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11.发明申请公开(公告)号：US20060023888A1
公开(公告)日：2006-02-02
申请号：US11237133
申请日：2005-09-27
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.
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12.发明申请Efficient and scalable parametric stereo coding for low bitrate applications 有权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
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。
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公开(公告)号：US08346564B2
公开(公告)日：2013-01-01
申请号：US11909730
申请日：2006-03-16
申请人： Gerard Herman Hotho , Dirk Jeroen Breebaart , Erik Gosuinus Petrus Schuijers , Albertus Cornelis Den Brinker , Lars Falck Villemoes , Heiko Purnhagen , Karl Jonas Roden
发明人： Gerard Herman Hotho , Dirk Jeroen Breebaart , Erik Gosuinus Petrus Schuijers , Albertus Cornelis Den Brinker , Lars Falck Villemoes , Heiko Purnhagen , Karl Jonas Roden
CPC分类号： G10L19/008 , H04R2420/07 , H04S3/008
摘要： A multi-channel audio encoder (10) for encoding a multi-channel audio signal (101), e.g. a 5.1 channel audio signal, into a spatial down-mix (102), e.g. a stereo signal, and associated parameters (104, 105). The encoder (10) comprises first and second units (110, 120). The first unit (110) encodes the multi-channel audio signal (101) into the spatial down-mix (102) and parameters (104). These parameters (104) enable a multi-channel decoder (20) to reconstruct the multi-channel audio signal (203) from the spatial down-mix (102). The second unit (120) generates, from the spatial down-mix (102), parameters (105) that enable the decoder to reconstruct the spatial down-mix (202) from an alternative down-mix (103), e.g. a so-called artistic down-mix that has been manually mixed in a sound studio. In this way, the decoder (20) can efficiently deal with a situation in which an alternative down-mix (103) is received instead of the regular spatial, down-mix (102). In the decoder (20), first the spatial down-mix (202) is reconstructed from the alternative down-mix (103) and the parameters (105). Next, the spatial down-mix (202) is decoded into the multi-channel audio signal (203).
摘要翻译： 一种用于对多声道音频信号（101）进行编码的多声道音频编码器（10）。 5.1声道音频信号转换成空间缩混（102）。 立体声信号和相关参数（104,105）。 编码器（10）包括第一和第二单元（110,120）。 第一单元（110）将多声道音频信号（101）编码成空间缩混（102）和参数（104）。 这些参数（104）使得多声道解码器（20）能够从空间缩混（102）重建多声道音频信号（203）。 第二单元（120）从空间缩混（102）生成参数（105），使参数（105）能够使解码器从替代的下混合（103）重构空间缩混（202）。 所谓的艺术混合，已经在一个健全的工作室手工混合。 以这种方式，解码器（20）可以有效地处理接收替代的下混合（103）而不是常规的空间，混合（102）的情况。 在解码器（20）中，首先，从替代的下混合（103）和参数（105）重构空间缩混（202）。 接下来，空间缩混（202）被解码为多声道音频信号（203）。
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14.发明授权公开(公告)号：US08059826B2
公开(公告)日：2011-11-15
申请号：US11237127
申请日：2005-09-27
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.
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公开(公告)号：US20100153097A1
公开(公告)日：2010-06-17
申请号：US11909730
申请日：2006-03-16
申请人： Gerard Herman Hotho , Dirk Jeroen Breebart , Erik Gosuinus Petrus , Albertus Cornelis Den Brinker , Lars Falck Villemoes , Heiko Purnhagen , Karl Jonas Roden
发明人： Gerard Herman Hotho , Dirk Jeroen Breebart , Erik Gosuinus Petrus , Albertus Cornelis Den Brinker , Lars Falck Villemoes , Heiko Purnhagen , Karl Jonas Roden
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , H04R2420/07 , H04S3/008
摘要： A multi-channel audio encoder (10) for encoding a multi-channel audio signal (101), e.g. a 5.1 channel audio signal, into a spatial down-mix (102), e.g. a stereo signal, and associated parameters (104, 105). The encoder (10) comprises first and second units (110, 120). The first unit (110) encodes the multi-channel audio signal (101) into the spatial down-mix (102) and parameters (104). These parameters (104) enable a multi-channel decoder (20) to reconstruct the multi-channel audio signal (203) from the spatial down-mix (102). The second unit (120) generates, from the spatial down-mix (102), parameters (105) that enable the decoder to reconstruct the spatial down-mix (202) from an alternative down-mix (103), e.g. a so-called artistic down-mix that has been manually mixed in a sound studio. In this way, the decoder (20) can efficiently deal with a situation in which an alternative down-mix (103) is received instead of the regular spatial, down-mix (102). In the decoder (20), first the spatial down-mix (202) is reconstructed from the alternative down-mix (103) and the parameters (105). Next, the spatial down-mix (202) is decoded into the multi-channel audio signal (203).
摘要翻译： 一种用于对多声道音频信号（101）进行编码的多声道音频编码器（10）。 5.1声道音频信号转换成空间缩混（102）。 立体声信号和相关参数（104,105）。 编码器（10）包括第一和第二单元（110,120）。 第一单元（110）将多声道音频信号（101）编码成空间缩混（102）和参数（104）。 这些参数（104）使得多声道解码器（20）能够从空间缩混（102）重建多声道音频信号（203）。 第二单元（120）从空间缩混（102）生成参数（105），使参数（105）能够使解码器从替代的下混合（103）重构空间缩混（202）。 所谓的艺术混合，已经在一个健全的工作室手工混合。 以这种方式，解码器（20）可以有效地处理接收替代的下混合（103）而不是常规的空间，混合（102）的情况。 在解码器（20）中，首先，从替代的下混合（103）和参数（105）重构空间缩混（202）。 接下来，空间缩混（202）被解码为多声道音频信号（203）。
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公开(公告)号：US20080255856A1
公开(公告)日：2008-10-16
申请号：US11995538
申请日：2006-07-07
申请人： Erik Gosuinus Petrus Schuijers , Gerard Herman Hotho , Heiko Purnhagen , Wolfgang Schildbach , Holger Horich , Hans Magnus Kristofer Kjorling , Karl Jonas Roden
发明人： Erik Gosuinus Petrus Schuijers , Gerard Herman Hotho , Heiko Purnhagen , Wolfgang Schildbach , Holger Horich , Hans Magnus Kristofer Kjorling , Karl Jonas Roden
IPC分类号： G10L21/00
CPC分类号： G10L19/008 , H04S2420/03
摘要： An audio encoder (109) has a hierarchical encoding structure and generates a data stream comprising one or more audio channels as well as parametric audio encoding data. The encoder (109) comprises an encoding structure processor (305) which inserts decoder tree structure data into the data stream. The decoder tree structure data comprises at least one data value indicative of a channel split characteristic for an audio channel at a hierarchical layer of the hierarchical decoder structure and may specifically specify the decoder tree structures to be applied by a decoder A decoder (115) comprises a receiver (401) which receives the data stream and a decoder structure processor (405) for generating the hierarchical decoder structure in response to the decoder tree structure data. A decode processor (403) then generates output audio channels from the data stream using the hierarchical decoder structure.
摘要翻译： 音频编码器（109）具有分层编码结构，并且生成包括一个或多个音频信道以及参数音频编码数据的数据流。 编码器（109）包括将解码器树结构数据插入到数据流中的编码结构处理器（305）。 解码器树结构数据包括指示分层解码器结构的分级层处的音频信道的信道分离特性的至少一个数据值，并且可以具体指定要由解码器A应用的解码器树结构。解码器（115）包括 接收数据流的接收机（401）和用于响应于解码器树结构数据生成分层解码器结构的解码器结构处理器（405）。 解码处理器（403）然后使用分层解码器结构从数据流生成输出音频通道。
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17.发明授权Efficient and scalable parametric stereo coding for low bitrate audio coding applications 有权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：US08014534B2
公开(公告)日：2011-09-06
申请号：US11237174
申请日：2005-09-27
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。
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18.发明授权公开(公告)号：US07966191B2
公开(公告)日：2011-06-21
申请号：US11995538
申请日：2006-07-07
申请人： Erik Gosuinus Petrus Schuijers , Gerard Herman Hotho , Heiko Purnhagen , Wolfgang Alexander Schildbach , Holger Horich , Hans Magnus Kristofer Kjorling , Karl Jonas Roden
发明人： Erik Gosuinus Petrus Schuijers , Gerard Herman Hotho , Heiko Purnhagen , Wolfgang Alexander Schildbach , Holger Horich , Hans Magnus Kristofer Kjorling , Karl Jonas Roden
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , H04S2420/03
摘要： An audio encoder (109) has a hierarchical encoding structure and generates a data stream comprising one or more audio channels as well as parametric audio encoding data. The encoder (109) comprises an encoding structure processor (305) which inserts decoder tree structure data into the data stream. The decoder tree structure data comprises at least one data value indicative of a channel split characteristic for an audio channel at a hierarchical layer of the hierarchical decoder structure and may specifically specify the decoder tree structures to be applied by a decoder. A decoder (115) comprises a receiver (401) which receives the data stream and a decoder structure processor (405) for generating the hierarchical decoder structure in response to the decoder tree structure data. A decode processor (403) then generates output audio channels from the data stream using the hierarchical decoder structure.
摘要翻译： 音频编码器（109）具有分层编码结构，并且生成包括一个或多个音频信道以及参数音频编码数据的数据流。 编码器（109）包括将解码器树结构数据插入到数据流中的编码结构处理器（305）。 解码器树结构数据包括指示分层解码器结构的分级层处的音频信道的信道分离特性的至少一个数据值，并且可以具体指定要由解码器应用的解码器树结构。 解码器（115）包括接收数据流的接收机（401）和用于响应于解码器树结构数据产生分层解码器结构的解码器结构处理器（405）。 解码处理器（403）然后使用分层解码器结构从数据流生成输出音频通道。
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19.发明申请Efficient and Scalable Parametric Stereo Coding for Low Bitrate Audio Coding Applications 有权用于低比特率音频编码应用的高效和可扩展的参数立体声编码公开(公告)号：US20090316914A1
公开(公告)日：2009-12-24
申请号：US12496926
申请日：2009-07-02
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。
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20.发明申请公开(公告)号：US20060023891A1
公开(公告)日：2006-02-02
申请号：US11238982
申请日：2005-09-28
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.
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