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1.发明授权
公开(公告)号：EP1738353B1
公开(公告)日：2007-08-29
申请号：EP05797620.1
申请日：2005-10-28
发明人： VILLEMOES, Lars , KJÖRLING, Kristofer , PURNHAGEN, Heiko , RÖDEN, Jonas , BREEBAART, Jeroen , HOTHO, Gerard
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , G10L19/04 , H04S2420/03
摘要： A Multi-channel synthesiser for generating at least three output channels (110, 111, 112) using an input signal having at least one base channel, the base channel being derived from the original multi-channel signal (101, 102, 103), the input signal further including at least two different up-mixing parameters, and an up-mixer mode indication (1005) indicating, in a first state that a first up-mixing rule is to be performed, and, indicating, in a second state, that a different second up-mixing rule is to be performed, uses an up-mixer for up-mixing the at least one base channel using the at least two different up-mixing parameters based on the first or the second up-mixing rule in response to the up-mixer mode indication (1005) so that the at least three output channels (110, 111, 112) are obtained.
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公开(公告)号：EP1784819A1
公开(公告)日：2007-05-16
申请号：EP05798859.4
申请日：2005-10-31
发明人： PURNHAGEN, Heiko , BREEBAART, Jeroen , SCHUIJERS, Erik , VILLEMOES, Lars , RÖDEN, Jonas , ENGDEGARD, Jonas
IPC分类号： G10L19/00
CPC分类号： G10L19/008
摘要： A parametric representation (12) 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 (18) is used to generate the parametric representation (12) by combining one or more spatial parameters (20) and a stereo parameter (22) resulting in a parametric representation (12) having a decoder usable stereo parameter (24) and an information on the one or more spatial parameters (26) that represents, together with the decoder usable stereo parameter (24) , the one or more spatial parameters (20).
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3.发明公开
公开(公告)号：EP1730726A1
公开(公告)日：2006-12-13
申请号：EP05811028.9
申请日：2005-10-28
发明人： VILLEMOES, Lars , KJÖRLING, Kristofer , PURNHAGEN, Heiko , RÖDEN, Jonas , BREEBAART, Jeroen , HOTHO, Gerard
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , G10L19/04 , H04S2420/03
摘要： For a multi-channel reconstruction of audio signals based on at least one base channel, an energy measure is used for compensating energy losses due to an predictive upmix. The energy measure can be applied in the encoder or the decoder. Furthermore, a decorrelated signal is added to output channels generated by an energy-loss introducing upmix procedure. The energy of the decorrelated signal is smaller than or equal to an energy error introduced by the predictive upmix. Thus, problems occurring for prediction based up-mix methods such as up-mixing signals that are coded with High Frequency Reconstruction techniques are solved, so that the correct correlation between the up-mixed channels is obtained or the up-mix is adapted to arbitrary down-mixes.
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公开(公告)号：EP2082397B1
公开(公告)日：2011-12-28
申请号：EP07818758.0
申请日：2007-10-05
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , Dolby International AB , Koninklijke Philips Electronics N.V.
发明人： HILPERT, Johannes , LINZMEIER, Karsten , HERRE, Jürgen , SPERSCHNEIDER, Ralph , HÖLZER, Andreas , VILLEMOES, Lars , ENGDEGARD, Jonas , PURNHAGEN, Heiko , KJÖRLING, 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.
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公开(公告)号：EP2082397A2
公开(公告)日：2009-07-29
申请号：EP07818758.0
申请日：2007-10-05
申请人： Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. , Dolby Sweden AB , Koninklijke Philips Electronics N.V.
发明人： HILPERT, Johannes , LINZMEIER, Karsten , HERRE, Jürgen , SPERSCHNEIDER, Ralph , HÖLZER, Andreas , VILLEMOES, Lars , ENGDEGARD, Jonas , PURNHAGEN, Heiko , KJÖRLING, Kristofer , BREEBAART, Jeroen , OOMEN, Werner
IPC分类号： G10L19/14
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.
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6.发明公开METHOD OF AND DEVICE FOR GENERATING AND PROCESSING PARAMETERS REPRESENTING HRTFS 有权方法和装置创建和处理的HRTF表现参数
公开(公告)号：EP1927264A1
公开(公告)日：2008-06-04
申请号：EP06795919.7
申请日：2006-09-06
IPC分类号： H04S1/00
CPC分类号： H04S1/002 , H04R25/552 , H04S2420/01
摘要： A method of generating parameters representing Head-Related Transfer Functions, the method comprising the steps of a) sampling with a sample length (n) a first time-domain HRTF impulse response signal using a sampling rate (fs) yielding a first time- discrete signal, b) transforming the first time-discrete signal to the frequency domain yielding a first frequency-domain signal, c) splitting the first frequency-domain signal into sub-bands, and d) generating a first parameter of the sub-bands based on a statistical measure of values of the sub-bands.
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公开(公告)号：EP1999744A1
公开(公告)日：2008-12-10
申请号：EP06791592.6
申请日：2006-08-18
CPC分类号： H04S3/00 , H04S2420/03
摘要： An intermediate channel representation of a multi-channel signal can be reconstructed highly efficient and with high fidelity, when upmix parameters for upmixing a transmitted downmix signal to the intermediate channel representation are derived that allow for an upmix using the same upmixing algorithms as within the multi-channel reconstruction. This can be achieved when a parameter re-calculator is used to derive the upmix parameters that takes into account also parameters having information on channels that are not included in the intermediate channel representation.
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公开(公告)号：EP1784819B1
公开(公告)日：2008-04-30
申请号：EP05798859.4
申请日：2005-10-31
发明人： PURNHAGEN, Heiko , BREEBAART, Jeroen , SCHUIJERS, Erik , VILLEMOES, Lars , RÖDEN, Jonas , ENGDEGARD, Jonas
IPC分类号： G10L19/00
CPC分类号： G10L19/008
摘要： A parametric representation (12) 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 (18) is used to generate the parametric representation (12) by combining one or more spatial parameters (20) and a stereo parameter (22) resulting in a parametric representation (12) having a decoder usable stereo parameter (24) and an information on the one or more spatial parameters (26) that represents, together with the decoder usable stereo parameter (24) , the one or more spatial parameters (20).
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公开(公告)号：EP1738353A1
公开(公告)日：2007-01-03
申请号：EP05797620.1
申请日：2005-10-28
发明人： VILLEMOES, Lars , KJÖRLING, Kristofer , PURNHAGEN, Heiko , RÖDEN, Jonas , BREEBAART, Jeroen , HOTHO, Gerard
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , G10L19/04 , H04S2420/03
摘要： A Multi-channel synthesiser for generating at least three output channels (110, 111, 112) using an input signal having at least one base channel, the base channel being derived from the original multi-channel signal (101, 102, 103), the input signal further including at least two different up-mixing parameters, and an up-mixer mode indication (1005) indicating, in a first state that a first up-mixing rule is to be performed, and, indicating, in a second state, that a different second up-mixing rule is to be performed, uses an up-mixer for up-mixing the at least one base channel using the at least two different up-mixing parameters based on the first or the second up-mixing rule in response to the up-mixer mode indication (1005) so that the at least three output channels (110, 111, 112) are obtained.
摘要翻译： 一种多声道合成器，用于使用具有至少一个基本声道的输入信号来产生至少三个输出声道（110,111,112），所述基本声道是从原始多声道信号（101,102,103）导出的， 所述输入信号还包括至少两个不同的上混频参数，以及上混频器模式指示（1005），其在第一状态下指示要执行第一上混频规则，并且在第二状态中指示 ，要执行不同的第二上混合规则，基于第一或第二上混合规则，使用上混合器使用至少两个不同的上混合参数来上混合至少一个基本信道 响应于上混频器模式指示（1005），从而获得至少三个输出通道（110,111,112）。
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公开(公告)号：EP1999744B1
公开(公告)日：2012-11-28
申请号：EP06791592.6
申请日：2006-08-18
CPC分类号： H04S3/00 , H04S2420/03
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