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    Video content assisted audio object extraction
    1.
    发明授权
    Video content assisted audio object extraction 有权

    公开(公告)号：US10200804B2

    公开(公告)日：2019-02-05

    申请号：US15553536

    申请日：2016-02-24

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Lianwu Chen ,  Xuejing Sun ,  Lie Lu

    IPC: H04S3/00 ,  G10L19/20 ,  G06K9/00 ,  H04S3/02

    Abstract: Embodiments of the present invention relate to video content assisted audio object extraction. A method of audio object extraction from channel-based audio content is disclosed. The method comprises extracting at least one video object from video content associated with the channel-based audio content, and determining information about the at least one video object. The method further comprises extracting from the channel-based audio content an audio object to be rendered as an upmixed audio signal based on the determined information. Corresponding system and computer program product are also disclosed.

    Audio Object Clustering with Single Channel Quality Preservation
    2.
    发明申请
    Audio Object Clustering with Single Channel Quality Preservation 审中-公开

    公开(公告)号：US20170171687A1

    公开(公告)日：2017-06-15

    申请号：US15375488

    申请日：2016-12-12

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Dirk Jeroen Breebaart ,  Lianwu Chen ,  Lie Lu

    IPC: H04S7/00 ,  H04S3/00 ,  H04R5/04 ,  H04R5/02

    CPC classification number: H04S7/30 ,  H04S2400/11 ,  H04S2400/13

    Abstract: Example embodiments disclosed herein relate to audio object clustering with single channel quality preservation. A method of clustering audio objects is disclosed. The method includes determining cluster positions based on object positions of the audio objects and a reference speaker layout, the reference speaker layout indicating speakers located at different speaker positions. The method also includes determining object-to-cluster gains based on the determined cluster positions, the object positions and the reference speaker layout, an object-to-cluster gain defining a proportion of the respective audio object that is assigned to a cluster associated with one of the determined cluster positions. The method further includes clustering the audio objects based on the object-to-cluster gains and the cluster positions for generating cluster signals. Corresponding system, computer program product and device for clustering audio objects are also disclosed.

    Metadata-preserved audio object clustering
    6.
    发明授权
    Metadata-preserved audio object clustering 有权

    公开(公告)号：US11363398B2

    公开(公告)日：2022-06-14

    申请号：US15535398

    申请日：2015-12-10

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Lianwu Chen ,  Lie Lu ,  Nicolas R. Tsingos

    IPC: H04S3/00 ,  H04S7/00 ,  G06K9/62

    Abstract: Example embodiments disclosed herein relate to audio object clustering. A method for metadata-preserved audio object clustering is disclosed. The method comprises classifying a plurality of audio objects into a number of categories based on information to be preserved in metadata associated with the plurality of audio objects. The method further comprises assigning a predetermined number of clusters to the categories and allocating an audio object in each of the categories to at least one of the clusters according to the assigning. Corresponding system and computer program product are also disclosed.

    Audio object clustering based on renderer-aware perceptual difference
    7.
    发明授权
    Audio object clustering based on renderer-aware perceptual difference 有权

    公开(公告)号：US10779106B2

    公开(公告)日：2020-09-15

    申请号：US16310569

    申请日：2017-07-13

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Lianwu Chen ,  Lie Lu ,  Dirk Jeroen Breebaart

    IPC: H04S7/00 ,  H04R5/02 ,  H04S3/00

    Abstract: Example embodiments disclosed herein relate to audio object clustering based on renderer-aware perceptual difference. A method of processing audio objects is provided. The method includes obtaining renderer-related information indicating a configuration of a renderer. The method also includes determining, based on the obtained renderer-related information, a rendering difference between a first audio object and a second audio object among the audio objects with respect to the renderer. The method further includes clustering the audio objects at least in part based on the rendering difference. Corresponding system, device, and computer program product are also disclosed.

    ADAPTIVE LOUDNESS NORMALIZATION FOR AUDIO OBJECT CLUSTERING
    8.
    发明申请
    ADAPTIVE LOUDNESS NORMALIZATION FOR AUDIO OBJECT CLUSTERING 有权

    公开(公告)号：US20220159395A1

    公开(公告)日：2022-05-19

    申请号：US17427665

    申请日：2020-02-12

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Lianwu Chen ,  Lie Lu

    IPC: H04S7/00

    Abstract: A method of processing audio content including a plurality of audio elements comprises: clustering the plurality of audio elements into a plurality of clusters of audio elements; and for a cluster among the plurality of clusters: for each audio element in the cluster, determining a measure of energy that the audio element contributes to the cluster; for at least one audio element in the cluster, determining a compensation gain based at least in part on the measures of energy for the audio elements in the cluster; and applying the compensation gain to the at least one audio element in the cluster.

    Audio object clustering with single channel quality preservation
    9.
    发明授权
    Audio object clustering with single channel quality preservation 有权

    公开(公告)号：US10278000B2

    公开(公告)日：2019-04-30

    申请号：US15375488

    申请日：2016-12-12

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Dirk Jeroen Breebaart ,  Lianwu Chen ,  Lie Lu

    IPC: H04S7/00

    Abstract: Example embodiments disclosed herein relate to audio object clustering with single channel quality preservation. A method of clustering audio objects is disclosed. The method includes determining cluster positions based on object positions of the audio objects and a reference speaker layout, the reference speaker layout indicating speakers located at different speaker positions. The method also includes determining object-to-cluster gains based on the determined cluster positions, the object positions and the reference speaker layout, an object-to-cluster gain defining a proportion of the respective audio object that is assigned to a cluster associated with one of the determined cluster positions. The method further includes clustering the audio objects based on the object-to-cluster gains and the cluster positions for generating cluster signals. Corresponding system, computer program product and device for clustering audio objects are also disclosed.

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