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    NEAR FIELD COMPENSATION FOR DECOMPOSED REPRESENTATIONS OF A SOUND FIELD
    71.
    发明申请
    NEAR FIELD COMPENSATION FOR DECOMPOSED REPRESENTATIONS OF A SOUND FIELD 审中-公开
    声场的分解表示的近场补偿

    公开(公告)号：US20150127354A1

    公开(公告)日：2015-05-07

    申请号：US14505276

    申请日：2014-10-02

    Applicant: QUALCOMM Incorporated

    Inventor： Nils Günther Peters ,  Dipanjan Sen

    IPC: G10L19/008

    CPC classification number: G10L19/008 ,  H04S3/02 ,  H04S2420/11

    Abstract: In general, techniques are described for compressing higher order ambisonics (HOA) audio data. A device comprising one or more processors may be configured to perform the techniques. The one or more processors may be configured to obtain a plurality of spherical harmonic coefficients from a plurality of near field compensated spherical harmonic coefficients by, at least in part, counterbalancing application of a near field compensation filter to the plurality of spherical harmonic coefficients.

    Abstract translation: 一般来说，描述用于压缩高阶态（HOA）音频数据的技术。 包括一个或多个处理器的设备可以被配置为执行这些技术。 一个或多个处理器可以被配置为通过至少部分地将近场补偿滤波器的应用平衡到多个球谐函数系数，从多个近场补偿的球谐函数中获得多个球谐函数。

    SYSTEMS AND METHODS FOR FEATURE EXTRACTION
    72.
    发明申请
    SYSTEMS AND METHODS FOR FEATURE EXTRACTION 有权
    用于特征提取的系统和方法

    公开(公告)号：US20150006164A1

    公开(公告)日：2015-01-01

    申请号：US14314022

    申请日：2014-06-24

    Applicant: QUALCOMM Incorporated

    Inventor： Wenliang Lu ,  Dipanjan Sen

    IPC: G10L15/02

    CPC classification number: G10L15/02 ,  G10L25/00 ,  G10L25/69

    Abstract: A method for feature extraction by an electronic device is described. The method includes processing speech using a physiological cochlear model. The method also includes analyzing sections of an output of the physiological cochlear model. The method further includes extracting a place-based analysis vector and a time-based analysis vector for each section. The method additionally includes determining one or more features from each analysis vector.

    Abstract translation: 描述了一种通过电子设备进行特征提取的方法。 该方法包括使用生理学耳蜗模型处理语音。 该方法还包括分析生理学耳蜗模型的输出的部分。 该方法还包括提取每个部分的基于位置的分析向量和基于时间的分析向量。 该方法另外包括从每个分析向量确定一个或多个特征。

    PERFORMING SPATIAL MASKING WITH RESPECT TO SPHERICAL HARMONIC COEFFICIENTS
    75.
    发明申请
    PERFORMING SPATIAL MASKING WITH RESPECT TO SPHERICAL HARMONIC COEFFICIENTS 有权
    相对于球形谐波系数进行空间遮蔽

    公开(公告)号：US20140355768A1

    公开(公告)日：2014-12-04

    申请号：US14288219

    申请日：2014-05-27

    Applicant: QUALCOMM Incorporated

    Inventor： Dipanjan Sen ,  Martin James Morrell

    IPC: G10L19/008

    CPC classification number: G10L19/008 ,  G10L19/0212

    Abstract: In general, techniques are described by which to perform spatial masking with respect to spherical harmonic coefficients. As one example, an audio encoding device comprising a processor may perform various aspects of the techniques. The processor may be configured to perform spatial analysis based on the spherical harmonic coefficients describing a three-dimensional sound field to identify a spatial masking threshold. The processor may further be configured to render the multi-channel audio data from the plurality of spherical harmonic coefficients, and compress the multi-channel audio data based on the identified spatial masking threshold to generate a bitstream.

    Abstract translation: 通常，描述关于球面谐波系数执行空间掩蔽的技术。 作为一个示例，包括处理器的音频编码设备可以执行该技术的各个方面。 处理器可以被配置为基于描述三维声场的球谐函数来执行空间分析以识别空间掩蔽阈值。 处理器还可以被配置为从多个球谐函数渲染多声道音频数据，并且基于所识别的空间掩蔽阈值来压缩多声道音频数据以生成比特流。

    Reordering Of Audio Objects In The Ambisonics Domain
    77.
    发明申请
    Reordering Of Audio Objects In The Ambisonics Domain 有权

    公开(公告)号：US20220030372A1

    公开(公告)日：2022-01-27

    申请号：US17498707

    申请日：2021-10-11

    Applicant: QUALCOMM Incorporated

    Inventor： Dipanjan Sen ,  Sang-Uk Ryu

    IPC: H04S7/00

    Abstract: In general, disclosed is a device that includes one or more processors, coupled to the memory, configured to perform an energy analysis with respect to one or more audio objects, in the ambisonics domain, in the first time segment. The one or more processors are also configured to perform a similarity measure between the one or more audio objects, in the ambisonics domain, in the first time segment, and the one or more audio objects, in the ambisonics domain, in the second time segment. In addition, the one or more processors are configured to perform a reorder of the one or more audio objects, in the ambisonics domain, in the first time segment with the one or more audio objects, in the ambisonics domain, in the second time segment, to generate one or more reordered audio objects in the first time segment.

    Selecting audio streams based on motion
    78.
    发明授权
    Selecting audio streams based on motion 有权

    公开(公告)号：US11089428B2

    公开(公告)日：2021-08-10

    申请号：US16714150

    申请日：2019-12-13

    Applicant: QUALCOMM Incorporated

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

    IPC: H04S7/00 ,  H04S3/00 ,  H04R5/04 ,  H04R5/033

    Abstract: In general, various aspects of the techniques are described for selecting audio streams based on motion. A device comprising a processor and a memory may be configured to perform the techniques. The processor may be configured to obtain a current location of the device, and obtain capture locations. Each of the capture locations may identify a location at which a respective one of audio streams is captured. The processor may also be configured to select, based on the current location and the capture locations, a subset of the audio streams, where the subset of the audio streams have less audio streams than the audio streams. The processor may further be configured to reproduce, based on the subset of the audio streams, a soundfield. The memory may be configured to store the subset of the plurality of audio streams.

    SELECTING AUDIO STREAMS BASED ON MOTION
    79.
    发明申请
    SELECTING AUDIO STREAMS BASED ON MOTION 有权

    公开(公告)号：US20210185470A1

    公开(公告)日：2021-06-17

    申请号：US16714150

    申请日：2019-12-13

    Applicant: QUALCOMM Incorporated

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

    IPC: H04S7/00 ,  H04S3/00 ,  H04R5/033 ,  H04R5/04

    Abstract: In general, various aspects of the techniques are described for selecting audio streams based on motion. A device comprising a processor and a memory may be configured to perform the techniques. The processor may be configured to obtain a current location of the device, and obtain capture locations. Each of the capture locations may identify a location at which a respective one of audio streams is captured. The processor may also be configured to select, based on the current location and the capture locations, a subset of the audio streams, where the subset of the audio streams have less audio streams than the audio streams. The processor may further be configured to reproduce, based on the subset of the audio streams, a soundfield. The memory may be configured to store the subset of the plurality of audio streams.

    Spatial relation coding using virtual higher order ambisonic coefficients
    80.
    发明授权
    Spatial relation coding using virtual higher order ambisonic coefficients 有权

    公开(公告)号：US10986456B2

    公开(公告)日：2021-04-20

    申请号：US16152130

    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 using virtual higher order ambisonic coefficients. A device comprising a memory and a processor may perform the techniques. The memory may be configured to store audio data, the audio data representative of zero-ordered higher order ambisonic (HOA) coefficient, and one or more greater-than-zero-ordered HOA coefficients. The processor may be configured to obtain, based on the one or more greater-than-zero-ordered HOA coefficients, a virtual zero-ordered HOA coefficient. The processor may also be configured to obtain, based on the virtual HOA coefficient, one or more parameters from which to synthesize the one or more greater-than-zero-ordered HOA coefficients. The processor may further be configured to generate a bitstream that includes a first indication representative of the zero-ordered HOA coefficients, and a second indication representative of the one or more parameters.

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