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    Coding of spherical harmonic coefficients
    4.
    发明授权
    Coding of spherical harmonic coefficients 有权
    球谐函数的编码

    公开(公告)号：US09466302B2

    公开(公告)日：2016-10-11

    申请号：US14479752

    申请日：2014-09-08

    Applicant: QUALCOMM Incorporated

    Inventor： Dipanjan Sen ,  Nils Günther Peters ,  Martin James Morrell

    IPC: H04R5/00 ,  G10L19/008

    CPC classification number: G10L19/008

    Abstract: In general, techniques are described for coding of spherical harmonic coefficients representative of a three dimensional soundfield. A device comprising a memory and one or more processors may be configured to perform the techniques. The memory may be configured to store a plurality of spherical harmonic coefficients. The one or more processors may be configured to perform an energy analysis with respect to the plurality of spherical harmonic coefficients to determine a reduced version of the plurality of spherical harmonic coefficients.

    Abstract translation: 通常，描述了代表三维声场的球谐函数的编码技术。 包括存储器和一个或多个处理器的设备可以被配置为执行这些技术。 存储器可以被配置为存储多个球谐函数。 一个或多个处理器可以被配置为执行关于多个球谐函数的能量分析以确定多个球谐函数的简化版本。

    OBTAINING SYMMETRY INFORMATION FOR HIGHER ORDER AMBISONIC AUDIO RENDERERS
    5.
    发明申请
    OBTAINING SYMMETRY INFORMATION FOR HIGHER ORDER AMBISONIC AUDIO RENDERERS 有权
    获得更高级别的有声音乐录音机的对话信息

    公开(公告)号：US20150341736A1

    公开(公告)日：2015-11-26

    申请号：US14724615

    申请日：2015-05-28

    Applicant: QUALCOMM Incorporated

    Inventor： Nils Günther Peters ,  Dipanjan Sen ,  Martin James Morrell

    IPC: H04S5/00

    CPC classification number: H04S3/02 ,  G10L19/008 ,  H04S7/30 ,  H04S7/301 ,  H04S2420/03 ,  H04S2420/11

    Abstract: In general, techniques are described for obtaining audio rendering information in a bitstream. A device configured to render higher order ambisonic coefficients comprising a processor and a memory may perform the techniques. The processor may be configured to obtain sign symmetry information indicative of sign symmetry of a matrix used to render the higher order ambisonic coefficients to generate a plurality of speaker feeds. The memory may be configured to store the sparseness information.

    Abstract translation: 通常，描述了用于在比特流中获得音频呈现信息的技术。 被配置为呈现包括处理器和存储器的更高阶的Ambisonic系数的设备可以执行这些技术。 处理器可以被配置为获得指示用于渲染高阶ambisonic系数的矩阵的符号对称性的符号对称信息，以产生多个说话者馈送。 存储器可以被配置为存储稀疏信息。

    CODING OF SPHERICAL HARMONIC COEFFICIENTS
    6.
    发明申请
    CODING OF SPHERICAL HARMONIC COEFFICIENTS 有权
    球形谐波系数的编码

    公开(公告)号：US20150071447A1

    公开(公告)日：2015-03-12

    申请号：US14479752

    申请日：2014-09-08

    Applicant: QUALCOMM Incorporated

    Inventor： Dipanjan Sen ,  Nils Günther Peters ,  Martin James Morrell

    IPC: G10L19/008

    CPC classification number: G10L19/008

    Abstract: In general, techniques are described for coding of spherical harmonic coefficients representative of a three dimensional soundfield. A device comprising a memory and one or more processors may be configured to perform the techniques. The memory may be configured to store a plurality of spherical harmonic coefficients. The one or more processors may be configured to perform an energy analysis with respect to the plurality of spherical harmonic coefficients to determine a reduced version of the plurality of spherical harmonic coefficients.

    Abstract translation: 通常，描述了代表三维声场的球谐函数的编码技术。 包括存储器和一个或多个处理器的设备可以被配置为执行这些技术。 存储器可以被配置为存储多个球谐函数。 一个或多个处理器可以被配置为执行关于多个球谐函数的能量分析以确定多个球谐函数的简化版本。

    DETERMINING RENDERERS FOR SPHERICAL HARMONIC COEFFICIENTS
    8.
    发明申请
    DETERMINING RENDERERS FOR SPHERICAL HARMONIC COEFFICIENTS 有权
    确定球形谐波系数的渲染器

    公开(公告)号：US20140219456A1

    公开(公告)日：2014-08-07

    申请号：US14174784

    申请日：2014-02-06

    Applicant: QUALCOMM Incorporated

    Inventor： Martin James Morrell ,  Nils Günther Peters ,  Dipanjan Sen

    IPC: H04S5/00

    CPC classification number: H04S5/00 ,  H04S7/30 ,  H04S7/301 ,  H04S2400/11 ,  H04S2420/11

    Abstract: In general, techniques are described for determining renderers used for rendering spherical harmonic coefficients to generate one or more loudspeaker signals. A device comprising one or more processors may perform the techniques. The one or more processors may be configured to determine a local speaker geometry of one or more speakers used for playback of spherical harmonic coefficients representative of a sound field, and configure the device to operate based on the local speaker geometry.

    Abstract translation: 通常，描述了用于确定用于渲染球谐函数以产生一个或多个扬声器信号的渲染器的技术。 包括一个或多个处理器的设备可以执行这些技术。 一个或多个处理器可以被配置为确定用于播放代表声场的球谐函数的一个或多个扬声器的本地扬声器几何形状，并且将该设备配置为基于本地扬声器几何形状进行操作。

    Transforming spherical harmonic coefficients
    10.
    发明授权
    Transforming spherical harmonic coefficients 有权

    公开(公告)号：US09685163B2

    公开(公告)日：2017-06-20

    申请号：US14192829

    申请日：2014-02-27

    Applicant: QUALCOMM Incorporated

    Inventor： Dipanjan Sen ,  Martin James Morrell ,  Nils Günther Peters

    IPC: G06F17/00 ,  G10L19/008 ,  G10L19/16

    CPC classification number: G10L19/008 ,  G10L19/018 ,  G10L19/167 ,  G10L19/20 ,  H04S2420/11

    Abstract: In general, techniques are described for transforming spherical harmonic coefficients. A device comprising one or more processors may perform the techniques. The processors may be configured to parse the bitstream to determine transformation information describing how the sound field was transformed to reduce a number of the plurality of hierarchical elements that provide information relevant in describing the sound field. The processors may further be configured to, when reproducing the sound field based on those of the plurality of hierarchical elements that provide information relevant in describing the sound field, transform the sound field based on the transformation information to reverse the transformation performed to reduce the number of the plurality of hierarchical elements.

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