On signal denoising by EMD in the frequency domain
Langue
en
Communication dans un congrès avec actes
Ce document a été publié dans
23rd European Signal Processing Conference (EUSIPCO), 2015-08, Nice. 2015-08p. 1-5
Résumé en anglais
In this work a new denoising scheme based on the empirical mode decomposition associated with a frequency analysis is introduced. Compared to classical approaches where the extracted modes are thresholded in time domain, ...Lire la suite >
In this work a new denoising scheme based on the empirical mode decomposition associated with a frequency analysis is introduced. Compared to classical approaches where the extracted modes are thresholded in time domain, in the proposed strategy the thresholding is done in the frequency domain. Each mode is divided into blocks of equal length where the frequency content of each one is analyzed. Relevant modes are identified using an energy and a frequency thresholds obtained by training. The denoised signal is obtained by the superposition of the thresholded modes. The effectiveness of the proposed scheme is illustrated on synthetic and real signals and the results compared to those of methodsreported recently.< Réduire
Mots clés en anglais
Denoising
Intrinsic Mode Function
Empirical Mode Decomposition
Origine
Importé de halUnités de recherche