Method and system for processing directed sound in an acoustic virtual environment
First Claim
Patent Images
1. A method for processing directed sound in an acoustic virtual environment in an electronic device, said acoustic virtual environment comprising at least one sound source, the method comprising:
- attaching a reference direction and a set of selected directions to the at least one sound source, each selected direction differing from said reference direction,establishing a direction dependent filtering arrangement having at least one parameter disposed to at least partly determine a filtering effect of the direction dependent filtering arrangement, said at least one parameter enabling the direction dependent filtering arrangement to model that said at least one sound source radiates a different sound to said reference direction than to a direction that deviates from said reference direction,for each selected direction defining at least one value for each of said at least one parameter, andfiltering, with the direction dependent filtering arrangement, a signal that represents sound propagating from said at least one sound source in said reference direction in order to produce a signal that represents sound propagating from said at least one sound source in said direction that deviates from said reference direction.
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Abstract
An acoustic virtual environment is processed in an electronic device. The acoustic virtual environment comprises at least one sound source (300). In order to model the manner in which the sound is directed, a direction dependent filtering arrangement (306, 307, 308, 309) is attached to the sound source, whereby the effect of the filtering arrangement on the sound depends on predetermined parameters. The directivity can depend on the frequency of the sound.
23 Citations
16 Claims
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1. A method for processing directed sound in an acoustic virtual environment in an electronic device, said acoustic virtual environment comprising at least one sound source, the method comprising:
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attaching a reference direction and a set of selected directions to the at least one sound source, each selected direction differing from said reference direction, establishing a direction dependent filtering arrangement having at least one parameter disposed to at least partly determine a filtering effect of the direction dependent filtering arrangement, said at least one parameter enabling the direction dependent filtering arrangement to model that said at least one sound source radiates a different sound to said reference direction than to a direction that deviates from said reference direction, for each selected direction defining at least one value for each of said at least one parameter, and filtering, with the direction dependent filtering arrangement, a signal that represents sound propagating from said at least one sound source in said reference direction in order to produce a signal that represents sound propagating from said at least one sound source in said direction that deviates from said reference direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for processing directed sound in an acoustic virtual environment in an electronic device, said acoustic virtual environment comprising at least one sound source, the system comprising:
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means for attaching a reference direction and a set selected directions to the at least one sound source, each selected direction differing from said reference direction, a direction dependent filtering arrangement disposed to filter a signal that represents sound propagating from said at least one sound source in said reference direction in order to produce a signal that represents sound propagating from said at least one sound source in a direction that deviates from said reference direction, the direction dependent filtering arrangement having at least one parameter disposed to at least partly determine a filtering effect of the direction dependent filtering arrangement, said at least one parameter enabling the direction dependent filtering arrangement to model that said at least one sound source radiates a different sound to said reference direction than to said direction that deviates from said reference direction, and means for associating a value for each of said at least one parameter with each selected direction. - View Dependent Claims (12, 13, 14)
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15. An electronic device for processing directed sound of an acoustic virtual environment, the acoustic virtual environment comprising at least one sound source, the electronic device comprising:
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circuitry that attaches a reference direction and a set of selected directions to the at least one sound source, each selected direction differing from the reference direction, a direction dependent filtering arrangement that filters a signal that represents sound propagating from the at least one sound source in the reference direction in order to produce a signal that represents sound propagating from the at least one sound source in a direction that deviates from the reference direction, the direction dependent filtering arrangement having at least one parameter that at least partly determines a filtering effect of the direction dependent filtering arrangement, the at least one parameter enabling the direction dependent filtering arrangement to model that the at least one sound source radiates a different sound to the reference direction than to the direction that deviates from the reference direction, and circuitry that associates a value for each of said at least one parameter with each selected direction.
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16. A system for processing directed sound in an acoustic virtual environment in an electronic device, the acoustic virtual environment comprising at least one sound source, the system comprising:
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circuitry that attaches a reference direction and a set of selected directions to the at least one sound source, each selected direction differing from the reference direction, a direction dependent filtering arrangement that filters a signal that represents sound propagating from the at least one sound source in the reference direction in order to produce a signal that represents sound propagating from the at least one sound source in a direction that deviates from the reference direction, the direction dependent filtering arrangement having at least one parameter disposed to at least partly determine a filtering effect of the direction dependent filtering arrangement, the at least one parameter enabling the direction dependent filtering arrangement to model that the at least one sound source radiates a different sound to the reference direction than to the direction that deviates from the reference direction, and circuitry that associates a value for each of the at least one parameter with each selected direction.
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Specification