Title :
Effect of initial phase in two tone separation using empirical mode decomposition
Author :
Gao, Jiexin ; Hatzinakos, Dimitrios
Author_Institution :
Edward S. Rogers Sr. Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON, Canada
Abstract :
Empirical mode decomposition (EMD) is an adaptive method for nonlinear and nonstationary signal processing. Although the algorithm is easy to implement and widely deployed, its theoretical background and limitations remain uncertain. This paper investigates the performance of EMD in two tone separation problem, especially for the transition region between perfect separation and failure, with emphasis on the effect of the initial phase. Relationships between amplitude ratio, frequency ratio, initial phase and performance are derived.
Keywords :
adaptive signal processing; failure analysis; EMD performance; adaptive method; amplitude ratio; empirical mode decomposition; frequency ratio; initial phase effect; nonlinear signal processing; nonstationary signal processing; transition region; two tone separation; Educational institutions; Equations; Frequency measurement; Mathematical model; Measurement uncertainty; Signal processing; Empirical Mode Decomposition; Tone Separation;
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2012 IEEE International Conference on
Conference_Location :
Kyoto
Print_ISBN :
978-1-4673-0045-2
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2012.6288761