Electrical audio signal processing systems and devices – Sound effects – Reverberators
Reexamination Certificate
2004-10-12
2009-10-20
Faulk, Devona E. (Department: 2614)
Electrical audio signal processing systems and devices
Sound effects
Reverberators
C381S061000, C381S062000, C345S418000, C345S582000, C345S473000, C463S030000, C463S031000, C463S032000, C463S033000, C463S035000, C463S034000, C700S094000, C703S006000
Reexamination Certificate
active
07606375
ABSTRACT:
Reverberation parameters for one or more positions of interest are derived from graphics data used for displaying a computer-generated environment. For each position of interest for which reverberation parameters are desired, environmental parameters including distances and the hardness of features in a range of interest and at points on cubemap faces are automatically determined from the graphics data. The environmental parameters are stored with the graphics data and associated with each position of interest. Upon rendering of the computer-generated environment, reverberation property set values usable by a reverberation engine are calculated or interpolated between predetermined values according to the environmental parameters. Thus, values such as reverb, reverb delay, reflections, decay time, reflection delay, and other reverb parameters are automatically calculated, subject to selective operator tuning, and provide realistic reverberation effects in the sounds heard by a user who is experiencing the rendered environment.
REFERENCES:
patent: 6091824 (2000-07-01), Lin et al.
patent: 2005/0182608 (2005-08-01), Jahnke
3D Working Group of the Interactive Audio Special Interest Group, Interactive 3D Audio Rendering Guidelines, Sep. 20, 1999, revision 1.0a, 29 pages, published by MIDI Manufacturers Association, Los Angeles, CA, Copyright 1999 MIDI Manufacturers Association Incorporated, Portions of the Common Property Sets are Copyright 1997 Creative Labs.
3D Working Group of the Interactive Audio Special Interest Group, Interactive 3D Audio Rendering Guidelines, Sep. 20, 1999, revision 1.0a, 29 pages, published by MIDI Manufacturers Association, Los Angeles, CA, Copyright 1999 MIDI Manufacturers Association Incorporated, Portions of the Common Property Sets are Copyright 1997 Creative Labs, used with permission, Printed 1999.
Microsoft Corporation, Microsoft DirectX 9.0 Environmental Reverberation, removed from the Internet Jul. 27, 2004, 2 pages, http://msdn.microsoft.com/library/en-us/directx9—c/directx/htm/environmentalreverberation.asp?frame=true.
Bailey Richard S.
Brumitt Barry
Faulk Devona E.
Microsoft Corporation
Workman Nydegger
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