Research and application of outdoor sound field in virtual environment for mobile receiver
接收点移动的室外虚拟声场模拟研究与应用

Ray-tracing is one of the most widely used ways of sound field simulation, but it usually depends on the specific location of the receiving point; therefore, it cannot be used in virtual environment with a mobile receiver directly. 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. The improved algorithm was implemented in VS 2005 and Matlab, and it can achieve satisfactory sound effect and computational efficiency.