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51. 发明授权

US08073144B2 Stereo balance interpolation 有权
标题翻译：立体声平衡插补
公开(公告)号：US08073144B2
公开(公告)日：2011-12-06
申请号：US11237133
申请日：2005-09-27
申请人： Fredrik Henn , Kristofer Kjorling , Lars Liljeryd , Jonas Roden , Jonas Engdegard
发明人： Fredrik Henn , Kristofer Kjorling , Lars Liljeryd , Jonas Roden , Jonas Engdegard
IPC分类号： H04R5/00
CPC分类号： G10L19/24 , G10L19/008 , G10L19/0204 , H04S1/007 , H04S3/002
摘要： The present invention provides improvements to prior art audio codecs that generate a stereo-illusion through post-processing of a received mono signal. These improvements are accomplished by extraction of stereo-image describing parameters at the encoder side, which are transmitted and subsequently used for control of a stereo generator at the decoder side. Furthermore, the invention bridges the gap between simple pseudo-stereo methods, and current methods of true stereo-coding, by using a new form of parametric stereo coding. A stereo-balance parameter is introduced, which enables more advanced stereo modes, and in addition forms the basis of a new method of stereo-coding of spectral envelopes, of particular use in systems where guided HFR (High Frequency Reconstruction) is employed. As a special case, the application of this stereo-coding scheme in scalable HFR-based codecs is described.
摘要翻译：本发明提供对现有技术的音频编解码器的改进，其通过对接收到的单声道信号的后处理产生立体幻象。这些改进通过提取在编码器侧描述参数的立体图像来实现，其被传输并随后用于在解码器侧对立体声发生器的控制。此外，本发明通过使用新形式的参数立体声编码来弥合简单伪立体声方法和现有的真实立体声编码方法之间的差距。引入立体声平衡参数，其实现更高级的立体声模式，并且还构成了频谱包络的立体编码的新方法的基础，在采用引导HFR（高频重建）的系统中特别有用。作为特殊情况，描述了这种立体声编码方案在可扩展的基于HFR的编解码器中的应用。

52. 发明授权

US07564978B2 Advanced processing based on a complex-exponential-modulated filterbank and adaptive time signalling methods 有权
标题翻译：基于复指数调制滤波器组和自适应时间信号方法的高级处理
公开(公告)号：US07564978B2
公开(公告)日：2009-07-21
申请号：US11698611
申请日：2007-01-26
申请人： Jonas Engdegard , Lars Villemoes
发明人： Jonas Engdegard , Lars Villemoes
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , G10L19/0204 , H03H17/0266 , H04S5/00 , H04S2420/03
摘要： A multi-channel decoder is provided for decoding a mono signal and an associated inter-channel coherence measure, the inter-channel coherence measure representing a coherence between a plurality of original channels, the mono signal being derived from the plurality of original channels.
摘要翻译：提供多通道解码器用于对单声道信号和相关联的信道间相干性测量进行解码，所述信道间相干测量表示多个原始信道之间的相干性，所述单声道信号从多个原始信道导出。

53. 发明授权

US07382886B2 Efficient and scalable parametric stereo coding for low bitrate audio coding applications 有权
标题翻译：低比特率音频编码应用的高效可扩展的参数立体声编码
公开(公告)号：US07382886B2
公开(公告)日：2008-06-03
申请号：US10483453
申请日：2002-07-10
申请人： Fredrik Henn , Kristofer Kjorling , Lars Liljeryd , Jonas Roden , Jonas Engdegard
发明人： Fredrik Henn , Kristofer Kjorling , Lars Liljeryd , Jonas Roden , Jonas Engdegard
IPC分类号： H04R5/00 , H04R5/02 , G10L19/00 , G10L21/00 , H04B1/20
CPC分类号： G10L19/24 , G10L19/008 , G10L19/0204 , H04S1/007 , H04S3/002
摘要： The present invention provides improvements to prior art audio codecs that generate a stereo-illusion through post-processing of a received mono signal. These improvements are accomplished by extraction of stereo-image describing parameters at the encoder side, which are transmitted and subsequently used for control of a stereo generator at the decoder side. Furthermore, the invention bridges the gap between simple pseudo-stereo methods, and current methods of true stereo-coding, by using a new form of parametric stereo coding. A stereo-balance parameter is introduced, which enables more advanced stereo modes, and in addition forms the basis of a new method of stereo-coding of spectral envelopes, of particular use in systems where guided HFR (High Frequency Reconstruction) is employed. As a special case, the application of this stereo-coding scheme in scalable HFR-based codecs is described.
摘要翻译：本发明提供对现有技术的音频编解码器的改进，其通过对接收到的单声道信号的后处理产生立体幻象。这些改进通过提取在编码器侧描述参数的立体图像来实现，其被传输并随后用于在解码器侧对立体声发生器的控制。此外，本发明通过使用新形式的参数立体声编码来弥合简单伪立体声方法和现有的真实立体声编码方法之间的差距。引入立体声平衡参数，其实现更高级的立体声模式，并且还构成了频谱包络的立体编码的新方法的基础，在采用引导HFR（高频重建）的系统中特别有用。作为特殊情况，描述了这种立体声编码方案在可扩展的基于HFR的编解码器中的应用。

54. 发明申请

US20060023888A1 Efficient and scalable parametric stereo coding for low bitrate audio coding applications 有权
公开(公告)号：US20060023888A1
公开(公告)日：2006-02-02
申请号：US11237133
申请日：2005-09-27
申请人： Fredrik Henn , Kristofer Kjorling , Lars Liljeryd , Jonas Roden , Jonas Engdegard
发明人： Fredrik Henn , Kristofer Kjorling , Lars Liljeryd , Jonas Roden , Jonas Engdegard
IPC分类号： H04R5/00 , H04H5/00
CPC分类号： G10L19/24 , G10L19/008 , G10L19/0204 , H04S1/007 , H04S3/002
摘要： The present invention provides improvements to prior art audio codecs that generate a stereo-illusion through post-processing of a received mono signal. These improvements are accomplished by extraction of stereo-image describing parameters at the encoder side, which are transmitted and subsequently used for control of a stereo generator at the decoder side. Furthermore, the invention bridges the gap between simple pseudo-stereo methods, and current methods of true stereo-coding, by using a new form of parametric stereo coding. A stereo-balance parameter is introduced, which enables more advanced stereo modes, and in addition forms the basis of a new method of stereo-coding of spectral envelopes, of particular use in systems where guided HFR (High Frequency Reconstruction) is employed. As a special case, the application of this stereo-coding scheme in scalable HFR-based codecs is described.

55. 发明申请

US20050053242A1 Efficient and scalable parametric stereo coding for low bitrate applications 有权
标题翻译：低比特率应用的高效可扩展的参数立体声编码
公开(公告)号：US20050053242A1
公开(公告)日：2005-03-10
申请号：US10483453
申请日：2002-07-10
申请人： Fredrik Henn , Kristofer Kjorling , Lars Liljeryd , Jonas Roden , Jonas Engdegard
发明人： Fredrik Henn , Kristofer Kjorling , Lars Liljeryd , Jonas Roden , Jonas Engdegard
IPC分类号： G10L19/008 , G10L19/02 , G10L19/14 , G10L19/24 , H04S20060101 , H04S1/00 , H04S3/00 , H04S5/00 , H04R5/00
CPC分类号： G10L19/24 , G10L19/008 , G10L19/0204 , H04S1/007 , H04S3/002
摘要： The present invention provides improvements to prior art audio codecs that generate a stereo-illusion through post-processing of a received mono signal. These improvements are accomplished by extraction of stereo-image describing parameters at the encoder side, which are transmitted and subsequently used for control of a stereo generator at the decoder side. Furthermore, the invention bridges the gap between simple pseudo-stereo methods, and current methods of true stereo-coding, by using a new form of parametric stereo coding. A stereo-balance parameter is introduced, which enables more advanced stereo modes, and in addition forms the basis of a new method of stereo-coding of spectral envelopes, of particular use in systems where guided HFR (High Frequency Reconstruction) is employed. As a special case, the application of this stereo-coding scheme in scalable HFR-based codecs is described.
摘要翻译：本发明提供对现有技术的音频编解码器的改进，其通过对接收到的单声道信号的后处理产生立体幻象。这些改进通过提取在编码器侧描述参数的立体图像来实现，其被传输并随后用于在解码器侧对立体声发生器的控制。此外，本发明通过使用新形式的参数立体声编码来弥合简单伪立体声方法和现有的真实立体声编码方法之间的差距。引入立体声平衡参数，其实现更高级的立体声模式，并且还构成了频谱包络的立体编码的新方法的基础，在采用引导HFR（高频重建）的系统中特别有用。作为特殊情况，描述了这种立体声编码方案在可扩展的基于HFR的编解码器中的应用。

56. 发明授权

US09313593B2 Ranking representative segments in media data 有权
标题翻译：在媒体数据中排列代表性细分
公开(公告)号：US09313593B2
公开(公告)日：2016-04-12
申请号：US13997866
申请日：2011-12-15
申请人： Barbara Resch , Regunathan Radhakrishnan , Arijit Biswas , Jonas Engdegard
发明人： Barbara Resch , Regunathan Radhakrishnan , Arijit Biswas , Jonas Engdegard
IPC分类号： H04R29/00 , G10H1/00 , G06F17/30 , G06F17/00 , G10L25/48
CPC分类号： H04R29/00 , G06F17/00 , G06F17/3053 , G10H1/0008 , G10H2210/061 , G10H2240/151 , G10L25/48
摘要： Techniques for ranking representative segments in media data are provided. Media features of many different types may be extracted from the media data. A plurality of ranking scores may be assigned to a plurality of candidate representative segments. Each individual candidate representative segment in the plurality of candidate representative segments comprises at least one scene in one or more statistical patterns in media features of the media data based on one or more types of features extractable from the media data. Each individual ranking score in the plurality of ranking scores may be assigned to an individual candidate representative segment in the plurality of candidate representative segments. A representative segment to be played to an end user may be selected from the candidate representative segments, based on the plurality of ranking scores.
摘要翻译：提供了在媒体数据中排列代表片段的技术。可以从媒体数据中提取许多不同类型的媒体特征。可以将多个排名得分分配给多个候选代表段。基于从媒体数据可提取的一种或多种类型的特征，多个候选代表段中的每个候选代表段包括媒体数据的媒体特征中的一个或多个统计模式中的至少一个场景。可以将多个排名得分中的每个个体排名分数分配给多个候选代表段中的个人候选代表段。可以基于多个排名得分从候选代表段中选择要向最终用户播放的代表段。

57. 发明申请

US20130287214A1 Scene Change Detection Around a Set of Seed Points in Media Data 有权
标题翻译：媒体数据中一组种子点的场景变化检测
公开(公告)号：US20130287214A1
公开(公告)日：2013-10-31
申请号：US13997860
申请日：2011-12-15
申请人： Barbara Resch , Regunathan Radhakrishnan , Arijit Biswas , Jonas Engdegard
发明人： Barbara Resch , Regunathan Radhakrishnan , Arijit Biswas , Jonas Engdegard
IPC分类号： H04R29/00
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。

58. 发明申请

US20130275421A1 Repetition Detection in Media Data 审中-公开
标题翻译：媒体数据中的重复检测
公开(公告)号：US20130275421A1
公开(公告)日：2013-10-17
申请号：US13997847
申请日：2011-12-15
申请人： Barbara Resch , Regunathan Radhakrishnan , Arijit Biswas , Jonas Engdegard
发明人： Barbara Resch , Regunathan Radhakrishnan , Arijit Biswas , Jonas Engdegard
IPC分类号： G06F17/30
CPC分类号： G06F16/24578 , G06F17/00 , G10H1/0008 , G10H2210/061 , G10H2240/151 , G10L25/48 , H04R29/00
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.
摘要翻译：提供了媒体数据中重复检测技术。可以从媒体数据中提取许多不同类型的媒体特征。指纹的查询序列可以是从查询时间开始的选择的时间间隔。可以确定匹配的指纹序列。可以基于匹配的指纹序列来确定一组偏移值。可以使用基于从媒体数据提取的第二类型的媒体特征的相对有针对性的搜索和比较方法，将这组偏移值进一步细化为一组有效时间点。

59. 发明授权

US08059826B2 Efficient and scalable parametric stereo coding for low bitrate audio coding applications 有权
公开(公告)号：US08059826B2
公开(公告)日：2011-11-15
申请号：US11237127
申请日：2005-09-27
申请人： Fredrik Henn , Kristofer Kjorling , Lars Liljeryd , Jonas Roden , Jonas Engdegard
发明人： Fredrik Henn , Kristofer Kjorling , Lars Liljeryd , Jonas Roden , Jonas Engdegard
IPC分类号： H03G3/00 , H04B3/20 , H04B15/00 , H04R5/00
CPC分类号： G10L19/24 , G10L19/008 , G10L19/0204 , H04S1/007 , H04S3/002
摘要： The present invention provides improvements to prior art audio codecs that generate a stereo-illusion through post-processing of a received mono signal. These improvements are accomplished by extraction of stereo-image describing parameters at the encoder side, which are transmitted and subsequently used for control of a stereo generator at the decoder side. Furthermore, the invention bridges the gap between simple pseudo-stereo methods, and current methods of true stereo-coding, by using a new form of parametric stereo coding. A stereo-balance parameter is introduced, which enables more advanced stereo modes, and in addition forms the basis of a new method of stereo-coding of spectral envelopes, of particular use in systems where guided HFR (High Frequency Reconstruction) is employed. As a special case, the application of this stereo-coding scheme in scalable HFR-based codecs is described.

60. 发明授权

US08965000B2 Method and apparatus for applying reverb to a multi-channel audio signal using spatial cue parameters 有权
标题翻译：使用空间提示参数将混响应用于多声道音频信号的方法和装置
公开(公告)号：US08965000B2
公开(公告)日：2015-02-24
申请号：US13132321
申请日：2009-12-16
申请人： Jonas Engdegard
发明人： Jonas Engdegard
IPC分类号： H03G3/00 , G10L19/008 , H04S7/00
CPC分类号： G10L19/008 , H04S7/305
摘要： A method and system for applying reverb to an M-channel downmixed audio input signal indicative of X individual audio channels, where X is greater than M. Typically, the method includes steps of: in response to spatial cue parameters indicative of spatial image of the downmixed input signal, generating Y discrete reverb channel signals, where each of the reverb channel signals at a time, t, is a linear combination of at least a subset of values of the individual audio channels at the time, t, and individually applying reverb to each of at least two of the reverb channel signals, thereby generating Y reverbed channel signals.
摘要翻译：一种用于将混响应用于指示X个独立音频通道的M通道下混音频输入信号的方法和系统，其中X大于M.通常，该方法包括以下步骤：响应于指示空间图像的空间提示参数产生Y离散混响通道信号，其中时间t的每个混响信道信号是时间t上各个音频通道的值的至少一个子集的线性组合，并且分别应用混响至少两个混响通道信号中的每一个，从而产生Y个回波通道信号。

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