Auditory depth control: a new approach utilizing a plane wave loudspeaker radiating from above a listener

摘要

One of the distinct features of a 3D image is that the depth perceived by viewer is controlled so that objects appear to project toward the viewers. However, it has been hard to move auditory imagery near to listeners using conventional loudspeakers and panning algorithms. In this study, we proposed a new system for controlling auditory depth, which incorporates two loudspeakers: one that radiates sound from the front of a listener and another that radiates plane waves from above a listener. With additional equalization that removes spectral cues corresponding to elevation, the proposed system generates an auditory image "near a listener" and controls the depth perceived by the listener, thereby enhancing the listener ' s perception of 3D sound.