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    Adaptive panner of audio objects
    2.
    发明授权
    Adaptive panner of audio objects 有权

    公开(公告)号：US11356787B2

    公开(公告)日：2022-06-07

    申请号：US17149683

    申请日：2021-01-14

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  Dolby International AB

    Inventor： Jun Wang ,  Giulio Cengarle ,  Juan Felix Torres ,  Daniel Arteaga

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

    Abstract: An audio object including audio content and object metadata is received. The object metadata indicates an object spatial position of the audio object to be rendered by audio speakers in a playback environment. Based on the object spatial position and source spatial positions of the audio speakers, initial gain values for the audio speakers are determined. The initial gain values can be used to select a set of audio speakers from among the audio speakers. Based on the object spatial position and a set of source spatial positions at which the set of audio speakers are respectively located in the playback environment, a set of non-negative optimized gain values for the set of audio speakers is determined. The audio object at the object spatial position is rendered with the set of optimized gain values for the set of audio speakers.

    ADAPTIVE PANNER OF AUDIO OBJECTS
    4.
    发明申请
    ADAPTIVE PANNER OF AUDIO OBJECTS 审中-公开

    公开(公告)号：US20190387342A1

    公开(公告)日：2019-12-19

    申请号：US16555126

    申请日：2019-08-29

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  Dolby International AB

    Inventor： Jun Wang ,  Giulio Cengarle ,  Juan Felix Torres ,  Daniel Arteaga

    IPC: H04S3/00 ,  H04S7/00

    Abstract: An audio object including audio content and object metadata is received. The object metadata indicates an object spatial position of the audio object to be rendered by audio speakers in a playback environment. Based on the object spatial position and source spatial positions of the audio speakers, initial gain values for the audio speakers are determined. The initial gain values can be used to select a set of audio speakers from among the audio speakers. Based on the object spatial position and a set of source spatial positions at which the set of audio speakers are respectively located in the playback environment, a set of non-negative optimized gain values for the set of audio speakers is determined. The audio object at the object spatial position is rendered with the set of optimized gain values for the set of audio speakers.

    Decomposing audio signals
    5.
    发明授权
    Decomposing audio signals 有权

    公开(公告)号：US10453464B2

    公开(公告)日：2019-10-22

    申请号：US15326378

    申请日：2015-07-14

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Jun Wang ,  Lie Lu

    IPC: G10L19/02 ,  G10L19/008 ,  H04S3/00 ,  G10L21/0308 ,  G10L25/21

    Abstract: Example embodiments disclosed herein relate to signal processing. A method for decomposing a plurality of audio signals from at least two different channels is disclosed. The method obtains a set of components that are weakly correlated wherein the set of components generated based on the plurality of audio signals. The method extract a feature from the set of components and determining determines a set of gains associated with the set of components at least in part based on the extracted feature. Each of the gains indicate a proportion of a diffuse part in the associated component and decompose the plurality of audio signals by applying the set of gains to the set of components. Corresponding system and computer program product are also disclosed.

    Audio source separation
    6.
    发明授权
    Audio source separation 有权

    公开(公告)号：US10410641B2

    公开(公告)日：2019-09-10

    申请号：US16091069

    申请日：2017-04-06

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Jun Wang ,  Lie Lu ,  Qingyuan Bin

    IPC: G10L19/008 ,  G10L21/0232 ,  G10L25/21 ,  H04S7/00

    Abstract: The present document describes a method (100) for extracting audio sources (301) from audio channels (302). The method (100) includes updating (102) a Wiener filter matrix based on a mixing matrix from a source matrix and based on a power matrix of the audio sources (301). Furthermore, the method (100) includes updating (103) a cross-covariance matrix of the audio channels (302) and of the audio sources (301) and an auto-covariance matrix of the audio sources (301), based on the updated Wiener filter matrix and based on an auto-covariance matrix of the audio channels (302). In addition, the method (100) includes updating (104) the mixing matrix and the power matrix based on the updated cross-covariance matrix of the audio channels (302) and of the audio sources (301), and/or based on the updated auto-covariance matrix of the audio sources (301).

    ADAPTIVE PANNER OF AUDIO OBJECTS
    10.
    发明公开
    ADAPTIVE PANNER OF AUDIO OBJECTS 审中-公开

    公开(公告)号：US20240179485A1

    公开(公告)日：2024-05-30

    申请号：US18535192

    申请日：2023-12-11

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

    Inventor： Jun Wang ,  Giulio Cengarle ,  Juan Felix Torres ,  Daniel Arteaga

    IPC: H04S7/00 ,  H04R5/02

    CPC classification number: H04S7/302 ,  H04R5/02 ,  H04S7/308 ,  H04S2400/11 ,  H04S2400/13

    Abstract: An audio object including audio content and object metadata is received. The object metadata indicates an object spatial position of the audio object to be rendered by audio speakers in a playback environment. Based on the object spatial position and source spatial positions of the audio speakers, initial gain values for the audio speakers are determined. The initial gain values can be used to select a set of audio speakers from among the audio speakers. Based on the object spatial position and a set of source spatial positions at which the set of audio speakers are respectively located in the playback environment, a set of non-negative optimized gain values for the set of audio speakers is determined. The audio object at the object spatial position is rendered with the set of optimized gain values for the set of audio speakers.

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