摘要
讨论了几种非线性非平稳信号的时频分析方法,重点介绍了经验模态分解方法及Hilbert-Huang变换,并对Hilbert-Huang变换的时频分析特性进行了计算机模拟仿真分析.给出了Hilbert-Huang变换在心音信号分析中的应用实例,实验结果验证了该方法的有效性和优越性,具有一定的工程应用价值.
Focusing on the empirical mode decomposition method and Hilbert-Huang transformation, several time-frequency analytic methods to analyze non-linear and non-stationary signals was discussed. The timefrequency analytic characteristics of the Hilbert-Huang transformation was analyzed by the computer simulation. Presented an example of analyzing phonocardiogram by the Hilbert-Huang transformation, the experimental results indicated the advance, efficient and value of this method in the engineering application.
出处
《高师理科学刊》
2012年第4期40-42,53,共4页
Journal of Science of Teachers＇College and University
