多功能信号分析器.基于matla的GUI界面.实现对信号的波形频谱显示。且包括对加窗以后数据的峰值相应坐标的捕获. -Multifunctional signal analyzer. Based MATLA the GUI interface. Displayed on the waveform of the signal spectrum. And including the capture of the windowed data after the peak corresponding