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. Author manuscript; available in PMC: 2013 May 1.
Published in final edited form as: J Magn Reson. 2012 Mar 9;218:128–132. doi: 10.1016/j.jmr.2012.02.021

Fig. 3.

Fig. 3

Reduction of aliasing noise by diagonal suppression. (A) Selected 2-D F1/F2 planes at the F3/F4 position of I178 δ1 from the 4-D methyl–methyl NOESY experiment without (left panel) and with (right panel) diagonal suppression. A crosspeak from I333 δ1 is denoted by the cross of the dashed lines with 1-D traces shown beside the 2-D planes. Both spectra are processed with the CLEAN algorithm for artifact suppression. (B) Aliasing noise levels of individual cubes in the directly detected HC [F4] dimension of 4-D spectra generated by FFT, CLEAN and CLEAN with diagonal suppression spectra.