The effects of temporal and spatial attributes of pulse sequences on spatial distribution perception accuracy were investigated in a listening experiment. Broadband pulses, either 3-ms clicks or noise bursts, were presented in a sequence from three to seven directions covering the frontal horizontal plane from -45 degrees to 45 degrees, with the boundaries always emitting sound. The inter-stimulus-interval (ISI) of the sequence was altered to obtain the detection threshold for perceiving the spatial distribution correctly. The results revealed that the spatial distribution of the bursts was perceived correctly with smaller ISIs than that of the clicks, and that cases with two to four directions between the boundaries received the highest ISI values. The obtained detection thresholds suggest that the human spatiotemporal resolution is surprisingly low.
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