Noise source identification based on combined wave superposition and numerical simulation

A combined wave superposition method is proposed to transform near-field acoustic holography. A theoretical model to identify sound sources is established. The method allows reconstruction of the acoustic field from an arbitrary object with relatively few measurements, and overcomes nonuniqueness and ill-posedness difficulties. Numerical simulation shows that it can identify and localize sound sources, avoid reconstruction very time, and reduce cost, thus significantly enhancing the reconstruction efficiency. It can become a powerful noise diagnostic tool in engineering.