Effect of the horizontal panning on sense of presence in three-dimensional audio system using multiple vertical panning

We previously proposed a three-dimensional (3D) audio system using the multiple vertical panning (MVP) method to develop a 3D audio system that matches a multi-view 3D video display system (REI display). In this paper, in order to apply our proposed method to the teleconference system, we performed two audiovisual psychological experiments and evaluated the effect of the horizontal panning on the sense of presence in our proposed method. In the first experiment, although viewers cannot discriminate the differences of the sense of presence even if the horizontal panning was added to our proposed method, it is difficult to reduce the number of loudspeakers from ten. In the second experiment, viewers cannot discriminate the differences of the sense of presence even if the number of loudspeakers is reduced to four in the condition where loudspeakers are not placed at four vertex positions of the rectangle display. Thus, we found that the performance was adequately maintained if four loudspeakers were placed except four vertex positions of the rectangle display when the teleconference system based on our proposed method is constructed.