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31.发明申请Apparatus and method for generating a level parameter and apparatus and method for generating a multi-channel representation 有权用于产生水平参数的装置和方法以及用于生成多声道表示的装置和方法公开(公告)号：US20070002971A1
公开(公告)日：2007-01-04
申请号：US11517900
申请日：2006-09-08
IPC分类号： H04L27/00
CPC分类号： H04R5/00 , G10L19/008 , G10L19/0204 , G10L19/032 , G10L19/167 , G10L19/26 , H04S3/02 , H04S5/00 , H04S2400/01 , H04S2400/03
摘要： A parameter representation of a multi-channel signal having several original channels includes a parameter set, which, when used together with at least one down-mix channel allows a multi-channel reconstruction. An additional level parameter is calculated such that an energy of the at least one downmix channel weighted by the level parameter is equal to a sum of energies of the original channels. The additional level parameter is transmitted to a multi-channel reconstructor together with the parameter set or together with a down-mix channel. An apparatus for generating a multi-channel representation uses the level parameter to correct the energy of the at least one transmitted down-mix channel before entering the down-mix signal into an up-mixer or within the up-mixing process.
摘要翻译： 具有多个原始信道的多信道信号的参数表示包括参数集合，当与至少一个缩减混合信道一起使用时，允许多信道重构。 计算附加电平参数，使得由电平参数加权的至少一个下混通道的能量等于原始通道的能量之和。 附加电平参数与参数组一起发送到多通道重构器，或与降混频道一起发送。 用于产生多通道表示的装置使用电平参数来校正至少一个发送的下混通道的能量，然后再将其进入上混频器或上混频过程。
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公开(公告)号：US08538031B2
公开(公告)日：2013-09-17
申请号：US12882894
申请日：2010-09-15
CPC分类号： H04R5/00 , G10L19/008 , G10L19/0204 , G10L19/032 , G10L19/167 , G10L19/26 , H04S3/02 , H04S5/00 , H04S2400/01 , H04S2400/03
摘要： A multi-channel input signal having at least three original channels is represented by a parameter representation of the multi-channel signal. A first balance parameter, a first coherence parameter, or a first inter-channel time difference between a first channel pair and a second balance parameter, or a second coherence parameter, or a second inter-channel time difference parameter between a second channel pair are calculated. This set of parameters is the parameter representation of the original signals. The first channel pair has two channels, which are different from two channels of a second channel pair. Furthermore, each channel of the two channel pairs is one of the original channels, or a weighted combination of the original channels, and the first channel pair and the second channel pair include information on the three original channels. For multi-channel reconstruction purposes, the parameters are used in addition to down-mixing information to generate a selectable number of output channels in a scalable fashion.
摘要翻译： 具有至少三个原始信道的多信道输入信号由多信道信号的参数表示来表示。 在第二通道对之间的第一通道对和第二平衡参数之间的第一平衡参数，第一相干参数或第一通道间时间差或第二相干参数或第二通道间差参数是 计算。 这组参数是原始信号的参数表示。 第一通道对具有两个通道，它们与第二通道对的两个通道不同。 此外，两个信道对的每个信道是原始信道之一或原始信道的加权组合，并且第一信道对和第二信道对包括关于三个原始信道的信息。 对于多通道重建的目的，除了降混信息之外还使用这些参数，以便以可缩放的方式生成可选数量的输出通道。
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33.发明申请公开(公告)号：US20130142340A1
公开(公告)日：2013-06-06
申请号：US13816459
申请日：2011-08-16
申请人： Leif Sehlstrom , Heiko Purnhagen , Jonas Engdegard
发明人： Leif Sehlstrom , Heiko Purnhagen , Jonas Engdegard
IPC分类号： H04R5/00
CPC分类号： H04R5/00 , G10L19/005 , G10L19/008 , G10L21/0364 , H04B1/1676 , H04H40/81
摘要： The present invention relates to audio signal processing. In particular, it relates to a method and system for reliably concealing intermittent mono reception of FM stereo radio receivers. The system comprises a parametric stereo parameter estimation stage configured to determine a first parametric stereo parameter based on a first frame of the received two-channel audio signal. The system further comprises a concealment detection stage configured to determine an energy of a side signal within the first signal frame; determine a number of following successive signal frames during which the energy of the side signal drops from a value above the high threshold to a value below a low threshold; determine that the two-channel audio signal following the first signal frame is a forced mono signal if the number of successive signal frames is below a frame threshold; and determine the parametric stereo parameter based on the first parametric stereo parameter.
摘要翻译： 本发明涉及音频信号处理。 特别涉及用于可靠地隐藏FM立体声无线电接收机的间歇单声道接收的方法和系统。 该系统包括参数立体声参数估计级，其被配置为基于所接收的双声道音频信号的第一帧来确定第一参数立体声参数。 所述系统还包括隐藏检测级，被配置为确定所述第一信号帧内的侧信号的能量; 确定随后的连续信号帧的数量，在此期间，侧信号的能量从高于高阈值的值下降到低于低阈值的值; 如果连续信号帧的数量低于帧阈值，则确定跟随第一信号帧的双声道音频信号是强制单声道信号; 并根据第一参数立体声参数确定参数立体声参数。
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34.发明授权Apparatus and method for generating a level parameter and apparatus and method for generating a multi-channel representation 有权用于产生水平参数的装置和方法以及用于生成多声道表示的装置和方法公开(公告)号：US08223976B2
公开(公告)日：2012-07-17
申请号：US11517900
申请日：2006-09-08
IPC分类号： H04R5/00
CPC分类号： H04R5/00 , G10L19/008 , G10L19/0204 , G10L19/032 , G10L19/167 , G10L19/26 , H04S3/02 , H04S5/00 , H04S2400/01 , H04S2400/03
摘要： A parameter representation of a multi-channel signal having several original channels includes a parameter set, which, when used together with at least one down-mix channel allows a multi-channel reconstruction. An additional level parameter is calculated such that an energy of the at least one downmix channel weighted by the level parameter is equal to a sum of energies of the original channels. The additional level parameter is transmitted to a multi-channel reconstructor together with the parameter set or together with a down-mix channel. An apparatus for generating a multi-channel representation uses the level parameter to correct the energy of the at least one transmitted down-mix channel before entering the down-mix signal into an up-mixer or within the up-mixing process.
摘要翻译： 具有多个原始信道的多信道信号的参数表示包括参数集合，当与至少一个缩减混合信道一起使用时，允许多信道重构。 计算附加电平参数，使得由电平参数加权的至少一个下混通道的能量等于原始通道的能量之和。 附加电平参数与参数组一起发送到多通道重构器，或与降混频道一起发送。 用于产生多通道表示的装置使用电平参数来校正至少一个发送的下混合信道的能量，然后将其进入上混频器中或在上混频过程中。
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公开(公告)号：US08019350B2
公开(公告)日：2011-09-13
申请号：US11291009
申请日：2005-11-29
CPC分类号： H04S5/02 , G10L19/008
摘要： A multi-channel signal having at least three channels can be reconstructed such, that the reconstructed channels are at least partly de-correlated from each other using a downmixed signal derived from an original multi-channel signal and a set of de-correlated signals provided by a de-correlator (101) that derives the set of de-correlated signals from the down-mix signal, wherein the de-correlated signals within the set of de-correlated signals are mutually mostly orthogonal to each other, i.e. an orthogonality relation between channel pairs is satisfied within an orthogonality tolerance range.
摘要翻译： 可以重建具有至少三个信道的多信道信号，使得使用从原始多信道信号导出的下混合信号和提供的一组去相关信号，使得重构信道彼此至少部分地相互关联 通过去相关器（101），其从所述下混合信号中导出所述一组去相关信号，其中所述解相关信号组内的去相关信号彼此大致正交，即正交关系 在正交公差范围内满足通道对之间。
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公开(公告)号：US07974847B2
公开(公告)日：2011-07-05
申请号：US11286199
申请日：2005-11-22
IPC分类号： G10L19/00
CPC分类号： G10L19/008
摘要： A parameter calculator calculates lower resolution parametric information and interpolation information. On a decoder-side, an upmixer is used for generating the output channels. The upmixer uses high resolution parametric information generated by a parameter interpolator using the low resolution parametric information and decoder-side derived interpolation information or encoder-generated interpolation information for selecting one of a plurality of different interpolation characteristics.
摘要翻译： 参数计算器计算低分辨率参数信息和插值信息。 在解码器侧，上混频器用于产生输出通道。 上混频器使用由参数内插器产生的高分辨率参数信息，其使用低分辨率参数信息和解码器侧导出的内插信息或编码器生成的用于选择多个不同插值特性之一的内插信息。
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37.发明申请Apparatus and Method for Generating a Level Parameter and Apparatus and Method for Generating a Multi-Channel Representation 有权用于生成电平参数的装置和方法以及用于产生多声道表示的装置和方法公开(公告)号：US20110075848A1
公开(公告)日：2011-03-31
申请号：US12872507
申请日：2010-08-31
IPC分类号： H04H20/47
CPC分类号： H04R5/00 , G10L19/008 , G10L19/0204 , G10L19/032 , G10L19/167 , G10L19/26 , H04S3/02 , H04S5/00 , H04S2400/01 , H04S2400/03
摘要： A parameter representation of a multi-channel signal having several original channels includes a parameter set, which, when used together with at least one down-mix channel allows a multi-channel reconstruction. An additional level parameter is calculated such that an energy of the at least one downmix channel weighted by the level parameter is equal to a sum of energies of the original channels. The additional level parameter is transmitted to a multi-channel reconstructor together with the parameter set or together with a down-mix channel. An apparatus for generating a multi-channel representation uses the level parameter to correct the energy of the at least one transmitted down-mix channel before entering the down-mix signal into an up-mixer or within the up-mixing process.
摘要翻译： 具有多个原始信道的多信道信号的参数表示包括参数集合，当与至少一个缩减混合信道一起使用时，允许多信道重构。 计算附加电平参数，使得由电平参数加权的至少一个下混通道的能量等于原始通道的能量之和。 附加电平参数与参数组一起发送到多通道重构器，或与降混频道一起发送。 用于产生多通道表示的装置使用电平参数来校正至少一个发送的下混通道的能量，然后再将其进入上混频器或上混频过程。
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公开(公告)号：US20110002470A1
公开(公告)日：2011-01-06
申请号：US12882894
申请日：2010-09-15
IPC分类号： H04R5/00
CPC分类号： H04R5/00 , G10L19/008 , G10L19/0204 , G10L19/032 , G10L19/167 , G10L19/26 , H04S3/02 , H04S5/00 , H04S2400/01 , H04S2400/03
摘要： A multi-channel input signal having at least three original channels is represented by a parameter representation of the multi-channel signal. A first balance parameter, a first coherence parameter, or a first inter-channel time difference between a first channel pair and a second balance parameter, or a second coherence parameter, or a second inter-channel time difference parameter between a second channel pair are calculated. This set of parameters is the parameter representation of the original signals. The first channel pair has two channels, which are different from two channels of a second channel pair. Furthermore, each channel of the two channel pairs is one of the original channels, or a weighted combination of the original channels, and the first channel pair and the second channel pair include information on the three original channels.For multi-channel reconstruction purposes, the parameters are used in addition to down-mixing information to generate a selectable number of output channels in a scalable fashion.
摘要翻译： 具有至少三个原始信道的多信道输入信号由多信道信号的参数表示来表示。 在第二通道对之间的第一通道对和第二平衡参数之间的第一平衡参数，第一相干参数或第一通道间时间差或第二相干参数或第二通道间差参数是 计算。 这组参数是原始信号的参数表示。 第一通道对具有两个通道，它们与第二通道对的两个通道不同。 此外，两个信道对的每个信道是原始信道之一或原始信道的加权组合，并且第一信道对和第二信道对包括关于三个原始信道的信息。 对于多通道重建的目的，除了降混信息之外还使用这些参数，以便以可缩放的方式生成可选数量的输出通道。
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39.发明申请公开(公告)号：US20060233380A1
公开(公告)日：2006-10-19
申请号：US11314711
申请日：2005-12-21
申请人： Andreas Holzer , Jurgen Herre , Heiko Purnhagen , Kristofer Kjorling , Jonas Roden , Lars Villemoes , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers , Werner Oomen
发明人： Andreas Holzer , Jurgen Herre , Heiko Purnhagen , Kristofer Kjorling , Jonas Roden , Lars Villemoes , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers , Werner Oomen
IPC分类号： H04R5/00
CPC分类号： G10L19/008 , H04S3/00 , H04S2420/03
摘要： A parametric representation of a multi-channel audio signal describes the spatial properties of the audio signal well with compact side information when a coherence information, describing the coherence between a first and a second channel, is derived within a hierarchical encoding process only for channel pairs including a first channel having only information of a left side with respect to a listening position and including a second channel having only information from a right side with respect to a listening position. As within the hierarchical process the multiple audio channels of the audio signal are downmixed iteratively into monophonic channels, one can pick the relevant parameters from an encoding step involving only channel pairs carrying the information needed to describe the spatial properties of the multi-channel audio signal.
摘要翻译： 多通道音频信号的参数化表示利用紧凑的侧信息来描述音频信号的空间属性，当描述第一和第二信道之间的相干性的相干信息仅在信道对的分级编码处理中导出时 包括仅具有相对于收听位置的左侧的信息的第一频道，并且包括仅具有相对于收听位置的右侧的信息的第二频道。 如在分层处理中，音频信号的多个音频通道被迭代地下混合成单声道，可以从仅涉及携带描述多声道音频信号的空间属性所需的信息的信道对的编码步骤中选择相关参数 。
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公开(公告)号：US20060133618A1
公开(公告)日：2006-06-22
申请号：US11286239
申请日：2005-11-23
申请人： Lars Villemoes , Heiko Purnhagen , Jonas Roeden , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers
发明人： Lars Villemoes , Heiko Purnhagen , Jonas Roeden , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers
IPC分类号： H04R5/00
CPC分类号： G10L19/008
摘要： A parametric representation of a multi-channel audio signal having parameters suited to be used together with a monophonic downmix signal to calculate a reconstruction of the multi-channel audio signal can efficiently be derived in a stereo-backwards compatible way when a parameter combiner is used to generate the parametric representation by combining a one or more spatial parameters and a stereo parameter resulting in a parametric representation having a decoder usable stereo parameter and an information on the one or more spatial parameters that represents, together with the decoder usable stereo parameter, the one or more spatial parameters.
摘要翻译： 当使用参数组合器时，具有适合于与单声道下混信号一起使用以计算多声道音频信号的重建的参数的多声道音频信号的参数表示可以以立体声向后兼容的方式有效地导出 通过组合一个或多个空间参数和立体声参数来产生参数表示，该立体参数导致具有解码器可用立体声参数的参数表示以及与解码器可用立体参数一起表示的一个或多个空间参数的信息， 一个或多个空间参数。
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