-
公开(公告)号：EP2513899B1
公开(公告)日：2018-02-14
申请号：EP10798039.3
申请日：2010-12-14
IPC分类号： G10L19/008 , G10L21/038
CPC分类号： G10L19/008 , G10L21/038
摘要： The present document relates to audio decoding and/or audio transcoding. In particular, the present document relates to a scheme for efficiently decoding a number M of audio channels from a bitstream comprising a higher number N of audio channels. In this context a method and system for merging a first and a second source set of spectral band replication (SBR) parameters to a target set of SBR parameters is described. The first and second source set comprise a first and second frequency band partitioning, respectively, which are different from one another. The first source set comprises a first set of energy related values associated with frequency bands of the first frequency band partitioning. The second source set comprises a second set of energy related values associated with frequency bands of the second frequency band partitioning. The target set comprises a target energy related value associated with an elementary frequency band. The method comprises the steps of breaking up the first and the second frequency band partitioning into a joint grid comprising the elementary frequency band; assigning a first value of the first set of energy related values to the elementary frequency band; assigning a second value of the second set of energy related values to the elementary frequency band; and combining the first and second value to yield the target energy related value for the elementary frequency band.
-
2.发明授权
公开(公告)号：EP3029672B1
公开(公告)日：2017-09-13
申请号：EP15196734.6
申请日：2013-02-22
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，解码和处理的技术领域。 具体涉及以有效的方式从同一音频信号的低频内容恢复音频信号的高频内容的方法。 描述了一种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来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确定对应的一组频率仓中的一组变换系数; 使用该组变换系数分别确定该组频率仓的一组仓
单调值（341） 以及对位于所述第一频率子带内的所述频率仓的集合中的两个或更多个相应的相邻频率仓组合所述一组仓值音调值（341）中的两个或更多个的第一子集，由此产生所述第一带状音调值（311， 312）用于第一频率子带。-
3.发明公开AUDIO ENCODER AND DECODER FOR INTERLEAVED WAVEFORM CODING 有权AUDIOCODIERER UND -DECODIERER ZUR VERSCHACHTELTEN WELLENFORMCODIERUNG
公开(公告)号：EP2981959A1
公开(公告)日：2016-02-10
申请号：EP14715895.0
申请日：2014-04-04
IPC分类号： G10L19/02 , G10L21/038
CPC分类号： G10L19/0208 , G10L19/02 , G10L19/0212 , G10L19/26 , G10L21/038 , G10L21/0388
摘要： There is provided methods and apparatuses for decoding and encoding of audio signals. In particular, a method for decoding includes receiving a waveform-coded signal having a spectral content corresponding to a subset of the frequency range above a cross-over frequency. The waveform-coded signal is interleaved with a parametric high frequency reconstruction of the audio signal above the cross-over frequency. In this way an improved reconstruction of the high frequency bands of the audio signal is achieved.
摘要翻译： 提供了用于对音频信号进行解码和编码的方法和装置。 特别地，一种解码方法包括：接收波形编码信号，该波形编码信号具有与交叉频率以上的频率范围子集对应的频谱内容。 波形编码信号与高于交叉频率的音频信号的参数高频重构进行交织。 以这种方式，实现了音频信号的高频带的改进的重建。
-
4.发明公开
公开(公告)号：EP2817803A2
公开(公告)日：2014-12-31
申请号：EP13705503.4
申请日：2013-02-22
发明人： THESING, Robin , SCHUG, Michael
IPC分类号： 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.
-
公开(公告)号：EP3475944B1
公开(公告)日：2020-07-15
申请号：EP17730205.6
申请日：2017-06-20
发明人： EKSTRAND, Per , THESING, Robin , VILLEMOES, Lars
IPC分类号： G10L21/00 , G10L21/0388 , G10L19/02
-
公开(公告)号：EP2740222B1
公开(公告)日：2015-04-22
申请号：EP12735906.5
申请日：2012-07-20
发明人： MUELLER, Jan , THESING, Robin , BEER, Michael
CPC分类号： G10L19/008 , G10L19/00 , H04B1/1661 , H04H40/45
-
公开(公告)号：EP2513899A2
公开(公告)日：2012-10-24
申请号：EP10798039.3
申请日：2010-12-14
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , G10L21/038
摘要： The present document relates to audio decoding and/or audio transcoding. In particular, the present document relates to a scheme for efficiently decoding a number M of audio channels from a bitstream comprising a higher number N of audio channels. In this context a method and system for merging a first and a second source set of spectral band replication (SBR) parameters to a target set of SBR parameters is described. The first and second source set comprise a first and second frequency band partitioning, respectively, which are different from one another. The first source set comprises a first set of energy related values associated with frequency bands of the first frequency band partitioning. The second source set comprises a second set of energy related values associated with frequency bands of the second frequency band partitioning. The target set comprises a target energy related value associated with an elementary frequency band. The method comprises the steps of breaking up the first and the second frequency band partitioning into a joint grid comprising the elementary frequency band; assigning a first value of the first set of energy related values to the elementary frequency band; assigning a second value of the second set of energy related values to the elementary frequency band; and combining the first and second value to yield the target energy related value for the elementary frequency band.
摘要翻译： 本文件涉及音频解码和/或音频代码转换。 特别地，本文件涉及一种用于从包括较高数量N个音频信道的比特流有效地解码数量M的音频信道的方案。 在这方面，描述了将频谱带复制（SBR）参数的第一和第二源集合合并到SBR参数的目标集合的方法和系统。 第一和第二源组分别包括彼此不同的第一和第二频带划分。 第一源组包括与第一频带划分的频带相关联的第一组能量相关值。 第二源组包括与第二频带划分的频带相关联的第二组能量相关值。 目标集合包括与基本频带相关联的目标能量相关值。 该方法包括将第一和第二频带划分为包括基本频带的联合网格的步骤; 将第一组能量相关值的第一值分配给基本频带; 将第二组能量相关值的第二值分配给基本频带; 并且组合第一和第二值以产生基本频带的目标能量相关值。
-
8.发明公开Audio decoder and decoding method using efficient downmixing 有权Audiodecodierung unter Verwendung von effizientem Downmixen
公开(公告)号：EP2360683A1
公开(公告)日：2011-08-24
申请号：EP11154910.1
申请日：2011-02-17
CPC分类号： G10L19/008 , G10L19/02 , G10L19/022 , H04S3/008
摘要： A method, an apparatus, a computer readable storage medium configured with instructions for carrying out a method, and logic encoded in one or more computer-readable tangible medium to carry out actions. The method is to decode audio data that includes N.n channels to M.m decoded audio channels, including unpacking metadata and unpacking and decoding frequency domain exponent and mantissa data; determining transform coefficients from the unpacked and decoded frequency domain exponent and mantissa data; inverse transforming the frequency domain data; and in the case M
摘要翻译： 配置有用于执行方法的指令的方法，装置，计算机可读存储介质，以及编码在一个或多个计算机可读有形介质中以执行动作的逻辑。 该方法是将包括N.n个信道的音频数据解码为M.m个解码的音频信道，包括解包元数据和解码和解码频域指数和尾数数据; 从解压缩和解码的频域指数和尾数数据确定变换系数; 逆变换频域数据; 在M
-
公开(公告)号：EP4428860A3
公开(公告)日：2024-11-06
申请号：EP24191339.1
申请日：2014-04-04
IPC分类号： G10L19/02 , G10L21/038 , G10L21/0388
摘要： There is provided methods and apparatuses for decoding and encoding of audio signals. In particular, a method for decoding includes receiving a waveform-coded signal having a spectral content corresponding to a subset of the frequency range above a cross-over frequency. The waveform-coded signal is interleaved with a parametric high frequency reconstruction of the audio signal above the cross-over frequency. In this way an improved reconstruction of the high frequency bands of the audio signal is achieved.
-
公开(公告)号：EP3761672A1
公开(公告)日：2021-01-06
申请号：EP20183399.3
申请日：2020-07-01
发明人： STAHLMANN, Alexander , BOEHM, Reinhold , LEDDY, Mark , LINZMEIER, Karsten , MATHEW, Vinay , PLAIN, Simon , PURNHAGEN, Heiko , SEHLSTROM, Leif , THESING, Robin
IPC分类号： H04S20060101
摘要： A method comprising: receiving and decoding a coded bitstream encoded with audio content including first audio objects corresponding to a first media content type of two consecutive media content types and second audio objects corresponding to a second media content type of the two consecutive media content types, and audio metadata corresponding to the audio content, the audio metadata including first and second audio object gains, respectively for the first and second audio objects, generated at least in part based on a first fading curve of the first media content type and a second fading curve of the second media content type, respectively; applying the first and second audio object gains to the first and second audio objects, respectively; rendering a sound field represented by the first audio object with the applied first audio object gain and the second audio object with the applied second audio object gain.
-
-
-
-
-
-
-
-
-
搜索结果
29 条记录 (耗时 0.017 秒)
