In this paper,ways to design LiNbO_3 anisotropic acousto-optic device based on beam steering theory are studied.

A novel optimum design method of LiNbO3 anisotropic acousto-optic device based on beam steering is put forward, the accurate design parameters under different incident light angle and different number of transducers are systematically calculated.

The beam steering theory is studied to solve the problem that we can not get wider 3db Bragg bandwidth and high diffraction efficiency at the same time in the optimum design of LN anisotropic acousto-optic deflector (AOD) which is a crucial issue in the process to design an AO deflector.

By using on-line tracing technique, this paper can predicate the behavior of a job, such as its resource requirements and its approximate execution time.

We designed algorithms on the basis of the well-known ray tracing model to deal with effect of obstacles on sound propagation in enclosed sound field such as in a room.

For the simulation of sound fields in complex environment,an algorithm including multiple sound reflections,which is suitable for enclosures with arbitrary shape and sound obstacles,is developed based on the conventional ray-tracing method.

A method of step-length by defining the receiver dynamically based on ray-tracing was proposed,which solved the problem between sound effect and computational efficiency,especially for the outdoor sound field simulation in large-scale virtual environments.