Two nonlinear methods for resolution enhancement of NMR data are investigated and compared. "HOGWASH" (modeled on a procedure employed in radioastronomy) and the maximum entropy method are applied to the same experimental free induction decay. In both cases, resolution enhancement is based on direct measurement of the instrumental lineshape of a reference signal known to be a singlet. The two approaches give comparable results, although HOGWASH requires much less computer time and memory than the maximum entropy method. © 1988.
