EN
The empirical mode decomposition (EMD) method. The Hilbert-Huang transform (HHT) is an empirically based data-analysis method. This paper is an introduction to the basic method, which is followed by brief descriptions of the recent developments relating to the normalized Hilbert transform, a confidence limit for the Hilbert spectrum, and a statistical significance test for the intrinsic mode function (IMF). The mathematical problems associated with the HHT are then discussed. These problems include the general method of adaptive data-analysis, the identification methods of nonlinear systems, the prediction problems in non stationary processes, which is intimately related to the end effects in the empirical mode decomposition (EMD), the spline problems, which center on finding the best spline implementation for the HHT, the convergence of EMD, and two-dimensional EMD, the optimization problem or the best IMF selection and the uniqueness of the EMD decomposition.
PL
Rozkład sygnału na mody empiryczne. W niniejszym artykule opisano transformatę Hilbert-Huang, która jest empiryczną metodą analizy danych. Niniejszy artykuł stanowi wprowadzenie do metody poprzez krótki opis postępowania odnoszącego się do matematycznych zagadnień normalizacji transformaty Hilberta.