小波包是继小波分析后提出的一种新型的多尺度分析方法。文章描述了小波包分析方法的基本原理及其实现算法,并从能量分布的角度出发,阐述了在脉搏信号特征提取中,利用小波包分析方法将脉搏信号进行量化、分解,从而便于处理、判断的一种新的应用途径。实验结果表明小波包-能量谱用于提取脉搏信号特征是行之有效的。 Wavelet packet is a new multi-scale analysis method proposed after wavelet analysis. This paper describes the basic principle of wavelet packet analysis and its algorithm. From the point of view of energy distribution, it expounds that in the pulse signal feature extraction, the pulse signal is quantified and decomposed by wavelet packet analysis to make it easy to process and judge A new way of application. Experimental results show that the wavelet packet-energy spectrum is effective in extracting the characteristics of pulse signals.