Patent ID: 6973192
Filing Date: 2005-12-06
Classification: H04S

Abstract:
1. A method of acoustically rendering a virtual environment including: receiving a set of polygons generated for a graphical display; selecting a first subset of the polygons for an acoustic display; selecting a second subset of the polygons for the acoustic display; determining acoustic reflections from a sound source that bounce off of the polygons in the first subset of polygons to a listener position in the virtual environment, wherein determining acoustic reflections from a sound source that bounce off of the first subset of polygons to a listener position in the virtual environment is calculated less frequently than determining whether a polygon in the second subset of polygons causes an occlusion of the sound source at the listener position; determining whether a polygon in the second subset of polygons causes an occlusion of the sound source at the listener position; and generating a play list of sounds based on the reflections and the occlusions.