Perception of Focused Sources in Wave Field Synthesis
Hagen Wierstorf, Aes Student Member, Alexander Raake, Matthias Geier, Sascha Spors · Journal of the Audio Engineering Society · 2013
Wave Field Synthesis (WFS) allows virtual sound sources to be synthesized that are located between the loudspeaker array and the listener. Such sources are known as focused sources. Due to practical limitations related to real loudspeaker arrays, such as spatial sampling and truncation, there are different artifacts in the synthesized sound field of focused sources. In this paper we present a listening test to identify the perceptual dimensions that are associated with these artifacts. Two main dimensions were found, one describing the amount of perceptual artifacts and the other one describing the localization of the focused source. The influence of the array length on these two dimensions is evaluated further in a second listening test. A binaural model is used to model the perceived location of focused sources found in the second test and to analyze dominant localization cues.