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_vec(y, fs, comps = 40, irlba = TRUE, max_damp = 0)
basis matrix and signal table.