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51.发明授权
公开(公告)号：EP2820647B1
公开(公告)日：2018-03-21
申请号：EP13705826.9
申请日：2013-02-26
发明人： DISCH, Sascha , HERRE, Jürgen , EDLER, Bernd , NAGEL, Frederik
CPC分类号： G10L19/02 , G10L19/0204 , G10L19/26
摘要： A decoder for decoding an encoded audio signal to obtain a phase-adjusted audio signal is provided. The decoder comprises a decoding unit (110) and a phase adjustment unit (120). The decoding unit (110) is adapted to decode the encoded audio signal to obtain a decoded audio signal. The phase adjustment unit (120) is adapted to adjust the decoded audio signal to obtain the phase-adjusted audio signal. The phase adjustment unit (120) is configured to receive control information depending on a vertical phase coherence of the encoded audio signal. Moreover, the phase adjustment unit (120) is adapted to adjust the decoded audio signal based on the control information.
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52.发明授权AUDIO BANDWIDTH EXTENSION BY INSERTION OF TEMPORAL PRE-SHAPED NOISE IN FREQUENCY DOMAIN 有权插入频率域中的时间预形成噪声的音频带宽扩展
公开(公告)号：EP3063761B1
公开(公告)日：2017-11-22
申请号：EP14792794.1
申请日：2014-10-30
IPC分类号： G10L19/02 , G10L19/028 , G10L19/16 , G10L21/038 , G10L19/24 , G10L19/03
CPC分类号： G10L19/028 , G10L19/0212 , G10L19/03 , G10L19/167 , G10L19/24 , G10L21/038
摘要： An audio decoder device for decoding a bitstream includes a bitstream receiver configured to receive the bitstream and to derive an encoded audio signal from the bitstream; a core decoder module configured for deriving a decoded audio signal in a time domain from the encoded audio signal; a temporal envelope generator configured to determine a temporal envelope of the decoded audio signal; a bandwidth extension module configured to produce a frequency domain bandwidth extension signal; a time-to-frequency converter configured to transform the decoded audio signal into a frequency domain decoded audio signal; a combiner configured to combine the frequency domain decoded audio signal and the frequency domain bandwidth extension signal in order to produce a bandwidth extended frequency domain audio signal; and a frequency-to-time converter configured to transform the bandwidth extended frequency domain audio signal into a bandwidth-extended time domain audio signal.
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53.发明公开APPARATUS AND METHOD FOR SYNTHESIZING AN AUDIO SIGNAL FROM A PARAMETERIZED REPRESENTATION 审中-公开从参数化表示合成音频信号的装置和方法
公开(公告)号：EP3242294A1
公开(公告)日：2017-11-08
申请号：EP17177483.9
申请日：2009-03-10
发明人： DISCH, Sascha
CPC分类号： G10L19/0204 , G10L19/09 , G10L19/16 , G10L19/20 , G10L25/90
摘要： An apparatus for synthesizing a parameterized representation of an audio signal comprising a time portion of an audio signal, band pass filter information for a plurality of band pass filters, the band pass filter information indicating time-varying band pass filter center frequencies of band pass filters having varying band widths, which depend on a band pass filter center frequency of the corresponding band pass filter, and having amplitude modulation or phase modulation or frequency modulation information for each band pass filter for the time portion of the audio signal, comprises: an amplitude modulation synthesizer (201) for synthesizing an amplitude modulation component based on the amplitude modulation information; a frequency modulation or phase modulation synthesizer for synthesizing instantaneous frequency of phase information based on the information on a carrier frequency and a frequency modulation information for a respective band width, wherein distances in frequency between adjacent carrier frequencies are different over a frequency spectrum, an oscillator (203) for generating an output signal representing an instantaneously amplitude modulated, frequency modulated or phase modulated oscillation signal (204) for each band pass filter channel; and a combiner (205) for combining signals from the band pass filter channels and for generating an audio output signal (206) based on the signals from the band pass filter channels.
摘要翻译： 一种用于合成包括音频信号的时间部分的音频信号的参数化表示的设备，用于多个带通滤波器的带通滤波器信息，带通滤波器信息指示带通滤波器的时变带通滤波器中心频率 具有取决于相应带通滤波器的带通滤波器中心频率并且具有用于音频信号的时间部分的每个带通滤波器的振幅调制或相位调制或频率调制信息的变化的带宽包括：幅度 调制合成器（201），用于基于幅度调制信息合成幅度调制分量; 频率调制或相位调制合成器，用于基于关于载波频率的信息和用于相应带宽的频率调制信息合成相位信息的瞬时频率，其中相邻载波频率之间的频率距离在频谱上不同;振荡器 （203），用于产生表示每个带通滤波器通道的瞬时幅度调制，调频或相位调制振荡信号（204）的输出信号; 以及组合器（205），用于组合来自带通滤波器通道的信号并基于来自带通滤波器通道的信号生成音频输出信号（206）。
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54.发明授权IMPROVED MAGNITUDE RESPONSE AND TEMPORAL ALIGNMENT IN PHASE VOCODER BASED BANDWIDTH EXTENSION FOR AUDIO SIGNALS 有权基于相位声码器的音频信号带宽扩展改进的幅度响应和时间对准
公开(公告)号：EP2545551B1
公开(公告)日：2017-10-04
申请号：EP11707156.3
申请日：2011-03-04
IPC分类号： G10L21/038 , G10L19/022 , G10L19/02 , G10L19/16 , G10L19/26
CPC分类号： G10L19/0208 , G10L19/022 , G10L19/16 , G10L19/26 , G10L21/038
摘要： An apparatus for generating a bandwidth extended audio signal from an input signal, includes a patch generator for generating one or more patch signals from the input signal, wherein the patch generator is configured for performing a time stretching of subband signals from an analysis filterbank, and wherein the patch generator further includes a phase adjuster for adjusting phases of the subband signals using a filterbank-channel dependent phase correction.
摘要翻译： 一种用于从输入信号生成带宽扩展音频信号的设备，包括：用于从输入信号生成一个或多个修补信号的修补生成器，其中修补生成器被配置为执行来自分析滤波器组的子带信号的时间展宽，以及 其中所述补丁生成器还包括相位调整器，用于使用滤波器组通道相关的相位校正来调整所述子带信号的相位。
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55.发明公开AUDIO BANDWIDTH EXTENSION BY INSERTION OF TEMPORAL PRE-SHAPED NOISE IN FREQUENCY DOMAIN 有权音频信号通过插入时间预成型的噪声信号频率范围内的带宽扩展
公开(公告)号：EP3063761A1
公开(公告)日：2016-09-07
申请号：EP14792794.1
申请日：2014-10-30
CPC分类号： G10L19/028 , G10L19/0212 , G10L19/03 , G10L19/167 , G10L19/24 , G10L21/038
摘要： An audio decoder device for decoding a bitstream includes a bitstream receiver configured to receive the bitstream and to derive an encoded audio signal from the bitstream; a core decoder module configured for deriving a decoded audio signal in a time domain from the encoded audio signal; a temporal envelope generator configured to determine a temporal envelope of the decoded audio signal; a bandwidth extension module configured to produce a frequency domain bandwidth extension signal; a time-to-frequency converter configured to transform the decoded audio signal into a frequency domain decoded audio signal; a combiner configured to combine the frequency domain decoded audio signal and the frequency domain bandwidth extension signal in order to produce a bandwidth extended frequency domain audio signal; and a frequency-to-time converter configured to transform the bandwidth extended frequency domain audio signal into a bandwidth-extended time domain audio signal.
摘要翻译： 用于位流进行解码的音频解码器设备包括配置成接收所述位流，并推导对从比特流编码的音频信号的比特流接收器; 配置用于获得从编码的音频信号时域中的解码音频信号的核心解码器模块; 配置为确定性矿解码的音频信号的时间包络的时间包络产生器; 配置以产生频域带宽扩展信号带宽扩展模块; 配置成将所述解码的音频信号变换为频域的时间 - 频率转换器解码的音频信号的装置; 被配置为在频域的组合器解码的音频信号，并且在为了产生带宽扩展频域音频信号的频域带宽扩展信号的装置; 和频率 - 时间转换器配置成将所述带宽扩展频域音频信号变换成一个带宽扩展时域音频信号。
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56.发明公开APPARATUS AND METHOD FOR PROCESSING AN AUDIO SIGNAL USING A COMBINATION IN AN OVERLAP RANGE 有权设备和方法处理的音频信号，通过组合在字段重叠，
公开(公告)号：EP3028275A1
公开(公告)日：2016-06-08
申请号：EP14755081.8
申请日：2014-08-22
IPC分类号： G10L19/02 , G10L19/028 , G10L21/038
CPC分类号： G10L19/022 , G06F17/147 , G10L19/0212 , G10L19/028 , G10L19/032 , G10L21/038
摘要： An apparatus for processing an audio signal comprising a sequence of blocks (114) of spectral values comprises: a processor (100) for processing the sequence of blocks using at least one modification values (102) for a first block to obtain aliasing-reduced or aliasing-free first result signal in an overlap range (170) and using at least one second different modification value (106) for a second block of the sequence of blocks to obtain an aliasing-reduced or aliasing-free second result signal (108) in the overlap range (170); and a combiner (110) for combining the first result signal (104) and the second result signal (108) in the overlap range (170) to obtain a processed signal (112) for the overlap range (170).
摘要翻译： 用于音频信号包括频谱值的块的序列的处理的设备，包括：用于使用至少一个第一修正值用于块的序列的第一块在混叠影响的信号计算和使用至少一个不同的第二处理器 为块的序列的第二块和混叠误差信号在混叠混叠影响的信号误差较估计修正值; 和混叠影响的信号组合的组合器和混叠误差信号搜索没有由合成得到的处理信号是混叠减小的或无混叠信号。
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57.发明公开MULTI-CHANNEL AUDIO DECODER, MULTI-CHANNEL AUDIO ENCODER, METHODS, COMPUTER PROGRAM AND ENCODED AUDIO REPRESENTATION USING A DECORRELATION OF RENDERED AUDIO SIGNALS 有权多声道音频解码器，多路音频编码器，方法，计算机程序和MEMORY音频呈现使用图形渲染关系的音频信号
公开(公告)号：EP3022949A1
公开(公告)日：2016-05-25
申请号：EP14739483.7
申请日：2014-07-17
发明人： DISCH, Sascha , FUCHS, Harald , HELLMUTH, Oliver , HERRE, Jürgen , MURTAZA, Adrian , PAULUS, Jouni , RIDDERBUSCH, Falko , TERENTIV, Leon
IPC分类号： H04S3/00 , G10L19/008
CPC分类号： G10L19/008 , H04S3/008 , H04S3/02 , H04S2400/03 , H04S2400/11 , H04S2420/03
摘要： A multi-channel audio decoder for providing at least two output audio signals on the basis of an encoded representation is configured to render a plurality of decoded audio signals, which are obtained on the basis of the encoded representation, in dependence on one or more rendering parameters, to obtain a plurality of rendered audio signals. The multichannel audio decoder is configured to derive one or more decorrelated audio signals from the rendered audio signals, and to combine the rendered audio signals, or a scaled version thereof, with the one or more decorrelated audio signals, to obtain the output audio signals. A multi-channel audio encoder provides a decorrelation method parameter to control an audio decoder.
摘要翻译： 用于编码表示的基础上，提供至少两个输出音频信号的多声道音频解码器被配置以使解码的音频信号，它们是在依赖一种或多种呈现编码表示的基础上获得的多元 参数，以获得再现的音频信号的复数。 该多通道音频解码器被配置为从所呈现的音频信号导出的一个或多个解相关的音频信号，并且向呈现的音频信号，或缩放版本及其结合，与所述一个或更多个解相关的音频信号，以获得输出音频 信号。 一种多通道音频编码器提供去相关方法的参数来控制音频解码器。
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58.发明公开APPARATUS AND METHOD FOR AUDIO SIGNAL ENVELOPE ENCODING, PROCESSING AND DECODING BY SPLITTING THE AUDIO SIGNAL ENVELOPE EMPLOYING DISTRIBUTION QUANTIZATION AND CODING 有权用于音频信号包络编码，处理和解码的装置和方法，通过分配量化和编码来分离音频信号包络
公开(公告)号：EP3008725A1
公开(公告)日：2016-04-20
申请号：EP14728995.3
申请日：2014-06-10
发明人： BÄCKSTRÖM, Tom , SCHUBERT, Benjamin , MULTRUS, Markus , DISCH, Sascha , SCHMIDT, Konstantin , PIETRZYK, Grzegorz
IPC分类号： G10L19/06 , G10L19/032 , G10L19/03
CPC分类号： G10L19/06 , G10L19/03 , G10L19/032 , G10L2019/0016
摘要： An apparatus for decoding to obtain a reconstructed audio signal envelope includes a signal envelope reconstructor for generating the reconstructed audio signal envelope depending on one or more splitting points and an output interface for outputting the reconstructed audio signal envelope. The signal envelope reconstructor is configured to generate the reconstructed audio signal envelope such that the one or more splitting points divide the reconstructed audio signal envelope into two or more audio signal envelope portions, and to generate the reconstructed audio signal envelope such that, for each of the two or more signal envelope portions, an absolute value of its signal envelope portion value is greater than half of an absolute value of the signal envelope portion value of each of the other signal envelope portions.
摘要翻译： 提供了一种用于解码以获得重建的音频信号包络的装置。 该设备包括信号包络重构器（110），用于根据一个或多个分裂点产生重建的音频信号包络。 此外，该设备包括用于输出重建的音频信号包络的输出接口（120）。 信号包络重构器（110）被配置为生成重建的音频信号包络，使得一个或多个分裂点将重建的音频信号包络划分成两个或更多个音频信号包络部分。 分配规则根据所述信号包络部分为两个或更多个信号包络部分的每个信号包络部分定义信号包络部分值。 此外，信号包络重构器（110）被配置为生成重建的音频信号包络，使得对于两个或更多个信号包络部分中的每一个，其信号包络部分值的绝对值大于绝对值的一半 其他每个信号包络部分的信号包络部分值。
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59.发明公开AUDIO OBJECT SEPARATION FROM MIXTURE SIGNAL USING OBJECT-SPECIFIC TIME/FREQUENCY RESOLUTIONS 审中-公开音频混合信号与对象特定的时间和频率分辨率对象分离
公开(公告)号：EP2997572A1
公开(公告)日：2016-03-23
申请号：EP14725403.1
申请日：2014-05-09
发明人： DISCH, Sascha , PAULUS, Jouni , KASTNER, Thorsten
IPC分类号： G10L19/008 , G10L19/20 , G10L25/18
CPC分类号： G10L19/008 , G10L19/20 , G10L25/18
摘要： An audio decoder is proposed for decoding a multi-object audio signal consisting of a downmix signal X and side information PSI. The side information comprises object-specific side information PSI i for an audio object s i in a time/frequency region R(t R ,f R ), and object-specific time/frequency resolution information TFRI i indicative of an object-specific time/frequency resolution TFR h of the object-specific side information for the audio object s i in the time/frequency region R(t R ,f R ). The audio decoder comprises an object-specific time/frequency resolution determiner 110 configured to determine the object-specific time/frequency resolution information TFRI i from the side information PSI for the audio object s i . The audio decoder further comprises an object separator 120 configured to separate the audio object s i from the downmix signal X using the object-specific side information in accordance with the object-specific time/frequency resolution TFRI i . A corresponding encoder and corresponding methods for decoding or encoding are also described.
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60.发明公开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 审中-公开解码器，用于生成FREQUENZVERBESSERTEN音频信号方法的解码，编码器，用于产生编码信号和方法的编码为基础的选择紧凑式侧信息
公开(公告)号：EP2951828A1
公开(公告)日：2015-12-09
申请号：EP14701550.7
申请日：2014-01-28
IPC分类号： G10L21/0388
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.
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