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1. 发明申请

US20070067162A1 Audio signal encoding or decoding 有权
标题翻译：音频信号编码或解码
公开(公告)号：US20070067162A1
公开(公告)日：2007-03-22
申请号：US10577106
申请日：2004-10-28
申请人： Lars Villemoes , Per Ekstrand , Heiko Purnhagen , Erik Schuijers , Fransiscus de Bont
发明人： Lars Villemoes , Per Ekstrand , Heiko Purnhagen , Erik Schuijers , Fransiscus de Bont
IPC分类号： G10L11/04
CPC分类号： G10L19/008 , G10L21/038
摘要： Encoding an audio signal is provided wherein the audio signal includes a first audio channel and a second audio channel, the encoding comprising subband filtering each of the first audio channel and the second audio channel in a complex modulated filterbank to provide a first plurality of subband signals for the first audio channel and a second plurality of subband signals for the second audio channel, downsampling each of the subband signals to provide a first plurality of downsampled subband signals and a second plurality of downsampled subband signals, further subband filtering at least one of the downsampled subband signals in a further filterbank in order to provide a plurality of sub-subband signals, deriving spatial parameters from the sub-subband signals and from those downsampled subband signals that are not further subband filtered, and deriving a single channel audio signal comprising derived subband signals derived from the first plurality of downsampled subband signals and the second plurality of downsampled subband signals. Further, decoding is provided wherein an encoded audio signal comprising an encoded single channel audio signal and a set of spatial parameters is decoded by decoding the encoded single channel audio channel to obtain a plurality of downsampled subband signals, further subband filtering at least one of the downsampled subband signals in a further filterbank in order to provide a plurality of sub-subband signals, and deriving two audio channels from the spatial parameters, the sub-subband signals and those downsampled subband signals that are not further subband filtered.
摘要翻译：提供对音频信号进行编码，其中音频信号包括第一音频通道和第二音频通道，该编码包括在复调制滤波器组中对第一音频通道和第二音频通道中的每一个进行子带滤波，以提供第一多个子带信号对于第一音频通道和用于第二音频通道的第二多个子带信号，对每个子带信号进行下采样以提供第一多个下采样子带信号和第二多个下采样子带信号，进一步子带滤波至少一个在另一个滤波器组中进行下采样的子带信号，以便提供多个子子带信号，从子子带信号和未进一步子带滤波的那些下采样子带信号导出空间参数，以及导出包括导出的从第一多个下采样子带信号导出的子带信号和第二多个下采样子带信号。此外，提供了解码，其中包括编码的单声道音频信号和一组空间参数的编码音频信号通过对编码的单声道音频声道进行解码以获得多个下采样的子带信号而被解码，进一步的子带滤波至少一个在另一滤波器组中进行下采样的子带信号，以便提供多个子子带信号，以及从空间参数，子子带信号和未进一步子带滤波的那些下采样子带信号导出两个音频信道。

2. 发明申请

US20110211703A1 Stereo Compatible Multi-Channel Audio Coding 有权
标题翻译：立体声兼容多声道音频编码
公开(公告)号：US20110211703A1
公开(公告)日：2011-09-01
申请号：US13040057
申请日：2011-03-03
申请人： Lars Villemoes , Heiko Purnhagen , Jonas Roeden , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers
发明人： Lars Villemoes , Heiko Purnhagen , Jonas Roeden , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers
IPC分类号： H04R5/00
CPC分类号： G10L19/008
摘要： A parametric representation 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 is used to generate the parametric representation by combining a one or more spatial parameters and a stereo parameter resulting in a parametric representation having a decoder usable stereo parameter and an information on the one or more spatial parameters that represents, together with the decoder usable stereo parameter, the one or more spatial parameters.
摘要翻译：当使用参数组合器时，具有适合于与单声道下混信号一起使用以计算多声道音频信号的重建的参数的多声道音频信号的参数表示可以以立体声向后兼容的方式有效地导出通过组合一个或多个空间参数和立体声参数来产生参数表示，该立体参数导致具有解码器可用立体声参数的参数表示以及与解码器可用立体参数一起表示的一个或多个空间参数的信息，一个或多个空间参数。

3. 发明授权

US07961890B2 Multi-channel hierarchical audio coding with compact side information 有权
标题翻译：具有紧凑侧面信息的多通道分层音频编码
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。

4. 发明授权

US08654985B2 Stereo compatible multi-channel audio coding 有权
标题翻译：立体声兼容多声道音频编码
公开(公告)号：US08654985B2
公开(公告)日：2014-02-18
申请号：US13040057
申请日：2011-03-03
申请人： Lars Villemoes , Heiko Purnhagen , Jonas Roeden , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers
发明人： Lars Villemoes , Heiko Purnhagen , Jonas Roeden , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers
IPC分类号： H04R5/00 , G10L19/00
CPC分类号： G10L19/008
摘要： A parametric representation 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 is used to generate the parametric representation by combining a one or more spatial parameters and a stereo parameter resulting in a parametric representation having a decoder usable stereo parameter and an information on the one or more spatial parameters that represents, together with the decoder usable stereo parameter, the one or more spatial parameters.
摘要翻译：当使用参数组合器时，具有适合于与单声道下混信号一起使用以计算多声道音频信号的重建的参数的多声道音频信号的参数表示可以以立体声向后兼容的方式有效地导出通过组合一个或多个空间参数和立体声参数来产生参数表示，该立体参数导致具有解码器可用立体声参数的参数表示以及与解码器可用立体参数一起表示的一个或多个空间参数的信息，一个或多个空间参数。

5. 发明授权

US07916873B2 Stereo compatible multi-channel audio coding 有权
标题翻译：立体声兼容多声道音频编码
公开(公告)号：US07916873B2
公开(公告)日：2011-03-29
申请号：US11286239
申请日：2005-11-23
申请人： Lars Villemoes , Heiko Purnhagen , Jonas Roeden , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers
发明人： Lars Villemoes , Heiko Purnhagen , Jonas Roeden , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers
IPC分类号： H04R5/00 , G10L19/00
CPC分类号： G10L19/008
摘要： A parametric representation 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 is used to generate the parametric representation by combining a one or more spatial parameters and a stereo parameter resulting in a parametric representation having a decoder usable stereo parameter and an information on the one or more spatial parameters that represents, together with the decoder usable stereo parameter, the one or more spatial parameters.
摘要翻译：当使用参数组合器时，具有适合于与单声道下混信号一起使用以计算多声道音频信号的重建的参数的多声道音频信号的参数表示可以以立体声向后兼容的方式有效地导出通过组合一个或多个空间参数和立体声参数来产生参数表示，该立体参数导致具有解码器可用立体声参数的参数表示以及与解码器可用立体参数一起表示的一个或多个空间参数的信息，一个或多个空间参数。

6. 发明申请

US20060233380A1 Multi-channel hierarchical audio coding with compact side information 有权
标题翻译：具有紧凑侧面信息的多通道分层音频编码
公开(公告)号：US20060233380A1
公开(公告)日：2006-10-19
申请号：US11314711
申请日：2005-12-21
申请人： Andreas Holzer , Jurgen Herre , Heiko Purnhagen , Kristofer Kjorling , Jonas Roden , Lars Villemoes , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers , Werner Oomen
发明人： Andreas Holzer , Jurgen Herre , Heiko Purnhagen , Kristofer Kjorling , Jonas Roden , 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。

7. 发明申请

US20060133618A1 Stereo compatible multi-channel audio coding 有权
标题翻译：立体声兼容多声道音频编码
公开(公告)号：US20060133618A1
公开(公告)日：2006-06-22
申请号：US11286239
申请日：2005-11-23
申请人： Lars Villemoes , Heiko Purnhagen , Jonas Roeden , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers
发明人： Lars Villemoes , Heiko Purnhagen , Jonas Roeden , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers
IPC分类号： H04R5/00
CPC分类号： G10L19/008
摘要： A parametric representation 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 is used to generate the parametric representation by combining a one or more spatial parameters and a stereo parameter resulting in a parametric representation having a decoder usable stereo parameter and an information on the one or more spatial parameters that represents, together with the decoder usable stereo parameter, the one or more spatial parameters.
摘要翻译：当使用参数组合器时，具有适合于与单声道下混信号一起使用以计算多声道音频信号的重建的参数的多声道音频信号的参数表示可以以立体声向后兼容的方式有效地导出通过组合一个或多个空间参数和立体声参数来产生参数表示，该立体参数导致具有解码器可用立体声参数的参数表示以及与解码器可用立体参数一起表示的一个或多个空间参数的信息，一个或多个空间参数。

8. 发明授权

US08054981B2 Energy dependent quantization for efficient coding of spatial audio parameters 有权
标题翻译：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。

9. 发明申请

US20080002842A1 Apparatus and method for generating multi-channel synthesizer control signal and apparatus and method for multi-channel synthesizing 有权
标题翻译：用于产生多声道合成器控制信号的装置和方法，用于多声道合成的装置和方法
公开(公告)号：US20080002842A1
公开(公告)日：2008-01-03
申请号：US11212395
申请日：2005-08-25
申请人： Matthias Neusinger , Jurgen Herre , Sascha Disch , Heiko Purnhagen , Kristofer Kjorling , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers , Werner Oomen
发明人： Matthias Neusinger , Jurgen Herre , Sascha Disch , Heiko Purnhagen , Kristofer Kjorling , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers , Werner Oomen
IPC分类号： H04B1/00
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.
摘要翻译：在编码器侧，分析多通道输入信号以获得平滑控制信息，该平滑控制信息将被解码器侧多信道合成用于平滑经量化的传输参数或从量化的传输参数导出的值，以提供改善主观音频质量，特别是对于缓慢移动的点源和具有诸如快速移动的正弦波的音调材料的快速移动的点源。

10. 发明授权

US08532999B2 Apparatus and method for generating a multi-channel synthesizer control signal, multi-channel synthesizer, method of generating an output signal from an input signal and machine-readable storage medium 有权
标题翻译：用于产生多声道合成器控制信号的装置和方法，多声道合成器，从输入信号产生输出信号的方法和机器可读存储介质
公开(公告)号：US08532999B2
公开(公告)日：2013-09-10
申请号：US13158863
申请日：2011-06-13
申请人： Matthias Neusinger , Juergen Herre , Sascha Disch , Heiko Purnhagen , Kristofer Kjoerling , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers , Werner Oomen
发明人： Matthias Neusinger , Juergen Herre , Sascha Disch , Heiko Purnhagen , Kristofer Kjoerling , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers , Werner Oomen
IPC分类号： G10L19/14 , G10L21/02 , G06F15/00 , G10L11/00 , G10L11/02
CPC分类号： G10L19/26 , G10L19/008 , G10L2019/0012 , H04S3/008
摘要： An apparatus and a method for generating a multi-channel synthesizer control signal, a multi-channel synthesizer, a method of generating an output signal from an input signal and a machine-readable storage medium are provided. 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.
摘要翻译：提供一种用于产生多声道合成器控制信号的装置和方法，多声道合成器，从输入信号产生输出信号的方法和机器可读存储介质。在编码器侧，分析多通道输入信号以获得平滑控制信息，该平滑控制信息将被解码器侧多信道合成用于平滑经量化的传输参数或从量化的传输参数导出的值，以提供改善主观音频质量，特别是对于缓慢移动的点源和具有诸如快速移动的正弦波的音调材料的快速移动的点源。

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