利用声全息方法识别噪声源问题中声源幅值修正的研究

Study on amplitude modification of sound sources in the application of acoustic holography to identify noise source

摘要: 针对利用声全息方法识别噪声源过程中重建声源幅值偏差的问题,分析了偏差产生的原因,井针对点声源的情况提出了一种修正算法。仿真计算和汽车的测量实验证明,采用修正算法后,重建声源幅值的相对大小与实际情况更为接近。

Abstract: This paper analysis one of the reasons for amplitude error in the reconstruction process of application of acoustic holography to identify noise source. Based on the point source, a modification method was proposed in this paper. Simulations and experiment on a vehicle prove the reconstructed amplitude is more accurate after modification.