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公开(公告)号：US09883310B2
公开(公告)日：2018-01-30
申请号：US14724615
申请日：2015-05-28
Applicant: QUALCOMM Incorporated
Inventor： Nils Günther Peters , Dipanjan Sen , Martin James Morrell
IPC: H04S3/02 , H04S7/00 , G10L19/008
CPC classification number: H04S3/02 , G10L19/008 , 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 sign symmetry information indicative of sign symmetry of a matrix used to render the higher order ambisonic coefficients to generate a plurality of speaker feeds. The memory may be configured to store the sparseness information.
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公开(公告)号：US09685163B2
公开(公告)日：2017-06-20
申请号：US14192829
申请日：2014-02-27
Applicant: QUALCOMM Incorporated
Inventor： Dipanjan Sen , Martin James Morrell , Nils Günther Peters
IPC: G06F17/00 , G10L19/008 , G10L19/16
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.
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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
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.
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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
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。
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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。
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Patent Agency Ranking
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。
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7.发明申请公开(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。
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8.发明申请公开(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。
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公开(公告)号：US09959875B2
公开(公告)日：2018-05-01
申请号：US14192819
申请日：2014-02-27
Applicant: QUALCOMM Incorporated
Inventor： Dipanjan Sen , Martin James Morrell
IPC: G10L19/00 , G10L19/008 , G10L19/16 , G10L19/20 , G10L19/018
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.
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公开(公告)号：US09609452B2
公开(公告)日：2017-03-28
申请号：US14724560
申请日：2015-05-28
Applicant: QUALCOMM Incorporated
Inventor： Nils Günther Peters , Dipanjan Sen , Martin James Morrell
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.
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