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    METHODS, APPARATUS AND SYSTEMS FOR MODELLING AUDIO OBJECTS WITH EXTENT
    1.
    发明公开
    METHODS, APPARATUS AND SYSTEMS FOR MODELLING AUDIO OBJECTS WITH EXTENT 审中-公开

    公开(公告)号：US20240223987A1

    公开(公告)日：2024-07-04

    申请号：US18557590

    申请日：2022-04-28

    Applicant: DOLBY INTERNATIONAL AB

    Inventor： Leon TERENTIV ,  Daniel FISCHER ,  Panji SETIAWAN ,  Christof FERSCH

    IPC: H04S7/00

    CPC classification number: H04S7/303 ,  H04S2400/11

    Abstract: A method of modelling extended audio objects for audio rendering in a virtual or augmented reality environment is described. The method comprises obtaining an extent representation indicative of a geometric form of an extended audio object and information relating to one or more first audio sources that are associated with the extended audio object. Furthermore, the method comprises obtaining a relative point on the geometric form of the extended audio object based on a user position in the virtual or augmented reality environment. The method also comprises determining an extent parameter for the extent representation based on the user position and the relative point and determining positions of one or more second audio sources, relative to the user position, for modelling the extended audio object. In addition, the method comprises outputting a modified representation of the extended audio object for modelling the extended audio object.

    METHOD AND SYSTEM FOR HANDLING LOCAL TRANSITIONS BETWEEN LISTENING POSITIONS IN A VIRTUAL REALITY ENVIRONMENT
    3.
    发明公开
    METHOD AND SYSTEM FOR HANDLING LOCAL TRANSITIONS BETWEEN LISTENING POSITIONS IN A VIRTUAL REALITY ENVIRONMENT 审中-公开

    公开(公告)号：US20230362575A1

    公开(公告)日：2023-11-09

    申请号：US18352115

    申请日：2023-07-13

    Applicant: DOLBY INTERNATIONAL AB

    Inventor： Leon TERENTIV ,  Christof FERSCH ,  Daniel FISCHER

    IPC: H04S7/00 ,  H04S3/00

    CPC classification number: H04S7/303 ,  H04S3/008 ,  H04S2400/11 ,  H04S2400/01 ,  H04S2400/13

    Abstract: A method (910) for rendering an audio signal in a virtual reality rendering environment (180) is described. The method (910) comprises rendering (911) an origin audio signal of an audio source (311, 312, 313) from an origin source position on an origin sphere (114) around an origin listening position (301) of a listener (181). Furthermore, the method (900) comprises determining (912) that the listener (181) moves from the origin listening position (301) to a destination listening position (302). In addition, the method (900) comprises determining (913) a destination source position of the audio source (311, 312, 313) on a destination sphere (114) around the destination listening position (302) based on the origin source position, and determining (914) a destination audio signal of the audio source (311, 312, 313) based on the origin audio signal. Furthermore, the method (900) comprises rendering (915) the destination audio signal of the audio source (311, 312, 313) from the destination source position on the destination sphere (114) around the destination listening position (302).

    METHOD AND SYSTEM FOR HANDLING LOCAL TRANSITIONS BETWEEN LISTENING POSITIONS IN A VIRTUAL REALITY ENVIRONMENT
    6.
    发明申请
    METHOD AND SYSTEM FOR HANDLING LOCAL TRANSITIONS BETWEEN LISTENING POSITIONS IN A VIRTUAL REALITY ENVIRONMENT 有权

    公开(公告)号：US20210092546A1

    公开(公告)日：2021-03-25

    申请号：US16954301

    申请日：2018-12-18

    Applicant: DOLBY INTERNATIONAL AB

    Inventor： Leon TERENTIV ,  Christof FERSCH ,  Daniel FISCHER

    IPC: H04S7/00 ,  H04S3/00

    Abstract: A method (910) for rendering an audio signal in a virtual reality rendering environment (180) is described. The method (910) comprises rendering (911) an origin audio signal of an audio source (311, 312, 313) from an origin source position on an origin sphere (114) around an origin listening position (301) of a listener (181). Furthermore, the method (900) comprises determining (912) that the listener (181) moves from the origin listening position (301) to a destination listening position (302). In addition, the method (900) comprises determining (913) a destination source position of the audio source (311, 312, 313) on a destination sphere (114) around the destination listening position (302) based on the origin source position, and determining (914) a destination audio signal of the audio source (311, 312, 313) based on the origin audio signal. Furthermore, the method (900) comprises rendering (915) the destination audio signal of the audio source (311, 312, 313) from the destination source position on the destination sphere (114) around the destination listening position (302).

    METHODS, APPARATUS AND SYSTEMS FOR THREE DEGREES OF FREEDOM (3DOF+) EXTENSION OF MPEG-H 3D AUDIO
    7.
    发明申请
    METHODS, APPARATUS AND SYSTEMS FOR THREE DEGREES OF FREEDOM (3DOF+) EXTENSION OF MPEG-H 3D AUDIO 有权

    公开(公告)号：US20210037335A1

    公开(公告)日：2021-02-04

    申请号：US17045983

    申请日：2019-04-09

    Applicant: DOLBY INTERNATIONAL AB

    Inventor： Christof FERSCH ,  Leon TERENTIV ,  Daniel FISCHER

    IPC: H04S7/00

    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 GENERATION, TRANSPORTATION AND PROCESSING OF IMMEDIATE PLAYOUT FRAMES (IPFS)
    8.
    发明公开
    METHODS, APPARATUS AND SYSTEMS FOR GENERATION, TRANSPORTATION AND PROCESSING OF IMMEDIATE PLAYOUT FRAMES (IPFS) 审中-公开

    公开(公告)号：US20240347068A1

    公开(公告)日：2024-10-17

    申请号：US18608664

    申请日：2024-03-18

    Applicant: Dolby International AB

    Inventor： Christof Joseph FERSCH ,  Daniel FISCHER

    IPC: G10L19/16 ,  G06F3/16

    CPC classification number: G10L19/167 ,  G06F3/162 ,  G06F3/165

    Abstract: Described herein is an audio decoder for decoding a bitstream of encoded audio data, wherein the bitstream of encoded audio data represents a sequence of audio sample values and comprises a plurality of frames, wherein each frame comprises associated encoded audio sample values, the audio decoder comprising: a determiner configured to determine whether a frame of the bitstream of encoded audio data is an immediate playout frame comprising encoded audio sample values associated with a current frame and additional information; and an initializer configured to initialize the decoder if the determiner determines that the frame is an immediate playout frame, wherein initializing the decoder comprises decoding the encoded audio sample values comprised by the additional information before decoding the encoded audio sample values associated with the current frame. Described are further a method for decoding said bitstream of encoded audio data as well as an audio encoder, a system of audio encoders and a method for generating said bitstream of encoded audio data with immediate playout frames. Described are moreover also an apparatus for generating immediate playout frames in a bitstream of encoded audio data or for removing immediate playout frames from a bitstream of encoded audio data and respective non-transitory digital storage media.

    METHODS, APPARATUS AND SYSTEMS FOR A PRE-RENDERED SIGNAL FOR AUDIO RENDERING
    10.
    发明公开
    METHODS, APPARATUS AND SYSTEMS FOR A PRE-RENDERED SIGNAL FOR AUDIO RENDERING 审中-公开

    公开(公告)号：US20230262407A1

    公开(公告)日：2023-08-17

    申请号：US18145207

    申请日：2022-12-22

    Applicant: DOLBY INTERNATIONAL AB

    Inventor： Leon TERENTIV ,  Christof FERSCH ,  Daniel FISCHER

    IPC: H04S7/00

    CPC classification number: H04S7/303 ,  H04S2400/11 ,  H04S2420/03

    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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