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公开(公告)号：US09462404B2
公开(公告)日：2016-10-04
申请号：US13588139
申请日：2012-08-17
IPC分类号： G10L19/00 , H04S3/00 , H04S3/02 , G10L19/008
CPC分类号： H04S3/02 , G10L19/008 , G10L19/032 , H04S3/008 , H04S2400/03 , H04S2420/03
摘要： In processing a multi-channel audio signal having at least three original channels, a first downmix channel and a second downmix channel are provided, which are derived from the original channels. For a selected original channel, channel side information are calculated such that a downmix channel or a combined downmix channel including the first and the second downmix channels, when weighted using the channel side information, results in an approximation of the selected original channel. The channel side information and the first and second downmix channels form output data to be transmitted to a decoder, which, in case of a low level decoder only decodes the first and second downmix channels or, in case of a high level decoder provides a full multi-channel audio signal based on the downmix channels and the channel side information.
摘要翻译： 在处理具有至少三个原始信道的多声道音频信号时，提供从原始信道导出的第一下混通道和第二下混通道。 对于所选择的原始信道，计算信道侧信息，使得当使用信道侧信息加权时，包括第一和第二下混通道的下混通道或组合下混通道导致所选原始通道的近似。 信道侧信息以及第一和第二下混通道形成要发送到解码器的输出数据，其在低电平解码器的情况下仅解码第一和第二下混通道，或者在高电平解码器提供满 基于下混频道的多声道音频信号和频道侧信息。
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2.发明授权公开(公告)号：US07447317B2
公开(公告)日：2008-11-04
申请号：US10679085
申请日：2003-10-02
CPC分类号： H04S3/02 , G10L19/008 , G10L19/032 , H04S3/008 , H04S2400/03 , H04S2420/03
摘要： In processing a multi-channel audio signal having at least three original channels, a first downmix channel and a second downmix channel are provided, which are derived from the original channels. For a selected original channel of the original channels, channel side information are calculated such that a downmix channel or a combined downmix channel including the first and the second downmix channels, when weighted using the channel side information, results in an approximation of the selected original channel. The channel side information and the first and second downmix channels form output data to be transmitted to a decoder, which, in case of a low level decoder only decodes the first and second downmix channels or, in case of a high level decoder provides a full multi-channel audio signal based on the downmix channels and the channel side information.
摘要翻译： 在处理具有至少三个原始信道的多声道音频信号时，提供从原始信道导出的第一下混通道和第二下混通道。 对于原始频道的所选择的原始频道，计算频道侧信息，使得当使用频道侧信息加权时，包括第一和第二下混频道的下混频道或组合缩混频道导致所选原稿的近似 渠道。 信道侧信息以及第一和第二下混通道形成要发送到解码器的输出数据，其在低电平解码器的情况下仅解码第一和第二下混通道，或者在高电平解码器提供满 基于下混频道的多声道音频信号和频道侧信息。
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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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公开(公告)号：US09043200B2
公开(公告)日：2015-05-26
申请号：US12948417
申请日：2010-11-17
IPC分类号： G10L19/00 , G10L21/00 , G06K9/36 , H03K7/00 , H03M7/40 , G10L19/008 , H04N19/196 , H04N19/15 , H04N19/12 , H04N19/463 , H04N19/91 , G10L19/02 , G10L19/002 , G10L25/18
CPC分类号： H03M7/40 , G10L19/0017 , G10L19/002 , G10L19/008 , G10L19/0204 , G10L25/18 , H04N19/12 , H04N19/15 , H04N19/196 , H04N19/463 , H04N19/91
摘要： The present invention is based on the finding that parameters including: a first set of parameters of a representation of a first portion of an original signal and a second set of parameters of a representation of a second portion of the original signal can be efficiently encoded when the parameters are arranged in a first sequence of tuples and a second sequence of tuples. The first sequence of tuples includes tuples of parameters having two parameters from a single portion of the original signal and the second sequence of tuples includes tuples of parameters having one parameter from the first portion and one parameter from the second portion of the original signal. A bit estimator estimates the number of necessary bits to encode the first and the second sequence of tuples. Only the sequence of tuples, which results in the lower number of bits, is encoded.
摘要翻译： 本发明基于以下发现：包括：原始信号的第一部分的表示的第一组参数和原始信号的第二部分的表示的第二组参数的参数可以被有效地编码， 参数以元组的第一序列和第二序列的元组排列。 元组的第一序列包括具有来自原始信号的单个部分的两个参数的参数的元组，并且第二序列元组包括具有来自第一部分的一个参数的参数元组和来自原始信号的第二部分的一个参数。 比特估计器估计要对第一和第二个元组序列进行编码的必需比特数。 只有导致较低位数的元组序列被编码。
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5.发明授权Method and device for detecting a transient in a discrete-time audio signal 有权用于检测离散时间音频信号中的瞬变的方法和装置公开(公告)号：US06826525B2
公开(公告)日：2004-11-30
申请号：US10183139
申请日：2002-06-25
申请人： Johannes Hilpert , Jürgen Herre , Bernhard Grill , Rainer Buchta , Karlheinz Brandenburg , Heinz Gerhäuser
发明人： Johannes Hilpert , Jürgen Herre , Bernhard Grill , Rainer Buchta , Karlheinz Brandenburg , Heinz Gerhäuser
IPC分类号： G10L1900
CPC分类号： H04B1/665
摘要： A method for detecting a transient in a discrete-time audio signal is performed completely in the time domain and includes the step of segmenting the discrete-time audio signal so as to generate consecutive segments of the same length with unfiltered discrete-time audio signals xs(T−1). The discrete-time audio signal in a current segment is subsequently filtered. Then either the energy of the filtered discrete-time audio signal in the current segment can be compared with the energy of the filtered discrete-time audio signal in a preceding segment or a current relationship between the energy of the filtered discrete-time audio signal in the current segment and the energy of the unfiltered discrete-time audio signal in the current segment can be formed and this current relationship compared with a preceding corresponding relationship. On the basis of the one and/or the other of these comparisons it is detected whether a transient is present in the discrete-time audio signal.
摘要翻译： 用于检测离散时间音频信号中的瞬态的方法在时域中完全执行，并且包括分段离散时间音频信号以便生成具有未滤波的离散时间音频信号xs的相同长度的连续片段的步骤 （T-1）。 随后过滤当前片段中的离散时间音频信号。 然后可以将当前段中滤波的离散时间音频信号的能量与前一段中滤波的离散时间音频信号的能量或滤波后的离散时间音频信号的能量之间的当前关系进行比较 可以形成当前段的当前段和未过滤离散时间音频信号的能量，并将该当前关系与先前的对应关系进行比较。 基于这些比较中的一个和/或另一个，检测离散时间音频信号中是否存在瞬态。
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6.发明授权Energy dependent quantization for efficient coding of spatial audio parameters 有权能量相关量化用于空间音频参数的有效编码公开(公告)号：US08054981B2
公开(公告)日：2011-11-08
申请号：US11406631
申请日：2006-04-19
申请人： Jonas Röden , Jonas Engdegard , Heiko Purnhagen , Jeroen Breebaart , Erik Schuijers , Steven van de Par , Johannes Hilpert , Jürgen Herre
发明人： Jonas Röden , Jonas Engdegard , Heiko Purnhagen , Jeroen Breebaart , Erik Schuijers , Steven van de Par , Johannes Hilpert , Jürgen Herre
IPC分类号： H04R5/00
CPC分类号： G10L19/03 , G10L19/008
摘要： Parameters being a measure for a characteristic of a channel or of a pair of channels, wherein the parameter is a measure for a characteristic of the channel or of the pair of channels with respect to another channel of a multi-channel signal can be quantized more efficiently using a quantization rule that is generated based on a relation of an energy measure of the channel or the pair of channels and an energy measure of the multi-channel signal. With generation of the quantization rule taking into account a psycho acoustic approach, the size of an encoded representation of the multi-channel signal can be decreased by coarser quantization without significantly disturbing the perceptual quality of the multi-channel signal when reconstructed from the encoded representation.
摘要翻译： 参数是用于信道或一对信道特性的度量，其中参数是相对于多信道信号的另一信道的信道或信道对的特性的度量可以被更多地量化 有效地使用基于信道的能量测量或信道对的关系产生的量化规则和多信道信号的能量测量。 考虑到心理声学方法的生成量化规则，可以通过较粗略的量化来减少多信道信号的编码表示的大小，而不会在从编码表示重建时显着干扰多信道信号的感知质量 。
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公开(公告)号：US07991610B2
公开(公告)日：2011-08-02
申请号：US11243915
申请日：2005-10-05
CPC分类号： H03M7/40 , G10L19/0017 , G10L19/002 , G10L19/008 , G10L19/0204 , G10L25/18 , H04N19/12 , H04N19/15 , H04N19/196 , H04N19/463 , H04N19/91
摘要： The present invention is based on the finding that parameters including a first set of parameters of a representation of a first portion of an original signal and including a second set of parameters of a representation of a second portion of the original signal can be efficiently encoded, when the parameters are arranged in a first sequence of tuples and in a second sequence of tuples, wherein the first sequence of tuples comprises tuples of parameters having two parameters from a single portion of the original signal and wherein the second sequence of tuples comprises tuples of parameters having one parameter from the first portion and one parameter from the second portion of the original signal. An efficient encoding can be achieved using a bit estimator to estimate the number of necessary bits to encode the first and the second sequence of tuples, wherein only the sequence of tuples is encoded, that results in the lower number of bits.
摘要翻译： 本发明基于以下发现：可以有效地编码包括原始信号的第一部分的表示的第一组参数和包括原始信号的第二部分的表示的第二组参数的参数的发现， 当所述参数被布置在元组的第一序列中并且以第二次元组排列时，其中所述元组的所述第一序列包括具有来自所述原始信号的单个部分的两个参数的参数的元组，并且其中所述第二序列元组包括： 参数具有来自第一部分的一个参数和来自原始信号的第二部分的一个参数。 可以使用位估计器来实现有效编码，以估计对第一和第二元组序列进行编码的必需位数，其中仅对元组的序列进行编码，导致较低位数。
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公开(公告)号：US07788106B2
公开(公告)日：2010-08-31
申请号：US11251485
申请日：2005-10-14
CPC分类号： H03M7/42
摘要： The present invention is based on the finding that an efficient code for encoding information values can be derived, when two or more information values are grouped in a tuple in a tuple order and when an encoding rule is used, that assigns the same code word to tuples having identical information values in different orders and that does derive an order information, indicating the tuple order, and when the code word is output in association with the order information.
摘要翻译： 本发明基于以下发现：当两个或多个信息值以元组顺序被分组成元组并且当使用编码规则时，可以导出用于编码信息值的有效代码，将相同的代码字分配给 元组具有不同顺序的相同信息值，并且确定导出指示元组顺序的订单信息，以及何时与订单信息相关联地输出代码字。
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公开(公告)号：US07391870B2
公开(公告)日：2008-06-24
申请号：US10935061
申请日：2004-09-07
申请人： Jürgen Herre , Christof Faller , Sascha Disch , Johannes Hilpert
发明人： Jürgen Herre , Christof Faller , Sascha Disch , Johannes Hilpert
CPC分类号： G10L19/008 , H04S3/00 , H04S2420/03
摘要： An apparatus for generating a multi-channel output signal performs a center channel cancellation to obtain improved base channels for reconstructing left-side output channels or right-side output channels. In particular, the apparatus includes a cancellation channel calculator for calculating a cancellation channel using information related to the original center channel available at the decoder. The device furthermore includes a combiner for combining a transmission channel with the cancellation channel. Finally, the apparatus includes a reconstructor for generating the multi-channel output signal. Due to the center channel cancellation, the channel reconstructor not only uses a different base channel for reconstructing the center channel but also uses base channels different from the transmission channels for reconstructing left and right output channels which have a reduced or even completely cancelled influence of the original center channel.
摘要翻译： 用于产生多通道输出信号的装置执行中心信道消除以获得用于重建左侧输出信道或右侧输出信道的改进的基本信道。 具体地，该装置包括消除信道计算器，用于使用与解码器可用的原始中心信道相关的信息来计算消除信道。 该装置还包括用于将传输信道与消除信道组合的组合器。 最后，该装置包括用于产生多声道输出信号的重建器。 由于中心信道消除，信道重构器不仅使用不同的基本信道来重构中心信道，而且还使用与传输信道不同的基本信道来重构左右输出信道，这些信道具有减少甚至完全消除的影响 原中心频道。
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10.发明授权Method and device for detecting a transient in a discrete-time audiosignal 有权用于检测离散时间音频信号中的瞬态的方法和装置公开(公告)号：US06453282B1
公开(公告)日：2002-09-17
申请号：US09424596
申请日：1999-11-24
申请人： Johannes Hilpert , Jürgen Herre , Bernhard Grill , Rainer Buchta , Karlheinz Brandenburg , Heinz Gerhäuser
发明人： Johannes Hilpert , Jürgen Herre , Bernhard Grill , Rainer Buchta , Karlheinz Brandenburg , Heinz Gerhäuser
IPC分类号： G10L1900
CPC分类号： H04B1/665
摘要： A method for detecting a transient in a discrete-time audio signal is performed completely in the time domain and includes the step of segmenting the discrete-time audio signal as to generate consecutive segments of the same length with unfiltered discrete-time audio signals. The discrete-time audio signal in a current segment is filtered. Either the energy of the filtered discrete-time audio signal in the current segment is compared with the energy of the filtered discrete-time audio signal in a preceding segment or a current relationship between the energy of the filtered discrete-time audio signal in the current segment and the energy of the unfiltered discrete-time audio signal in the current segment is formed and this current relationship compared with a preceding corresponding relationship. Whether a transient is present in the discrete-time audio signal is detected using one and/or the other of these comparisons.
摘要翻译： 用于检测离散时间音频信号中的瞬态的方法在时域中完全执行，并且包括分段离散时间音频信号以生成具有未滤波离散时间音频信号的相同长度的连续片段的步骤。 当前片段中的离散时间音频信号被过滤。 将当前片段中滤波的离散时间音频信号的能量与先前片段中滤波的离散时间音频信号的能量或电流中滤波后的离散时间音频信号的能量之间的当前关系进行比较 形成当前段中未经滤波的离散时间音频信号的能量，并将该当前关系与先前的对应关系进行比较。 使用这些比较中的一个和/或另一个来检测离散时间音频信号中是否存在瞬态。
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