“…Nonparametric spectrum interpolation methods make it possible to zoom in on the frequency domain but do not decrease the errors caused by long-range spectral leakage (i.e., by sidelobes of spectrum lines of neighbor components in the spectrum), which are defined by the frequency characteristic of the data window applied [47]. Similarly, the long-range spectral leakage is neglected in all noniterative interpolated DFT methods, except the DFT linear interpolation method (LIDFT) [33][34][35]45] and the multipoint weighted interpolated DFT (MWIDFT) method [36,38,43]. However, the MWIDFT method is defined only for some classes of cosine-family data windows, i.e., for the class I of Rife-Vincent windows [21], also called the maximum sidelobe decay windows [38,41,43].…”