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    METHOD AND SYSTEM FOR HANDLING GLOBAL TRANSITIONS BETWEEN LISTENING POSITIONS IN A VIRTUAL REALITY ENVIRONMENT
    1.
    发明申请
    METHOD AND SYSTEM FOR HANDLING GLOBAL TRANSITIONS BETWEEN LISTENING POSITIONS IN A VIRTUAL REALITY ENVIRONMENT 有权

    公开(公告)号：US20250142280A1

    公开(公告)日：2025-05-01

    申请号：US18942909

    申请日：2024-11-11

    Applicant: Dolby International AB

    Inventor： Leon Terentiv ,  Christof Fersch ,  Daniel Fischer

    IPC: H04S7/00 ,  G06T19/00

    Abstract: A method (900) for rendering audio in a virtual reality rendering environment (180) is described. The method (900) comprises rendering (901) an origin audio signal of an origin audio source (113) of an origin audio scene (111) from an origin source position on a sphere (114) around a listening position (201) of a listener (181). Furthermore, the method (900) comprises determining (902) that the listener (181) moves from the listening position (201) within the origin audio scene (111) to a listening position (202) within a different destination audio scene (112). In addition, the method (900) comprises applying (903) a fade-out gain to the origin audio signal to determine a modified origin audio signal, and rendering (903) the modified origin audio signal of the origin audio source (113) from the origin source position on the sphere (114) around the listening position (201, 202).

    Method and system for handling global transitions between listening positions in a virtual reality environment
    4.
    发明授权
    Method and system for handling global transitions between listening positions in a virtual reality environment 有权

    公开(公告)号：US11405741B2

    公开(公告)日：2022-08-02

    申请号：US16768671

    申请日：2018-12-18

    Applicant: DOLBY INTERNATIONAL AB

    Inventor： Leon Terentiv ,  Christof Fersch ,  Daniel Fischer

    IPC: H04R5/00 ,  H04S7/00 ,  G06T19/00 ,  H04R5/02

    Abstract: A method (900) for rendering audio in a virtual reality rendering environment (180) is described. The method (900) comprises rendering (901) an origin audio signal of an origin audio source (113) of an origin audio scene (111) from an origin source position on a sphere (114) around a listening position (201) of a listener (181). Furthermore, the method (900) comprises determining (902) that the listener (181) moves from the listening position (201) within the origin audio scene (111) to a listening position (202) within a different destination audio scene (112). In addition, the method (900) comprises applying (903) a fade-out gain to the origin audio signal to determine a modified origin audio signal, and rendering (903) the modified origin audio signal of the origin audio source (113) from the origin source position on the sphere (114) around the listening position (201, 202).

    Methods, apparatus and systems for diffraction modelling based on grid pathfinding
    5.
    发明授权
    Methods, apparatus and systems for diffraction modelling based on grid pathfinding 有权

    公开(公告)号：US12245017B2

    公开(公告)日：2025-03-04

    申请号：US17914736

    申请日：2021-03-29

    Applicant: Dolby International AB

    Inventor： Leon Terentiv ,  Daniel Fischer ,  Christof Fersch ,  Panji Setiawan

    IPC: H04S7/00

    Abstract: Described herein is a method of processing audio content for rendering in a three-dimensional audio scene, wherein the audio content comprises a sound source at a source position, the method comprising: obtaining a voxelized representation of the three-dimensional audio scene, wherein the voxelized representation indicates volume elements in which sound can propagate and volume elements by which sound is occluded; generating a two-dimensional projection map for the audio scene based on the voxelized representation by applying a projection operation to the voxelized representation that projects onto a horizontal plane; and determining parameters indicating a virtual source position of a virtual sound source based on the source position, a listener position, and the projection map, to simulate, by rendering a virtual source signal from the virtual source position, an impact of acoustic diffraction by the three-dimensional audio scene on a source signal of the sound source at the source position. Described are moreover a corresponding apparatus as well as corresponding computer program products.

    Methods, apparatus and systems for three degrees of freedom (3DoF+) extension of MPEG-H 3D audio
    9.
    发明授权
    Methods, apparatus and systems for three degrees of freedom (3DoF+) extension of MPEG-H 3D audio 有权

    公开(公告)号：US11882426B2

    公开(公告)日：2024-01-23

    申请号：US17743442

    申请日：2022-05-12

    Applicant: DOLBY INTERNATIONAL AB

    Inventor： Christof Fersch ,  Leon Terentiv ,  Daniel Fischer

    IPC: H04S7/00

    CPC classification number: H04S7/303 ,  H04S2400/11

    Abstract: Described is a method of processing position information indicative of an object position of an audio object, wherein the object position is usable for rendering of the audio object, that comprises: obtaining listener orientation information indicative of an orientation of a listener's head; obtaining listener displacement information indicative of a displacement of the listener's head; determining the object position from the position information; modifying the object position based on the listener displacement information by applying a translation to the object position; and further modifying the modified object position based on the listener orientation information. Further described is a corresponding apparatus for processing position information indicative of an object position of an audio object, wherein the object position is usable for rendering of the audio object.

    Methods, apparatus and systems for a pre-rendered signal for audio rendering
    10.
    发明授权
    Methods, apparatus and systems for a pre-rendered signal for audio rendering 有权

    公开(公告)号：US11540079B2

    公开(公告)日：2022-12-27

    申请号：US17046295

    申请日：2019-04-08

    Applicant: DOLBY INTERNATIONAL AB

    Inventor： Leon Terentiv ,  Christof Fersch ,  Daniel Fischer

    IPC: H04S7/00 ,  G10L19/008 ,  H04S3/00

    Abstract: The present disclosure relates to a method of decoding audio scene content from a bitstream by a decoder that includes an audio renderer with one or more rendering tools. The method comprises receiving the bitstream, decoding a description of an audio scene from the bitstream, determining one or more effective audio elements from the description of the audio scene, determining effective audio element information indicative of effective audio element positions of the one or more effective audio elements from the description of the audio scene, decoding a rendering mode indication from the bitstream, wherein the rendering mode indication is indicative of whether the one or more effective audio elements represent a sound field obtained from pre-rendered audio elements and should be rendered using a predetermined rendering mode, and in response to the rendering mode indication indicating that the one or more effective audio elements represent the sound field obtained from pre-rendered audio elements and should be rendered using the predetermined rendering mode, rendering the one or more effective audio elements using the predetermined rendering mode, wherein rendering the one or more effective audio elements using the predetermined rendering mode takes into account the effective audio element information, and wherein the predetermined rendering mode defines a predetermined configuration of the rendering tools for controlling an impact of an acoustic environment of the audio scene on the rendering output. The disclosure further relates to a method of generating audio scene content and a method of encoding audio scene content into a bitstream.

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