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    BINAURALIZATION OF ROTATED HIGHER ORDER AMBISONICS
    111.
    发明申请
    BINAURALIZATION OF ROTATED HIGHER ORDER AMBISONICS 有权
    旋转高阶麻醉品的双重化

    公开(公告)号：US20140355766A1

    公开(公告)日：2014-12-04

    申请号：US14289602

    申请日：2014-05-28

    Applicant: QUALCOMM Incorporated

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

    IPC: H04S5/00

    CPC classification number: G10L19/008 ,  H04S7/30 ,  H04S7/304 ,  H04S2400/01 ,  H04S2420/01 ,  H04S2420/11

    Abstract: A device comprising one or more processors is configured to obtain transformation information, the transformation information describing how a sound field was transformed to reduce a number of a plurality of hierarchical elements to a reduced plurality of hierarchical elements; and perform binaural audio rendering with respect to the reduced plurality of hierarchical elements based on the transformation information.

    Abstract translation: 包括一个或多个处理器的设备被配置为获得变换信息，所述变换信息描述如何变换声场以将多个分层元素的数量减少到减少的多个分层元素; 并且基于变换信息对所减少的多个分层元素执行双耳音频呈现。

    SIGNALING AUDIO RENDERING INFORMATION IN A BITSTREAM
    112.
    发明申请
    SIGNALING AUDIO RENDERING INFORMATION IN A BITSTREAM 审中-公开
    信号在BITSTREAM中的音频渲染信息

    公开(公告)号：US20140226823A1

    公开(公告)日：2014-08-14

    申请号：US14174769

    申请日：2014-02-06

    Applicant: QUALCOMM Incorporated

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

    IPC: H04S5/00

    CPC classification number: H04S7/30 ,  G10L19/008 ,  G10L19/167 ,  H04S7/301 ,  H04S7/308 ,  H04S2420/03 ,  H04S2420/11

    Abstract: In general, techniques are described for specifying audio rendering information in a bitstream. A device configured to generate the bitstream may perform various aspects of the techniques. The bitstream generation device may comprise one or more processors configured to specify audio rendering information that includes a signal value identifying an audio renderer used when generating the multi-channel audio content. A device configured to render multi-channel audio content from a bitstream may also perform various aspects of the techniques. The rendering device may comprise one or more processors configured to determine audio rendering information that includes a signal value identifying an audio renderer used when generating the multi-channel audio content, and render a plurality of speaker feeds based on the audio rendering information.

    Abstract translation: 通常，描述了用于在比特流中指定音频呈现信息的技术。 被配置为生成比特流的设备可以执行该技术的各个方面。 比特流生成装置可以包括一个或多个处理器，其被配置为指定音频呈现信息，其包括识别当生成多声道音频内容时使用的音频渲染器的信号值。 被配置为从比特流呈现多声道音频内容的设备还可以执行该技术的各个方面。 渲染设备可以包括一个或多个处理器，其被配置为确定音频呈现信息，该音频呈现信息包括识别在生成多声道音频内容时使用的音频渲染器的信号值，以及基于该音频呈现信息呈现多个扬声器馈送。

    Spatial relation coding of higher order ambisonic coefficients
    115.
    发明授权
    Spatial relation coding of higher order ambisonic coefficients 有权

    公开(公告)号：US10972851B2

    公开(公告)日：2021-04-06

    申请号：US16152153

    申请日：2018-10-04

    Applicant: QUALCOMM Incorporated

    Inventor： Jeongook Song ,  Dipanjan Sen

    IPC: H04S5/00 ,  H04S3/00 ,  G10L19/008

    Abstract: In general, techniques are described by which to perform spatial relation coding of higher order ambisonic coefficients using expanded parameters. A device comprising a memory and a processor may perform the techniques. The memory may be configured to store at least a portion of a bitstream, the bitstream including a first indication representative of an HOA coefficient associated with the spherical basis function having an order of zero, and a second indication representative of one or more parameters. The processor may be configured to perform parameter expansion with respect to the one or more parameters to obtain one or more expanded parameters, and synthesize, based on the one or more expanded parameters and the HOA coefficient associated with the spherical basis function having the order of zero, one or more HOA coefficients associated with one or more spherical basis functions having an order greater than zero.

    Audio parallax for virtual reality, augmented reality, and mixed reality
    116.
    发明授权
    Audio parallax for virtual reality, augmented reality, and mixed reality 有权

    公开(公告)号：US10952009B2

    公开(公告)日：2021-03-16

    申请号：US16863626

    申请日：2020-04-30

    Applicant: QUALCOMM Incorporated

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

    IPC: H04S7/00 ,  H04S3/00 ,  A63F13/30 ,  G10L19/00 ,  G10L19/008 ,  H04R5/033

    Abstract: An example audio decoding device includes processing circuitry and a memory device coupled to the processing circuitry. The processing circuitry is configured to receive, in a bitstream, encoded representations of audio objects of a three-dimensional (3D) soundfield, to receive metadata associated with the bitstream, to obtain, from the received metadata, one or more transmission factors associated with one or more of the audio objects, and to apply the transmission factors to the one or more audio objects to obtain parallax-adjusted audio objects of the 3D soundfield. The memory device is configured to store at least a portion of the received bitstream, the received metadata, or the parallax-adjusted audio objects of the 3D soundfield.

    Interpolating audio streams
    117.
    发明授权
    Interpolating audio streams 有权

    公开(公告)号：US10924876B2

    公开(公告)日：2021-02-16

    申请号：US16513436

    申请日：2019-07-16

    Applicant: QUALCOMM Incorporated

    Inventor： Siddhartha Goutham Swaminathan ,  S M Akramus Salehin ,  Dipanjan Sen

    IPC: H04S7/00 ,  H04R1/40 ,  H04R3/00 ,  H04S3/00

    Abstract: In general, various aspects of the techniques are described for interpolating audio streams. A device comprising a memory and a processor may be configured to perform the techniques. The memory may store the one or more audio streams. The processor may obtain one or more microphone locations, each of the one or more microphone locations identifying a location of a respective one or more microphones that captured each of the corresponding one or more audio streams. The processor may also obtain a listener location identifying a location of a listener, and perform interpolation, based on the one or more microphone locations and the listener location, with respect to the audio streams to obtain an interpolated audio stream. The processor may next obtain, based on the interpolated audio stream, one or more speaker feeds, and output the one or more speaker feeds.

    Priority information for higher order ambisonic audio data
    120.
    发明授权
    Priority information for higher order ambisonic audio data 有权

    公开(公告)号：US10657974B2

    公开(公告)日：2020-05-19

    申请号：US16227880

    申请日：2018-12-20

    Applicant: QUALCOMM Incorporated

    Inventor： Moo Young Kim ,  Nils Günther Peters ,  Shankar Thagadur Shivappa ,  Dipanjan Sen

    IPC: G10L19/008 ,  H04S7/00 ,  G10L19/16 ,  H04S3/00

    Abstract: In general, techniques are described by which to provide priority information for higher order ambisonic (HOA) audio data. A device comprising a memory and a processor may perform the techniques. The memory stores HOA coefficients of the HOA audio data, the HOA coefficients representative of a soundfield. The processor may decompose the HOA coefficients into a sound component and a corresponding spatial component, the corresponding spatial component defining shape, width, and directions of the sound component, and the corresponding spatial component defined in a spherical harmonic domain. The processor may also determine, based on one or more of the sound component and the corresponding spatial component, priority information indicative of a priority of the sound component relative to other sound components of the soundfield, and specify, in a data object representative of a compressed version of the HOA audio data, the sound component and the priority information.

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