real spectrum

https://doi.org/10.1351/goldbook.08404
In nuclear magnetic resonance spectroscopy, one of two equally sized blocks of frequency data \(\pu{90\!^{\circ}}\) out of phase to each other produced by Fourier transformation of the time domain signal.
Note:
Usually only the real frequency data is displayed and in simple 1D spectra equates to the NMR signals being absorption mode (in-phase).
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 702 [Terms] [Paper]