心气虚证与正常人脉象信息的时频分析区别

The Difference Between Heart-Qi Deficiency and Normal Human Pulse Information in the Time-frequency Domain Analysis

目的研究心气虚证与正常人脉象信息在时频分析上的区别。方法基于脉象的基本特征,将小波包分析理论应用于心气虚证的脉象信号的分析和处理,利用小波包分析所具有良好的时-频同时局部化的能力和对非平稳信号的检测能力对脉象信号进行了分析和时频特征值的提取,并提取了脉象信号的小波包变换在不同尺度上的能量这一新的表征脉象的特征参数。结果向量的统计表明心气虚证的脉象信息在小波包分解上特征性比较明显。结论时频分析有望作为新的诊断方法。

Object：To Discuss the difference between Heart-Qi deficiency and normal Human Pulse information in the time-frequency domain analysis.Methods：Based on the characteristics of Human Pulse,Wavelet packet Transform is originally used to process and analysis it.Wavelet packet analysis has a good qualities both in time domain and frequency domain and is an ideal tool in analyzing unsteady signal,so it is used to detect the singularity of Human Pulse and extract the features of Human Pulse both in time-frequency domain.Human Pulse is characterized by a new feature which is the energy of its wavelet packet transform in different scales.Results：The Human Pulse in Heart-qi deficiency is obviously in the wavelet packet analysis from the statistics of Vectors.Conclusion Time-frequency analysis is expected as a new diagnostic method.