音像プラネタリウム : 超音波スピーカを利用した3次元音場再生方式(<特集>教育・訓練・協調)

概要

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A new three-dimensional (3D) sound field reproduction system with parametric loudspeakers is introduced to present 3D sound field to a listener. The headphone-based systems have been utilized to achieve the 3D sound field for Mixed Reality (MR). The listener however has a sensation of pressure by equipping headphones, and the performance by the conventional system has been not enough to achieve the MR system. The proposed system utilizes parametric loudspeakers instead of headphones to solve these problems. In this paper, the principle of the proposed system named Acoustic Planetarium is explained. Objective and subjective evaluation were carried out to verify the effectiveness of the proposed system. The results suggested that the proposed method is superior to the conventional systems.
2011-12-31