Localization in Spatial Audio—From Wave Field Synthesis to 22.2
Spatial audio reproduction used to concentrate on systems with a low number of loudspeakers arranged in the horizontal plane. Wave Field Synthesis (WFS) and NHK's 22.2 two systems promise better localisation and envelopment. Comparisons of 22.2 with 5.1 concerning spatial attributes on one hand, and evaluation of spatial properties of WFS on the other hand have been published in the past, but different methods have been used. In this paper a listening test method is presented which is tailored on the evaluation of localisation of 3D audio formats at different listener positions. Two experiments have been conducted: In the first experiment the localisation precision of 22.2 reproduction was evaluated. In a second experiment the localisation precision in the horizontal plane as a function of spatial sampling was studied.
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