matlab设计半带滤波器程序：

1、用remez算法直接设计半带滤波器并；

2、先用remez算法设计单带滤波器，然后转换为半带滤波器。

有助于加深理解半带滤波器的设计。-matlab half-band filter design process: one, with remez algorithm and direct the design half-band filter　2, first remez algorithm design a single-band filters, and then converted to half-band filter. Helps deepen the understanding of half-band filter design.