公开(公告)号：US09674632B2

公开(公告)日：2017-06-06

申请号：US14288293

申请日：2014-05-27

Applicant: QUALCOMM Incorporated

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

IPC: H04S7/00 ,  H04S5/00 ,  G10K15/12 ,  G10L19/008 ,  H04S1/00 ,  H04S3/00

CPC classification number: H04S7/305 ,  G10K15/12 ,  G10L19/008 ,  H04S1/002 ,  H04S1/005 ,  H04S3/004 ,  H04S5/00 ,  H04S7/306 ,  H04S7/307 ,  H04S2400/01 ,  H04S2420/01 ,  H04S2420/07 ,  H04S2420/11

Abstract: A device comprising one or more processors is configured to determine a plurality of segments for each of a plurality of binaural room impulse response filters, wherein each of the plurality of binaural room impulse response filters comprises a residual room response segment and at least one direction-dependent segment for which a filter response depends on a location within a sound field; transform each of at least one direction-dependent segment of the plurality of binaural room impulse response filters to a domain corresponding to a domain of a plurality of hierarchical elements to generate a plurality of transformed binaural room impulse response filters, wherein the plurality of hierarchical elements describe a sound field; and perform a fast convolution of the plurality of transformed binaural room impulse response filters and the plurality of hierarchical elements to render the sound field.

公开(公告)号：US09420393B2

公开(公告)日：2016-08-16

申请号：US14288276

申请日：2014-05-27

Applicant: QUALCOMM Incorporated

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

IPC: H04S7/00 ,  G10L19/008 ,  H04S5/00 ,  G10K15/12 ,  H04S1/00 ,  H04S3/00

CPC classification number: H04S7/305 ,  G10K15/12 ,  G10L19/008 ,  H04S1/002 ,  H04S1/005 ,  H04S3/004 ,  H04S5/00 ,  H04S7/306 ,  H04S7/307 ,  H04S2400/01 ,  H04S2420/01 ,  H04S2420/07 ,  H04S2420/11

Abstract: A device comprises one or more processors configured to apply a binaural room impulse response filter to spherical harmonic coefficients representative of a sound field in three dimensions so as to render the sound field.

Abstract translation: 一种装置包括一个或多个处理器，其被配置为对三声道的声场施加双耳室脉冲响应滤波器，以便呈现声场。

公开(公告)号：US09384741B2

公开(公告)日：2016-07-05

申请号：US14289602

申请日：2014-05-28

Applicant: QUALCOMM Incorporated

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

IPC: H04R5/00 ,  G10L19/008 ,  H04S7/00

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。

公开(公告)号：US20150243292A1

公开(公告)日：2015-08-27

申请号：US14630165

申请日：2015-02-24

Applicant: QUALCOMM Incorporated

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

IPC: G10L19/008 ,  G10L19/02

CPC classification number: G10L19/008 ,  G10L19/0204 ,  G10L19/167

Abstract: In general, techniques are described for signaling an order format for higher-order ambisonic audio data. An audio decoding device including a memory and a processor may perform the techniques. The memory may be configured to store a bitstream indicative of a coded higher-order ambisonic (HOA) audio signal. The processor may be configured to obtain, from the bitstream, a harmonic coefficient ordering format indicator indicative of a symmetric harmonic coefficient ordering format for a source set of HOA coefficients from which the coded HOA audio signal is generated. The processor may further be configured to decode the coded HOA audio signal based on the symmetric harmonic coefficient ordering format indicator.

Abstract translation: 一般来说，描述了用于发信号通知用于较高阶的Ambisonic音频数据的订单格式的技术。 包括存储器和处理器的音频解码装置可以执行这些技术。 存储器可以被配置为存储指示经编码的高阶ambisonic（HOA）音频信号的比特流。 处理器可以被配置为从比特流获得指示用于生成编码的HOA音频信号的HOA系数的源组的对称谐波系数排序格式的谐波系数排序格式指示符。 处理器还可以被配置为基于对称谐波系数排序格式指示符对编码的HOA音频信号进行解码。

公开(公告)号：US20140358558A1

公开(公告)日：2014-12-04

申请号：US14289174

申请日：2014-05-28

Applicant: QUALCOMM Incorporated

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

IPC: G10L19/008

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 an indication of whether spherical harmonic coefficients are representative of a synthetic audio object. In accordance with the techniques, a device comprising one or more processors may be configured to obtain an indication of whether spherical harmonic coefficients representative of a sound field are generated from a synthetic audio object.

Abstract translation: 通常，描述用于获得球面谐波系数是否代表合成音频对象的指示的技术。 根据这些技术，包括一个或多个处理器的装置可以被配置为获得是否从合成音频对象产生表示声场的球面谐波系数的指示。

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。

公开(公告)号：US10070094B2

公开(公告)日：2018-09-04

申请号：US15290223

申请日：2016-10-11

Applicant: QUALCOMM Incorporated

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

IPC: H04R5/02 ,  H04N5/60 ,  H04S7/00 ,  G06F3/16 ,  G10L19/26 ,  G10L19/008

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：US09736609B2

公开(公告)日：2017-08-15

申请号：US14174784

申请日：2014-02-06

Applicant: QUALCOMM Incorporated

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

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 determining renderers used for rendering spherical harmonic coefficients to generate one or more loudspeaker signals. A device comprising one or more processors may perform the techniques. The one or more processors may be configured to determine a local speaker geometry of one or more speakers used for playback of spherical harmonic coefficients representative of a sound field, and configure the device to operate based on the local speaker geometry.

公开(公告)号：US09736606B2

公开(公告)日：2017-08-15

申请号：US14670074

申请日：2015-03-26

Applicant: QUALCOMM Incorporated

Inventor： Martin James Morrell ,  Pei Xiang ,  Richard Paul Walters ,  Nils Günther Peters ,  Dipanjan Sen

IPC: H04S3/00 ,  G10L19/008 ,  G11B20/10 ,  H04H20/89 ,  H04N21/439 ,  H04N21/233 ,  G06F3/0484 ,  G11B27/031

CPC classification number: H04S3/008 ,  G06F3/04842 ,  G10L19/008 ,  G11B20/10527 ,  G11B27/031 ,  H04H20/89 ,  H04N21/233 ,  H04N21/4392 ,  H04N21/4398

Abstract: In general, techniques are described for audio editing of higher-order ambisonic audio data. A device comprising a memory and one or more processors may be configured to perform the techniques. The memory may be configured to store a higher order ambisonic (HOA) representation of the audio object. The one or more processors may be configured to add a source tail to the HOA representation of the audio object by storing one or more spherical harmonic (SH) basis functions associated with the audio object to a buffer.

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。