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161. 发明授权

EP2800093B1 Efficient combined harmonic transposition 有权转让
标题翻译：高效的组合谐波换位
公开(公告)号：EP2800093B1
公开(公告)日：2017-12-27
申请号：EP14173150.5
申请日：2010-05-25
申请人： Dolby International AB
发明人： Ekstrand, Per , Villemoes, Lars , Hedelin, Per
IPC分类号： G10L21/038 , G10L21/0388
CPC分类号： G10H1/0091 , G10H1/125 , G10H2210/311 , G10L19/265 , G10L21/038 , G10L21/0388
摘要： The present document relates to audio coding systems which make use of a harmonic transposition method for high frequency reconstruction (HFR), and to digital effect processors, e.g. so-called exciters, where generation of harmonic distortion adds brightness to the processed signal. In particular, a system configured to generate a high frequency component of a signal from a low frequency component of the signal is described. The system may comprise an analysis filter bank (501) configured to provide a set of analysis subband signals from the low frequency component of the signal; wherein the set of analysis subband signals comprises at least two analysis subband signals; wherein the analysis filter bank (501) has a frequency resolution of ” f . The system further comprises a nonlinear processing unit (502) configured to determine a set of synthesis subband signals from the set of analysis subband signals using a transposition order P ; wherein the set of synthesis subband signals comprises a portion of the set of analysis subband signals phase shifted by an amount derived from the transposition order P ; and a synthesis filter bank (504) configured to generate the high frequency component of the signal from the set of synthesis subband signals; wherein the synthesis filter bank (504) has a frequency resolution of F ” f ; with F being a resolution factor, with F ‰¥ 1; wherein the transposition order P is different from the resolution factor F .

162. 发明公开

EP3249649A1 AUDIO PROCESSING APPARATUS AND AUDIO PROCESSING METHOD 有权
标题翻译：音频处理装置和音频处理方法
公开(公告)号：EP3249649A1
公开(公告)日：2017-11-29
申请号：EP17172658.1
申请日：2017-05-24
申请人： Alpine Electronics, Inc.
发明人： Tachi, Ryosuke
IPC分类号： G10L21/0388 , H03H17/02
CPC分类号： G10L21/038 , G10L21/0388 , H03H17/028 , H03H17/0621
摘要： An upper limit of a frequency range of audio indicated by input audio data is detected. A representative point extraction unit (31) downsamples the input audio data to a sampling rate set to be less than or equal to twice the detected upper limit to obtain representative-point audio data. An interpolation processing unit (33) upsamples the representative-point audio data by using a fractal interpolation function (FIF) that uses a mapping function calculated by a mapping function calculation unit (32), while using the input audio data, if necessary, to generate high-frequency interpolated audio data.
摘要翻译：检测由输入音频数据指示的音频的频率范围的上限。代表性点提取单元（31）将输入音频数据下采样到被设置为小于或等于检测到的上限的两倍的采样率以获得代表点音频数据。内插处理单元（33）通过使用使用由映射函数计算单元（32）计算的映射函数的分形内插函数（FIF）对代表点音频数据进行上采样，同时如果需要，使用输入音频数据生成高频插值音频数据。

163. 发明公开

EP3196878A1 DECODER FOR GENERATING A FREQUENCY ENHANCED AUDIO SIGNAL, METHOD OF DECODING, ENCODER FOR GENERATING AN ENCODED SIGNAL AND METHOD OF ENCODING USING COMPACT SELECTION SIDE INFORMATION 有权转让
标题翻译：用于生成频率增强音频信号的解码器，解码方法，编码器以生成编码信号以及使用紧凑选择侧信息进行编码的方法
公开(公告)号：EP3196878A1
公开(公告)日：2017-07-26
申请号：EP17158862.7
申请日：2014-01-28
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Nagel, Frederik , Disch, Sascha , Niedermeier, Andreas
IPC分类号： G10L21/0388 , G10L19/002 , G10L19/26
CPC分类号： G10L19/265 , G10L19/002 , G10L21/0388
摘要： A decoder for generating a frequency enhanced audio signal (120), comprises: a feature extractor (104) for extracting a feature from a core signal (100); a side information extractor (110) for extracting a selection side information associated with the core signal; a parameter generator (108) for generating a parametric representation for estimating a spectral range of the frequency enhanced audio signal (120) not defined by the core signal (100), wherein the parameter generator (108) is configured to provide a number of parametric representation alternatives (702, 704, 706, 708) in response to the feature (112), and wherein the parameter generator (108) is configured to select one of the parametric representation alternatives as the parametric representation in response to the selection side information (712 to 718); and a signal estimator (118) for estimating the frequency enhanced audio signal (120) using the parametric representation selected.
摘要翻译：一种用于生成频率增强音频信号（120）的解码器，包括：特征提取器（104），用于从核心信号（100）提取特征; 边信息提取器（110），用于提取与核心信号相关联的选择侧信息; 参数生成器（108），用于生成用于估计未被所述核心信号（100）定义的所述频率增强音频信号（120）的频谱范围的参数表示，其中所述参数生成器（108）被配置为提供多个参数响应于所述特征（112）的表示替换（702,704,706,708），并且其中所述参数生成器（108）被配置为响应于所述选择侧信息而选择所述参数表示替换中的一个作为所述参数表示 712至718）; 以及信号估计器（118），用于使用所选参数表示来估计频率增强音频信号（120）。

164. 发明公开

EP3029672A3 METHODS AND SYSTEMS FOR EFFICIENT RECOVERY OF HIGH FREQUENCY AUDIO CONTENT 有权转让
标题翻译：维多利亚公园系统
公开(公告)号：EP3029672A3
公开(公告)日：2016-06-29
申请号：EP15196734.6
申请日：2013-02-22
申请人： Dolby International AB
发明人： THESING, Robin , SCHUG, Michael
IPC分类号： G10L21/0388 , G10L19/02
CPC分类号： G10L19/008 , G10L19/0204 , G10L19/028 , G10L19/167 , G10L21/0388
摘要： The present document relates to the technical field of audio coding, decoding and processing. It specifically relates to methods of recovering high frequency content of an audio signal from low frequency content of the same audio signal in an efficient manner. A method for determining a first banded tonality value (311, 312) for a first frequency subband (205) of an audio signal is described. The first banded tonality value (311, 312) is used for approximating a high frequency component of the audio signal based on a low frequency component of the audio signal. The method comprises determining a set of transform coefficients in a corresponding set of frequency bins based on a block of samples of the audio signal; determining a set of bin tonality values (341) for the set of frequency bins using the set of transform coefficients, respectively; and combining a first subset of two or more of the set of bin tonality values (341) for two or more corresponding adjacent frequency bins of the set of frequency bins lying within the first frequency subband, thereby yielding the first banded tonality value (311, 312) for the first frequency subband.
摘要翻译：本文件涉及音频编码，解码和处理技术领域。具体涉及以高效的方式从相同音频信号的低频内容中恢复音频信号的高频内容的方法。描述了用于确定音频信号的第一频率子带（205）的第一带状音调值（311,312）的方法。第一带状音调值（311,312）用于基于音频信号的低频分量近似音频信号的高频分量。该方法包括基于音频信号的采样块来确定频率组的相应集合中的一组变换系数; 使用所述变换系数集合分别确定所述频率组集合的一组bin音调值（341）; 以及将位于所述第一频率子带内的所述频率组集合中的两个或多个对应的相邻频率块的所述一组音调值（341）中的两个或更多个的第一子集组合，从而产生所述第一带状音调值（311， 312）用于第一频率子带。

165. 发明公开

EP3029672A2 METHODS AND SYSTEMS FOR EFFICIENT RECOVERY OF HIGH FREQUENCY AUDIO CONTENT 有权转让
标题翻译： VERFAHREN UND PROGRAMM ZUR EFFIZIENTEN WIEDERHERSTELLUNG VON HOCHFREQUENZ-AUDIOINHALTEN
公开(公告)号：EP3029672A2
公开(公告)日：2016-06-08
申请号：EP15196734.6
申请日：2013-02-22
申请人： Dolby International AB
发明人： THESING, Robin , SCHUG, Michael
IPC分类号： G10L21/0388 , G10L19/02
CPC分类号： G10L19/008 , G10L19/0204 , G10L19/028 , G10L19/167 , G10L21/0388
摘要： The present document relates to the technical field of audio coding, decoding and processing. It specifically relates to methods of recovering high frequency content of an audio signal from low frequency content of the same audio signal in an efficient manner. A method for determining a first banded tonality value (311, 312) for a first frequency subband (205) of an audio signal is described. The first banded tonality value (311, 312) is used for approximating a high frequency component of the audio signal based on a low frequency component of the audio signal. The method comprises determining a set of transform coefficients in a corresponding set of frequency bins based on a block of samples of the audio signal; determining a set of bin tonality values (341) for the set of frequency bins using the set of transform coefficients, respectively; and combining a first subset of two or more of the set of bin tonality values (341) for two or more corresponding adjacent frequency bins of the set of frequency bins lying within the first frequency subband, thereby yielding the first banded tonality value (311, 312) for the first frequency subband.
摘要翻译：本文件涉及音频编码，解码和处理技术领域。具体涉及以高效的方式从相同音频信号的低频内容中恢复音频信号的高频内容的方法。描述了用于确定音频信号的第一频率子带（205）的第一带状音调值（311,312）的方法。第一带状音调值（311,312）用于基于音频信号的低频分量近似音频信号的高频分量。该方法包括基于音频信号的采样块来确定频率组的相应集合中的一组变换系数; 使用所述变换系数集合分别确定所述频率组集合的一组bin音调值（341）; 以及将位于所述第一频率子带内的所述频率组集合中的两个或多个对应的相邻频率块的所述一组音调值（341）中的两个或更多个的第一子集组合，从而产生所述第一带状音调值（311， 312）用于第一频率子带。

166. 发明授权

EP2673771B1 EFFICIENT ENCODING/DECODING OF AUDIO SIGNALS 有权
标题翻译：高效的编码/解码音频信号
公开(公告)号：EP2673771B1
公开(公告)日：2016-06-01
申请号：EP11858302.0
申请日：2011-02-09
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： GRANCHAROV, Volodya , NORVELL, Erik , SVERRISSON, Sigurdur
IPC分类号： G10L19/02 , G10L21/0388 , G10L19/24
CPC分类号： G10L19/12 , G10L19/0204 , G10L19/0212 , G10L19/24 , G10L21/0388 , G10L2019/0008

167. 发明授权

EP2817803B1 METHODS AND SYSTEMS FOR EFFICIENT RECOVERY OF HIGH FREQUENCY AUDIO CONTENT 有权转让
标题翻译： VERFAHREN VORRICHTUNGEN ZUR EFFIZIENTEN REGENERATION VON HOCHFREQUENZAUDIOINHALT
公开(公告)号：EP2817803B1
公开(公告)日：2016-02-03
申请号：EP13705503.4
申请日：2013-02-22
申请人： Dolby International AB
发明人： THESING, Robin , SCHUG, Michael
IPC分类号： G10L19/02 , G10L21/0388
CPC分类号： G10L19/008 , G10L19/0204 , G10L19/028 , G10L19/167 , G10L21/0388
摘要： The present document relates to the technical field of audio coding, decoding and processing. It specifically relates to methods of recovering high frequency content of an audio signal from low frequency content of the same audio signal in an efficient manner. A method for determining a first banded tonality value (311, 312) for a first frequency subband (205) of an audio signal is described. The first banded tonality value (311, 312) is used for approximating a high frequency component of the audio signal based on a low frequency component of the audio signal. The method comprises determining a set of transform coefficients in a corresponding set of frequency bins based on a block of samples of the audio signal; determining a set of bin tonality values (341) for the set of frequency bins using the set of transform coefficients, respectively; and combining a first subset of two or more of the set of bin tonality values (341) for two or more corresponding adjacent frequency bins of the set of frequency bins lying within the first frequency subband, thereby yielding the first banded tonality value (311, 312) for the first frequency subband.
摘要翻译：本文件涉及音频编码，解码和处理技术领域。具体涉及以高效的方式从相同音频信号的低频内容中恢复音频信号的高频内容的方法。描述了用于确定音频信号的第一频率子带（205）的第一带状音调值（311,312）的方法。第一带状音调值（311,312）用于基于音频信号的低频分量近似音频信号的高频分量。该方法包括基于音频信号的采样块来确定频率组的相应集合中的一组变换系数; 使用所述变换系数集合分别确定所述频率组集合的一组bin音调值（341）; 以及将位于所述第一频率子带内的所述频率组集合中的两个或多个对应的相邻频率块的所述一组音调值（341）中的两个或更多个的第一子集组合，从而产生所述第一带状音调值（311， 312）用于第一频率子带。

168. 发明授权

EP2102861B1 SYSTEMS AND METHODS FOR DYNAMIC NORMALIZATION TO REDUCE LOSS IN PRECISION FOR LOW-LEVEL SIGNALS 有权转让
标题翻译：系统和动态正常化在小信号的精度降低的减肥方法
公开(公告)号：EP2102861B1
公开(公告)日：2016-01-06
申请号：EP07864987.8
申请日：2007-11-30
申请人： QUALCOMM Incorporated
发明人： KANDHADAI, Ananthapadmanabhan A. , RAJENDRAN, Vivek
IPC分类号： G10L19/02 , G10L21/0388
CPC分类号： G10L19/0204 , G10L21/00 , G10L21/0388

169. 发明公开

EP2673771A4 EFFICIENT ENCODING/DECODING OF AUDIO SIGNALS 有权
标题翻译：高效的编码/解码音频信号
公开(公告)号：EP2673771A4
公开(公告)日：2015-10-28
申请号：EP11858302
申请日：2011-02-09
申请人： ERICSSON TELEFON AB L M
发明人： GRANCHAROV VOLODYA , NORVELL ERIK , SVERRISSON SIGURDUR
IPC分类号： G10L19/02 , G10L19/00 , G10L19/24 , G10L21/0388
CPC分类号： G10L19/12 , G10L19/0204 , G10L19/0212 , G10L19/24 , G10L21/0388 , G10L2019/0008

170. 发明公开

EP2830065A1 Apparatus and method for decoding an encoded audio signal using a cross-over filter around a transition frequency 审中-公开
标题翻译：的装置和方法使用重叠滤波器的过渡频率解码编码的音频信号
公开(公告)号：EP2830065A1
公开(公告)日：2015-01-28
申请号：EP13189389.3
申请日：2013-10-18
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Disch, Sascha , Geiger, Ralf , Helmrich, Christian , Nagel, Frederik , Neukam christian , Schmidt, Konstantin , Fischer, Michael
IPC分类号： G10L21/0388 , G10L19/028 , G10L19/02
CPC分类号： G10L19/008 , G10L19/02 , G10L19/0204 , G10L19/0208 , G10L19/0212 , G10L19/022 , G10L19/025 , G10L19/03 , G10L19/032 , G10L19/06 , G10L21/0388 , G10L25/06 , H04S1/007
摘要： Apparatus for decoding an encoded audio signal comprising an encoded core signal (1), comprising: a core decoder (1400) for decoding the encoded core signal (1401) to obtain a decoded core signal; a tile generator (1404) for generating one or more spectral tiles having frequencies not included in the decoded core signal using a spectral portion of the decoded core signal; and a cross-over filter (1406) for spectrally cross-over filtering the decoded core signal and a first frequency tile having frequencies extending from a gap filling frequency (309) to an upper border frequency or for spectrally cross-over filtering a first frequency tile and a second frequency tile.
摘要翻译：一种用于包括编码信号的核心的编码音频信号的解码（1），包括：用于对编码核心信号（1401），以获得经解码的核心信号进行解码的核心解码器（1400）; 图块生成器（1404），用于产生具有不包括在核心使用解码核心信号的频谱部分的解码信号的频率的一个或多个光谱的瓷砖; 和交叉过滤器（1406）用于光谱交叉滤波解码核心信号和具有频率从间隙延伸的上边界频率或用于光谱交叉滤波的第一频率填充频率（309）到第一频率瓦片瓦片和第二频率块。

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