is, FRR or RRF. The usages of filtering functions is researchesed, the characteristics of them is pointed out,the several methods through simulation is compared,and results of time domain and frequency domain demonstrates that function of filtfilt is the best.
出处
《电源技术应用》
2013年第10期50-53,68,共5页
Power Supply Technologles and Applications
