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The Perception of Focused Sources in Wave Field Synthesis as a Function of Listener Angle

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Wave field synthesis (WFS) is a volumetric sound reproduction technique that allows virtual sources to be positioned anywhere in space. The reproduction of the wave field of these sources means they can be accurately localized even when placed in front of the secondary sources/loudspeakers. Such ‘focused sources’ are very important in WFS as they greatly add to the realism of an auditory scene, however the perception and localization-ability changes with listener and virtual source position. In this paper we present subjective tests to determine the localization accuracy as a function of angle, defining the subjective ‘view angle’. We also show how improvements can be made through the addition of the first order image sources.

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