MAXIMUM-ENTROPY RECONSTRUCTION OF COMPLEX (PHASE-SENSITIVE) SPECTRA

There is no general agreement on the definition of the entropy of a complex spectrum. We consider a number of possible definitions for use in maximum entropy reconstruction, comparing their analytical properties and the quality of spectrum reconstructions computed for synthetic and experimental NMR data. On the basis of this comparison, we conclude that the entropy of the power spectrum is not well suited for spectrum reconstruction in NMR; conversely, there is one definition which appears to be better suited in every respect than the others considered. © 1990.