| US 7,492,915 B2 | ||
| Dynamic sound source and listener position based audio rendering | ||
| Steven R. Jahnke, Tokyo (Japan) | ||
| Assigned to Texas Instruments Incorporated, Dallas, Tex. (US) | ||
| Filed on Feb. 13, 2004, as Appl. No. 10/779,047. | ||
| Prior Publication US 2005/0179701 A1, Aug. 18, 2005 | ||
| Int. Cl. H04B 1/00 (2006.01) | ||
| U.S. Cl. 381—119 [381/306; 345/473] | 5 Claims |
| 1. A method of sound processing to be used in systems utilizing computer generated graphics objects comprising the steps of:
defining plural sound sources, each sound source attached to a computer generated graphics object;
determining relative position between each computer generated graphics object with an attached sound source and a listener
position including
defining the location of each computer generated graphics object with an attached sound source in (X,Y) coordinates;
normalizing the defined locations (X,Y) coordinates to the listener position as coordinate origin;
converting the normalized defined locations from (X,Y)
coordinates to polar coordinates;
mixing the sound sources into channels of multi-channel sound dependent upon relative position;
detecting changes in the relative position between each computer generated graphics object with an attached sound source and
the listener position; and
re-mixing the sound source into channels of multi-channel sound dependent upon the detected changes in relative position.
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