窗口法设计fir低通滤波器matlab程序-Low-pass filter design fir

matlab 编写的简单数字下变频仿真程序，含NCO模块、混频、低通滤波、抽取。模块大多采用matlab自带函数实现- program for DDC simulink base on Matlab

此程序是CCS5.5的FIR数字滤波C码，为低通滤波函数，程序内部有注释，可以结合matlab更改滤波函数。-This program is CCS5.5 FIR digital filter C code, a low-pass filtering function within the program notes, can be combined to change the filter matlab function.

matlab实现一阶低通滤波器并离散化。有图，可以验证滤波效果。-matlab first order filter discrete