一种非中心点处声场重建方法

A METHOD FOR SOUND FIELD RECONSTRUCTION AT NON-CENTRAL POINT

针对已有技术使用若干扬声器合成一个虚拟声源的方法在中心听音点处的三位声场重建效果较好,而非中心听音点处的声场重建效果较差的问题,提出一种非中心点处三维声场重建方法。以非中心点为中心构建虚拟扬声器阵列,并求解虚拟扬声器的信号;由虚拟扬声器的信号求得实际扬声器的信号。模拟实验将该方法应用于NHK22.2系统的重建,结果表明,该方法在非中心听音点处的三维声场重建效果优于传统方法。

The existing method of synthesizing a virtual sound source with several loudspeakers has better 3D sound field reconstruction effect at the central listening point,but the 3D sound field reconstruction effect at the non-central listening point is poor.Aiming at this problem,this paper proposes a non-central listening point 3D sound field reconstruction method.The virtual sphere was constructed with the non-center point as the center of the sphere,and the signals of the virtual loudspeakers were solved.The signals of real loudspeakers were obtained by the signals of virtual loudspeakers.The simulation experiment applied this method to the reconstruction of NHK22.2 system,and the results show that the proposed method is superior to traditional methods in 3D sound field reconstruction effect at non-central listening point.