Journal of Guangxi Normal University(Natural Science Edition) ›› 2012, Vol. 30 ›› Issue (3): 94-99.

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Property of Single EMD and the Mechanism of IMF

HU Wei-ping, DONG Zhen-hua   

  1. College of Electronic Engineering,Guangxi Normal University,Guilin Guangxi 541004,China
  • Received:2012-07-20 Online:2012-09-20 Published:2018-12-04

Abstract: This paper investigates the frequency property of single EMD andthe mechanism of IMF by using a compound signal composed of two pure tones.Theresults show that,in the sifting procedure of EMD,the higher frequency component extracts the energy of lower one to produce IMF and determines its band and location in frequency domain,and the extraction can not be relayed by the components in the middle area.In the end the filter banksof EMD were conpared with wavelet by giving the demonstration of the single EMD's frequency domain property.

Key words: EMD, IMF, filter banks in frequency domain

CLC Number: 

  • TN911.7
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