公开(公告)号：US09218818B2

公开(公告)日：2015-12-22

申请号：US13458492

申请日：2012-04-27

Applicant: Fredrik Henn ,  Kristofer Kjorling ,  Lars Liljeryd ,  Jonas Roden ,  Jonas Engdegard

Inventor： Fredrik Henn ,  Kristofer Kjorling ,  Lars Liljeryd ,  Jonas Roden ,  Jonas Engdegard

IPC: H04R5/00 ,  G10L19/00 ,  G10L19/24 ,  G10L19/008 ,  H04S1/00 ,  H04S3/00 ,  G10L19/02

CPC classification number: G10L19/24 ,  G10L19/008 ,  G10L19/0204 ,  H04S1/007 ,  H04S3/002

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20120213377A1

公开(公告)日：2012-08-23

申请号：US13458492

申请日：2012-04-27

Applicant: Fredrik HENN ,  Kristofer Kjorling ,  Lars Liljeryd ,  Jonas Roden ,  Jonas Engdegard

Inventor： Fredrik HENN ,  Kristofer Kjorling ,  Lars Liljeryd ,  Jonas Roden ,  Jonas Engdegard

IPC: H04R5/00

CPC classification number: G10L19/24 ,  G10L19/008 ,  G10L19/0204 ,  H04S1/007 ,  H04S3/002

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08073144B2

公开(公告)日：2011-12-06

申请号：US11237133

申请日：2005-09-27

Applicant: Fredrik Henn ,  Kristofer Kjorling ,  Lars Liljeryd ,  Jonas Roden ,  Jonas Engdegard

Inventor： Fredrik Henn ,  Kristofer Kjorling ,  Lars Liljeryd ,  Jonas Roden ,  Jonas Engdegard

IPC: H04R5/00

CPC classification number: G10L19/24 ,  G10L19/008 ,  G10L19/0204 ,  H04S1/007 ,  H04S3/002

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07382886B2

公开(公告)日：2008-06-03

申请号：US10483453

申请日：2002-07-10

Applicant: Fredrik Henn ,  Kristofer Kjorling ,  Lars Liljeryd ,  Jonas Roden ,  Jonas Engdegard

Inventor： Fredrik Henn ,  Kristofer Kjorling ,  Lars Liljeryd ,  Jonas Roden ,  Jonas Engdegard

IPC: H04R5/00 ,  H04R5/02 ,  G10L19/00 ,  G10L21/00 ,  H04B1/20

CPC classification number: G10L19/24 ,  G10L19/008 ,  G10L19/0204 ,  H04S1/007 ,  H04S3/002

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20070016416A1

公开(公告)日：2007-01-18

申请号：US11406631

申请日：2006-04-19

Applicant: Jonas Roden ,  Jonas Engdegard ,  Heiko Purnhagen ,  Jeroen Breebaart ,  Erik Schuijers ,  Steven van de Par ,  Johannes Hilpert ,  Jurgen Herre

Inventor： Jonas Roden ,  Jonas Engdegard ,  Heiko Purnhagen ,  Jeroen Breebaart ,  Erik Schuijers ,  Steven van de Par ,  Johannes Hilpert ,  Jurgen Herre

IPC: G10L19/00

CPC classification number: G10L19/03 ,  G10L19/008

Abstract: Parameters being a measure for a characteristic of a channel or of a pair of channels, wherein the parameter is a measure for a characteristic of the channel or of the pair of channels with respect to another channel of a multi-channel signal can be quantized more efficiently using a quantization rule that is generated based on a relation of an energy measure of the channel or the pair of channels and an energy measure of the multi-channel signal. With generation of the quantization rule taking into account a psycho acoustic approach, the size of an encoded representation of the multi-channel signal can be decreased by coarser quantization without significantly disturbing the perceptual quality of the multi-channel signal when reconstructed from the encoded representation.

Abstract translation: 参数是用于信道或一对信道特性的度量，其中参数是相对于多信道信号的另一信道的信道或信道对的特性的度量可以被更多地量化 有效地使用基于信道的能量测量或信道对的关系产生的量化规则和多信道信号的能量测量。 考虑到心理声学方法的生成量化规则，可以通过较粗略的量化来减少多信道信号的编码表示的大小，而不会在从编码表示重建时显着干扰多信道信号的感知质量 。

公开(公告)号：US20060023888A1

公开(公告)日：2006-02-02

申请号：US11237133

申请日：2005-09-27

Applicant: Fredrik Henn ,  Kristofer Kjorling ,  Lars Liljeryd ,  Jonas Roden ,  Jonas Engdegard

Inventor： Fredrik Henn ,  Kristofer Kjorling ,  Lars Liljeryd ,  Jonas Roden ,  Jonas Engdegard

IPC: H04R5/00 ,  H04H5/00

CPC classification number: G10L19/24 ,  G10L19/008 ,  G10L19/0204 ,  H04S1/007 ,  H04S3/002

Abstract: 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.

公开(公告)号：US20050053242A1

公开(公告)日：2005-03-10

申请号：US10483453

申请日：2002-07-10

Applicant: Fredrik Henn ,  Kristofer Kjorling ,  Lars Liljeryd ,  Jonas Roden ,  Jonas Engdegard

Inventor： Fredrik Henn ,  Kristofer Kjorling ,  Lars Liljeryd ,  Jonas Roden ,  Jonas Engdegard

IPC: G10L19/008 ,  G10L19/02 ,  G10L19/14 ,  G10L19/24 ,  H04S20060101 ,  H04S1/00 ,  H04S3/00 ,  H04S5/00 ,  H04R5/00

CPC classification number: G10L19/24 ,  G10L19/008 ,  G10L19/0204 ,  H04S1/007 ,  H04S3/002

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08605911B2

公开(公告)日：2013-12-10

申请号：US12610186

申请日：2009-10-30

Applicant: Fredrik Henn ,  Kristofer Kjorling ,  Lars Liljeryd ,  Jonas Roden ,  Jonas Engdegard

Inventor： Fredrik Henn ,  Kristofer Kjorling ,  Lars Liljeryd ,  Jonas Roden ,  Jonas Engdegard

IPC: H04R5/00 ,  G06F17/00

CPC classification number: G10L19/008 ,  G10L19/265 ,  G10L21/038 ,  G10L25/21

Abstract: 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.

公开(公告)号：US08243936B2

公开(公告)日：2012-08-14

申请号：US12610193

申请日：2009-10-30

Applicant: Fredrik Henn ,  Kristofer Kjorling ,  Lars Liljeryd ,  Jonas Roden ,  Jonas Engdegard

Inventor： Fredrik Henn ,  Kristofer Kjorling ,  Lars Liljeryd ,  Jonas Roden ,  Jonas Engdegard

IPC: H04R5/00 ,  G10L19/00

CPC classification number: G10L19/24 ,  G10L19/008 ,  G10L19/0204 ,  H04S1/007 ,  H04S3/002

Abstract: 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.

公开(公告)号：US20080091436A1

公开(公告)日：2008-04-17

申请号：US11571838

申请日：2005-07-11

Applicant: Dirk Jeroen Breebaart ,  Erik Gosuinus Petrus Schuijers ,  Heiko Purnhagen ,  Karl Jonas Roden

Inventor： Dirk Jeroen Breebaart ,  Erik Gosuinus Petrus Schuijers ,  Heiko Purnhagen ,  Karl Jonas Roden

IPC: G10L21/00

CPC classification number: H04S5/005 ,  G10L19/008

Abstract: A device (1) for converting a first number (M) of input audio channels into a second, larger number (N) of output audio channels comprises: decorrelation units (3) for decomposing the input audio channels into a set of decorrelated auxiliary channels, at least one upmix unit (4) for combining the decorrelated auxiliary channels into the output audio channels, and at least one pre-processing unit (2) for pre-processing the input audio channels and feeding the pre-processed input audio channels to the decorrelation units (3). The pre-processing unit (2) and the upmix unit (4) are preferably controlled by audio parameters.

Abstract translation: 用于将输入音频通道的第一数量（M）转换为第二，更大数量（N）的输出音频通道的设备（1）包括：用于将输入音频通道分解为一组去相关的辅助通道的解相关单元（3） 至少一个用于将解相关辅助通道组合成输出音频通道的上混单元（4），以及至少一个预处理单元（2），用于预处理输入音频通道并将预处理的输入音频通道馈送到 去相关单位（3）。 预处理单元（2）和上混单元（4）优选地由音频参数控制。