这是一个PAM调制的程序与仿真，很全很实用。脉冲振幅调制（Pulse Amplitude Modulation）是脉冲载波的幅度随基带信号变化的一种调制方式。-This is a simulation program with PAM modulation, all very practical. PAM (Pulse Amplitude Modulation) is the amplitude of the pulse with the carrier of the baseband sign