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1. 发明申请

WO2009049896A8 AUDIO CODING USING UPMIX 审中-公开
标题翻译：音频编码使用UPMIX
公开(公告)号：WO2009049896A8
公开(公告)日：2010-05-27
申请号：PCT/EP2008008800
申请日：2008-10-17
申请人： FRAUNHOFER GES FORSCHUNG , HELLMUTH OLIVER , HERRE JUERGEN , TERENTIEV LEONID , HOELZER ANDREAS , FALCH CORNELIA , HILPERT JOHANNES
发明人： HELLMUTH OLIVER , HERRE JUERGEN , TERENTIEV LEONID , HOELZER ANDREAS , FALCH CORNELIA , HILPERT JOHANNES
IPC分类号： G10L19/00
CPC分类号： G10L19/04 , G10L19/008 , G10L19/20 , H04S3/002 , H04S2420/03 , H04S2420/07
摘要： A method 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 consisting of a downmix signal (112) and side information, the side information comprising level information of the audio signal of the first type and the audio signal of the second type in a first predetermined time/frequency resolution, the method comprising computing a prediction coefficient matrix C based on the level information (OLD); and up-mixing the downmix signal based on the prediction coefficients 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, wherein the up-mixing yields the first up-mix signal S1 and/or the second up-mix signal S2 from the downmix signal d according to a computation representable by (formula) where the '1' denotes - depending on the number of channels of d - a scalar, or an identity matrix, and D-1 is a matrix uniquely determined by a downmix prescription according to which the audio signal of the first type and the audio signal of the second type are downmixed into the downmix signal, and which is also comprised by the side information, and H is a term being independent from d.
摘要翻译：描述了一种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方法，所述多音频对象信号由下混合信号（112）和侧信息所述侧信息包括第一类型的音频信号的电平信息和第一类型的音频信号在第一预定时间/频率分辨率中，所述方法包括基于电平信息（OLD）计算预测系数矩阵C; 以及基于所述预测系数对所述下混合信号进行上混合以获得近似所述第一类型的音频信号的第一上混合音频信号和/或接近所述第二类型的音频信号的第二混音音频信号，其中，根据通过（公式）表示的计算，上下混合产生来自下混合信号d的第一上混合信号S1和/或第二上混合信号S2，其中'1'表示 - 取决于d的信道数 - 标量或单位矩阵，D-1是由缩混处方唯一确定的矩阵，根据该矩阵，第一类型的音频信号和第二类型的音频信号被下混合到下混合信号中，并且其是也由边信息组成，H是独立于d的术语。

2. 发明申请

WO2009049896A1 AUDIO CODING USING UPMIX 审中-公开
标题翻译：音频编码使用UPMIX
公开(公告)号：WO2009049896A1
公开(公告)日：2009-04-23
申请号：PCT/EP2008008800
申请日：2008-10-17
申请人： FRAUNHOFER FESELLSCHAFT ZUR FO , HELLMUTH OLIVER , HERRE JUERGEN , TERENTIEV LEONID , HOELZER ANDREAS , FALCH CORNELIA , HILPERT JOHANNES
发明人： HELLMUTH OLIVER , HERRE JUERGEN , TERENTIEV LEONID , HOELZER ANDREAS , FALCH CORNELIA , HILPERT JOHANNES
IPC分类号： G10L19/00
CPC分类号： G10L19/04 , G10L19/008 , G10L19/20 , H04S3/002 , H04S2420/03 , H04S2420/07
摘要： A method 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 consisting of a downmix signal (112) and side information, the side information comprising level information of the audio signal of the first type and the audio signal of the second type in a first predetermined time/frequency resolution, the method comprising computing a prediction coefficient matrix C based on the level information (OLD); and up-mixing the downmix signal based on the prediction coefficients 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, wherein the up-mixing yields the first up-mix signal S1 and/or the second up-mix signal S2 from the downmix signal d according to a computation representable by (formula) where the "1" denotes - depending on the number of channels of d - a scalar, or an identity matrix, and D-1 is a matrix uniquely determined by a downmix prescription according to which the audio signal of the first type and the audio signal of the second type are downmixed into the downmix signal, and which is also comprised by the side information, and H is a term being independent from d.
摘要翻译：描述了一种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方法，所述多音频对象信号由下混合信号（112）和侧信息所述侧信息包括第一类型的音频信号的电平信息和第一类型的音频信号在第一预定时间/频率分辨率中，所述方法包括基于电平信息（OLD）计算预测系数矩阵C; 以及基于所述预测系数对所述下混合信号进行上混合以获得近似所述第一类型的音频信号的第一上混合音频信号和/或接近所述第二类型的音频信号的第二混音音频信号，其中，根据通过（公式）可表示的计算，上变频信号S1和/或第二上混合信号S2从下混信号d产生，其中“1”表示 - 取决于d的信道数 - 标量或单位矩阵，D-1是由缩混处方唯一确定的矩阵，根据该矩阵，第一类型的音频信号和第二类型的音频信号被下混合到下混合信号中，并且其是也由边信息组成，H是独立于d的术语。

3. 发明申请

WO2008046530A2 APPARATUS AND METHOD FOR MULTI -CHANNEL PARAMETER TRANSFORMATION 审中-公开
标题翻译：用于多通道参数变换的装置和方法
公开(公告)号：WO2008046530A2
公开(公告)日：2008-04-24
申请号：PCT/EP2007008682
申请日：2007-10-05
申请人： FRAUNHOFER GES FORSCHUNG , CODING TECH AB , KONINKL PHILIPS ELECTRONICS NV , HILPERT JOHANNES , LINZMEIER KARSTEN , HERRE JUERGEN , SPERSCHNEIDER RALPH , HOELZER ANDREAS , VILLEMOES LARS , ENGDEGARD JONAS , PURNHAGEN HEIKO , KJOERLING KRISTOFER , BREEBAART JEROEN , OOMEN WERNER
发明人： HILPERT JOHANNES , LINZMEIER KARSTEN , HERRE JUERGEN , SPERSCHNEIDER RALPH , HOELZER ANDREAS , VILLEMOES LARS , ENGDEGARD JONAS , PURNHAGEN HEIKO , KJOERLING KRISTOFER , BREEBAART JEROEN , OOMEN WERNER
CPC分类号： G10L19/173 , G10L19/008 , H04S2420/03
摘要： A parameter transformer generates level parameters, indicating an energy relation between a first and a second audio channel of a multi-channel audio signal associated to a multi-channel loudspeake configuration. The level parameter are generated based on object parameters for a plurality of audio objects associated to a down-mix channel, which is generated using object audio signals associated to the audio objects. The object parameters comprise an energy parameter indicating an energy of the object audio signal. To derive the coherence and the level parameters, a parameter generator is used, which combines the energy parameter and object rendering parameters, which depend on a desired rendering configuration.
摘要翻译：参数变换器生成水平参数，指示与多声道扬声器配置相关联的多声道音频信号的第一和第二音频声道之间的能量关系。基于与使用与音频对象相关联的对象音频信号生成的缩减混音通道相关联的多个音频对象的对象参数来生成级别参数。对象参数包括指示对象音频信号的能量的能量参数。为了导出相干性和水平参数，使用参数生成器，其将能量参数和对象渲染参数组合，这取决于期望的渲染配置。

4. 发明申请

WO2005036925A3 COMPATIBLE MULTI-CHANNEL CODING/DECODING 审中-公开
标题翻译：兼容的多通道编码/解码
公开(公告)号：WO2005036925A3
公开(公告)日：2005-07-14
申请号：PCT/EP2004010948
申请日：2004-09-30
申请人： FRAUNHOFER GES FORSCHUNG , HERRE JUERGEN , HILPERT JOHANNES , GEYERSBERGER STEFAN , HOELZER ANDREAS , SPENGER CLAUS
发明人： HERRE JUERGEN , HILPERT JOHANNES , GEYERSBERGER STEFAN , HOELZER ANDREAS , SPENGER CLAUS
IPC分类号： H04S3/00 , H04S3/02
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 (12), which are derived from the original channels. For a selected original channel of the original channels, channel side information are calculated (14) 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 (20) 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. Since the channel side information only occupy a low number of bits, and since the decoder does not use dematrixing, an efficient and high quality multi-channel extension for stereo players and enhanced multi-channel players is obtained.
摘要翻译：在处理具有至少三个原始声道的多声道音频信号时，提供了从原始声道导出的第一缩混声道和第二缩混声道（12）。对于原始频道的选定原始频道，计算（14）频道边信息，使得包括第一和第二降混频道的缩混频道或组合缩混频道在使用频道边信息进行加权时导致近似选定的原始频道。通道侧信息和第一和第二下混通道形成要传输到解码器的输出数据（20），解码器在低级解码器仅解码第一和第二下混通道的情况下或者在高级解码器基于降混声道和声道信息提供完整的多声道音频信号。由于信道边信息只占用较少的比特数，并且由于解码器不使用去矩阵，因此获得用于立体声播放器和增强型多声道播放器的高效和高质量多声道扩展。

5. 发明专利

NO338980B1 Multikanalsynthesiser og fremgangsmåte for å generere et flerkanalsutgangspunkt 未知
公开(公告)号：NO338980B1
公开(公告)日：2016-11-07
申请号：NO20070560
申请日：2007-01-30
申请人： FRAUNHOFER GES FORSCHUNG
发明人： HILPERT JOHANNES , HERRE JUERGEN , DISCH SASCHA , ERTEL CHRISTIAN , HOELZER ANDREAS
IPC分类号： G10L19/00 , H04S3/00

6. 发明专利

CA2760515C APPARATUS FOR PROVIDING ONE OR MORE ADJUSTED PARAMETERS FOR A PROVISION OF AN UPMIX SIGNAL REPRESENTATION 未知
公开(公告)号：CA2760515C
公开(公告)日：2015-06-02
申请号：CA2760515
申请日：2010-04-28
申请人： UNIV FRIEDRICH ALEXANDER ER , DOLBY INT AB , FRAUNHOFER GES FORSCHUNG
发明人： HERRE JUERGEN , HOELZER ANDREAS , TERENTIV LEONID , KASTNER THORSTEN , FALCH CORNELIA , PURNHAGEN HEIKO , ENGDEGARD JONAS , RIDDERBUSCH FALKO
IPC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 an object-related parametric information comprises a parameter adjuster. The parameter adjuster is configured to receive one or more input 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 the one or more input parameters and the object-related parametric information, such that a distortion of the upmix signal representation caused by the use of non-optimal parameters is reduced at least for input parameters deviating from optimal parameters by more than a predetermined deviation.

7. 发明专利

ES2452348T3 Aparato y procedimiento para sintetizar una señal de salida 未知
公开(公告)号：ES2452348T3
公开(公告)日：2014-04-01
申请号：ES08749081
申请日：2008-04-23
申请人： DOLBY SWEDEN AB , FRAUNHOFER GES FORSCHUNG , DOLBY INT AB
发明人： ENGDEGARD JONAS , VILLEMORS LARS , PURNHAGEN HEIKO , RESCH BARBARA , FALCH CORNELIA , HERRE JUERGEN , HILPERT JOHANNES , HOELZER ANDREAS , TERENTIEV LEONID
IPC分类号： G10L19/008 , H04S1/00
摘要： Aparato para sintetizar una señal de salida (350) que presenta una primera señal de canal audio y una segundaseñal de canal audio, comprendiendo el aparato; una etapa de descorrelación (356) destinada a generar una señaldescorrelacionada (358) que presenta una señal de canal 5 única descorrelacionada o una señal de premier canaldescorrelacionada y una señal de segundo canal descorrelacionada a partir de una señal de mezcla descendente,presentando la señal de mezcla descendente una primera señal de mezcla descendente de objeto audio y unasegunda señal de mezcla descendente de objeto audio, representando la señal de mezcla descendente una mezcladescendente de una pluralidad de señales de objeto audio según las informaciones de mezcla descendente (354); yun combinador (364) destinado a realizar una combinación ponderada de la señal de mezcla descendente (352) y dela señal descorrelacionada (358) con ayuda de factores de ponderación, donde el combinador (364) es operativopara calcular los factores de ponderación para la combinación ponderada a partir de las informaciones de mezcladescendente (354), a partir de las informaciones de renderización de objetivo (360) que indican las posicionesvirtuales de los objetos audio en una disposición de reproducción virtual, y de informaciones de objeto audioparamétricas (362) que describen los objetos audio, en el cual el combinador (364) es operativo para calcular unamatriz de mezcla C0 destinada a mezclar la primera señal de mezcla descendente de objeto audio y la segundaseñal de mezcla descendente de objeto audio a partir de la ecuación siguiente: donde Co es la matriz de mezcla, donde A es una matriz de renderización de objetivo que representa lasinformaciones de renderización de objetivo (360), donde D es una matriz de mezcla descendente que representa lasinformaciones de mezcla descendente (354), donde * representa una operación de transposición conjugadacompleja, y donde E es una matriz de covarianza de objeto que representa las informaciones de objeto audioparamétricas (362).

8. 发明专利

CA2775828A1 AUDIO SIGNAL DECODER, AUDIO SIGNAL ENCODER, METHOD FOR PROVIDING AN UPMIX SIGNAL REPRESENTATION, METHOD FOR PROVIDING A DOWNMIX SIGNAL REPRESENTATION, COMPUTER PROGRAM AND BITSTREAM USING A COMMON INTER-OBJECT-CORRELATION PARAMETER VALUE 未知
公开(公告)号：CA2775828A1
公开(公告)日：2011-04-07
申请号：CA2775828
申请日：2010-09-28
申请人： FRAUNHOFER GES FORSCHUNG , DOLBY INT AB
发明人： HERRE JUERGEN , HILPERT JOHANNES , HOELZER ANDREAS , ENGDEGARD JONAS , PURNHAGEN HEIKO
IPC分类号： G10L19/00 , G10L19/008 , G10L19/14 , G10L19/20
摘要： An audio signal decoder for providing an upmix signal representation on the basis of a downmix signal representation and an object-related parametric information and in dependence on a rendering information comprises an object parameter determinator. The object parameter determinator is configured to obtain inter-object-correlation values for plurality of pairs of audio objects. The object parameter determinator is configured to evaluate a bitstream signaling parameter in order to decide whether to evaluate individual inter-object-correlation bitstream parameter values to obtain inter-object-correlation values for a plurality of pairs of related audio objects, or to obtain inter-object-correlation value for a plurality of pairs of related audio objects using a common inter-object-correlation bitstream parameter value. The audio signal decoder also comprises a signal processor configured to obtain the upmix signal representation on the basis of the downmix signal representation and using the inter-object-correlation values for a plurality of pairs of related objects and the rendering information.

9. 发明专利

NO20070560L 未知
公开(公告)号：NO20070560L
公开(公告)日：2007-03-30
申请号：NO20070560
申请日：2007-01-30
申请人： FRAUNHOFER GES FORSCHUNG
发明人： HILPERT JOHANNES , HERRE JUERGEN , DISCH SASCHA , ERTEL CHRISTIAN , HOELZER ANDREAS
IPC分类号： G10L19/00 , H04S3/00
摘要： A multi-channel synthesizer includes a post processor for determining post processed reconstruction parameters or quantities derived from the reconstruction parameter for an actual time portion of the input signal so that the post processed reconstruction parameter or the post processed quantity is different from the corresponding quantized and inversely quantized reconstruction parameter in that the value of the post processed reconstruction parameter or the derived quantity is not bound by the quantization step size. A multi-channel reconstructor uses the post-processed reconstruction parameter for reconstructing the multi-channel output signal. By post processing reconstruction parameters in connection with multi-channel encoding/decoding allows a low data rate on the one hand and a high quality on the other hand, since strong changes in the reconstructed multi-channel output signal because of a large quantization step size for the reconstruction parameter, which is preferable because of low bit rate requirements, are reduced.

10. 发明专利

CA2569666A1 MULTI-CHANNEL SYNTHESIZER AND METHOD FOR GENERATING A MULTI-CHANNEL OUTPUT SIGNAL 未知
公开(公告)号：CA2569666A1
公开(公告)日：2006-01-12
申请号：CA2569666
申请日：2005-06-13
申请人： FRAUNHOFER GES FORSCHUNG
发明人： HERRE JUERGEN , HILPERT JOHANNES , DISCH SASCHA , ERTEL CHRISTIAN , HOELZER ANDREAS , SPENGER CLAUS-CHRISTIAN
IPC分类号： H04S3/00 , G10L19/00
摘要： A multi-channel synthesizer includes a post processor for determining post processed reconstruction parameters or quantities derived from the reconstruction parameter for an actual time portion of the input signal so that the post processed reconstruction parameter or the post processed quantity is different from the corresponding quantized and inversely quantized reconstruction parameter in that the value of the post processed reconstruction parameter or the derived quantity is not bound by the quantization step size. A multi-channel reconstructor uses the post-processed reconstruction parameter for reconstructing the multi-channel output signal. By post processing reconstruction parameters in connection with multi-channel encoding/decoding allows a low data rate on the one hand and a high quality on the other hand, since strong changes in the reconstructed multi-channel output signal because of a large quantization step size for the reconstruction parameter, which is preferable because of low bit rate requirements, are reduced.

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