这是包含我自己设计的一个低通滤波器和语音信号的处理，程序已经通过编译和仿真。-This is my own design with a low-pass filter and speech signal processing, compilation and simulation programs have been adopted.

Demodulating the signal. DeAmpMod = (1/2).*(ademod(AmpMod,Fc,Fs, amdsb-sc ,num,den)) (ALTERNATIVE APPROACH) DeAmpMod = AmpMod.*Cs Designing butterworth low pass filter. [num,den] = butter(2,.8) FilteredOutput = filter(num,den