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1. 发明申请

WO2013045691A1 PREDICTION-BASED FM STEREO RADIO NOISE REDUCTION 审中-公开
标题翻译：基于预测的FM立体声无线电噪声减少
公开(公告)号：WO2013045691A1
公开(公告)日：2013-04-04
申请号：PCT/EP2012/069323
申请日：2012-10-01
申请人： DOLBY INTERNATIONAL AB
发明人： PURNHAGEN, Heiko , SEHLSTROM, Leif , ENGDEGARD, Jonas
IPC分类号： H04B1/16 , G10L19/008
CPC分类号： H04B1/10 , G10L19/005 , G10L19/008 , G10L21/0224 , G10L21/0264 , H04B1/1676
摘要： The present document relates to audio signal processing, in particular to an apparatus and a corresponding method for improving the audio signal of an FM stereo radio receiver. In particular, the present document relates to a method and system for reducing the noise of a received FM stereo radio signal. An apparatus (2) configured to reduce noise of a received multi-channel FM radio signal is described, wherein the received multi-channel FM radio signal is representable as a received mid signal and a received side signal. The apparatus (2) comprises a parameter determination unit (77) configured to determine one or more parameters indicative of a correlation and/or decorrelation between the received mid signal and the received side signal; and a noise reduction unit (79) configured to generate a noise-reduced side signal from the received mid signal and not from the received side signal using the one or more parameters.
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装置和相应的方法。特别地，本文件涉及用于减少接收的FM立体声无线电信号的噪声的方法和系统。描述了被配置为降低接收的多频道FM无线电信号的噪声的装置（2），其中所接收的多频道FM无线电信号可被表示为接收的中间信号和接收侧信号。所述装置（2）包括参数确定单元（77），其被配置为确定指示所接收的中间信号和所接收的侧信号之间的相关性和/或去相关性的一个或多个参数; 以及噪声降低单元（79），被配置为使用所述一个或多个参数从所接收的中间信号而不是从所接收的侧信号产生噪声降低侧信号。

2. 发明申请

WO2012091935A9 REPETITION DETECTION IN MEDIA DATA 审中-公开
公开(公告)号：WO2012091935A9
公开(公告)日：2012-07-05
申请号：PCT/US2011/065080
申请日：2011-12-15
申请人： DOLBY LABORATORIES LICENSING CORPORATION , DOLBY INTERNATIONAL AB , RESCH, Barbara , RADHAKRISHNAN, Regunathan , BISWAS, Arijit , ENGDEGARD, Jonas
发明人： RESCH, Barbara , RADHAKRISHNAN, Regunathan , BISWAS, Arijit , ENGDEGARD, Jonas
IPC分类号： G10H1/00 , G06K9/00 , G06F17/30
摘要： Techniques for repetition detection in media data are provided. Media features of many different types may be extracted from the media data. Query sequences of fingerprints may be selected time intervals that begin at query times. Matched sequences of fingerprints may be determined. A set of offset values may be determined based on the matched sequences of fingerprints. This set of offset values may be further refined into a set of significant time points using a relatively targeted search and comparison method based on the media features of a second type extracted from the media data.

3. 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。

4. 发明申请

WO2012091936A1 SCENE CHANGE DETECTION AROUND A SET OF SEED POINTS IN MEDIA DATA 审中-公开
标题翻译：在媒体数据中的一组种子点之间的场景变化检测
公开(公告)号：WO2012091936A1
公开(公告)日：2012-07-05
申请号：PCT/US2011/065086
申请日：2011-12-15
申请人： DOLBY LABORATORIES LICENSING CORPORATION , DOLBY INTERNATIONAL AB , RESCH, Barbara , RADHAKRISHNAN, Regunathan , BISWAS, Arijit , ENGDEGARD, Jonas
发明人： RESCH, Barbara , RADHAKRISHNAN, Regunathan , BISWAS, Arijit , ENGDEGARD, Jonas
IPC分类号： G10H1/00 , G06K9/00 , G06F17/30
CPC分类号： H04R29/00 , G06F17/00 , G06F17/3053 , G10H1/0008 , G10H2210/061 , G10H2240/151 , G10L25/48
摘要： Techniques for scene change detection around seed points in media data are provided. Media features of many different types may be extracted from the media data. One or more statistical patterns of media features in a plurality of time-wise intervals around a plurality of seed time points of the media data may be determined using one or more types of features extractable from the media data. At least one of the one or more types of features comprises a type of features that captures structural properties, tonality including harmony and melody, timbre, rhythm, loudness, stereo mix, or a quantity of sound sources as related to the media data. A plurality of beginning scene change points and a plurality of ending scene change points in the media data may be detected, based on the one or more statistical patterns, for the plurality of seed time points in the media data.
摘要翻译：提供媒体数据中种子点周围场景变化检测技术。可以从媒体数据中提取许多不同类型的媒体特征。可以使用从媒体数据可提取的一种或多种类型的特征来确定围绕媒体数据的多个种子时间点的多个时间间隔中的媒体特征的一个或多个统计模式。一种或多种类型的特征中的至少一种包括捕获与媒体数据相关的结构性质，包括和声和旋律的音调，音色，节奏，响度，立体声混合或数量的声源的特征的类型。可以基于媒体数据中的多个种子时间点的一个或多个统计模式来检测媒体数据中的多个起始场景变化点和多个结束场景变化点。

5. 发明申请

WO2012089313A1 SONG TRANSITION EFFECTS FOR BROWSING 审中-公开
标题翻译：歌曲转换影响浏览
公开(公告)号：WO2012089313A1
公开(公告)日：2012-07-05
申请号：PCT/EP2011/006346
申请日：2011-12-15
申请人： DOLBY INTERNATIONAL AB , ENGDEGARD, Jonas
发明人： ENGDEGARD, Jonas
IPC分类号： G10H1/00 , G11B17/038 , G11B27/038 , H04H60/04
CPC分类号： H04S1/00 , G10H1/0008 , G10H2210/125 , G10H2210/131 , G10H2210/136 , G11B27/038 , H04H60/04 , H04S7/30 , H04S2400/11
摘要： In one aspect, a method of providing directive transitions between audio signals comprises associating a first/second browsing direction (A1, A2) with a first/second transition effect template. In response to a browsing action in one of said browsing directions, a transition is played in which an exit segment (S0-out1, S0-out2) and an entry segment (S1-in, S2-in) are mixed in accordance with the associated transition effect template. A further aspect proposes a method of transitioning between audio signals decoded from audio data including time markers encoded as audio metadata and indicating at least one section of the respective audio signal. The method includes retrieving time marking information in the audio data; extracting an exit segment (S0-out1, S0-out2) and an entry segment (S1-in, S2-in), wherein an endpoint of at least one of the segments is synchronized with a time marker; and playing a transition in which the exit and entry segments are mixed in accordance with a transition effect template.
摘要翻译：一方面，提供音频信号之间的指示转换的方法包括将第一/第二浏览方向（A1，A2）与第一/第二过渡效果模板相关联。响应于所述浏览方向之一中的浏览动作，根据所述浏览方向进行转换，其中退出段（S0-out1，S0-out2）和入口段（S1-in，S2-in）关联过渡效应模板。另一方面提出了一种在音频数据解码的音频信号之间进行转换的方法，包括被编码为音频元数据并指示相应音频信号的至少一个部分的时间标记。该方法包括：在音频数据中检索时间标记信息; 提取出口段（S0-out1，S0-out2）和入口段（S1-in，S2-in），其中至少一个段的端点与时间标记同步; 并且根据转换效果模板播放出口和进入段被混合的转换。

6. 发明申请

WO2011048010A1 METADATA TIME MARKING INFORMATION FOR INDICATING A SECTION OF AN AUDIO OBJECT 审中-公开
标题翻译： METADATA时间标记信息，用于指示音频对象的一部分
公开(公告)号：WO2011048010A1
公开(公告)日：2011-04-28
申请号：PCT/EP2010/065463
申请日：2010-10-14
申请人： DOLBY INTERNATIONAL AB , RESCH, Barbara , ENGDEGARD, Jonas
发明人： RESCH, Barbara , ENGDEGARD, Jonas
IPC分类号： G11B27/10 , G10L11/00
CPC分类号： G11B27/034 , G10L21/04 , G10L25/00
摘要： The application relates to a method for encoding time marking information within audio data. According to the method, time marking information is encoded as audio metadata within the audio data. The time marking information indicates at least one section of an audio object encoded in the audio data. E.g. the time marking information may specify a start position and an end position of the section or only a start position. The at least one section may be a characteristic part of the audio object, which allows instant recognition by listening. The time marking information encoded in the audio data enables instantaneous browsing to a certain section of the audio object. The application further relates to a method for decoding the time marking information encoded in the audio data.
摘要翻译：本申请涉及用于对音频数据内的时间标记信息进行编码的方法。根据该方法，时间标记信息被编码为音频数据内的音频元数据。时间标记信息表示在音频数据中编码的音频对象的至少一个部分。例如。时间标记信息可以指定该部分的开始位置和结束位置，或仅指定开始位置。所述至少一个部分可以是音频对象的特征部分，其允许通过收听进行即时识别。在音频数据中编码的时间标记信息使得能够对音频对象的某一部分进行瞬时浏览。本申请还涉及一种对音频数据中编码的时间标记信息进行解码的方法。

7. 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。

8. 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。

9. 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。

10. 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。

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