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。

公开(公告)号：US20140355769A1

公开(公告)日：2014-12-04

申请号：US14289323

申请日：2014-05-28

Applicant: QUALCOMM Incorporated

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

IPC: G10L19/008 ,  G10L19/032 ,  G06F17/16 ,  H04S3/00

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 a vector-based synthesis with respect to higher order ambisonic coefficients (or, in other words, spherical harmonic coefficients). A device comprising a processor may be configured to perform the techniques. The processor may perform the vector-based synthesis with respect to spherical harmonic coefficients to generate decomposed representations of the plurality of spherical harmonic coefficients and determine distinct and background directional information from the directional information. The processor may then reduce an order of the directional information associated with the background audio objects to generate transformed background directional information, and apply compensation to increase values of the transformed directional information to preserve an overall energy of the sound field.

Abstract translation: 通常，描述了相对于较高阶的Ambisonic系数（或换句话说，球面谐波系数）执行基于矢量的合成的技术。 包括处理器的设备可以被配置为执行技术。 处理器可以执行关于球谐函数的基于矢量的合成，以产生多个球谐函数的分解表示，并根据方向信息确定不同的和背景的方向信息。 然后，处理器可以减少与背景音频对象相关联的方向信息的顺序，以产生经变换的背景方向信息，并且应用补偿来增加变换的方向信息的值以保持声场的整体能量。

公开(公告)号：US20140249827A1

公开(公告)日：2014-09-04

申请号：US14192819

申请日：2014-02-27

Applicant: QUALCOMM Incorporated

Inventor： Dipanjan Sen ,  Martin James Morrell

IPC: G10L19/008

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

Abstract: In general, techniques are described for specifying spherical harmonic coefficients in a bitstream. A device comprising one or more processors may perform the techniques. The processors may be configured to identify, from the bitstream, a plurality of hierarchical elements describing a sound field that are included in the bitstream. The processors may further be configured to parse the bitstream to determine the identified plurality of hierarchical elements.

Abstract translation: 通常，描述用于指定比特流中的球谐函数的技术。 包括一个或多个处理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中识别描述包括在比特流中的声场的多个分层元素。 处理器还可以被配置为解析比特流以确定所识别的多个分层元素。

公开(公告)号：US20140247946A1

公开(公告)日：2014-09-04

申请号：US14192829

申请日：2014-02-27

Applicant: QUALCOMM Incorporated

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

IPC: G10L19/008

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.

Abstract translation: 一般来说，描述了用于转换球谐函数的技术。 包括一个或多个处理器的设备可以执行这些技术。 处理器可以被配置为解析比特流以确定描述声场如何被​​变换的变换信息，以减少提供与描述声场有关的信息的多个分层元素的数量。 处理器还可以被配置为当基于提供与描述声场相关的信息的多个分层元素中的那些再现声场时，基于变换信息来转换声场，以反转执行的变换以减少数字 的多个分层元素。

公开(公告)号：US20140219455A1

公开(公告)日：2014-08-07

申请号：US14174775

申请日：2014-02-06

Applicant: QUALCOMM Incorporated

Inventor： Nils Günther Peters ,  Martin James Morrell

IPC: H04S5/00

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

Abstract: In general, techniques are described for mapping virtual speakers to physical speakers, having first adjusted the position of one of the virtual speakers based on a relative position of the one of the virtual speakers to one of the physical speakers. A device comprising one or more processors may perform the techniques. The one or more processors may be configured to determine a difference in position between one of a plurality of physical speakers and one of a plurality of virtual speakers arranged in a geometry, and adjust a position of the one of the plurality of virtual speakers within the geometry based on the determined difference in position and prior to mapping the plurality of virtual speakers to the plurality of physical speakers.

Abstract translation: 通常，描述了将虚拟扬声器映射到物理扬声器的技术，其首先基于虚拟扬声器之一相对于物理扬声器之一的相对位置来调整虚拟扬声器之一的位置。 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多个物理扬声器中的一个和布置在几何中的多个虚拟扬声器中的一个之间的位置的差异，并且将多个虚拟扬声器中的一个虚拟扬声器的位置调整在 基于确定的位置差异以及在将多个虚拟扬声器映射到多个物理扬声器之前的几何形状。

公开(公告)号：US09940937B2

公开(公告)日：2018-04-10

申请号：US14878948

申请日：2015-10-08

Applicant: QUALCOMM Incorporated

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

IPC: G10L19/008 ,  G10L19/032 ,  H04S3/00 ,  H04S7/00

CPC classification number: G10L19/008 ,  G10L19/032 ,  H04S3/008 ,  H04S7/301 ,  H04S7/302 ,  H04S2420/11

Abstract: This disclosure describes techniques for coding of higher-order ambisonics audio data comprising at least one higher-order ambisonic (HOA) coefficient corresponding to a spherical harmonic basis function having an order greater than one. This disclosure describes techniques for adjusting HOA soundfields to potentially improve spatial alignment of the acoustic elements to the visual component in a mixed audio/video reproduction scenario. In one example, a device for rendering an HOA audio signal includes one or more processors configured to render the HOA audio signal over one or more speakers based on one or more field of view (FOV) parameters of a reference screen and one or more FOV parameters of a viewing window.

公开(公告)号：US09913064B2

公开(公告)日：2018-03-06

申请号：US14174775

申请日：2014-02-06

Applicant: QUALCOMM Incorporated

Inventor： Nils Günther Peters ,  Martin James Morrell

IPC: H04S5/00 ,  H04S7/00

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

Abstract: In general, techniques are described for mapping virtual speakers to physical speakers, having first adjusted the position of one of the virtual speakers based on a relative position of the one of the virtual speakers to one of the physical speakers. A device comprising one or more processors may perform the techniques. The one or more processors may be configured to determine a difference in position between one of a plurality of physical speakers and one of a plurality of virtual speakers arranged in a geometry, and adjust a position of the one of the plurality of virtual speakers within the geometry based on the determined difference in position and prior to mapping the plurality of virtual speakers to the plurality of physical speakers.

公开(公告)号：US20170200452A1

公开(公告)日：2017-07-13

申请号：US15451087

申请日：2017-03-06

Applicant: QUALCOMM Incorporated

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

IPC: G10L19/008 ,  H04S7/00 ,  H04S3/00 ,  H04S3/02 ,  G10L19/16

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.

公开(公告)号：US20170110139A1

公开(公告)日：2017-04-20

申请号：US15290223

申请日：2016-10-11

Applicant: QUALCOMM Incorporated

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

IPC: G10L19/20 ,  G06F3/16 ,  H04N5/60 ,  H04S7/00

CPC classification number: H04N5/602 ,  G06F3/165 ,  G10L19/008 ,  G10L19/26 ,  H04R2499/15 ,  H04S7/30 ,  H04S7/307 ,  H04S7/308 ,  H04S2420/11

Abstract: Systems and techniques for rendering audio data are generally disclosed. An example device for rendering a higher order ambition (HOA) audio signal includes a memory configured to store the HOA audio signal, and one or more processors coupled to the memory. The one or more processors are configured to perform a loudness compensation process as part of generating an effect matrix. The one or more processors are further configured to render the HOA audio signal based on the effect matrix.

公开(公告)号：US09412385B2

公开(公告)日：2016-08-09

申请号：US14288219

申请日：2014-05-27

Applicant: QUALCOMM Incorporated

Inventor： Dipanjan Sen ,  Martin James Morrell

IPC: G10L19/008 ,  H04R5/00 ,  G10L19/02

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。