公开(公告)号：US20140358565A1

公开(公告)日：2014-12-04

申请号：US14289588

申请日：2014-05-28

Applicant: QUALCOMM Incorporated

Inventor： Nils Günther Peters ,  Dipanjan Sen

IPC: G10L19/038

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 decomposed versions of spherical harmonic coefficients. A device comprising one or more processors may be configured to perform the techniques, whereby the processors may be configured to obtain, from a bitstream, at least one of one or more vectors decomposed from spherical harmonic coefficients that were recombined with background spherical harmonic coefficients, wherein the spherical harmonic coefficients describe a sound field, and wherein the background spherical harmonic coefficients described one or more background components of the same sound field.

Abstract translation: 通常，描述了用于获得球谐函数的分解版本的技术。 包括一个或多个处理器的设备可以被配置为执行技术，由此处理器可以被配置为从比特流获得从与背景球谐函数重新组合的球谐函数分解的一个或多个向量中的至少一个， 其中所述球谐函数描述声场，并且其中所述背景球谐调系数描述了相同声场的一个或多个背景分量。

公开(公告)号：US20140358564A1

公开(公告)日：2014-12-04

申请号：US14289539

申请日：2014-05-28

Applicant: QUALCOMM INCORPORATED

Inventor： Dipanjan Sen ,  Nils Günther Peters

IPC: G10L19/038

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 performing an interpolation with respect to decomposed versions of a sound field. A device comprising one or more processors may be configured to perform the techniques. The processors may be configured to obtain decomposed interpolated spherical harmonic coefficients for a time segment by, at least in part, performing an interpolation with respect to a first decomposition of a first plurality of spherical harmonic coefficients and a second decomposition of a second plurality of spherical harmonic coefficients.

Abstract translation: 通常，描述了相对于声场的分解版本执行内插的技术。 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。 处理器可以被配置为通过至少部分地针对第一多个球谐函数的第一分解和第二多个球面谐波系数的第二分解来执行针对时间段的分解内插球谐函数 谐波系数。

公开(公告)号：US20140358563A1

公开(公告)日：2014-12-04

申请号：US14289522

申请日：2014-05-28

Applicant: QUALCOMM Incorporated

Inventor： Dipanjan Sen ,  Sang-Uk Ryu

IPC: G10L19/02 ,  G10L19/002

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 compressing decomposed representations of a sound field. 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 bitstream comprising a compressed version of a spatial component of a sound field, the spatial component generated by performing a vector based synthesis with respect to a plurality of spherical harmonic coefficients.

Abstract translation: 通常，描述了用于压缩声场的分解表示的技术。 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获得包括声场的空间分量的压缩版本的比特流，所述空间分量是通过相对于多个球谐函数执行基于矢量的合成而产生的。

公开(公告)号：US20140358560A1

公开(公告)日：2014-12-04

申请号：US14289396

申请日：2014-05-28

Applicant: QUALCOMM Incorporated

Inventor： Dipanjan Sen ,  Nils Günther Peters

IPC: G10L19/02 ,  G10L19/002

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 performing order reduction with respect to a plurality of spherical harmonic coefficients. In accordance with the techniques, a device comprising one or more processors may be configured to perform, based on a target bitrate, order reduction with respect to a plurality of spherical harmonic coefficients or decompositions thereof to generate reduced spherical harmonic coefficients or the reduced decompositions thereof, wherein the plurality of spherical harmonic coefficients represent a sound field.

Abstract translation: 通常，描述了相对于多个球谐函数执行顺序降低的技术。 根据这些技术，包括一个或多个处理器的设备可以被配置为基于目标比特率执行关于多个球谐函数或其分解的顺序减少以产生减小的球谐函数或其减少的分解 ，其中所述多个球谐函数表示声场。

公开(公告)号：US20140358557A1

公开(公告)日：2014-12-04

申请号：US14288320

申请日：2014-05-27

Applicant: QUALCOMM Incorporated

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

IPC: G10L19/02

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

Abstract: In general, techniques are described for performing a positional analysis to code audio data. Typically, this audio data comprises a hierarchical representation of a soundfield and may include, as one example, spherical harmonic coefficients (which may also be referred to as higher-order ambisonic coefficients). An audio compression device that includes one or more processors may perform the techniques. The processors may be configured to allocate bits to one or more portions of the audio data, at least in part by performing positional analysis on the audio data.

Abstract translation: 通常，描述了用于执行位置分析以编码音频数据的技术。 通常，该音频数据包括声场的分级表示，并且可以包括球谐函数（其也可以被称为高阶ambisonic系数）作为一个示例。 包括一个或多个处理器的音频压缩设备可以执行这些技术。 处理器可以被配置为至少部分地通过对音频数据执行位置分析来将比特分配给音频数据的一个或多个部分。

公开(公告)号：US20140025386A1

公开(公告)日：2014-01-23

申请号：US13844283

申请日：2013-03-15

Applicant: QUALCOMM INCORPORATED

Inventor： Pei Xiang ,  Dipanjan Sen

IPC: G10L19/00

CPC classification number: G10L19/00 ,  G10L19/008

Abstract: Systems, methods, and apparatus for grouping audio objects into clusters are described.

Abstract translation: 描述了将音频对象分组成簇的系统，方法和装置。

公开(公告)号：US20140023196A1

公开(公告)日：2014-01-23

申请号：US13945806

申请日：2013-07-18

Applicant: QUALCOMM Incorporated

Inventor： Pei Xiang ,  Dipanjan Sen

IPC: H04S1/00

CPC classification number: H04S1/007 ,  G10L19/008 ,  G10L19/22 ,  G10L19/24 ,  H04S3/008 ,  H04S7/30 ,  H04S2400/03 ,  H04S2400/11 ,  H04S2400/15 ,  H04S2420/03 ,  H04S2420/11

Abstract: In general, techniques are described for grouping audio objects into clusters. In some examples, a device for audio signal processing comprises a cluster analysis module configured to group, based on spatial information for each of N audio objects, a plurality of audio objects that includes the N audio objects into L clusters, where L is less than N, wherein the cluster analysis module is configured to receive information from at least one of a transmission channel, a decoder, and a renderer, and wherein a maximum value for L is based on the information received. The device also comprises a downmix module configured to mix the plurality of audio objects into L audio streams, and a metadata downmix module configured to produce, based on the spatial information and the grouping, metadata that indicates spatial information for each of the L audio streams.

Abstract translation: 一般来说，描述了将音频对象分组成簇的技术。 在一些示例中，用于音频信号处理的设备包括：集群分析模块，被配置为基于N个音频对象中的每一个的空间信息将包括N个音频对象的多个音频对象分组为L个集群，其中L小于 N，其中所述聚类分析模块被配置为从传输信道，解码器和渲染器中的至少一个接收信息，并且其中L的最大值基于所接收的信息。 所述设备还包括被配置为将所述多个音频对象混合成L个音频流的下混模块，以及被配置为基于所述空间信息和所述分组来产生指示每个所述L个音频流的空间信息的元数据的元数据下混模块 。