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1.发明申请APPARATUS FOR GENERATING AN ENHANCED DOWNMIX SIGNAL, METHOD FOR GENERATING AN ENHANCED DOWNMIX SIGNAL AND COMPUTER PROGRAM 有权用于产生增强的下行信号的装置，用于产生增强的下行信号和计算机程序的方法公开(公告)号：US20130216047A1
公开(公告)日：2013-08-22
申请号：US13592977
申请日：2012-08-23
IPC分类号： H04R5/00
CPC分类号： H04R5/00 , G10L19/008 , G10L19/265 , G10L21/02
摘要： An apparatus for generating an enhanced downmix signal on the basis of a multi-channel microphone signal has a spatial analyzer configured to compute a set of spatial cue parameters having a direction information describing a direction-of-arrival of a direct sound, a direct sound power information and a diffuse sound power information on the basis of the multi-channel microphone signal. The apparatus also has a filter calculator for calculating enhancement filter parameters in dependence on the direction information describing the direction-of-arrival of the direct sound, in dependence on the direct sound power information and in dependence on the diffuse sound power information. The apparatus also has a filter for filtering the microphone signal, or a signal derived therefrom, using the enhancement filter parameters, to obtain the enhanced downmix signal.
摘要翻译： 一种用于基于多通道麦克风信号产生增强的下混合信号的装置具有空间分析器，该空间分析器被配置为计算具有描述直接声音到达方向的方向信息的一组空间提示参数，直接声音 功率信息和基于多声道麦克风信号的漫射声功率信息。 该装置还具有滤波器计算器，用于根据直接声功率信息和依赖于扩散声功率信息，根据描述直接声音到达方向的方向信息来计算增强滤波器参数。 该装置还具有用于使用增强滤波器参数对麦克风信号进行滤波的滤波器或从其导出的信号，以获得增强的降混信号。
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公开(公告)号：US20140126725A1
公开(公告)日：2014-05-08
申请号：US14151152
申请日：2014-01-09
IPC分类号： G10L19/008
CPC分类号： G10L19/008 , H04S3/008
摘要： A selected channel of a multi-channel signal which is represented by frames composed from sampling values having a high time resolution can be encoded with higher quality when a wave form parameter representation representing a wave form of an intermediate resolution representation of the selected channel is derived, the wave form parameter representation including a sequence of intermediate wave form parameters having a time resolution lower than the high time resolution of the sampling values and higher than a time resolution defined by a frame repetition rate. The wave form parameter representation with the intermediate resolution can be used to shape a reconstructed channel to retrieve a channel having a signal envelope close to that one of the selected original channel. The time scale on which the shaping is performed is shorter than the time scale of a framewise processing, thus enhancing the quality of the reconstructed channel. On the other hand, the shaping time scale is larger than the time scale of the sampling values, significantly reducing the amount of data needed by the wave form parameter representation.
摘要翻译： 当表示所选频道的中间分辨率表示的波形的波形参数表示被导出时，由具有高时间分辨率的采样值组成的帧表示的多信道信号的选择信道可以被更高质量地编码 波形参数表示，包括具有低于采样值的高时间分辨率的时间分辨率并且高于由帧重复率定义的时间分辨率的中间波形参数序列。 具有中间分辨率的波形参数表示可用于对重建的信道进行整形以检索具有接近所选择的原始信道中的那一个的信号包络的信道。 进行整形的时间标度比框架处理的时间标度短，从而提高重构信道的质量。 另一方面，成形时间尺度大于采样值的时间尺度，显着减少波形参数表示所需的数据量。
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3.发明申请APPARATUS AND METHOD FOR EXTRACTING A DIRECT/AMBIENCE SIGNAL FROM A DOWNMIX SIGNAL AND SPATIAL PARAMETRIC INFORMATION 有权从下行信号和空间参考信息中提取直接/环境信号的装置和方法公开(公告)号：US20120314876A1
公开(公告)日：2012-12-13
申请号：US13546048
申请日：2012-07-11
IPC分类号： H04R5/00
CPC分类号： G10L19/008
摘要： An apparatus for extracting a direct and/or ambience signal from a downmix signal and spatial parametric information, the downmix signal and the spatial parametric information representing a multi-channel audio signal having more channels than the downmix signal, wherein the spatial parametric information has inter-channel relations of the multi-channel audio signal, is described. The apparatus has a direct/ambience estimator and a direct/ambience extractor. The direct/ambience estimator is configured for estimating a level information of a direct portion and/or an ambient portion of the multi-channel audio signal based on the spatial parametric information. The direct/ambience extractor is configured for extracting a direct signal portion and/or an ambient signal portion from the downmix signal based on the estimated level information of the direct portion or the ambient portion.
摘要翻译： 一种用于从降混信号和空间参数信息中提取直接和/或环境信号的装置，所述下混信号和所述空间参数信息表示具有比所述下混信号更多的信道的多声道音频信号，其中所述空间参数信息具有 - 多通道音频信号的通道关系。 该设备具有直接/环境估计器和直接/环境提取器。 直接/环境估计器被配置为基于空间参数信息来估计多声道音频信号的直接部分和/或环境部分的电平信息。 直接/环境提取器被配置为基于直接部分或环境部分的估计电平信息从降混信号中提取直接信号部分和/或环境信号部分。
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公开(公告)号：US20130046546A1
公开(公告)日：2013-02-21
申请号：US13654790
申请日：2012-10-18
申请人： Christian UHLE , Juergen HERRE , Oliver HELLMUTH , Stefan FINAUER
发明人： Christian UHLE , Juergen HERRE , Oliver HELLMUTH , Stefan FINAUER
IPC分类号： G10L19/00
CPC分类号： G10L21/00 , G10L21/0264 , G10L21/0364 , G10L25/69 , H03G9/005 , H03G9/025
摘要： An apparatus for modifying an input audio signal has an excitation determiner, a storage device and a signal modifier. The excitation determiner determines a value of an excitation parameter of a subband of a plurality of subbands of the input audio signal based on an energy content of the subband. Further, the storage device stores a lookup table containing a plurality of spectral weighting factors. A spectral weighting factor of the plurality of spectral weighting factors is associated to a predefined value of the excitation parameter and a subband of the plurality of subbands. The storage device provides a spectral weighting factor corresponding to the determined value of the excitation parameter and corresponding to the subband, the value of the excitation parameter is determined for. Further, the signal modifier modifies a content of the subband of the audio signal, the value of the excitation parameter is determined for, based on the provided spectral weighting factor to provide a modified subband.
摘要翻译： 用于修改输入音频信号的装置具有激励确定器，存储装置和信号修改器。 激励确定器基于子带的能量含量来确定输入音频信号的多个子带的子带的激励参数的值。 此外，存储装置存储包含多个频谱加权因子的查找表。 多个频谱加权因子的频谱加权因子与激励参数的预定义值和多个子带中的子带相关联。 存储装置提供对应于确定的激励参数值并对应于子带的频谱加权因子，确定激励参数的值。 此外，信号修改器修改音频信号的子带的内容，基于所提供的频谱加权因子来确定激励参数的值以提供修改的子带。
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公开(公告)号：US20070242833A1
公开(公告)日：2007-10-18
申请号：US11734620
申请日：2007-04-12
CPC分类号： H04S5/005 , G10L19/008 , H04R5/04
摘要： A transient detector is provided for generating an ambience signal suitable for being emitted via loudspeakers for which there is no special loudspeaker signal to detect a transient period. A synthesis signal generator produces a synthesis signal which fulfils the transient condition on the one hand and the continuity condition for the synthesis signal on the other hand. A signal substituter will then substitute a portion of the examination signal by the synthesis signal to obtain an ambience signal for the surround channels.
摘要翻译： 提供了一种瞬态检测器，用于产生适于通过不具有特殊扬声器信号的扬声器发射以检测瞬态周期的环境信号。 合成信号发生器产生合成信号，一方面满足瞬态条件和另一方面合成信号的连续性条件。 然后，信号取代器将通过合成信号替换检查信号的一部分，以获得环绕声道的环境信号。
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6.发明申请APPARATUS, METHOD AND COMPUTER PROGRAM FOR PROVIDING ONE OR MORE ADJUSTED PARAMETERS FOR PROVISION OF AN UPMIX SIGNAL REPRESENTATION ON THE BASIS OF A DOWNMIX SIGNAL REPRESENTATION AND A PARAMETRIC SIDE INFORMATION ASSOCIATED WITH THE DOWNMIX SIGNAL REPRESENTATION, USING AN AVERAGE VALUE 有权提供一个或多个调整参数的装置，方法和计算机程序，用于提供基于下行信号表示的UPMIX信号表示和与下行信号表示相关的参考信息，使用平均值公开(公告)号：US20120263308A1
公开(公告)日：2012-10-18
申请号：US13446747
申请日：2012-04-13
申请人： Juergen HERRE , Cornelia FALCH , Leon TERENTIV
发明人： Juergen HERRE , Cornelia FALCH , Leon TERENTIV
IPC分类号： H04R5/00
CPC分类号： G10L19/008
摘要： An apparatus for providing one or more adjusted parameters for a provision of an upmix signal representation on the basis of a downmix signal representation and a parametric side information associated with the downmix signal representation has a parameter adjuster. The parameter adjuster is configured to receive one or more parameters and to provide, on the basis thereof, one or more adjusted parameters. The parameter adjuster is configured to provide the one or more adjusted parameters in dependence on an average value of a plurality of parameter values, such that a distortion of the upmix signal representation caused by the use of non-optimal parameters is reduced at least for parameters deviating from optimal parameters by more than a predetermined deviation.
摘要翻译： 基于降混信号表示和与下混合信号表示相关联的参数侧信息来提供用于提供上混合信号表示的一个或多个调整参数的装置具有参数调整器。 参数调整器被配置为接收一个或多个参数，并且在其基础上提供一个或多个调整参数。 参数调整器被配置为根据多个参数值的平均值来提供一个或多个经调整的参数，使得至少由于使用非最佳参数引起的上混信号表示的失真至少对于参数 偏离最佳参数大于预定偏差。
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7.发明申请APPARATUS FOR PROVIDING AN UPMIX SIGNAL REPRESENTATION ON THE BASIS OF THE DOWNMIX SIGNAL REPRESENTATION, APPARATUS FOR PROVIDING A BITSTREAM REPRESENTING A MULTI-CHANNEL AUDIO SIGNAL, METHODS, COMPUTER PROGRAMS AND BITSTREAM REPRESENTING A MULTI-CHANNEL AUDIO SIGNAL USING A LINEAR COMBINATION PARAMETER 有权提供基于下行信号表示的UPMIX信号表示的装置，用于提供表示多信道音频信号的方法的装置，方法，计算机程序和使用线性组合参数表示多通道音频信号的BITSTREAM公开(公告)号：US20120259643A1
公开(公告)日：2012-10-11
申请号：US13475084
申请日：2012-05-18
申请人： Jonas ENGDEGARD , Heiko PURNHAGEN , Juergen HERRE , Cornelia FALCH , Oliver HELLMUTH , Leon TERENTIV
发明人： Jonas ENGDEGARD , Heiko PURNHAGEN , Juergen HERRE , Cornelia FALCH , Oliver HELLMUTH , Leon TERENTIV
IPC分类号： G10L19/00
CPC分类号： G10L19/008
摘要： An apparatus for providing an upmix signal representation on the basis of a downmix signal representation and an object-related parametric information, which are included in a bitstream representation of an audio content, in independence on a user-specified rendering matrix, the apparatus has a distortion limiter configured to obtain a modified rendering matrix using a linear combination of a user-specified rendering matrix in a target rendering matrix in dependence on a linear combination parameter. The apparatus also has a signal processor configured to obtain the upmix signal representation on the basis of the downmix signal representation and the object-related parametric information using the modified rendering matrix. The apparatus is also configured to evaluate a bitstream element representing the linear combination parameter in order to obtain the linear combination parameter.
摘要翻译： 一种用于根据用户指定的渲染矩阵独立地包括在音频内容的比特流表示中的下混信号表示和对象相关的参数信息来提供上混合信号表示的装置，该装置具有 失真限制器被配置为根据线性组合参数在目标渲染矩阵中使用用户指定的渲染矩阵的线性组合来获得修改的渲染矩阵。 该装置还具有信号处理器，其被配置为基于下混合信号表示和使用修改的渲染矩阵的对象相关参数信息来获得上混信号表示。 该装置还被配置为评估表示线性组合参数的比特流元件，以便获得线性组合参数。
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8.发明申请APPARATUS FOR PROVIDING AN UPMIX SIGNAL REPRESENTATION ON THE BASIS OF A DOWNMIX SIGNAL REPRESENTATION, APPARATUS FOR PROVIDING A BITSTREAM REPRESENTING A MULTI-CHANNEL AUDIO SIGNAL, METHODS, COMPUTER PROGRAM AND BITSTREAM USING A DISTORTION CONTROL SIGNALING 有权用于提供基于下行信号表示的UPMIX信号表示的装置，用于提供使用失真控制信号的多通道音频信号，方法，计算机程序和比特的提供装置的装置公开(公告)号：US20120243690A1
公开(公告)日：2012-09-27
申请号：US13450027
申请日：2012-04-18
申请人： Jonas ENGDEGARD , Heiko PURNHAGEN , Juergen HERRE , Leon TERENTIV , Cornelia FALCH , Oliver HELLMUTH
发明人： Jonas ENGDEGARD , Heiko PURNHAGEN , Juergen HERRE , Leon TERENTIV , Cornelia FALCH , Oliver HELLMUTH
CPC分类号： H04S3/008 , G10L19/008 , H04S2420/03
摘要： An apparatus for providing an upmix signal representation on the basis of a downmix signal representation and an object-related parametric information, which are included in a bitstream representation of an audio content, and in dependence on a rendering information, has a distortion limiter configured to adjust upmix parameters using a distortion control scheme to avoid or limit audible distortions which are caused by an inappropriate choice of rendering parameters. The distortion limiter is configured to obtain a distortion limitation control parameter, which is included in the bitstream representation of the audio content, and to adjust a distortion control scheme in dependence on the distortion limitation control parameter.
摘要翻译： 基于下混合信号表示和包含在音频内容的比特流表示中并且依赖于呈现信息的对象相关参数信息来提供上混合信号表示的装置具有失真限制器，其被配置为 使用失真控制方案调整上混参数，以避免或限制由不适当选择渲染参数引起的可听失真。 失真限制器被配置为获得包括在音频内容的比特流表示中的失真限制控制参数，并且根据失真限制控制参数来调整失真控制方案。
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9.发明申请AUDIO DECODER, AUDIO OBJECT ENCODER, METHOD FOR DECODING A MULTI-AUDIO-OBJECT SIGNAL, MULTI-AUDIO-OBJECT ENCODING METHOD, AND NON-TRANSITORY COMPUTER-READABLE MEDIUM THEREFOR 有权音频解码器，音频对象编码器，用于解码多音节对象信号的方法，多音节对象编码方法以及非终端计算机可读介质公开(公告)号：US20120213376A1
公开(公告)日：2012-08-23
申请号：US13451649
申请日：2012-04-20
申请人： Oliver HELLMUTH , Johannes HILPERT , Leonid TERENTIEV , Cornelia FALCH , Andreas HOELZER , Juergen HERRE
发明人： Oliver HELLMUTH , Johannes HILPERT , Leonid TERENTIEV , Cornelia FALCH , Andreas HOELZER , Juergen HERRE
IPC分类号： H04R5/00
CPC分类号： G10L19/04 , G10L19/008 , G10L19/20 , H04S3/002 , H04S2420/03 , H04S2420/07
摘要： An audio decoder for decoding a multi-audio-object signal having an audio signal of a first type and an audio signal of a second type encoded therein is described, the multi-audio-object signal having a downmix signal and side information, the side information having level information of the audio signals of the first and second types in a first predetermined time/frequency resolution, and a residual signal specifying residual level values in a second predetermined time/frequency resolution, the audio decoder having a processor for computing prediction coefficients based on the level information; and an up-mixer for up-mixing the downmix signal based on the prediction coefficients and the residual signal to obtain a first up-mix audio signal approximating the audio signal of the first type and/or a second up-mix audio signal approximating the audio signal of the second type.
摘要翻译： 描述用于解码具有第一类型的音频信号和其中编码的第二类型的音频信号的多音频对象信号的音频解码器，具有下混信号和侧信息的多音频对象信号 在第一预定时间/频率分辨率中具有第一和第二类型的音频信号的电平信息的信息，以及指定第二预定时间/频率分辨率中的剩余电平值的残差信号，该音频解码器具有用于计算预测系数的处理器 基于等级信息; 以及上混频器，用于基于预测系数和残差信号对混合信号进行混频，以获得近似第一类型的音频信号的第一上混合音频信号和/或接近第 第二种类型的音频信号。
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公开(公告)号：US20120195434A1
公开(公告)日：2012-08-02
申请号：US13442649
申请日：2012-04-09
IPC分类号： H04R5/00
CPC分类号： H04S5/005 , G10L19/008 , H04R5/04
摘要： A transient detector is provided for generating an ambience signal suitable for being emitted via loudspeakers for which there is no special loudspeaker signal to detect a transient period. A synthesis signal generator produces a synthesis signal which fulfils the transient condition on the one hand and the continuity condition for the synthesis signal on the other hand. A signal substituter will then substitute a portion of the examination signal by the synthesis signal to obtain an ambience signal for the surround channels.
摘要翻译： 提供了一种瞬态检测器，用于产生适于通过不具有特殊扬声器信号的扬声器发射以检测瞬态周期的环境信号。 合成信号发生器产生合成信号，一方面满足瞬态条件和另一方面合成信号的连续性条件。 然后，信号取代器将通过合成信号替换检查信号的一部分，以获得环绕声道的环境信号。
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