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US 10,708,436 B2Granted
Normalization of soundfield orientations based on auditory scene analysis
AssigneeDolby Laboratories Licensing Corporation
InventorRichard J. Cartwright
Life of this patent
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Abstract
Embodiments are described for a soundfield system that receives a transmitting soundfield, wherein the transmitting soundfield includes a sound source at a location in the transmitting soundfield. The system determines a rotation angle for rotating the transmitting soundfield based on a desired location for the sound source. The transmitting soundfield is rotated by the determined angle and the system obtains a listener's soundfield based on the rotated transmitting soundfield. The listener's soundfield is transmitted for rendering to a listener.
Claims22
A method comprising:
- receiving a soundfield, the soundfield including a plurality of sound sources at a plurality of locations, wherein the plurality of sound sources includes at least a sound source at a location in the soundfield, wherein the soundfield encodes sound pressure information and directionality information for each of the plurality of sound sources;
- receiving a rotation angle for rotating the soundfield, wherein the rotation angle is based on a desired location for the sound source;
- rotating the soundfield by the rotation angle, wherein rotating the soundfield rotates each of the plurality of sound sources by the rotation angle;
- obtaining a listener's soundfield based on the rotated soundfield;
- and
- transmitting the listener's soundfield for rendering to a listener through an endpoint device,
- the method further comprising:
- controlling a directionality of the soundfield, prior to rotating the soundfield.
5 more elements
An apparatus comprising:
- a scene analysis unit for receiving a soundfield, the soundfield including a plurality of locations, wherein the plurality of sound sources includes at least a sound source at a location in the soundfield, wherein the soundfield encodes sound pressure information and directionality information for each of the plurality of sound sources;
- a transition control unit for determining a rotation angle for rotating the soundfield, the determination of the rotation angle based on a desired location for the sound source;
- and
- a rotation component for rotating the soundfield by the rotation angle, obtaining a listener's soundfield based on the rotated soundfield, and transmitting the listener's soundfield for rendering to a listener through an endpoint device,
- wherein the rotation component further controls a directionality of the soundfield, prior to rotating the soundfield.
2 more elements
Dependencies are inferred from the claim text.