The paper Non-smooth secondary source distributions in Wave Field Synthesis by Sascha Spors, Frank Schultz and Hagen Wierstorf disusses artifacts arising from edges in rectangular loudspeaker arrays. The Python scripts used to compute the figures in the paper can be downloaded on github. The presentation (German) given at the German Annual Conference on Acoustics (DAGA) 2015 can be viewed on speakerdeck.
