Method The time-domain characteristic point and change of signal saltation edge of pulse signal were examined, according to the relationship between wavelet zero-crossing and signal saltation edge.

• 方法根据小波变换过零点和信号突变点之间的关系,分别运用小波变换过零点表征检测脉象时域特征点和各特征点脉搏信号变化的快慢。