A new definition of the information content of N.M.R. spectra suitable for use in maximum entropy signal processing

Abstract
A new definition of spectral entropy appropriate for coherence spectroscopies such as pulsed nuclear magnetic resonance spectroscopy is developed, based on an information theoretic analogue of the Von Neumann equation for entropy in quantum mechanics. It is shown that the resulting definition meets some important but previously unrecognized requirements for spectral entropy in coherence spectroscopies, and that it is possible to employ it, in a practical way, in maximum entropy signal processing. The definition is an extension of, but consistent with, the conventional one used in incoherent optical image processing.