此程序应用了流水线技术来实现IIR滤波器，它是由一个非递归部分和一个具有延迟为2和系数为9/16的递归部分构成。-The procedure applied to the pipeline techniques to achieve an IIR filter, which consists of a non-recursive portion and having a delay of 2 and a coefficient of the recursive part 9/16 constit