单全息面的直接声场分离方法
发布时间：2019-02-28 09:17
【摘要】：为了简化分离全息面两侧相干声源的过程,提出仅依据单全息面上的数据直接进行声场分离的方法。该方法通过将等效源配置在球面上,并根据等效源法近场声全息的重构原理,建立全息面上有误差的测量值和计算值之间的数据关系,理论推导出单面声场分离方法。仿真分析干扰声源为脉动球源和受迫振动的简支薄钢板的分离结果,并对双扬声器的声场分离进行了实验验证。结果表明:该方法对两种干扰源都具有较好的分离精度,且有较高的可容忍误差。
[Abstract]:In order to simplify the process of separating coherent sound sources on both sides of the hologram plane, a method is proposed to separate the sound field directly only according to the data on the single hologram plane. According to the principle of reconstruction of near-field acoustic holography using equivalent source method, the data relationship between the measured and calculated values on the hologram plane is established, and the separation method of one-sided acoustic field is deduced theoretically by placing the equivalent source on the sphere and according to the reconstruction principle of the near-field acoustic holography using the equivalent source method. The separation results of simply supported thin steel plates with pulsating spherical source and forced vibration are simulated and analyzed, and the acoustic field separation of double loudspeakers is verified by experiments. The results show that the proposed method has good separation accuracy and high tolerable error for both interference sources.
【作者单位】： 重庆大学机械传动国家重点实验室;重庆大学汽车工程学院;
【基金】：国家自然科学基金项目(51275540)资助
【分类号】：O422.2
本文编号：2431691
[Abstract]:In order to simplify the process of separating coherent sound sources on both sides of the hologram plane, a method is proposed to separate the sound field directly only according to the data on the single hologram plane. According to the principle of reconstruction of near-field acoustic holography using equivalent source method, the data relationship between the measured and calculated values on the hologram plane is established, and the separation method of one-sided acoustic field is deduced theoretically by placing the equivalent source on the sphere and according to the reconstruction principle of the near-field acoustic holography using the equivalent source method. The separation results of simply supported thin steel plates with pulsating spherical source and forced vibration are simulated and analyzed, and the acoustic field separation of double loudspeakers is verified by experiments. The results show that the proposed method has good separation accuracy and high tolerable error for both interference sources.
【作者单位】： 重庆大学机械传动国家重点实验室;重庆大学汽车工程学院;
【基金】：国家自然科学基金项目(51275540)资助
【分类号】：O422.2
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