This post contains additional material for the paper
Hagen Wierstorf, Alexander Raake, Matthias Geier, Sascha Spors. Perception of Focused Sources in Wave Field Synthesis. In J. Audio Soc. Eng. (2013)
We have released supplementary material on figshare.
There you will find data from the experiments plotted in the figures and a video showing the geometry of the setup together with listening examples.
All stimuli from the experiment can be listened to at the supplementary material for a paper at the 129th AES Convention.