Sampling and apodization schemes are shown in Fig. , I and J. Spectra were acquired using a minimal phase cycle for the first point, and total acquisition times were 2.6 min, 30 min and 9.5 hr for uniform, α = 1 and α = 2 NUWS schemes respectively. Both NUWS schemes worked effectively, and the increase in spectral resolution is easy to identify (Fig. ). Moreover, the impact of exponentially increasing noise on the spectrum in the sensitivity-optimised case (Fig. ) is limited, indicating that this reasonably rapid acquisition scheme may be of practical utility for a variety of common measurements.