In the following, domains shown in Figure will be denoted as the spectral domain (Panel A), and the Fourier index domain (Panel B). In the Fourier index domain, inspection of the spectral vector from truncated SVD compared to that of the spike confirms that truncation is a good approximation to the net effect of the analysis protocol. Besides near truncation, higher index but small components are found in the Fourier index representation. In NMR spectroscopy, artifacts like these are readily repaired using known techniques. This suggests that it would be simpler and more physically meaningful if multicomponent exponential relaxation data are fitted and/or regularized in the Fourier index domain.