Ｖ21解调程序中关键部分-V21 demodulation process key part

语音modem 自动应答的demo程序,可按键录音-Voice modem automatically answer the demo program can be key recording

数控脉宽脉冲信号发生器：数控脉宽脉冲信号发生器能够在脉宽控制键的控制下，按确定的步长改变输出脉冲信号占空比，即使脉冲宽度可调，同时以占空比的形式显示脉宽情况。-Digital pulse-width pulse generator: NC pulse width pulse width control signal generator able to control key, press OK steps to change the duty cycle of the output pulse

Qpsk的调制与解调 重点用蒙卡罗仿真进行误码率的计算与比较-Qpsk modulation and demodulation is the key to use monte carlo simulation of bit error rate calculation and comparison

DTMF的数据fft分析，每个键值的波形和频谱都有显示，有GUI界面-DTMF data fft analysis, waveform and spectrum of each key has revealed that there is a GUI interface