The idea of interpolated filtering is realized with a cascade of an FIR and an interpolated FIR (IFIR) filter, and with a tap-weight overlapping method.

• 内插滤波是由一个有限脉冲响应(FIR)滤波器、一个内插有限脉冲响应滤波(IFIR)与一种将述两个滤波器系数重叠的方法串联实作而成。