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公开(公告)号：US20120284034A1
公开(公告)日：2012-11-08
申请号：US13552598
申请日：2012-07-18
申请人： Kristofer KJORLING , Lars Villemoes
发明人： Kristofer KJORLING , Lars Villemoes
IPC分类号： G10L19/00
CPC分类号： G10L19/0204 , G10L19/00 , G10L19/025 , G10L19/083 , G10L19/12 , G10L19/26 , G10L25/12 , G10L25/18 , G10L25/21 , G10L25/48 , H03H17/0266
摘要： The present invention proposes a new method for improving the performance of a real-valued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels dependent on the sign of the channels, as defined in the application, reduced aliasing is achieved. Furthermore, the grouping of the channels during gain-calculation, gives an improved energy estimate of the real valued subband signals in the filterbank.
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公开(公告)号：US07548864B2
公开(公告)日：2009-06-16
申请号：US11862143
申请日：2007-09-26
申请人： Kristofer Kjorling , Lars Villemoes
发明人： Kristofer Kjorling , Lars Villemoes
CPC分类号： G10L19/0204 , G10L19/00 , G10L19/025 , G10L19/083 , G10L19/12 , G10L19/26 , G10L25/12 , G10L25/18 , G10L25/21 , G10L25/48 , H03H17/0266
摘要： The present invention proposes a new method for improving the performance of a real-valued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels dependent on the sign of the channels, as defined in the application, reduced aliasing is achieved. Furthermore, the grouping of the channels during gain-calculation, gives an improved energy estimate of the real valued subband signals in the filterbank.
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公开(公告)号：US20060239473A1
公开(公告)日：2006-10-26
申请号：US11402519
申请日：2006-04-12
申请人： Kristofer Kjorling , Jurgen Herre , Sascha Disch , Lars Villemoes
发明人： Kristofer Kjorling , Jurgen Herre , Sascha Disch , Lars Villemoes
IPC分类号： H03G5/00
CPC分类号： H04S7/307 , G10L19/008 , G10L19/02 , G10L19/26 , H04S3/00 , H04S5/005 , H04S2420/03
摘要： The envelope of a decorrelated signal derived from an original signal can be shaped without introducing additional distortion, when a spectral flattener is used to spectrally flatten the spectrum of the decorrelated signal and the original signal prior to using the flattened spectra for deriving a gain factor describing the energy distribution between the flattened spectra, and when the so derived gain factor is used by an envelope shaper to timely shape the envelope of the decorrelated signal.
摘要翻译： 当原始信号得到的去相关信号的包络线可以被成形，而不引入额外的失真，当使用光谱平滑器在光谱平坦化去相关信号的频谱和原始信号之前，在使用平坦的光谱以得出描述的增益因子之前 平坦化光谱之间的能量分布，以及当衍生的增益因子被信封整形器用于及时地形成去相关信号的包络时。
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4.发明申请METHOD FOR REDUCTION OF ALIASING INTRODUCED BY SPECTRAL ENVELOPE ADJUSTMENT IN REAL-VALUED FILTERBANKS 有权用于减少真实值滤波器中光谱环境调整引起的干扰的方法公开(公告)号：US20120284033A1
公开(公告)日：2012-11-08
申请号：US13552590
申请日：2012-07-18
申请人： Kristofer KJORLING , Lars Villemoes
发明人： Kristofer KJORLING , Lars Villemoes
IPC分类号： G10L19/00
CPC分类号： G10L19/0204 , G10L19/00 , G10L19/025 , G10L19/083 , G10L19/12 , G10L19/26 , G10L25/12 , G10L25/18 , G10L25/21 , G10L25/48 , H03H17/0266
摘要： The present invention proposes a new method for improving the performance of a real-valued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels dependent on the sign of the channels, as defined in the application, reduced aliasing is achieved. Furthermore, the grouping of the channels during gain-calculation, gives an improved energy estimate of the real valued subband signals in the filterbank.
摘要翻译： 本发明提出了一种用于提高基于实数滤波器组的频谱包络调节器的性能的新方法。 通过自适应地锁定取决于通道的符号的相邻通道的增益值，如应用中定义的那样，实现了减少的混叠。 此外，增益计算期间信道的分组给出了滤波器组中实值子带信号的改进的能量估计。
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5.发明授权Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks 有权减少由实数滤波器组中的频谱包络调整引入的混叠的方法公开(公告)号：US07590543B2
公开(公告)日：2009-09-15
申请号：US11859521
申请日：2007-09-21
申请人： Kristofer Kjorling , Lars Villemoes
发明人： Kristofer Kjorling , Lars Villemoes
CPC分类号： G10L19/0204 , G10L19/00 , G10L19/025 , G10L19/083 , G10L19/12 , G10L19/26 , G10L25/12 , G10L25/18 , G10L25/21 , G10L25/48 , H03H17/0266
摘要： The present invention proposes a new method for improving the performance of a real-valued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels dependent on the sign of the channels, as defined in the application, reduced aliasing is achieved. Furthermore, the grouping of the channels during gain-calculation, gives an improved energy estimate of the real valued subband signals in the filterbank.
摘要翻译： 本发明提出了一种用于提高基于实数滤波器组的频谱包络调节器的性能的新方法。 通过自适应地锁定取决于通道的符号的相邻通道的增益值，如应用中定义的那样，实现了减少的混叠。 此外，增益计算期间信道的分组给出了滤波器组中实值子带信号的改进的能量估计。
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公开(公告)号：US08498876B2
公开(公告)日：2013-07-30
申请号：US13552598
申请日：2012-07-18
申请人： Kristofer Kjorling , Lars Villemoes
发明人： Kristofer Kjorling , Lars Villemoes
IPC分类号： G10L19/00
CPC分类号： G10L19/0204 , G10L19/00 , G10L19/025 , G10L19/083 , G10L19/12 , G10L19/26 , G10L25/12 , G10L25/18 , G10L25/21 , G10L25/48 , H03H17/0266
摘要： The present invention proposes a new method for improving the performance of a real-valued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels dependent on the sign of the channels, as defined in the application, reduced aliasing is achieved. Furthermore, the grouping of the channels during gain-calculation, gives an improved energy estimate of the real valued subband signals in the filterbank.
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公开(公告)号：US08606587B2
公开(公告)日：2013-12-10
申请号：US13552590
申请日：2012-07-18
申请人： Kristofer Kjorling , Lars Villemoes
发明人： Kristofer Kjorling , Lars Villemoes
IPC分类号： G10L19/00
CPC分类号： G10L19/0204 , G10L19/00 , G10L19/025 , G10L19/083 , G10L19/12 , G10L19/26 , G10L25/12 , G10L25/18 , G10L25/21 , G10L25/48 , H03H17/0266
摘要： The present invention proposes a new method for improving the performance of a real-valued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels dependent on the sign of the channels, as defined in the application, reduced aliasing is achieved. Furthermore, the grouping of the channels during gain-calculation, gives an improved energy estimate of the real valued subband signals in the filterbank.
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公开(公告)号：US20060233380A1
公开(公告)日：2006-10-19
申请号：US11314711
申请日：2005-12-21
申请人： Andreas Holzer , Jurgen Herre , Heiko Purnhagen , Kristofer Kjorling , Jonas Roden , Lars Villemoes , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers , Werner Oomen
发明人： Andreas Holzer , Jurgen Herre , Heiko Purnhagen , Kristofer Kjorling , Jonas Roden , Lars Villemoes , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers , Werner Oomen
IPC分类号： H04R5/00
CPC分类号： G10L19/008 , H04S3/00 , H04S2420/03
摘要： A parametric representation of a multi-channel audio signal describes the spatial properties of the audio signal well with compact side information when a coherence information, describing the coherence between a first and a second channel, is derived within a hierarchical encoding process only for channel pairs including a first channel having only information of a left side with respect to a listening position and including a second channel having only information from a right side with respect to a listening position. As within the hierarchical process the multiple audio channels of the audio signal are downmixed iteratively into monophonic channels, one can pick the relevant parameters from an encoding step involving only channel pairs carrying the information needed to describe the spatial properties of the multi-channel audio signal.
摘要翻译： 多通道音频信号的参数化表示利用紧凑的侧信息来描述音频信号的空间属性，当描述第一和第二信道之间的相干性的相干信息仅在信道对的分级编码处理中导出时 包括仅具有相对于收听位置的左侧的信息的第一频道，并且包括仅具有相对于收听位置的右侧的信息的第二频道。 如在分层处理中，音频信号的多个音频通道被迭代地下混合成单声道，可以从仅涉及携带描述多声道音频信号的空间属性所需的信息的信道对的编码步骤中选择相关参数 。
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9.发明申请Apparatus and method applying adaptive spectral whitening in a high-frequency reconstruction coding system 有权在高频重建编码系统中应用自适应频谱白化的装置和方法公开(公告)号：US20060036432A1
公开(公告)日：2006-02-16
申请号：US11247176
申请日：2005-10-12
申请人： Kristofer Kjorling , Per Ekstrand , Fredrik Henn , Lars Villemoes
发明人： Kristofer Kjorling , Per Ekstrand , Fredrik Henn , Lars Villemoes
IPC分类号： G10L11/04
CPC分类号： G10L21/038
摘要： The present invention proposes a new method and a new apparatus for enhancement of audio source coding systems utilising high frequency reconstruction (HFR). It utilises adaptive filtering to reduce artifacts due to different tonal characteristics in different frequency ranges of an audio signal upon which HFR is performed. The present invention is applicable to both speech coding and natural audio coding systems.
摘要翻译： 本发明提出了一种利用高频重构（HFR）来增强音频源编码系统的新方法和新装置。 它利用自适应滤波来减少因执行HFR的音频信号的不同频率范围内的不同音调特性引起的伪影。 本发明适用于语音编码和自然音频编码系统。
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10.发明申请Method for Reduction of Aliasing Introduced by Spectral Envelope Adjustment in Real-Valued Filterbanks 有权减少实数滤波器中频谱信号调整引入的混叠的方法公开(公告)号：US20090234646A1
公开(公告)日：2009-09-17
申请号：US12473075
申请日：2009-05-27
申请人： Kristofer Kjorling , Lars Villemoes
发明人： Kristofer Kjorling , Lars Villemoes
CPC分类号： G10L19/0204 , G10L19/00 , G10L19/025 , G10L19/083 , G10L19/12 , G10L19/26 , G10L25/12 , G10L25/18 , G10L25/21 , G10L25/48 , H03H17/0266
摘要： The present invention proposes a new method for improving the performance of a real-valued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels dependent on the sign of the channels, as defined in the application, reduced aliasing is achieved. Furthermore, the grouping of the channels during gain-calculation, gives an improved energy estimate of the real valued subband signals in the filterbank.
摘要翻译： 本发明提出了一种用于提高基于实数滤波器组的频谱包络调节器的性能的新方法。 通过自适应地锁定取决于通道的符号的相邻通道的增益值，如应用中定义的那样，实现了减少的混叠。 此外，增益计算期间信道的分组给出了滤波器组中实值子带信号的改进的能量估计。
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