一个FIR数字低通滤波器的设计，在CCS设计之前先在MATLAB中进行仿真，观察一下效果。并得到参数，然后再导入CCS中，用CCS实现FIR滤波器的设计。-A low-pass FIR digital filter design, design before the CCS in the MATLAB simulation and observe the results. And are parameters, and then import the CCS, the CCS to achieve with FIR filter design.