For the selection of vehicle trumpet based on vehicle test, there are problems of operation lag and affecting the progress of mass production of models. To address this issue, this paper proposed a trumpet near-field sound pressure simulation method based on Ray Tracing. Firstly, the hard wall panel data on the external surface of a vehicle was extracted, and Ray Tracing model solution model was established in VAOne, then the sound power of the trumpet was obtained by the inverse matrix module that was loaded into the Ray Tracing solution model to calculate the near-field sound pressure. The near-field sound pressure of trumpet simulation was compared with the test results, the result shows that the calculated near-field sound pressure value of trumpet is in good agreement with the experimental value, which can provide basis for vehicle trumpet selection in the early stage of model development.

Trumpet  /  Ray tracing method  /  Near-field sound pressure