Snapshots of signals obtained from different points along the NOTAP signal path used to generate Figure 5g (ZOH, N = 500). (a) Transmitted acoustic pressure with non-uniformly spaced samples, p_x (b) The ZOH interpolation of, p_o (c) Decimation of (b) to f_s,r = 4 kHz and applying time-varying anti-imaging filter, p_r, (d) Upsampled version of (c) to a listening sampling frequency of 44.1 kHz.