【摘要】 介绍一种特殊的CIC级联数字滤波器,它能对窄带信号进行滤波。通过抽点的方法能够有效地降低采样频率,而不影响有用信号。同时介绍了运用SPTool图形化数字滤波器设计工具箱来设计凯泽窗FIR低通数字滤波器。更多还原

【Abstract】 A special digital filter called cascade integrator combination digital filter which could filter the narrow band signal is introduced.It is very effectively to reduce sampling frequency by sampling points,which does not affect the useful signal.If we design FIR Kaiser windows filter,the effect of narrow band signal filtering will be good.At the same time,the use of SPTool which is a part of Matlab software to design FIR Kaiser windows filter is introduced.更多还原