用VB编写的程序，演示出AM调制前后和解调后的波形之间的关系-using VB program, the demo out before and after the AM modulation and demodulation of the relationship between waveforms

在VB上采用改进的阈值法检测心电高频向量，即其中的切迹和扭结，本算法在vb上显示心电波形并且提取高频分量，实现了自动检测切迹和扭结的数量。-In VB using the threshold method to improve ECG detection of high-frequency vector, that is one notch and the kink, the algorithm in vb display ECG waveforms and extraction of hig