“…The only alternative method proposed so far in the literature which is based on iterations, and hence does not require any a priori assumption on the signal under analysis, is Iterative Filtering (IF) algorithm [32], its fast implementation based on FFT, named Fast Iterative Filtering (FIF) [11], and their generalizations, the Adaptive Local Iterative Filtering (ALIF) and Resampled Iterative Filtering (RIF) algorithms [4,5] for the handling of signals containing strongly nonstationarities, like chirps, whistles and multipaths. These alternative iterative methods, although published only recently, have already been used effectively in a wide variety of applied fields like, for instance, in [57,45,30,37,47,35,38,41,46,40].…”