Envelope Extraction of Heart Sounds Based on Hilbert-Huang Transform
- VernacularTitle:基于希尔伯特-黄变换的心音包络提取
- Author:
Xiaofei XU
;
Yong LIN
;
Binbin YAN
- Publication Type:Journal Article
- Keywords:
heart sound;
empirical mode decomposition;
intrinsic mode function;
Hilbert-Huang transform;
envelope extraction
- From:Space Medicine & Medical Engineering
2006;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective Based on the analysis of time domain of heart sound with envelop to extract the envelope character of heart sounds.Methods The envelope extraction of heart sounds based on Hilbert-Huang Transform was given.Firstly,the original heart sounds signal was preprocessed by Huang Transform.Secondly,the envelope of heart sounds was got with Hilbert Transform.Results The first heart sound and the second heart sound were extracted,and all kinds of characters in time domain of heart sound were acquired more accurately.Conclusion The envelope of heart sound is extracted correctly.The foundation for further analysis of heart sounds is established.
