Design of Parametric Array System And Calculation & Optimization of Acoustic Response

A parametric array system framework is designed based on the theoretical principle of nonlinear acoustic.The sound field character of nonlinear acoustic response in air has been investigated.A mathematics model is presented to overcome the limitation of the calculation of Berktay that can only provide an acoustic field solution on orthoaxis.The secondary acoustic wave responses of on-axis and off-axis both were considered to describe the parametric array acoustic filed.According to different input signals,the signal processing subsystem can select different control schemes to optimize acoustic distortion and power consumption.The whole parametric system is established by simulink toolbox.The results of numerical simulation are analyzed and compared with experimental results,which shows that the parametric array system can express distribution of the secondary acoustic field more accurately and improve power consumption.