filter

代码说明：

  文件是关于巴特沃斯滤波器的设计，代码中包含了滤波器的设计过程，幅频响应、群延时、滤波器零极点等。(File is the design of the butterworth filter, the code contained in the design process of the filter, amplitude frequency response, group delay, filter zero pole, etc.)

文件列表：

filter.m,998,2013-10-21