Spectrograms for various auralization methods using a sinusoidal source (a) ‘Ground truth’ using equation (14) with f_s,r = 16 kHz, (b) aliased with continuous time source with f_s,r = 4 kHz, (c) linear interpolation of a discrete time source with f_s,r = 44.1 kHz, (d) linear interpolation of discrete time source and aliasing with f_s,r = 4 kHz, (e) Decimated signal from (a) at f_s,r = 4 kHz, (f) NOTAP using ZOH interpolation, an oversampling ratio of 50, and f_s,r = 4 kHz, (g) NOTAP using ZOH interpolation, an oversampling ratio of 500, and f_s,r = 4 kHz, (h) NOTAP using linear interpolation, an oversampling ratio of 50, and f_s,r = 4 kHz.