Figure 3: Exit angles in response to a whine presented with two competing chucks.
From: Relative comparisons of call parameters enable auditory grouping in frogs

Each chuck has a natural timing but at varying whine-chuck separations. (aâd) Closest chuck has 0° whine-chuck separation. (fâh) Closest chuck is 45° from the whine, with both chucks on same side of whine. (iâk) Closest chuck is 45° from the whine, but on opposite sides. (e, i) Controls with chucks at 45° on each side of the whine were run for each experiment. C, chuck; W, whine.