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    Content-adaptive surround sound virtualization
    135.
    发明授权
    Content-adaptive surround sound virtualization 有权

    公开(公告)号：US10306392B2

    公开(公告)日：2019-05-28

    申请号：US15772383

    申请日：2016-11-02

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Xin Liu ,  Lie Lu ,  Alan J. Seefeldt

    IPC: H04S5/00 ,  H04S7/00 ,  H04R1/26 ,  G06F17/18 ,  G06F16/683 ,  G06F17/30

    Abstract: Example embodiments disclosed herein relate to content-adaptive surround sound virtualization. A method of virtualizing surround sound is disclosed. The method includes receiving a set of input audio signals, each of the input audio signals being indicative of sound from one of different sound sources, and determining a probability of the set of input audio signals belonging to a predefined audio content category. The method also includes determining a virtualization amount based on the determined probability, the virtualization amount indicating to which extent the set of input audio signals is virtualized as surround sound. The method further includes performing surround sound virtualization on two or more input audio signals in the set based on the determined virtualization amount and generating output audio signals based on the virtualized input audio signals and other input audio signals in the set. Corresponding system and computer program product for virtualizing surround sound are also disclosed.

    Processing object-based audio signals
    137.
    发明授权
    Processing object-based audio signals 有权

    公开(公告)号：US10251010B2

    公开(公告)日：2019-04-02

    申请号：US16143351

    申请日：2018-09-26

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Alan J. Seefeldt ,  Lie Lu ,  Chen Zhang

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

    Abstract: An audio processing system and method which calculates, based on spatial metadata of the audio object, a panning coefficient for each of the audio objects in relation to each of a plurality of predefined channel coverage zones. Converts the audio signal into submixes in relation to the predefined channel coverage zones based on the calculated panning coefficients and the audio objects. Each of the submixes indicating a sum of components of the plurality of the audio objects in relation to one of the predefined channel coverage zones. Generating a submix gain by applying an audio processing to each of the submix and controls an object gain applied to each of the audio objects. The object gain being as a function of the panning coefficients for each of the audio objects and the submix gains in relation to each of the predefined channel coverage zones.

    Processing object-based audio signals
    138.
    发明授权
    Processing object-based audio signals 有权

    公开(公告)号：US10111022B2

    公开(公告)日：2018-10-23

    申请号：US15577510

    申请日：2016-05-26

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Alan J. Seefeldt ,  Lie Lu ,  Chen Zhang

    IPC: H04S7/00 ,  H04S3/00

    Abstract: An audio processing system and method which calculates, based on spatial metadata of the audio object, a panning coefficient for each of the audio objects in relation to each of a plurality of predefined channel coverage zones. Converts the audio signal into submixes in relation to the predefined channel coverage zones based on the calculated panning coefficients and the audio objects. Each of the submixes indicating a sum of components of the plurality of the audio objects in relation to one of the predefined channel coverage zones. Generating a submix gain by applying an audio processing to each of the submix and controls an object gain applied to each of the audio objects. The object gain being as a function of the panning coefficients for each of the audio objects and the submix gains in relation to each of the predefined channel coverage zones.

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