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公开(公告)号：US07986789B2
公开(公告)日：2011-07-26
申请号：US11549963
申请日：2006-10-16
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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22.发明授权公开(公告)号：US07961890B2
公开(公告)日：2011-06-14
申请号：US11314711
申请日：2005-12-21
申请人： Andreas Hölzer , Jürgen Herre , Heiko Purnhagen , Kristofer Kjörling , Jonas Röden , Lars Villemoes , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers , Werner Oomen
发明人： Andreas Hölzer , Jürgen Herre , Heiko Purnhagen , Kristofer Kjörling , Jonas Röden , 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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23.发明申请Apparatus and method for generating multi-channel synthesizer control signal and apparatus and method for multi-channel synthesizing 有权用于产生多声道合成器控制信号的装置和方法，用于多声道合成的装置和方法公开(公告)号：US20080002842A1
公开(公告)日：2008-01-03
申请号：US11212395
申请日：2005-08-25
申请人： Matthias Neusinger , Jurgen Herre , Sascha Disch , Heiko Purnhagen , Kristofer Kjorling , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers , Werner Oomen
发明人： Matthias Neusinger , Jurgen Herre , Sascha Disch , Heiko Purnhagen , Kristofer Kjorling , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers , Werner Oomen
IPC分类号： H04B1/00
CPC分类号： G10L19/26 , G10L19/008 , G10L2019/0012 , H04S3/008
摘要： On an encoder-side, a multi-channel input signal is analyzed for obtaining smoothing control information, which is to be used by a decoder-side multi-channel synthesis for smoothing quantized transmitted parameters or values derived from the quantized transmitted parameters for providing an improved subjective audio quality in particular for slowly moving point sources and rapidly moving point sources having tonal material such as fast moving sinusoids.
摘要翻译： 在编码器侧，分析多通道输入信号以获得平滑控制信息，该平滑控制信息将被解码器侧多信道合成用于平滑经量化的传输参数或从量化的传输参数导出的值，以提供 改善主观音频质量，特别是对于缓慢移动的点源和具有诸如快速移动的正弦波的音调材料的快速移动的点源。
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公开(公告)号：US20070258607A1
公开(公告)日：2007-11-08
申请号：US11549963
申请日：2006-10-16
IPC分类号： H04R5/02
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声道输入信号由多声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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25.发明授权公开(公告)号：US09237400B2
公开(公告)日：2016-01-12
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 , H04B1/16 , H04H40/81 , G10L21/0364 , G10L19/005 , G10L19/008
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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公开(公告)号：US09094754B2
公开(公告)日：2015-07-28
申请号：US13814920
申请日：2011-08-16
申请人： Jonas Engdegard , Heiko Purnhagen , Leif Sehlstrom
发明人： Jonas Engdegard , Heiko Purnhagen , Leif Sehlstrom
IPC分类号： H04R5/04 , G10L19/008 , H04B1/16 , H04S1/00
CPC分类号： H04R5/04 , G10L19/008 , H04B1/1676 , H04S1/007
摘要： The document relates to audio signal processing, in particular to a system and a corresponding method for improving an audio signal of an FM stereo radio receiver, in this context, one aspect relates to the estimation of noise in a received side signal and the compensation of such noise in parametric stereo parameters. A system for generating a parametric stereo parameter from a two-channel audio signal is described. The two-channel audio signal is presentable as a mid signal and side signal representative of a corresponding left and right audio signal. The system comprises a noise estimation stage configured to determine an impact factor characteristic for the noise of the side signal; and a parametric stereo parameter estimation stage configured to determine the parametric stereo parameter; wherein the determining is based on the two-channel audio signal and the impact factor.
摘要翻译： 该文献涉及音频信号处理，具体涉及用于改进FM立体声无线电接收机的音频信号的系统和相应的方法，在本文中，一方面涉及接收侧信号中的噪声估计和 这样的噪声参数立体声参数。 描述了一种用于从双声道音频信号产生参数立体声参数的系统。 双声道音频信号可以作为表示相应的左和右音频信号的中间信号和侧面信号呈现。 该系统包括噪声估计级，其被配置为确定侧信号的噪声的影响因子特性; 以及被配置为确定所述参数立体声参数的参数立体声参数估计级; 其中所述确定基于所述双声道音频信号和所述影响因子。
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公开(公告)号：US08654985B2
公开(公告)日：2014-02-18
申请号：US13040057
申请日：2011-03-03
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
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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公开(公告)号：US20130142339A1
公开(公告)日：2013-06-06
申请号：US13814920
申请日：2011-08-16
申请人： Jonas Engdegard , Heiko Purnhagen , Leif Sehlstrom
发明人： Jonas Engdegard , Heiko Purnhagen , Leif Sehlstrom
IPC分类号： H04R5/04
CPC分类号： H04R5/04 , G10L19/008 , H04B1/1676 , H04S1/007
摘要： The document relates to audio signal processing, in particular to a system and a corresponding method for improving an audio signal of an FM stereo radio receiver, in this context, one aspect relates to the estimation of noise in a received side signal and the compensation of such noise in parametric stereo parameters. A system for generating a parametric stereo parameter from a two-channel audio signal is described. The two-channel audio signal is presentable as a mid signal and side signal representative of a corresponding left and right audio signal. The system comprises a noise estimation stage configured to determine an impact factor characteristic for the noise of the side signal; and a parametric stereo parameter estimation stage configured to determine the parametric stereo parameter; wherein the determining is based on the two-channel audio signal and the impact factor.
摘要翻译： 本文件涉及音频信号处理，具体涉及用于改进FM立体声无线电接收机的音频信号的系统和相应方法，在本上下文中，一个方面涉及接收侧信号中的噪声估计和 这样的噪声参数立体声参数。 描述了一种用于从双声道音频信号产生参数立体声参数的系统。 双声道音频信号可以作为表示相应的左和右音频信号的中间信号和侧面信号呈现。 该系统包括噪声估计级，其被配置为确定侧信号的噪声的影响因子特性; 以及被配置为确定所述参数立体声参数的参数立体声参数估计级; 其中所述确定基于所述双声道音频信号和所述影响因子。
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29.发明申请公开(公告)号：US20120207307A1
公开(公告)日：2012-08-16
申请号：US13394799
申请日：2010-09-07
IPC分类号： H04H20/48
CPC分类号： H04S3/00 , G10L19/008 , H04H40/45 , H04H40/72 , H04H40/81 , H04S1/00 , H04S1/007 , H04S5/00 , H04S2420/03
摘要： The invention relates to an apparatus for improving a stereo audio signal of an FM stereo radio receiver. The apparatus comprises a parametric stereo (PS) parameter estimation stage. The parameter estimation stage is configured to determine one or more parametric stereo parameters based on the stereo audio signal in a frequency-variant or frequency-invariant manner. Preferably, these PS parameters are time- and frequency-variant. Moreover, the apparatus comprises an upmix stage. The upmix stage is configured to generate the improved stereo signal based on a first audio signal and the one or more parametric stereo parameters. The first audio signal is obtained from the stereo audio signal, e.g. by a downmix operation in a downmix stage. The PS parameter estimation stage may be part of a PS encoder. The upmix stage may be part of a PS decoder.
摘要翻译： 本发明涉及一种用于改进FM立体声无线电接收机的立体声音频信号的装置。 该装置包括参数立体声（PS）参数估计级。 参数估计级被配置为基于立体声音频信号以频率变化或频率不变的方式确定一个或多个参数立体声参数。 优选地，这些PS参数是时间和频率变化的。 此外，该装置包括上混级。 上混级被配置为基于第一音频信号和一个或多个参数立体声参数来生成改进的立体声信号。 第一音频信号是从立体声音频信号获得的。 通过下混合阶段的下混合操作。 PS参数估计阶段可以是PS编码器的一部分。 上混级可以是PS解码器的一部分。
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公开(公告)号：US07916873B2
公开(公告)日：2011-03-29
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
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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