用于通信仿真编程当中，可用此程序为通信信号加入高斯白噪声-For communication simulation programming, use this program for communication signal to join the Gauss white noise

对信号加入噪声，绘制频谱图，设计滤波器，对信号进行频谱分析，滤波-The noise signal is added, rendering the spectrum diagram, the design of filters for spectral analysis of the signal, filtering

利用MATLAB gui 编的短波通信系统，录制一段语音信号，分别通过AM SSB DSB 等调制信号，加入噪声，然后解调出来，可比较各种调制解调方式的优劣。-Use MATLAB gui compiled shortwave communication system, record a voice signal, respectively, by AM SSB DSB modulated signal, etc., added noise, then demodulated, you can