双全息面声场分离技术的实验研究  

Experimental investigation of sound field separation technique with double holographic planes

作　　者：于飞[1] 陈剑[1] 毕传兴[1] 李卫兵[1] 陈心昭[1] 

机构地区：[1]合肥工业大学机械与汽车工程学院,合肥230009

出　　处：《声学学报》2005年第5期452-456,共5页Acta Acustica

基　　金：国家自然科学基金(50275044)教育部博士点专项基金(20020359005)资助项目

摘　　要：研制出一套多通道的声全息测量与分析系统,将其应用于对双全息面声场分离技术的验证。在对该技术进行误差分析的基础上,给出了相应的提高分离声场精度办法。利用研制的全息系统对存在背景干扰的目标声源进行双全息面测量和分析,实验结果表明:双全息面分离声场技术能够有效地抑制背景声源对全息重建结果的影响,从而可以正确地重建声场和识别噪声源。A multi-channel acoustic holographic measurement and analysis system has been developed and been applied to validate sound field separation technique with double holographic planes. Moreover, some methods to enhance separation precision have also been given, based on the error analysis of the technique. The holographic pressures on double planes are measured and analyzed by the developed holographic system when some background sources exist. The experimental results show that the separation technique proposed can suppress the influence of the background sources on holographic reconstruction effectively, and the reconstructed sound field and source identification can be obtained correctly.

关 键 词：分离技术 声全息 声场 实验 全息系统 噪声源 误差分析 背景干扰 全息重建 

分 类 号：O422[理学—声学]