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1. 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.

2. 发明授权

US08605911B2 Efficient and scalable parametric stereo coding for low bitrate audio coding applications 有权
公开(公告)号：US08605911B2
公开(公告)日：2013-12-10
申请号：US12610186
申请日：2009-10-30
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 , G06F17/00
CPC分类号： G10L19/008 , G10L19/265 , G10L21/038 , G10L25/21
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.

3. 发明授权

US08243936B2 Efficient and scalable parametric stereo coding for low bitrate audio coding applications 有权
公开(公告)号：US08243936B2
公开(公告)日：2012-08-14
申请号：US12610193
申请日：2009-10-30
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 , G10L19/00
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.

4. 发明申请

US20060029231A1 Efficient and scalable parametric stereo coding for low bitrate audio coding applications 有权
公开(公告)号：US20060029231A1
公开(公告)日：2006-02-09
申请号：US11237174
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.

5. 发明申请

US20060023895A1 Efficient and scalable parametric stereo coding for low bitrate audio coding applications 有权
公开(公告)号：US20060023895A1
公开(公告)日：2006-02-02
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： H04R5/00 , H04B3/20
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.

6. 发明授权

US08116460B2 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：US08116460B2
公开(公告)日：2012-02-14
申请号：US11238982
申请日：2005-09-28
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 , G10L19/00
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。

7. 发明授权

US08081763B2 Efficient and scalable parametric stereo coding for low bitrate audio coding applications 有权
公开(公告)号：US08081763B2
公开(公告)日：2011-12-20
申请号：US12496926
申请日：2009-07-02
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： H04R25/00 , G10L21/04
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.

8. 发明授权

US08014534B2 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：US08014534B2
公开(公告)日：2011-09-06
申请号：US11237174
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 , H03G7/00
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。

9. 发明申请

US20090316914A1 Efficient and Scalable Parametric Stereo Coding for Low Bitrate Audio Coding Applications 有权
标题翻译：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
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 , G10L19/00
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。

10. 发明申请

US20060023891A1 Efficient and scalable parametric stereo coding for low bitrate audio coding applications 有权
公开(公告)号：US20060023891A1
公开(公告)日：2006-02-02
申请号：US11238982
申请日：2005-09-28
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.

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