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1.发明申请Method for Determining Inverse Filter from Critically Banded Impulse Response Data 有权从严格条带脉冲响应数据确定反向滤波器的方法公开(公告)号：US20110274281A1
公开(公告)日：2011-11-10
申请号：US13145758
申请日：2010-01-13
申请人： C. Phillip Brown , Per Ekstrand , Alan Seefeldt
发明人： C. Phillip Brown , Per Ekstrand , Alan Seefeldt
IPC分类号： H04R29/00
CPC分类号： H04R29/001 , H04R3/04 , H04R2430/03
摘要： A method for determining an inverse filter for altering the frequency response of a loudspeaker so that with the inverse filter applied in the loudspeaker's signal path the inverse-filtered loudspeaker output has a target frequency response, and optionally also applying the inverse filter in the signal path, and a system configured (e.g., a general or special purpose processor programmed and configured) to determine an inverse filter. In some embodiments, the inverse filter corrects the magnitude of the loudspeaker's output. In other embodiments, the inverse filter corrects both the magnitude and phase of the loudspeaker's output. In some embodiments, the inverse filter is determined in the frequency domain by applying eigenfilter theory or minimizing a mean square error expression by solving a linear equation system.
摘要翻译： 一种用于确定用于改变扬声器的频率响应的逆滤波器的方法，使得利用在扬声器信号路径中应用的反相滤波器，经滤波的扬声器输出具有目标频率响应，并且还可选地还在信号路径中应用逆滤波器 以及配置（例如，编程和配置的通用或专用处理器）以确定逆滤波器的系统。 在一些实施例中，逆滤波器校正扬声器输出的幅度。 在其他实施例中，逆滤波器校正扬声器的输出的幅度和相位。 在一些实施例中，通过应用特征滤波器理论或通过求解线性方程系统来最小化均方误差表达式，在频域中确定逆滤波器。
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2.发明授权Method for determining inverse filter from critically banded impulse response data 有权用于从严格条带脉冲响应数据确定逆滤波器的方法公开(公告)号：US08761407B2
公开(公告)日：2014-06-24
申请号：US13145758
申请日：2010-01-13
申请人： C Phillip Brown , Per Ekstrand , Alan Seefeldt
发明人： C Phillip Brown , Per Ekstrand , Alan Seefeldt
CPC分类号： H04R29/001 , H04R3/04 , H04R2430/03
摘要： A method for determining an inverse filter for altering the frequency response of a loudspeaker so that with the inverse filter applied in the loudspeaker's signal path the inverse-filtered loudspeaker output has a target frequency response, and optionally also applying the inverse filter in the signal path, and a system configured (e.g., a general or special purpose processor programmed and configured) to determine an inverse filter. In some embodiments, the inverse filter corrects the magnitude of the loudspeaker's output. In other embodiments, the inverse filter corrects both the magnitude and phase of the loudspeaker's output. In some embodiments, the inverse filter is determined in the frequency domain by applying eigenfilter theory or minimizing a mean square error expression by solving a linear equation system.
摘要翻译： 一种用于确定用于改变扬声器的频率响应的逆滤波器的方法，使得利用在扬声器信号路径中应用的反相滤波器，经滤波的扬声器输出具有目标频率响应，并且还可选地还在信号路径中应用逆滤波器 以及配置（例如，编程和配置的通用或专用处理器）以确定逆滤波器的系统。 在一些实施例中，逆滤波器校正扬声器输出的幅度。 在其他实施例中，逆滤波器校正扬声器的输出的幅度和相位。 在一些实施例中，通过应用特征滤波器理论或通过求解线性方程系统来最小化均方误差表达式，在频域中确定逆滤波器。
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3.发明授权公开(公告)号：US09136810B2
公开(公告)日：2015-09-15
申请号：US13406929
申请日：2012-02-28
CPC分类号： H03G3/3005 , G10L21/038 , G10L25/21 , H03G1/00 , H03G3/3089 , H03G7/007 , H03G9/005 , H04R3/04 , H04R2430/03
摘要： In one disclosed aspect, dynamic gain modifications are applied to an audio signal at least partly in response to auditory events and/or the degree of change in signal characteristics associated with said auditory event boundaries. In another aspect, an audio signal is divided into auditory events by comparing the difference in specific loudness between successive time blocks of the audio signal.
摘要翻译： 在一个公开的方面，动态增益修改至少部分地响应于与所述听觉事件边界相关联的听觉事件和/或信号特征的变化程度而应用于音频信号。 在另一方面，通过比较音频信号的连续时间块之间的特定响度的差异，将音频信号分成听觉事件。
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4.发明申请公开(公告)号：US20120155659A1
公开(公告)日：2012-06-21
申请号：US13406929
申请日：2012-02-28
IPC分类号： H03G3/20
CPC分类号： H03G3/3005 , G10L21/038 , G10L25/21 , H03G1/00 , H03G3/3089 , H03G7/007 , H03G9/005 , H04R3/04 , H04R2430/03
摘要： In one disclosed aspect, dynamic gain modification s are applied to an audio signal at least partly in response to auditory events and/or the degree of change in signal characteristics associated with said auditory event boundaries. In another aspect, an audio signal is divided into auditory events by comparing the difference in specific loudness between successive time blocks of the audio signal.
摘要翻译： 在一个公开的方面中，动态增益修改至少部分地响应于听觉事件和/或与所述听觉事件边界相关联的信号特征的变化程度而应用于音频信号。 在另一方面，通过比较音频信号的连续时间块之间的特定响度的差异，将音频信号分成听觉事件。
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公开(公告)号：US20080033732A1
公开(公告)日：2008-02-07
申请号：US11888662
申请日：2007-07-31
IPC分类号： G10L21/00
CPC分类号： H04S3/008 , G10L19/008 , H04S5/005 , H04S2420/03
摘要： During production, at least one audio signal is processed in order to derive instructions for channel reconfiguring it. The at least one audio signal and the instructions are stored or transmitted. During consumption, the at least one audio signal is channel reconfigured in accordance with the instructions. Channel reconfiguring includes upmixing, downmixing, and spatial reconfiguration. By determining the channel reconfiguration instructions during production, processing resources during consumption are reduced.
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6.发明申请Temporal envelope shaping for spatial audio coding using frequency domain wiener filtering 有权使用频域维纳滤波进行空间音频编码的时域包络整形公开(公告)号：US20080033731A1
公开(公告)日：2008-02-07
申请号：US11888651
申请日：2007-07-31
申请人： Mark Vinton , Alan Seefeldt
发明人： Mark Vinton , Alan Seefeldt
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , G10L19/02
摘要： Certain types of parametric spatial coding encoders use interchannel amplitude differences, interchannel time differences, and interchannel coherence or correlation to build a parametric model of a multichannel soundfield that is used by a decoder to construct an approximation of the original soundfield. However, such a parametric model does not reconstruct the original temporal envelope of the soundfield's channels, which has been found to be extremely important for some audio signals. The present invention provides for the reshaping the temporal envelope of one or more of the decoded channels in a spatial coding system to better match one or more original temporal envelopes.
摘要翻译： 某些类型的参数空间编码编码器使用信道间幅度差异，信道间时间差和信道间相干或相关性来构建多声道声场的参数模型，由解码器构造原始声场的近似。 然而，这样的参数模型不会重建声场的信道的原始时间包络，这被发现对于一些音频信号是非常重要的。 本发明提供了在空间编码系统中重构一个或多个解码信道的时间包络，以更好地匹配一个或多个原始时间包络。
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7.发明申请公开(公告)号：US20080040103A1
公开(公告)日：2008-02-14
申请号：US11888646
申请日：2007-07-31
申请人： Mark Vinton , Alan Seefeldt
发明人： Mark Vinton , Alan Seefeldt
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , G10L19/02
摘要： Certain types of parametric spatial coding encoders use interchannel amplitude differences, interchannel time differences, and interchannel coherence or correlation to build a parametric model of a multichannel soundfield that is used by a decoder to construct an approximation of the original soundfield. However, such a parametric model does not reconstruct the original temporal envelope of the soundfield's channels, which has been found to be extremely important for some audio signals. The present invention provides for the reshaping the temporal envelope of one or more of the decoded channels in a spatial coding system to better match one or more original temporal envelopes.
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公开(公告)号：US07038683B1
公开(公告)日：2006-05-02
申请号：US09566586
申请日：2000-05-08
申请人： Alan Seefeldt , Alan Peevers
发明人： Alan Seefeldt , Alan Peevers
IPC分类号： G06T15/00
CPC分类号： G06T13/205 , H04S7/30 , H04S2400/11
摘要： An apparatus and method for generating 3D graphics objects utilizes algorithms to generate the objects when driven by audio events. In one embodiment a “hydra” object has branches that are recursively generated. Parameters used to algorithmically generate the object are controlled by a control signal driven by detected events in an audio signal. Additional algorithms include a phase plot using audio parameters. A generalized system includes an audio analysis block for generating audio control signals utilized by object generation, objects selection and object placement blocks to generate 3D objects.
摘要翻译： 用于产生3D图形对象的装置和方法利用算法在由音频事件驱动时产生对象。 在一个实施例中，“hydra”对象具有递归生成的分支。 用于算法生成对象的参数由音频信号中检测到的事件驱动的控制信号控制。 附加算法包括使用音频参数的相位图。 广义系统包括用于产生由对象生成，对象选择和对象放置块所用的音频控制信号以生成3D对象的音频分析块。
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公开(公告)号：US06369822B1
公开(公告)日：2002-04-09
申请号：US09373405
申请日：1999-08-12
申请人： Alan Peevers , Alan Seefeldt
发明人： Alan Peevers , Alan Seefeldt
IPC分类号： G06T1700
CPC分类号： G06T13/205 , G10L2021/105
摘要： A method and system to drive transformations of a visual representation, in real-time, that synchronizes the audio and visual outputs and controls the magnitude of object deformation to be visual pleasing. In one embodiment, sudden increases in the spectral energy are detected to time the initialization of deformations and a smoothed signal is derived from the time varying spectral energy curve to control the magnitude of the deformations.
摘要翻译： 实时地驱动视觉表示的变换的方法和系统，其使音频和视频输出同步并且将物体变形的大小控制为视觉悦目。 在一个实施例中，检测到光谱能量的突然增加以使变形的初始化达到时间，并且从时变光谱能量曲线导出平滑信号以控制变形的大小。
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公开(公告)号：US20080097750A1
公开(公告)日：2008-04-24
申请号：US11999159
申请日：2007-12-03
申请人： Alan Seefeldt , Mark Vinton , Charles Robinson
发明人： Alan Seefeldt , Mark Vinton , Charles Robinson
CPC分类号： H04S3/008 , G10L19/008 , H04S5/005 , H04S2420/03
摘要： During production, at least one audio signal is processed in order to derive instructions for channel reconfiguring it. The at least one audio signal and the instructions are stored or transmitted. During consumption, the at least one audio signal is channel reconfigured in accordance with the instructions. Channel reconfiguring includes upmixing, downmixing, and spatial reconfiguration. By determining the channel reconfiguration instructions during production, processing resources during consumption are reduced.
摘要翻译： 在生产期间，处理至少一个音频信号以便导出用于信道重新配置的指令。 存储或发送至少一个音频信号和指令。 在消费期间，至少一个音频信号是根据指令重新配置的信道。 通道重新配置包括上混合，下混合和空间重新配置。 通过在生产期间确定信道重配置指令，减少了消费过程中的资源处理。
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