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1. 发明申请

WO2012025429A1 REDUCTION OF SPURIOUS UNCORRELATION IN FM RADIO NOISE 审中-公开
标题翻译：减少FM无线电噪声中的不寻常的不符合
公开(公告)号：WO2012025429A1
公开(公告)日：2012-03-01
申请号：PCT/EP2011/064077
申请日：2011-08-16
申请人： DOLBY INTERNATIONAL AB , ENGDEGARD, Jonas , PURNHAGEN, Heiko , SEHLSTROM, Leif
发明人： ENGDEGARD, Jonas , PURNHAGEN, Heiko , SEHLSTROM, Leif
IPC分类号： H04B1/16 , G10L19/00 , H04S1/00
CPC分类号： H04R5/04 , G10L19/008 , H04B1/1676 , H04S1/007
摘要： The document relates to audio signal processing, in particular to a system and a corresponding method for improving an audio signal of an FM stereo radio receiver, in this context, one aspect relates to the estimation of noise in a received side signal and the compensation of such noise in parametric stereo parameters. A system for generating a parametric stereo parameter from a two-channel audio signal is described. The two-channel audio signal is presentable as a mid signal and side signal representative of a corresponding left and right audio signal. The system comprises a noise estimation stage configured to determine an impact factor characteristic for the noise of the side signal; and a parametric stereo parameter estimation stage configured to determine the parametric stereo parameter; wherein the determining is based on the two-channel audio signal and the impact factor.
摘要翻译：本文件涉及音频信号处理，具体涉及用于改进FM立体声无线电接收机的音频信号的系统和相应方法，在本上下文中，一个方面涉及接收侧信号中的噪声估计和这样的噪声参数立体声参数。描述了一种用于从双声道音频信号产生参数立体声参数的系统。双声道音频信号可以作为表示相应的左和右音频信号的中间信号和侧面信号呈现。该系统包括噪声估计级，其被配置为确定侧信号的噪声的影响因子特性; 以及被配置为确定所述参数立体声参数的参数立体声参数估计级; 其中所述确定基于所述双声道音频信号和所述影响因子。

2. 发明申请

WO2012025431A2 CONCEALMENT OF INTERMITTENT MONO RECEPTION OF FM STEREO RADIO RECEIVERS 审中-公开
标题翻译： FM立体声无线电接收机的间接单声道接收
公开(公告)号：WO2012025431A2
公开(公告)日：2012-03-01
申请号：PCT/EP2011/064084
申请日：2011-08-16
申请人： DOLBY INTERNATIONAL AB , SEHLSTROM, Leif , PURNHAGEN, Heiko , ENGDEGARD, Jonas
发明人： SEHLSTROM, Leif , PURNHAGEN, Heiko , ENGDEGARD, Jonas
IPC分类号： G10L19/00
CPC分类号： H04R5/00 , G10L19/005 , G10L19/008 , G10L21/0364 , H04B1/1676 , H04H40/81
摘要： The present invention relates to audio signal processing. In particular, it relates to a method and system for reliably concealing intermittent mono reception of FM stereo radio receivers. The system comprises a parametric stereo parameter estimation stage configured to determine a first parametric stereo parameter based on a first frame of the received two-channel audio signal. The system further comprises a concealment detection stage configured to determine an energy of a side signal within the first signal frame; determine a number of following successive signal frames during which the energy of the side signal drops from a value above the high threshold to a value below a low threshold; determine that the two-channel audio signal following the first signal frame is a forced mono signal if the number of successive signal frames is below a frame threshold; and determine the parametric stereo parameter based on the first parametric stereo parameter.
摘要翻译：本发明涉及音频信号处理。特别涉及用于可靠地隐藏FM立体声无线电接收机的间歇单声道接收的方法和系统。该系统包括参数立体声参数估计级，其被配置为基于所接收的双声道音频信号的第一帧来确定第一参数立体声参数。所述系统还包括隐藏检测级，被配置为确定所述第一信号帧内的侧信号的能量; 确定随后的连续信号帧的数量，在此期间，侧信号的能量从高于高阈值的值下降到低于低阈值的值; 如果连续信号帧的数量低于帧阈值，则确定跟随第一信号帧的双声道音频信号是强制单声道信号; 并根据第一参数立体声参数确定参数立体声参数。

3. 发明申请

WO2010125104A1 APPARATUS FOR PROVIDING ONE OR MORE ADJUSTED PARAMETERS FOR A PROVISION OF AN UPMIX SIGNAL REPRESENTATION ON THE BASIS OF A DOWNMIX SIGNAL REPRESENTATION, AUDIO SIGNAL DECODER, AUDIO SIGNAL TRANSCODER, AUDIO SIGNAL ENCODER, AUDIO BITSTREAM, METHOD AND COMPUTER PROGRAM USING AN OBJECT-RELATED PARAMETRIC INFORMATION 审中-公开
标题翻译：提供一个或多个调整参数的装置，用于提供基于下标信号表示，音频信号解码器，音频信号转换器，音频信号编码器，音频比特，方法AN的UPMIX信号表示
公开(公告)号：WO2010125104A1
公开(公告)日：2010-11-04
申请号：PCT/EP2010/055717
申请日：2010-04-28
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , DOLBY INTERNATIONAL AB , FRIEDRICH-ALEXANDER-UNIVERSITÄT ERLANGEN-NÜRNBERG , HERRE, Jürgen , HOELZER, Andreas , TERENTIEV, Leonid , KASTNER, Thorsten , FALCH, Cornelia , PURNHAGEN, Heiko , ENGDEGARD, Jonas
发明人： HERRE, Jürgen , HOELZER, Andreas , TERENTIEV, Leonid , KASTNER, Thorsten , FALCH, Cornelia , PURNHAGEN, Heiko , ENGDEGARD, Jonas
IPC分类号： G10L19/00 , G10L19/14
CPC分类号： G10L19/008 , G10L19/20
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.
摘要翻译：基于降混信号表示和对象相关参数信息提供用于提供上混合信号表示的一个或多个调整参数的装置包括参数调整器。参数调整器被配置为接收一个或多个输入参数并且在其基础上提供一个或多个调整的参数。参数调整器被配置为根据一个或多个输入参数和对象相关参数信息来提供一个或多个经调整的参数，使得由使用非最优参数引起的上混信号表示的失真减少至少对于偏离最佳参数的输入参数大于预定偏差。

4. 发明申请

WO2011061174A1 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 审中-公开
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，用于提供表示多信道音频信号的一种BITSTREAM的装置，方法，计算机程序和表示多个信道的BITSTREAM
公开(公告)号：WO2011061174A1
公开(公告)日：2011-05-26
申请号：PCT/EP2010/067550
申请日：2010-11-16
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , DOLBY INTERNATIONAL AB , ENGDEGARD, Jonas , PURNHAGEN, Heiko , HERRE, Juergen , FALCH, Cornelia , HELLMUTH, Oliver , TERENTIEV, Leonid
发明人： ENGDEGARD, Jonas , PURNHAGEN, Heiko , HERRE, Juergen , FALCH, Cornelia , HELLMUTH, Oliver , TERENTIEV, Leonid
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 comprises 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 comprises 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：一种用于在用户指定的渲染矩阵上独立地基于包含在音频内容的位流表示中的下混信号表示和对象相关参数信息来提供上混合信号表示的装置，该装置包括：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。该装置还包括信号处理器，该信号处理器被配置为基于下混信号表示和使用修改的渲染矩阵的对象相关参数信息获得上混信号表示。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。

5. 发明申请

WO2011048067A1 APPARATUS FOR PROVIDING AN UPMIX SIGNAL REPRESENTATION ON THE BASIS OF A DOWNMIX SIGNAL REPRESENTATION, APPARATUS FOR PROVIDING A BITSTREAM REPRESENTING A MULTICHANNEL AUDIO SIGNAL, METHODS, COMPUTER PROGRAM AND BITSTREAM USING A DISTORTION CONTROL SIGNALING 审中-公开
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的多通道音频信号，方法，计算机程序和比特的表达的装置
公开(公告)号：WO2011048067A1
公开(公告)日：2011-04-28
申请号：PCT/EP2010/065671
申请日：2010-10-19
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E. V. , DOLBY INTERNATIONAL AB , ENGDEGARD, Jonas , PURNHAGEN, Heiko , HERRE, Juergen , TERENTIEV, Leonid , FALCH, Cornelia , HELLMUTH, Oliver
发明人： ENGDEGARD, Jonas , PURNHAGEN, Heiko , HERRE, Juergen , TERENTIEV, Leonid , FALCH, Cornelia , HELLMUTH, Oliver
IPC分类号： G10L19/00
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, comprises 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：一种用于根据下混合信号表示和包含在音频内容的比特流表示中并且根据呈现信息包括的对象相关参数信息来提供上混合信号表示的装置，包括：失真限制器，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。

6. 发明申请

WO2011039195A1 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 审中-公开
标题翻译：音频信号解码器，音频信号编码器，用于提供UPMIX信号表示的方法，使用公共对象相关参数值提供下行信号表示的方法，计算机程序和比特
公开(公告)号：WO2011039195A1
公开(公告)日：2011-04-07
申请号：PCT/EP2010/064379
申请日：2010-09-28
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , DOLBY INTERNATIONAL AB , HERRE, Jürgen , HILPERT, Johannes , HÖLZER, Andreas , ENGDEGARD, Jonas , PURNHAGEN, Heiko
发明人： HERRE, Jürgen , HILPERT, Johannes , HÖLZER, Andreas , ENGDEGARD, Jonas , PURNHAGEN, Heiko
IPC分类号： G10L19/00 , G10L19/14
CPC分类号： G10L19/008 , G10L19/005 , G10L19/20 , H04S3/02 , H04S5/005 , H04S2420/03
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.
摘要翻译：音频信号解码器，用于根据降混信号表示和对象相关参数信息提供上混合信号表示，并且根据呈现信息，包括对象参数确定器。对象参数确定器被配置为获得多对音频对象的对象间相关值。对象参数确定器被配置为评估比特流信令参数，以便决定是否评估各个对象间相关比特流参数值以获得多对相关音频对象的对象间相关值， - 使用公共对象间相关比特流参数值的多对相关音频对象的对象相关值。音频信号解码器还包括信号处理器，该信号处理器被配置为基于下混信号表示获得上混合信号表示，并且使用多对相关对象和呈现信息的对象间相关值。

7. 发明申请

WO2011029570A8 IMPROVEMENT OF AN AUDIO SIGNAL OF AN FM STEREO RADIO RECEIVER BY USING PARAMETRIC STEREO 审中-公开
标题翻译：用参数立体声改进FM立体声无线电接收机的音频信号
公开(公告)号：WO2011029570A8
公开(公告)日：2011-03-17
申请号：PCT/EP2010/005481
申请日：2010-09-07
申请人： DOLBY INTERNATIONAL AB , ENGDEGARD, Jonas , PURNHAGEN, Heiko , ROEDEN, Karl, Jonas
发明人： ENGDEGARD, Jonas , PURNHAGEN, Heiko , ROEDEN, Karl, Jonas
IPC分类号： H04S1/00 , H04S5/00 , H04H40/45 , H04B1/16 , H04H40/81
摘要： The invention relates to an apparatus for improving a stereo audio signal of an FM stereo radio receiver. The apparatus comprises a parametric stereo (PS) parameter estimation stage. The parameter estimation stage is configured to determine one or more parametric stereo parameters based on the stereo audio signal in a frequency-variant or frequency-invariant manner. Preferably, these PS parameters are time- and frequency-variant. Moreover, the apparatus comprises an upmix stage. The upmix stage is configured to generate the improved stereo signal based on a first audio signal and the one or more parametric stereo parameters. The first audio signal is obtained from the stereo audio signal, e.g. by a downmix operation in a downmix stage. The PS parameter estimation stage may be part of a PS encoder. The upmix stage may be part of a PS decoder.
摘要翻译：本发明涉及一种用于改善FM立体声无线电接收机的立体声音频信号的设备。该设备包括参数立体声（PS）参数估计阶段。参数估计级被配置为以频率变化或频率不变的方式基于立体声音频信号确定一个或多个参数立体声参数。优选地，这些PS参数是时间和频率变化的。此外，该设备包括上混阶段。上混级被配置为基于第一音频信号和一个或多个参数立体声参数来生成改进的立体声信号。第一音频信号是从立体声音频信号获得的，例如，通过缩混阶段的缩混操作。 PS参数估计阶段可以是PS编码器的一部分。上混阶段可能是PS解码器的一部分。

8. 发明申请

WO2006108456A1 APPARATUS AND METHOD FOR GENERATING MULTI-CHANNEL SYNTHESIZER CONTROL SIGNAL AND APPARATUS AND METHOD FOR MULTI-CHANNEL SYNTHESIZING 审中-公开
标题翻译：用于产生多通道合成器控制信号的装置和方法以及用于多通道合成的装置和方法
公开(公告)号：WO2006108456A1
公开(公告)日：2006-10-19
申请号：PCT/EP2006/000455
申请日：2006-01-19
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , CODING TECHNOLOGIES AB , KONINKLIJKE PHILIPS ELECTRONICS N.V. , NEUSINGER, Matthias , HERRE, Juergen , DISCH, Sascha , PURNHAGEN, Heiko , KJOERLING, Kristofer , ENGDEGARD, Jonas , BREEBAART, Jeroen , SCHUIJERS, Erik , OOMEN, Werner
发明人： NEUSINGER, Matthias , HERRE, Juergen , DISCH, Sascha , PURNHAGEN, Heiko , KJOERLING, Kristofer , ENGDEGARD, Jonas , BREEBAART, Jeroen , SCHUIJERS, Erik , OOMEN, Werner
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 audio input signal is analyzed for obtaining smoothing control information, which is to be used by a decoder-side multi-channel audio 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，分析多声道音频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声道音频合成用于平滑量化的发送参数或从量化的发送参数导出的值提供了改进的主观音频质量，特别是用于缓慢移动的点源和具有诸如快速移动的正弦曲线之类的音调材料的快速移动的点源。

9. 发明申请

WO2005101371A1 METHOD FOR REPRESENTING MULTI-CHANNEL AUDIO SIGNALS 审中-公开
标题翻译：用于表示多通道音频信号的方法
公开(公告)号：WO2005101371A1
公开(公告)日：2005-10-27
申请号：PCT/EP2005/003849
申请日：2005-04-12
申请人： CODING TECHNOLOGIES AB , PURNHAGEN, Heiko , VILLEMOES, Lars , ENGDEGARD, Jonas , RÖDÉN, Jonas , KJÖRLING, Kristofer
发明人： PURNHAGEN, Heiko , VILLEMOES, Lars , ENGDEGARD, Jonas , RÖDÉN, Jonas , KJÖRLING, Kristofer
IPC分类号： G10L19/00
CPC分类号： H04R5/00 , G10L19/008 , G10L19/0204 , G10L19/032 , G10L19/167 , G10L19/26 , H04S3/02 , H04S5/00 , H04S2400/01 , H04S2400/03
摘要： A multi-channel input signal having at least three original channels is represented by a parameter representation of the multi-channel signal. A first balance parameter (r1), a first coherence parameter, or a first inter-channel time difference between a first channel pair and a second bal-ance parameter (r2), or a second coherence parameter, or a second inter-channel time difference parameter between a second channel pair are calculated. This set of parameters is the parameter representation of the original signals. The first channel pair (102, 104) has two channels, which are different from two channels of a second channel pair (102, 104, 103). Furthermore, each channel of the two chan-nel pairs is one of the original channels, or a weighted combination of the original channels, and the first channel pair and the second channel pair include information on the three original channels. For multi-channel reconstruction purposes, the parameters are used in addition to down-mixing information to generate a selectable number of out-put channels in a scalable fashion.
摘要翻译：具有至少三个原始信道的多信道输入信号由多信道信号的参数表示来表示。第一平衡参数（r1），第一相干参数或第一通道对和第二平衡参数（r2）之间的第一通道间时间差或第二相干参数或第二通道间时间计算第二通道对之间的差参数。这组参数是原始信号的参数表示。第一信道对（102,104）具有与第二信道对（102,104,103）的两个信道不同的两个信道。此外，两个通道对的每个通道是原始通道之一或原始通道的加权组合，并且第一通道对和第二通道对包括关于三个原始通道的信息。对于多通道重建的目的，除了降混信息之外还使用参数以便以可缩放的方式生成可选数量的输出通道。

10. 发明申请

WO2008131903A1 APPARATUS AND METHOD FOR SYNTHESIZING AN OUTPUT SIGNAL 审中-公开
标题翻译：用于合成输出信号的装置和方法
公开(公告)号：WO2008131903A1
公开(公告)日：2008-11-06
申请号：PCT/EP2008/003282
申请日：2008-04-23
申请人： DOLBY SWEDEN AB , FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , ENGDEGARD, Jonas , VILLEMORS, Lars , PURNHAGEN, Heiko , RESCH, Barbara , FALCH, Cornelia , HERRE, Juergen , HILPERT, Johannes , HOELZER, Andreas , TERENTIEV, Leonid
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： G10L19/00 , H04S3/02
CPC分类号： H04S1/007 , G10L19/008 , H04S2400/01
摘要： An apparatus for synthesizing a rendered output signal having a first audio channel and a second audio channel includes a decorrelator stage (356) for generating a decorrelator signal based on a downmix signal, and a combiner (364) for performing a weighted combination of the downmix signal and a decorrelated signal based on parametric audio object information (362), downmix information (354) and target rendering information (360). The combiner solves the problem of optimally combining matrixing with decorrelation for a high quality stereo scene reproduction of a number of individual audio objects using a multichannel downmix.
摘要翻译：一种用于合成具有第一音频频道和第二音频频道的渲染输出信号的装置，包括用于基于降混信号产生去相关器信号的去相关器级（356）和用于执行下混合的加权组合的组合器（364）信号和基于参数音频对象信息（362），下混信息（354）和目标渲染信息（360）的去相关信号。组合器解决了使用多通道下混合将矩阵化与去相关最佳组合以用于多个单独音频对象的高质量立体场景再现的问题。

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