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分析了脉搏信号的产生与传播过程．指出人体脉搏信号可看成是由心脏激励源信号与脉搏系统冲激响应的卷积，提取脉搏源特征与脉搏系统的传播特性是一个“盲信源分离”问题．因此，本文采用同态解卷技术对脉搏信号进行处理，获得了脉搏源的特征和脉搏系统的传递函数。实验结果表明：正常人脉搏激励源信号可看成周期性冲激序列，而异常脉搏激励源信号为周期性冲激序列加白噪声；人体脉搏系统相当一声低通滤波器；本文的方法对于研究人体脉搏系统的传播特性和辨识中医脉象是简便和有效的．
The process of pulse signal generation and propagation is analyzed. It is pointed out that the human pulse signal can be regarded as a convolution of the signal of the cardiac excitation source and the pulse system impulse response. It is a problem of “blind source separation” to extract the pulse source characteristics and the pulse system propagation characteristics. Therefore, we use the homomorphic unwrapping technique to process the pulse signal and obtain the characteristics of the pulse source and the transfer function of the pulse system. The experimental results show that the pulse signal of normal people can be regarded as a periodic pulse sequence, while the signal of abnormal pulse source is periodic pulse sequence plus white noise. The human pulse system is equivalent to a low pass filter. The propagation characteristics of human pulse system and the identification of TCM pulse are simple and effective.