A Non-central Point Sound Field Reconstruction Method by Three Loudspeakers

The development of 3D technology makes 3D audio and video technology become a research hotspot. Most of the existing 3D audio technologies reconstruct the original sound field at the center point, which makes the reconstruction effect at the center point is the best, but the reconstruction effect at the non-central point is poor. In order to solve this problem, a non-central pint 3D sound field reconstruction method is presented. The proposed method finds the location of virtual loudspeakers by constructing a virtual sphere. The signals of virtual loudspeakers are solved by traditional method. By keeping particle velocity at the non-central point constant, the signal of real loudspeaker can be obtained from the signal of virtual loudspeaker. Compared with traditional methods, the effect of the proposed method is proved by simulation experiments.