Figure 1
From: Comparison of auditory spatial bisection and minimum audible angle in front, lateral, and back space

Schematic of the layout for the bisection task (a) and MAA task (b), with examples of possible reference (shown by grey loudspeakers) and probe (shown by black loudspeakers) locations. For both tasks, the subject was oriented so that sounds were presented from in front, laterally, or from the back. For illustrative purposes, all angles have been expanded relative to their true values.