Abstract:

In this paper, in order to improve the speed of finite element simulation software such as COMSOL to simulate the three-dimensional (3D) sound field of ultrasonic transducer (UT), the fast modelling method for the sound field of UT is developed based on the angular spectrum method (ASM). In addition, the control method for the sound field of UT is proposed by combining the ASM with Gerchberg-Saxton iterative algorithm. Based on the calculated phase difference, the acoustic hologram of UT can be fabricated by using the 3D printing technology to accurately control the sound field of UT.

Key words:

Sound field, Angular spectrum, Gerchberg-Saxton, Iterative angular spectrum approach, Acoustic hologram