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1. 发明申请

US20110264456A1 BINAURAL RENDERING OF A MULTI-CHANNEL AUDIO SIGNAL 有权
标题翻译：多通道音频信号的双向渲染
公开(公告)号：US20110264456A1
公开(公告)日：2011-10-27
申请号：US13080685
申请日：2011-04-06
申请人： Jeroen KOPPENS , Harald MUNDT , Leonid TERENTIEV , Cornelia FALCH , Johannes HILPERT , Oliver HELLMUTH , Lars VILLEMOES , Jan PLOGSTIES , Jeroen BREEBAART , Jonas ENGDEGARD
发明人： Jeroen KOPPENS , Harald MUNDT , Leonid TERENTIEV , Cornelia FALCH , Johannes HILPERT , Oliver HELLMUTH , Lars VILLEMOES , Jan PLOGSTIES , Jeroen BREEBAART , Jonas ENGDEGARD
IPC分类号： G10L19/00
CPC分类号： H04S3/004 , G10L19/008 , G10L19/20 , H04S1/005 , H04S2400/01 , H04S2420/01 , H04S2420/03
摘要： Binaural rendering a multi-channel audio signal into a binaural output signal is described. The multi-channel audio signal has a stereo downmix signal into which a plurality of audio signals are downmixed, and side information having a downmix information, as well as object level information of the plurality of audio signals and inter-object cross correlation information. Based on a first rendering prescription, a preliminary binaural signal is computed from the first and second channels of the stereo downmix signal. A decorrelated signal is generated as an perceptual equivalent to a mono downmix of the first and second channels of the stereo downmix signal being, however, decorrelated to the mono downmix. Depending on a second rendering prescription, a corrective binaural signal is computed from the decorrelated signal and the preliminary binaural signal is mixed with the corrective binaural signal to obtain the binaural output signal.
摘要翻译：描述了将双声道音频信号转换为双耳输出信号的双耳。多声道音频信号具有多个音频信号被混合到其中的立体声下混合信号，以及具有下混信息的侧信息以及多个音频信号的对象级信息和对象间相互关系信息。基于第一渲染处方，从立体声下混信号的第一和第二声道计算初步双耳信号。产生解相关的信号作为等同于立体声下混信号的第一和第二声道的单声道下混的感知，然而，与单声道下混相关。根据第二次呈现处方，根据解相关信号计算纠正性双耳信号，并将初步双耳信号与校正双耳信号混合以获得双耳输出信号。

2. 发明申请

US20090125314A1 AUDIO CODING USING DOWNMIX 有权
标题翻译：使用DOWNMIX的音频编码
公开(公告)号：US20090125314A1
公开(公告)日：2009-05-14
申请号：US12253515
申请日：2008-10-17
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： G10L19/00
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。

3. 发明申请

US20090125313A1 AUDIO CODING USING UPMIX 有权
公开(公告)号：US20090125313A1
公开(公告)日：2009-05-14
申请号：US12253442
申请日：2008-10-17
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： 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 audio signals of first and second types encoded therein, the multi-audio-object signal having a downmix signal and side information having level information of the audio signals of the first and second types in a first predetermined time/frequency resolution, the method including computing a prediction coefficient matrix C based on the level information; and up-mixing the downmix signal based on the prediction coefficients to obtain a first and/or a second up-mix audio signal approximating the audio signals of the first and second types, respectively, wherein up-mixing yields the first and/or second up-mix signals S1 and S2 from the downmix signal d according to a computation representable by ( S 1 S 2 ) = D - 1  { ( 1 C )  d + H } , with “1” denoting—depending on the number of channels of d—a scalar, or an identity matrix, and D−1 being a matrix uniquely determined by a downmix prescription according to which the audio signals of the first and second types are downmixed into the downmix signal, and which is also included by the side information, and H being a term independent from d.

4. 发明申请

US20120213376A1 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
标题翻译：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。

5. 发明申请

US20120259643A1 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
标题翻译：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。

6. 发明申请

US20120243690A1 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
标题翻译：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
IPC分类号： H04B15/00 , H04R5/00
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。

7. 发明申请

US20130046546A1 APPARATUS AND METHOD FOR MODIFYING AN INPUT AUDIO SIGNAL 有权
标题翻译：用于修改输入音频信号的装置和方法
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。

8. 发明申请

US20110261967A1 APPARATUS FOR GENERATING A MULTI-CHANNEL AUDIO SIGNAL 有权
标题翻译：用于产生多通道音频信号的装置
公开(公告)号：US20110261967A1
公开(公告)日：2011-10-27
申请号：US13155477
申请日：2011-06-08
申请人： Andreas WALTHER , Oliver HELLMUTH , Falko RIDDERBUSCH , Christian STOECKLMEIER
发明人： Andreas WALTHER , Oliver HELLMUTH , Falko RIDDERBUSCH , Christian STOECKLMEIER
IPC分类号： H04R5/00
CPC分类号： H04S3/002 , H04S2400/11
摘要： An apparatus for generating a multi-channel audio signal based on an input audio signal comprises a main signal upmixer, a section selector, a section signal upmixer and a combiner. The main signal upmixer is configured to provide a main multi-channel audio signal based on the input audio signal. The section selector is configured to select or not select a section of the input audio signal based on an analysis of the input audio signal. The selected section of the input audio signal, a processed selected section of the input audio signal or a reference signal associated with the selected section of the input audio signal is provided as section signal. The section signal upmixer is configured to provide a section upmix signal based on the section signal, and the combiner is configured to overlay the main multi-channel audio signal and the section upmix signal to obtain the multi-channel audio signal.
摘要翻译：一种用于基于输入音频信号产生多声道音频信号的装置包括主信号上混混器，分段选择器，分段信号上混合器和组合器。主信号上混合器被配置为基于输入音频信号提供主多声道音频信号。分段选择器被配置为基于对输入音频信号的分析来选择或不选择输入音频信号的一部分。输入音频信号的选择部分，输入音频信号的经处理的选择部分或与输入音频信号的所选部分相关联的参考信号被提供为部分信号。分段信号上混混合器被配置为基于分段信号提供分段上混信号，并且组合器被配置为覆盖主多声道音频信号和分段上混信号以获得多声道音频信号。

9. 发明申请

US20100014692A1 APPARATUS AND METHOD FOR GENERATING AUDIO OUTPUT SIGNALS USING OBJECT BASED METADATA 有权
标题翻译：使用基于对象的元数据生成音频输出信号的装置和方法
公开(公告)号：US20100014692A1
公开(公告)日：2010-01-21
申请号：US12248319
申请日：2008-10-09
申请人： Stephan SCHREINER , Wolfgang FIESEL , Matthias NEUSINGER , Oliver HELLMUTH , Ralph SPERSCHNEIDER
发明人： Stephan SCHREINER , Wolfgang FIESEL , Matthias NEUSINGER , Oliver HELLMUTH , Ralph SPERSCHNEIDER
IPC分类号： H04B1/00
CPC分类号： H04S3/008
摘要： An apparatus for generating at least one audio output signal representing a superposition of at least two different audio objects comprises a processor for processing an audio input signal to provide an object representation of the audio input signal, where this object representation can be generated by a parametrically guided approximation of original objects using an object downmix signal. An object manipulator individually manipulates objects using audio object based metadata referring to the individual audio objects to obtain manipulated audio objects. The manipulated audio objects are mixed using an object mixer for finally obtaining an audio output signal having one or several channel signals depending on a specific rendering setup.
摘要翻译：用于产生表示至少两个不同音频对象的叠加的至少一个音频输出信号的装置包括处理器，用于处理音频输入信号以提供音频输入信号的对象表示，其中该对象表示可以通过参数生成使用对象缩混信号对原始对象进行引导近似。对象操纵器使用基于音频对象的元数据单独地操纵对象，该元数据参考各个音频对象以获得被操纵的音频对象。使用对象混合器混合操纵的音频对象，以根据特定的渲染设置最终获得具有一个或多个通道信号的音频输出信号。

10. 发明申请

US20120308049A1 APPARATUS AND METHOD FOR GENERATING AUDIO OUTPUT SIGNALS USING OBJECT BASED METADATA 有权
标题翻译：使用基于对象的元数据生成音频输出信号的装置和方法
公开(公告)号：US20120308049A1
公开(公告)日：2012-12-06
申请号：US13585875
申请日：2012-08-15
申请人： Stephan SCHREINER , Wolfgang FIESEL , Matthias NEUSINGER , Oliver HELLMUTH , Ralph SPERSCHNEIDER
发明人： Stephan SCHREINER , Wolfgang FIESEL , Matthias NEUSINGER , Oliver HELLMUTH , Ralph SPERSCHNEIDER
IPC分类号： H04B1/00
CPC分类号： H04S3/008
摘要： An apparatus for generating at least one audio output signal representing a superposition of at least two different audio objects comprises a processor for processing an audio input signal to provide an object representation of the audio input signal, where this object representation can be generated by a parametrically guided approximation of original objects using an object downmix signal. An object manipulator individually manipulates objects using audio object based metadata referring to the individual audio objects to obtain manipulated audio objects. The manipulated audio objects are mixed using an object mixer for finally obtaining an audio output signal having one or several channel signals depending on a specific rendering setup.
摘要翻译：用于产生表示至少两个不同音频对象的叠加的至少一个音频输出信号的装置包括处理器，用于处理音频输入信号以提供音频输入信号的对象表示，其中该对象表示可以通过参数生成使用对象缩混信号对原始对象进行引导近似。对象操纵器使用基于音频对象的元数据单独地操纵对象，该元数据参考各个音频对象以获得被操纵的音频对象。使用对象混合器混合操纵的音频对象，以根据特定的渲染设置最终获得具有一个或多个通道信号的音频输出信号。

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