公开(公告)号：US09622010B2

公开(公告)日：2017-04-11

申请号：US14420890

申请日：2013-08-26

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： S. Spencer Hooks ,  Joshua Brandon Lando ,  Sripal S. Mehta ,  Matthew Fellers ,  Stewart Murrie ,  Brad Basler

IPC: H04R27/00 ,  H04S7/00 ,  H04R1/40

CPC classification number: H04S7/30 ,  H04R1/40 ,  H04R1/403 ,  H04R2205/022 ,  H04S7/301

Abstract: Embodiments are directed to an interconnect for coupling components in an object-based rendering system comprising: a first network channel coupling a renderer to an array of individually addressable drivers projecting sound in a listening environment and transmitting audio signals and control data from the renderer to the array, and a second network channel coupling a microphone placed in the listening environment to a calibration component of the renderer and transmitting calibration control signals for acoustic information generated by the microphone to the calibration component. The interconnect is suitable for use in a system for rendering spatial audio content comprising channel-based and object-based audio components.

公开(公告)号：US09489956B2

公开(公告)日：2016-11-08

申请号：US14767565

申请日：2014-01-22

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Matthew Fellers ,  Vinay Melkote ,  Kuan-Chieh Yen ,  Grant A. Davidson ,  Mark F. Davis

IPC: G10L19/008 ,  G10L19/02 ,  G10L19/012 ,  G10L25/06 ,  G10L25/18

CPC classification number: G10L19/008 ,  G10L19/012 ,  G10L19/0204 ,  G10L25/06 ,  G10L25/18

Abstract: Received audio data may include a first set of frequency coefficients and a second set of frequency coefficients. Spatial parameters for at least part of the second set of frequency coefficients may be estimated, based at least in part on the first set of frequency coefficients. The estimated spatial parameters may be applied to the second set of frequency coefficients to generate a modified second set of frequency coefficients. The first set of frequency coefficients may correspond to a first frequency range (for example, an individual channel frequency range) and the second set of frequency coefficients may correspond to a second frequency range (for example, a coupled channel frequency range). Combined frequency coefficients of a composite coupling channel may be based on frequency coefficients of two or more channels. Cross-correlation coefficients, between frequency coefficients of a first channel and the combined frequency coefficients, may be computed.

Abstract translation: 接收的音频数据可以包括第一组频率系数和第二组频率系数。 可以至少部分地基于第一组频率系数来估计第二组频率系数的至少一部分的空间参数。 估计的空间参数可以应用于第二组频率系数，以产生经修改的第二组频率系数。 第一组频率系数可以对应于第一频率范围（例如，单个信道频率范围），并且第二组频率系数可以对应于第二频率范围（例如，耦合的信道频率范围）。 复合耦合信道的组合频率系数可以基于两个或更多个信道的频率系数。 可以计算第一通道的频率系数与组合频率系数之间的互相关系数。

公开(公告)号：US20150208190A1

公开(公告)日：2015-07-23

申请号：US14420890

申请日：2013-08-26

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Spencer S. Hooks ,  Joshua Brandon Lando ,  Sripal S. Mehta ,  Matthew Fellers ,  Stewart Murrie ,  Brad Basler

IPC: H04S7/00 ,  H04R1/40

CPC classification number: H04S7/30 ,  H04R1/40 ,  H04R1/403 ,  H04R2205/022 ,  H04S7/301

Abstract: Embodiments are directed to an interconnect for coupling components in an object-based rendering system comprising: a first network channel coupling a renderer to an array of individually addressable drivers projecting sound in a listening environment and transmitting audio signals and control data from the renderer to the array, and a second network channel coupling a microphone placed in the listening environment to a calibration component of the renderer and transmitting calibration control signals for acoustic information generated by the microphone to the calibration component. The interconnect is suitable for use in a system for rendering spatial audio content comprising channel-based and object-based audio components.

Abstract translation: 实施例涉及用于在基于对象的呈现系统中耦合组件的互连，包括：将呈现器耦合到独立可寻址驱动器的阵列的第一网络通道，其在收听环境中投射声音并将音频信号和控制数据从渲染器传输到 阵列，以及将放置在听音环境中的麦克风耦合到渲染器的校准部件的第二网络通道，并将用于由麦克风产生的声学信息的校准控制信号传送到校准部件。 互连适用于用于渲染包括基于频道和基于对象的音频组件的空间音频内容的系统。

公开(公告)号：US10142761B2

公开(公告)日：2018-11-27

申请号：US15123934

申请日：2015-03-04

Applicant: Dolby Laboratories Licensing Corporation

Inventor： C. Phillip Brown ,  Matthew Fellers ,  Regunathan Radhakrishnan

IPC: H04S7/00 ,  H04S1/00

Abstract: A method for creating a head-related impulse response (HRIR) for use in rendering audio for playback through headphones comprises receiving location parameters for a sound including azimuth, elevation, and range relative to a head of a listener, applying a spherical head model to the azimuth, elevation, and range input parameters to generate binaural HRIR values, computing a pinna model using the azimuth and elevation parameters to apply to the binaural HRIR values to pinna modeled HRIR values, computing a torso model using the azimuth and elevation parameters to apply to the pinna modeled HRIR values to generate pinna and torso modeled HRIR values, and computing a near-field model using the azimuth and range parameters to apply to the pinna and torso modeled HRIR values to generate pinna, torso and near-field modeled HRIR values.

公开(公告)号：US09830916B2

公开(公告)日：2017-11-28

申请号：US14766371

申请日：2014-01-22

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Vinay Melkote ,  Kuan-Chieh Yen ,  Grant A. Davidson ,  Matthew Fellers ,  Mark S. Vinton ,  Vivek Kumar

IPC: G10L19/008 ,  G10L19/02 ,  H04S3/00 ,  H04S5/00 ,  H04L19/00 ,  H04L25/06 ,  G10L19/06 ,  G10L25/06

CPC classification number: G10L19/008 ,  G10L19/02 ,  G10L19/06 ,  G10L25/06 ,  H04S3/008 ,  H04S5/00

Abstract: Audio processing methods may involve receiving audio data corresponding to a plurality of audio channels. The audio data may include a frequency domain representation corresponding to filterbank coefficients of an audio encoding or processing system. A decorrelation process may be performed with the same filterbank coefficients used by the audio encoding or processing system. The decorrelation process may be performed without converting coefficients of the frequency domain representation to another frequency domain or time domain representation. The decorrelation process may involve selective or signal-adaptive decorrelation of specific channels and/or specific frequency bands. The decorrelation process may involve applying a decorrelation filter to a portion of the received audio data to produce filtered audio data. The decorrelation process may involve using a non-hierarchal mixer to combine a direct portion of the received audio data with the filtered audio data according to spatial parameters.

公开(公告)号：US09754596B2

公开(公告)日：2017-09-05

申请号：US14767279

申请日：2014-01-22

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Kuan-Chieh Yen ,  Vinay Melkote ,  Matthew Fellers ,  Grant A. Davidson

IPC: H04S5/00 ,  H04S3/00 ,  G10L19/008

CPC classification number: G10L19/008 ,  H04S3/008 ,  H04S5/00 ,  H04S2400/03 ,  H04S2420/03 ,  H04S2420/07

Abstract: Audio characteristics of audio data corresponding to a plurality of audio channels may be determined. The audio characteristics may include spatial parameter data. Decorrelation filtering processes for the audio data may be based, at least in part, on the audio characteristics. The decorrelation filtering processes may cause a specific inter-decorrelation signal coherence (“IDC”) between channel-specific decorrelation signals for at least one pair of channels. The channel-specific decorrelation signals may be received and/or determined. Inter-channel coherence (“ICC”) between a plurality of audio channel pairs may be controlled. Controlling ICC may involve at receiving an ICC value and/or determining an ICC value based, at least partially, on the spatial parameter data. A set of IDC values may be based, at least partially, on the set of ICC values. A set of channel-specific decorrelation signals, corresponding with the set of IDC values, may be synthesized by performing operations on the filtered audio data.

公开(公告)号：US09532158B2

公开(公告)日：2016-12-27

申请号：US14417680

申请日：2013-08-26

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Joshua Brandon Lando ,  Matthew Fellers

IPC: H04R5/00 ,  H04S5/00 ,  H04S7/00

CPC classification number: H04S5/005 ,  H04S7/30 ,  H04S7/301 ,  H04S7/305 ,  H04S2400/01 ,  H04S2400/11 ,  H04S2420/01 ,  H04S2420/07

Abstract: Embodiments are described for a system of rendering spatial audio content in a listening environment. The system includes a rendering component configured to generate a plurality of audio channels including information specifying a playback location in a listening area, an upmixer component receiving the plurality of audio channels and generating, for each audio channel, at least one reflected sub-channel configured to cause a majority of driver energy to reflect off of one or more surfaces of the listening area, and at least one direct sub-channel configured to cause a majority of driver energy to propagate directly to the playback location.

Abstract translation: 描述了在听音环境中渲染空间音频内容的系统的实施例。 该系统包括：渲染组件，被配置为生成多个音频通道，包括指定收听区域中的回放位置的信息，上混合器组件接收多个音频通道，并为每个音频通道生成至少一个反射子通道， 使得大部分驾驶员能量反射出收听区域的一个或多个表面，以及至少一个直接子通道，其被配置为使大多数驾驶员能量直接传播到播放位置。

公开(公告)号：US20150271620A1

公开(公告)日：2015-09-24

申请号：US14417680

申请日：2013-08-26

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Joshua Brandon Lando ,  Matthew Fellers

IPC: H04S5/00 ,  H04S7/00

CPC classification number: H04S5/005 ,  H04S7/30 ,  H04S7/301 ,  H04S7/305 ,  H04S2400/01 ,  H04S2400/11 ,  H04S2420/01 ,  H04S2420/07

Abstract: Embodiments are described for a system of rendering spatial audio content in a listening environment. The system includes a rendering component configured to generate a plurality of audio channels including information specifying a playback location in a listening area, an upmixer component receiving the plurality of audio channels and generating, for each audio channel, at least one reflected sub-channel configured to cause a majority of driver energy to reflect off of one or more surfaces of the listening area, and at least one direct sub-channel configured to cause a majority of driver energy to propagate directly to the playback location.

Abstract translation: 描述了在听音环境中渲染空间音频内容的系统的实施例。 该系统包括：渲染组件，被配置为生成多个音频通道，包括指定收听区域中的回放位置的信息，上混合器组件接收多个音频通道，并为每个音频通道生成至少一个反射子通道， 使得大部分驾驶员能量反射出收听区域的一个或多个表面，以及至少一个直接子通道，其被配置为使大多数驾驶员能量直接传播到播放位置。