基于等效源法的近场声全息噪声源识别系统研究与开发

Near-field acoustical holography (NAH) is an effective tool for noise source localization and acoustic field visualization. On the basis of the equivalent source method-based NAH, a LabVIEW platform-based noise source identification system is developed. The system has such function as data acquisition, data processing and visualization of acoustic field. And, it is easy to use, fast in computation and adapted to arbitrarily-shaped sources. The principle of the system including the theory, the hardware and the software is firstly introduced .And then, an experiment on an electric motor is carried out to test the function and performance of the system.