HSVD method as described in: Barkhuijsen H, de Beer R, van Ormondt D. Improved algorithm for noniterative and timedomain model fitting to exponentially damped magnetic resonance signals. J Magn Reson 1987;73:553-557.
hsvd(mrs_data, comps = 40, irlba = TRUE, max_damp = 10)
basis matrix and signal table.