公开(公告)号：EP1754222B1

公开(公告)日：2007-11-14

申请号：EP06724214.9

申请日：2006-04-10

申请人： Coding Technologies AB ,  Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Koninklijke Philips Electronics N.V.

发明人： ROEDEN, Jonas ,  ENGDEGARD, Jonas ,  PURNHAGEN, Heiko ,  BREEBAART,Jeroen ,  SCHUIJERS, Erik ,  VAN DE PAR, Steven ,  HILPERT, Johannes ,  HERRE, Jürgen

IPC分类号： G10L19/00

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.

公开(公告)号：EP1738356A1

公开(公告)日：2007-01-03

申请号：EP06706309.9

申请日：2006-01-19

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Coding Technologies AB ,  Koninklijke Philips Electronics N.V.

发明人： NEUSINGER, Matthias ,  HERRE, Juergen ,  DISCH, Sascha ,  PURNHAGEN, Heiko ,  KJOERLING, Kristofer ,  ENGDEGARD, Jonas ,  BREEBAART, J., Koninklijke Philips Electronic N.V. ,  SCHUIJERS, E., Koninklijke Philips Electronic N.V. ,  OOMEN, W., Koninklijke Philips Electronic N.V.

IPC分类号： G10L19/14 ,  H04S5/00

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.

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

IPC分类号： G10L19/14 ,  G10L19/00

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.

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.

公开(公告)号：EP1869667A1

公开(公告)日：2007-12-26

申请号：EP06706552.4

申请日：2006-02-01

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Coding Technologies Sweden AB ,  Koninklijke Philips Electronics N.V.

发明人： HOELZER, Andreas ,  HERRE, Juergen ,  ROEDEN, Jonas ,  PURNHAGEN, Heiko ,  KJOERLING, Kristofer ,  ENGDEGARD, Jonas ,  BREEBAART, Jeroen, Koninklijke Philips Elec. N.V. ,  SCHUIJERS, Erik, Koninklijke Philips Elec. N.V. ,  OOMEN, Werner, Koninklijke Philips Elec. N.V. ,  VILLEMOES, Lars

IPC分类号： G10L19/00 ,  H04S3/00

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.

公开(公告)号：EP2686848A1

公开(公告)日：2014-01-22

申请号：EP12715631.3

申请日：2012-03-19

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Dolby International AB ,  Koninklijke Philips Electronics N.V.

发明人： NEUENDORF, Max ,  MULTRUS, Markus ,  DÖHLA, Stefan ,  PURNHAGEN, Heiko ,  DE BONT, Frans

IPC分类号： G10L19/14

CPC分类号： G10L19/008 ,  G10L19/00 ,  G10L19/167 ,  G10L19/18

摘要： A better compromise between a too high bitstream and decoding overhead on the one hand and flexibility of frame element positioning on the other hand is achieved by arranging that each of the sequence of frames of the bitstream comprises a sequence of N frame elements and, on the other hand, the bitstream comprises a configuration block comprising a field indicating the number of elements N and a type indication syntax portion indicating, for each element position of the sequence of N element positions, an element type out of a plurality of element types with, in the sequences of N frame elements of the frames, each frame element being of the element type indicated, by the type indication portion, for the respective element position at which the respective frame element is positioned within the sequence of N frame elements of the respective frame in the bitstream. Thus, the frames are equally structured in that each frame comprises the same sequence of N frame elements of the frame element type indicated by the type indication syntax portion, positioned within the bitstream in the same sequential order. This sequential order is commonly adjustable for the sequence of frames by use of the type indication syntax portion which indicates, for each element position of the sequence of N element positions, an element type out of a plurality of element types.

摘要翻译： 通过安排比特流的每个帧序列具有N个帧元素的序列，从而实现了一方面太高的比特流和解码开销与另一方面的帧元素定位的灵活性之间的更好的折中，并且在 比特流具有表示元素数N的字段的配置块和表示对于N个元素位置的序列的每个元素位置的多个元素类型中的元素类型的类型指示语法部分， 在帧的N个帧元素的序列中，每个帧元素是由类型指示部分针对相应元素位置指示的元素类型，其中相应的元素位置在相应的帧元素的N个帧元素的序列之内 帧中的比特流。

公开(公告)号：EP2686849A1

公开(公告)日：2014-01-22

申请号：EP12715632.1

申请日：2012-03-19

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Dolby International AB ,  Koninklijke Philips Electronics N.V.

发明人： NEUENDORF, Max ,  MULTRUS, Markus ,  DÖHLA, Stefan ,  PURNHAGEN, Heiko ,  DE BONT, Frans

IPC分类号： G10L19/14

CPC分类号： G10L19/008 ,  G10L19/00 ,  G10L19/167 ,  G10L19/18

摘要： Frame elements which shall be made available for skipping may are transmitted more efficiently by arranging that a default payload length information is transmitted separately within a configuration block, with the length information within the frame elements, in turn, being subdivided into a default payload length flag followed, if the default payload length flag is not set, by a payload length value explicitly coding the payload length of the respective frame element. However, if the default payload length flag is set, an explicit transmission of the payload length may be avoided. Rather, any frame element, the default extension payload length flag of which is set, has the default payload length and any frame element, the default extension payload length flag of which is not set, has a payload length corresponding to the payload length value. By this measure, transmission effectiveness is increased.

摘要翻译： 通过安排比特流的每个帧序列具有N个帧元素的序列，从而实现了一方面太高的比特流和解码开销与另一方面的帧元素定位的灵活性之间的更好的折中，并且在 比特流具有表示元素数N的字段的配置块和表示对于N个元素位置的序列的每个元素位置的多个元素类型中的元素类型的类型指示语法部分， 在帧的N个帧元素的序列中，每个帧元素是由类型指示部分针对相应元素位置指示的元素类型，其中相应的元素位置在相应的帧元素的N个帧元素的序列之内 帧中的比特流。

公开(公告)号：EP1738356B1

公开(公告)日：2012-11-28

申请号：EP06706309.9

申请日：2006-01-19

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Dolby International AB ,  Koninklijke Philips Electronics N.V.

发明人： NEUSINGER, Matthias ,  HERRE, Juergen ,  DISCH, Sascha ,  PURNHAGEN, Heiko ,  KJOERLING, Kristofer ,  ENGDEGARD, Jonas ,  BREEBAART, J., Koninklijke Philips Electronic N.V. ,  SCHUIJERS, E., Koninklijke Philips Electronic N.V. ,  OOMEN, W., Koninklijke Philips Electronic N.V.

IPC分类号： G10L19/14 ,  H04S5/00

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.

公开(公告)号：EP2489038A1

公开(公告)日：2012-08-22

申请号：EP10779542.9

申请日：2010-11-16

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Dolby International AB

发明人： ENGDEGARD, Jonas ,  PURNHAGEN, Heiko ,  HERRE, Juergen ,  FALCH, Cornelia ,  HELLMUTH, Oliver ,  TERENTIEV, Leon

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.

公开(公告)号：EP1869667B1

公开(公告)日：2019-05-08

申请号：EP06706552.4

申请日：2006-02-01

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Dolby International AB ,  Koninklijke Philips N.V.

发明人： HOELZER, Andreas ,  HERRE, Juergen ,  ROEDEN, Jonas ,  PURNHAGEN, Heiko ,  KJOERLING, Kristofer ,  ENGDEGARD, Jonas ,  BREEBAART, Jeroen, Koninklijke Philips Elec. N.V. ,  SCHUIJERS, Erik, Koninklijke Philips Elec. N.V. ,  OOMEN, Werner, Koninklijke Philips Elec. N.V. ,  VILLEMOES, Lars

IPC分类号： G10L19/008 ,  H04S3/00