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    CONVERSION FROM OBJECT-BASED AUDIO TO HOA
    21.
    发明申请
    CONVERSION FROM OBJECT-BASED AUDIO TO HOA 有权

    公开(公告)号：US20170105085A1

    公开(公告)日：2017-04-13

    申请号：US15266910

    申请日：2016-09-15

    Applicant: QUALCOMM Incorporated

    Inventor： Moo Young Kim ,  Dipanjan Sen

    IPC: H04S7/00 ,  H04S3/02 ,  G10L19/20

    CPC classification number: H04S7/308 ,  G10L19/008 ,  G10L19/167 ,  G10L19/173 ,  G10L19/20 ,  H04S3/02 ,  H04S2400/01 ,  H04S2420/11

    Abstract: A device obtains an object-based representation of an audio signal of an audio object. The audio signal corresponds to a time interval. Additionally, the device obtains a representation of a spatial vector for the audio object, wherein the spatial vector is defined in a Higher-Order Ambisonics (HOA) domain and is based on a first plurality of loudspeaker locations. The device generates, based on the audio signal of the audio object and the spatial vector, a plurality of audio signals. Each respective audio signal of the plurality of audio signals corresponds to a respective loudspeaker in a plurality of local loudspeakers at the second plurality of loudspeaker locations different from the first plurality of loudspeaker locations.

    CODING NUMBERS OF CODE VECTORS FOR INDEPENDENT FRAMES OF HIGHER-ORDER AMBISONIC COEFFICIENTS
    23.
    发明申请
    CODING NUMBERS OF CODE VECTORS FOR INDEPENDENT FRAMES OF HIGHER-ORDER AMBISONIC COEFFICIENTS 有权
    高阶健康系数独立框架代码矢量代码编号

    公开(公告)号：US20170032798A1

    公开(公告)日：2017-02-02

    申请号：US15290213

    申请日：2016-10-11

    Applicant: QUALCOMM Incorporated

    Inventor： Nils Günther Peters ,  Dipanjan Sen

    IPC: G10L19/038 ,  G10L19/20 ,  H04S7/00 ,  G10L19/008 ,  G10L19/002

    CPC classification number: G10L19/038 ,  G10L19/002 ,  G10L19/008 ,  G10L19/08 ,  G10L19/20 ,  G10L2019/0001 ,  H04R5/00 ,  H04R2499/15 ,  H04S3/002 ,  H04S7/30 ,  H04S2400/01 ,  H04S2420/11

    Abstract: In general, techniques are described for coding a number of code vectors for independent frame of higher order ambisonic coefficients. An audio decoding device comprising a memory and a processor may perform the techniques. The memory may store a first frame of a bitstream and a second frame of the bitstream. The processor may extract, from the first frame, one or more bits indicative of whether the first frame is an independent frame that includes information specifying a number of code vectors to be used when performing vector dequantization with respect to the vector. The processor may also extract, from the first frame without referencing the second frame, the information specifying the number of code vectors.

    Abstract translation: 通常，描述了用于编码用于独立的高阶ambisonic系数的帧的多个码矢量的技术。 包括存储器和处理器的音频解码装置可以执行这些技术。 存储器可以存储比特流的第一帧和比特流的第二帧。 处理器可以从第一帧提取一个或多个指示第一帧是否是独立帧的一个或多个比特，其中包括指定当相对于向量执行向量去量化时要使用的代码矢量的数量的信息。 处理器还可以从第一帧提取不参考第二帧的指定代码矢量数量的信息。

    EXTRACTING DECOMPOSED REPRESENTATIONS OF A SOUND FIELD BASED ON A SECOND CONFIGURATION MODE
    24.
    发明申请
    EXTRACTING DECOMPOSED REPRESENTATIONS OF A SOUND FIELD BASED ON A SECOND CONFIGURATION MODE 有权
    基于第二种配置模式提取声场的分解表示

    公开(公告)号：US20160366530A1

    公开(公告)日：2016-12-15

    申请号：US15247364

    申请日：2016-08-25

    Applicant: QUALCOMM Incorporated

    Inventor： Nils Günther Peters ,  Dipanjan Sen

    IPC: H04S5/00 ,  G10L19/20 ,  G10L19/16

    CPC classification number: H04S5/005 ,  G06F17/16 ,  G10L19/002 ,  G10L19/008 ,  G10L19/0204 ,  G10L19/038 ,  G10L19/06 ,  G10L19/167 ,  G10L19/20 ,  G10L25/18 ,  G10L2019/0001 ,  G10L2019/0005 ,  H04R2205/021 ,  H04S7/30 ,  H04S7/304 ,  H04S7/40 ,  H04S2400/01 ,  H04S2400/15 ,  H04S2420/01 ,  H04S2420/03 ,  H04S2420/11

    Abstract: In general, techniques are described for obtaining spherical harmonic coefficients (SHC). A device comprising a processor and a memory may be configured to perform the techniques. The processor may obtain a set of coefficients of a vector representative a distinct component of a sound field, the vector having been decomposed from SHC representative of the sound field. The processor may obtain a configuration mode by which to extract the coefficients, where the configuration mode indicates that the coefficients include coefficients corresponding to an order greater than an order of a basis function to which one or more of the spherical harmonic coefficients correspond and exclude at least one of the coefficients corresponding to a greater order. The processor may extract the coefficients of the vector based on the obtained configuration mode. The memory may be configured to store the non-zero set of the coefficients of the vector.

    Abstract translation: 通常，描述了获得球谐函数（SHC）的技术。 包括处理器和存储器的设备可以被配置为执行这些技术。 处理器可以获得代表声场的不同分量的矢量的一组系数，该矢量已经从表示声场的SHC分解。 处理器可以获得用于提取系数的配置模式，其中配置模式指示系数包括对应于大于一个或多个球谐函数对应于并排除的基函数的顺序的顺序的系数 至少一个系数对应于更大的顺序。 处理器可以基于获得的配置模式来提取向量的系数。 存储器可以被配置为存储向量的系数的非零集合。

    REDUCING CORRELATION BETWEEN HIGHER ORDER AMBISONIC (HOA) BACKGROUND CHANNELS
    28.
    发明申请
    REDUCING CORRELATION BETWEEN HIGHER ORDER AMBISONIC (HOA) BACKGROUND CHANNELS 有权
    降低高阶健康（HOA）背景通道之间的相关性

    公开(公告)号：US20160007132A1

    公开(公告)日：2016-01-07

    申请号：US14789961

    申请日：2015-07-01

    Applicant: QUALCOMM Incorporated

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

    IPC: H04S5/00

    CPC classification number: H04S5/00 ,  G10L19/008 ,  H04R5/04 ,  H04S3/008 ,  H04S2420/11

    Abstract: In general, techniques are described for compression and decoding of audio data are generally disclosed. An example device for compressing audio data includes one or more processors configured to apply a decorrelation transform to ambient ambisonic coefficients to obtain a decorrelated representation of the ambient ambisonic coefficients, the ambient HOA coefficients having been extracted from a plurality of higher order ambisonic coefficients and representative of a background component of a soundfield described by the plurality of higher order ambisonic coefficients, wherein at least one of the plurality of higher order ambisonic coefficients is associated with a spherical basis function having an order greater than one.

    Abstract translation: 一般来说，描述了音频数据的压缩和解码技术。 用于压缩音频数据的示例性设备包括一个或多个处理器，其被配置为将去相关变换应用于周围环境系数，以获得周围环境系数的解相关表示，已经从多个较高阶的对数系数中提取了环境HOA系数，并且具有代表性 由所述多个高次数散度系数描述的声场的背景分量，其中所述多个高次数散度系数中的至少一个与具有大于1的阶数的球面基函数相关联。

    CODING VECTORS DECOMPOSED FROM HIGHER-ORDER AMBISONICS AUDIO SIGNALS
    29.
    发明申请
    CODING VECTORS DECOMPOSED FROM HIGHER-ORDER AMBISONICS AUDIO SIGNALS 有权
    编码方向由高级音乐会声音信号分解

    公开(公告)号：US20150332690A1

    公开(公告)日：2015-11-19

    申请号：US14712836

    申请日：2015-05-14

    Applicant: QUALCOMM Incorporated

    Inventor： Moo Young Kim ,  Nils Günther Peters ,  Dipanjan Sen

    IPC: G10L19/038

    CPC classification number: G10L19/038 ,  G10L19/008 ,  G10L2019/0001

    Abstract: In general, techniques are described for coding of vectors decomposed from higher order ambisonic coefficients. A device comprising a processor and a memory may perform the techniques. The processor may be configured to obtain from a bitstream data indicative of a plurality of weight values that represent a vector that is included in a decomposed version of the plurality of HOA coefficients. Each of the weight values may correspond to a respective one of a plurality of weights in a weighted sum of code vectors that represents the vector and that includes a set of code vectors. The processor may further be configured to reconstruct the vector based on the weight values and the code vectors. The memory may be configured to store the reconstructed vector.

    Abstract translation: 一般来说，描述了用于编码从高阶ambisonic系数分解的向量的技术。 包括处理器和存储器的设备可以执行这些技术。 处理器可以被配置为从比特流数据获得指示多个权重值，其表示包含在多个HOA系数的分解版本中的向量。 每个权重值可以对应于表示向量的代码矢量的加权和中的多个权重中的相应一个，并且包括一组代码矢量。 处理器还可以被配置为基于权重值和码矢量来重建矢量。 存储器可以被配置为存储重建的向量。

    OBTAINING SPARSENESS INFORMATION FOR HIGHER ORDER AMBISONIC AUDIO RENDERERS
    30.
    发明申请
    OBTAINING SPARSENESS INFORMATION FOR HIGHER ORDER AMBISONIC AUDIO RENDERERS 有权
    获得更高级别的AMBISONIC AUDIO RENDERERS的SPARSENESS信息

    公开(公告)号：US20150264484A1

    公开(公告)日：2015-09-17

    申请号：US14724560

    申请日：2015-05-28

    Applicant: QUALCOMM Incorporated

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

    IPC: H04R5/04

    CPC classification number: G10L19/008 ,  G10L19/167 ,  H04S3/008 ,  H04S3/02 ,  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 sparseness information indicative of a sparseness of a matrix used to render the higher order ambisonic coefficients to 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将更高阶的ambisonic系数渲染到多个扬声器馈送的矩阵的稀疏性的稀疏信息。 存储器可以被配置为存储稀疏信息。

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