基于3D-MUSIC和波叠加的声场重建方法

Sound Field Reconstruction Method Based on 3D-MUSIC and Wave Superposition

为解决波叠加法的等效源配置不确定性问题,提出了一种基于3D-MUSIC和波叠加的声场重建方法。该方法利用3D-MUSIC算法获取声源的空间位置,然后在该位置附近布置等效源,利用波叠加法重建声场。该方法在一定程度上解决了等效源配置的不确定性问题,为任意型声源的定位及声场重建提供了替代性解决方案。最后,通过数值仿真与实验研究验证了该方法的可行性和准确性。该方法在1300Hz~3000Hz频率范围内,可有效定位声源三维位置,准确重建声场且重建误差低于10%。

In order to solve the uncertainty problem of the equivalent source configuration of the wave superposition method,a sound field reconstruction method based on 3D-MUSIC and wave superposition is proposed. Firstly,this method uses the 3D-MUSIC algorithm to obtain the spatial position of the sound source,then arranges the equivalent source according to this position,and finally the wave superposition method is utilized to reconstruct the sound field. This method the uncertainty problem of equivalent source configuration is solved by the proposed method,which provides an alternative solution for the localization and sound field reconstruction of arbitrary sound sources. Additionally,the effectiveness and feasibility of the method is demonstrated by the numerical simulation and experimental verification. Based on this method,the three-dimensional position of the sound source can be effectively located with the frequency range of 1300 Hz to 3000 Hz,and the sound field can be accurately reconstructed with the reconstruction error no more than 10%.