New Calculational Method for Acoustic Reconstructing

A new calculational method for acoustic reconstructing is proposed based on ellipsoidal acoustic infinite element method. Firstly, the entire acoustic field in ellipsoidal coordinate is divided by some infinite domains, and every domain has some nodes. Then pressure functions are determined by requiring the assumed-form solution to satisfy the pressure boundary condition at the measured points. Finally, once nodal pressures are specified, acoustic pressure everywhere is completely determined due to the known pressure function. Compare to the traditional acoustic reconstructing method, the efficiency and precision of reconstruction can be significantly enhanced and satisfactory reconstruction can be obtained with relatively few measurements using the new method. To test the feasibility of this novel method efficiently, two examples are included in this paper, which show that this novel method is feasible.