公开(公告)号：US06751322B1

公开(公告)日：2004-06-15

申请号：US09165312

申请日：1998-10-02

申请人： Ingrid B. Carlbom ,  Gary W. Elko ,  Thomas A. Funkhouser ,  Sarma V. Pingali ,  Man Mohan Sondhi ,  James Edward West

发明人： Ingrid B. Carlbom ,  Gary W. Elko ,  Thomas A. Funkhouser ,  Sarma V. Pingali ,  Man Mohan Sondhi ,  James Edward West

IPC分类号： H03G300

CPC分类号： H04S3/00

摘要： A system and method for acoustic modeling partitions an input 3D spatial model into convex cells, and constructs a cell adjacency data structure representing the neighbor relationships between adjacent cells. For each sound source located in the spatial environment, convex pyramidal beams are traced through the input spatial model via recursive depth-first traversal of the cell-adjacency graph. During beam tracing, a beam tree data structure is constructed to encode propagation paths, which may include specular reflection, transmission, diffuse reflection, and diffraction events, from the source location to regions of the input spatial model. The beam tree data structure is then accessed for real-time computation and auralization of propagation paths to an arbitrary receiver location.

摘要翻译： 用于声学建模的系统和方法将输入3D空间模型分割成凸小区，并且构建表示相邻小区之间的邻居关系的小区邻接数据结构。 对于位于空间环境中的每个声源，凸金字塔束通过输入空间模型通过细胞邻接图的递归深度优先遍历来跟踪。 在光束跟踪期间，构造波束树数据结构以对从输入空间模型的源位置到区域的传播路径进行编码，其可以包括镜面反射，透射，漫反射和衍射事件。 然后访问光束树数据结构，用于实时计算和传播路径到任意接收器位置的声音。