基于ip核的fir滤波器设计，调用了ip核，并实例化，对初学者很有用。-Based on the ip kernel fir filter design, call the ip kernel, and instantiation, very useful for beginners.

FIR滤波器，verilog编写，可以正常使用(FIR filter, written by verilog, can be used normally, very good)