脉搏源—系统模型及其幅频特性

Pulse source-system model and its amplitute versus frequency characteristics

摘要: 脉搏包含有丰富的人体健康状况信息。近年来，用现代科学技术和方法研究人体脉搏信息引起了国内外学者的广泛重视。本文研究了人体脉搏信号产生的特点及其物理过程，并初步建立了在信息论、系统论和声学理论基础上的脉搏源-系统模型。通过实验检测和新的信号分析技术——倒谱与倒滤波技术（Cepstrumand Liftering Techniques）的处理和分析，结果表明该模型是合理的。文中首次分析了脉搏声谱图的结构与特征，得出了与脉搏传输系统的生理特征相关的若干结论。

Abstract: The pulse contains most of informations on the body health. In recenty years, scholars, both at home and abroad, have been greatly interested in studying human pulse information using modern science and techology and their methods. In this paper, we study the features and the physical generation process of the pulse signals, initially establish a pulse source-system model on the basis of information theory, system theory and acoustic theory.The model is proved to be rational by experiment testing and the new signal analysis techniques-the Cepstrum and Liftering Techniques, This paper, for the first time, analyses the structures and features of the pules acoustic-spectral diagrams, and draws several conclusions relating to the physiological featrues of the pules transmission system.