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1. 发明申请

WO2018177608A1 APPARATUS FOR POST-PROCESSING AN AUDIO SIGNAL USING A TRANSIENT LOCATION DETECTION 审中-公开
公开(公告)号：WO2018177608A1
公开(公告)日：2018-10-04
申请号：PCT/EP2018/025076
申请日：2018-03-28
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER UNIVERSITÄT ERLANGEN-NÜRNBERG
发明人： DISCH, Sascha , UHLE, Christian , GAMPP, Patrick , RICHTER, Daniel , HELLMUTH, Oliver , HERRE, Jürgen , PROKEIN, Peter , KARAMPOURNIOTIS, Antonios , HAVENSTEIN, Julia
IPC分类号： G10L19/26 , G10L19/025 , G10L19/02
摘要： Apparatus for post-processing an audio signal, comprising: a converter (100) for converting the audio signal into a time-frequency representation; a transient location estimator (120) for estimating a location in time of a transient portion using the audio signal or the time-frequency representation; and a signal manipulator (140) for manipulating the time-frequency representation, wherein the signal manipulator (140) is configured to reduce or eliminate a pre-echo in the time-frequency representation at a location in time before the transient location or to perform a shaping of the time-frequency representation at the transient location to amplify an attack of the transient portion.

2. 发明申请

WO2015011015A1 MULTI-CHANNEL AUDIO DECODER, MULTI-CHANNEL AUDIO ENCODER, METHODS, COMPUTER PROGRAM AND ENCODED AUDIO REPRESENTATION USING A DECORRELATION OF RENDERED AUDIO SIGNALS 审中-公开
标题翻译：多通道音频解码器，多声道音频编码器，方法，计算机程序和编码音频表示，使用渲染音频信号进行装饰
公开(公告)号：WO2015011015A1
公开(公告)日：2015-01-29
申请号：PCT/EP2014/065397
申请日：2014-07-17
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITÄT ERLANGEN-NÜRNBERG
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：用于基于经编码的表示来提供至少两个输出音频信号的多声道音频解码器被配置为根据编码的表示来渲染基于一个或多个渲染的多个解码的音频信号参数，以获得多个呈现的音频信号。多声道音频解码器被配置为从所渲染的音频信号中导出一个或多个去相关音频信号，并且将所呈现的音频信号或其缩放版本与一个或多个去相关的音频信号组合以获得输出音频信号。多声道音频编码器提供解相关方法参数来控制音频解码器。

3. 发明申请

WO2015025052A1 APPARATUS AND METHOD FOR PROCESSING AN AUDIO SIGNAL USING AN ALIASING ERROR SIGNAL 审中-公开
标题翻译：用于处理使用消息错误信号的音频信号的装置和方法
公开(公告)号：WO2015025052A1
公开(公告)日：2015-02-26
申请号：PCT/EP2014/067945
申请日：2014-08-22
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITÄT ERLANGEN-NÜRNBERG
发明人： DISCH, Sascha , NAGEL, Frederik , GEIGER, Ralf , NEUKAM, Christian , EDLER, Bernd
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 of spectral values, comprises: a processor (150) for calculating an aliasing-affected signal (154) using at least one first modification value (102) for a first block of the sequence of blocks and using at least one different second modification value (106) for a second block of the sequence of blocks and for estimating an aliasing-error signal (158) representing an aliasing-error in the aliasing-affected signal (154); and a combiner (152) for combining the aliasing-affected signal (154) and the aliasing-error signal (158) such that a processed signal obtained by the combining is an aliasing-reduced or aliasing-free signal (112).
摘要翻译：一种用于处理包括频谱值块序列的音频信号的装置，包括：处理器（150），用于使用所述序列的第一块的至少一个第一修改值（102）来计算混叠影响信号（154）并且为块序列的第二块使用至少一个不同的第二修改值（106），并且用于估计表示混叠影响信号（154）中的混叠误差的混叠误差信号（158）。以及组合器（152），用于组合受混叠影响的信号（154）和混叠误差信号（158），使得通过组合获得的处理信号是混叠减少或无混叠信号（112）。

4. 发明申请

WO2015010999A1 APPARATUS AND METHOD FOR REALIZING A SAOC DOWNMIX OF 3D AUDIO CONTENT 审中-公开
标题翻译：用于实现3D音频内容的下降的装置和方法
公开(公告)号：WO2015010999A1
公开(公告)日：2015-01-29
申请号：PCT/EP2014/065290
申请日：2014-07-16
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITÄT ERLANGEN-NÜRNBERG
发明人： DISCH, Sascha , FUCHS, Harald , HELLMUTH, Oliver , HERRE, Jürgen , MURTAZA, Adrian , RIDDERBUSCH, Falko , TERENTIV, Leon , PAULUS, Jouni
IPC分类号： G10L19/008 , H04S3/00
CPC分类号： H04S3/02 , G10L19/008 , H04S3/00 , H04S3/006 , H04S3/008 , H04S7/305 , H04S2400/01 , H04S2400/03 , H04S2400/11 , H04S2400/13 , H04S2420/03
摘要： An apparatus for generating one or more audio output channels is provided. The apparatus comprises a parameter processor (110) for calculating output channel mixing information and a downmix processor (120) for generating the one or more audio output channels. The downmix processor (120) is configured to receive an audio transport signal comprising one or more audio transport channels, wherein two or more audio object signals are mixed within the audio transport signal, and wherein the number of the one or more audio transport channels is smaller than the number of the two or more audio object signals. The audio transport signal depends on a first mixing rule and on a second mixing rule. The first mixing rule indicates how to mix the two or more audio object signals to obtain a plurality of premixed channels. Moreover, the second mixing rule indicates how to mix the plurality of premixed channels to obtain the one or more audio transport channels of the audio transport signal. The parameter processor (110) is configured to receive information on the second mixing rule, wherein the information on the second mixing rule indicates how to mix the plurality of premixed signals such that the one or more audio transport channels are obtained. Moreover, the parameter processor (110) is configured to calculate the output channel mixing information depending on an audio objects number indicating the number of the two or more audio object signals, depending on a premixed channels number indicating the number of the plurality of premixed channels, and depending on the information on the second mixing rule. The downmix processor (120) is configured to generate the one or more audio output channels from the audio transport signal depending on the output channel mixing information.
摘要翻译：提供一种用于产生一个或多个音频输出通道的装置。该装置包括用于计算输出通道混合信息的参数处理器（110）和用于产生一个或多个音频输出通道的下混处理器（120）。下混合处理器（120）被配置为接收包括一个或多个音频传输信道的音频传输信号，其中在音频传输信号内混合两个或更多个音频对象信号，并且其中一个或多个音频传输信道的数目为小于两个或更多个音频对象信号的数量。音频传输信号取决于第一混合规则和第二混合规则。第一混合规则指示如何混合两个或多个音频对象信号以获得多个预混频道。此外，第二混合规则指示如何混合多个预混频道以获得音频传输信号的一个或多个音频传输信道。参数处理器（110）被配置为接收关于第二混合规则的信息，其中关于第二混合规则的信息指示如何混合多个预混合信号，使得获得一个或多个音频传输信道。此外，参数处理器（110）被配置为根据指示多个预混频道的数量的预设频道号，根据指示两个或多个音频对象信号的数量的音频对象号码来计算输出频道混合信息，并且取决于关于第二混合规则的信息。下混合处理器（120）被配置为根据输出信道混合信息从音频传输信号产生一个或多个音频输出信道。

5. 发明申请

WO2022189481A1 AUDIO DECORRELATOR, PROCESSING SYSTEM AND METHOD FOR DECORRELATING AN AUDIO SIGNAL 审中-公开
公开(公告)号：WO2022189481A1
公开(公告)日：2022-09-15
申请号：PCT/EP2022/055983
申请日：2022-03-09
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITÄT ERLANGEN-NÜRNBERG
发明人： DISCH, Sascha , ANEMÜLLER, Carlotta , HERRE, Jürgen
IPC分类号： G10L19/00 , G10L19/02 , G10L21/02 , G10L21/0316
摘要： A decorrelator comprises a plurality of delay units, wherein each delay unit is configured for receiving a part of a frequency representation being based on an audio signal, wherein each delay unit is configured for delaying the received part to provide a delayed part. The decorrelator comprises an envelope shaper configured for receiving and combining signals being based on the delayed parts of the frequency representation. The envelope shaper receives the frequency representation of the audio signal and is configured for adjusting an energy of the delayed parts in respect of the frequency representation of the audio signal. The envelope shaper is configured for providing a combined shaped frequency representation. Transient signal portions are handled by an adapted operation of the decorrelator.

6. 发明申请

WO2018036972A1 APPARATUS AND METHOD FOR ENCODING AN AUDIO SIGNAL USING A COMPENSATION VALUE 审中-公开
标题翻译：用补偿值编码音频信号的装置和方法
公开(公告)号：WO2018036972A1
公开(公告)日：2018-03-01
申请号：PCT/EP2017/071048
申请日：2017-08-21
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITÄT ERLANGEN-NÜRNBERG
发明人： DISCH, Sascha , REUTELHUBER, Franz , BÜTHE, Jan , MULTRUS, Markus , EDLER, Bernd
IPC分类号： G10L21/038
摘要： An apparatus for encoding an audio signal, comprises: a core encoder for core encoding first audio data in a first spectral band; a parametric coder for parametrically coding second audio data in a second spectral band being different from the first spectral band, wherein the parametric coder comprises: an analyzer for analyzing first audio data in the first spectral band to obtain a first analysis result and for analyzing second audio data in the second spectral band to obtain a second analysis result; a compensator for calculating a compensation value using the first analysis result and the second analysis result; and a parameter calculated for calculating a parameter from the second audio data in the second spectral band using the compensation value.
摘要翻译：一种用于对音频信号进行编码的设备，包括：核心编码器，用于对第一频谱带中的第一音频数据进行核心编码; 参数编码器，用于参数化地编码与所述第一光谱带不同的第二光谱带中的第二音频数据，其中所述参数编码器包括：分析器，用于分析所述第一光谱带中的第一音频数据以获得第一分析结果并分析第二第二频谱段中的音频数据以获得第二分析结果; 补偿器，用于使用第一分析结果和第二分析结果来计算补偿值; 以及使用补偿值计算用于从第二频谱带中的第二音频数据计算参数的参数。

7. 发明申请

WO2015011024A1 APPARATUS AND METHOD FOR ENHANCED SPATIAL AUDIO OBJECT CODING 审中-公开
标题翻译：用于增强空间音频对象编码的装置和方法
公开(公告)号：WO2015011024A1
公开(公告)日：2015-01-29
申请号：PCT/EP2014/065427
申请日：2014-07-17
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITÄT ERLANGEN-NÜRNBERG
发明人： HERRE, Jürgen , MURTAZA, Adrian , PAULUS, Jouni , DISCH, Sascha , FUCHS, Harald , HELLMUTH, Oliver , RIDDERBUSCH, Falko , TERENTIV, Leon
IPC分类号： G10L19/008 , H04S3/00
CPC分类号： H04S3/02 , G10L19/008 , H04S3/00 , H04S3/006 , H04S3/008 , H04S7/305 , H04S2400/01 , H04S2400/03 , H04S2400/11 , H04S2400/13 , H04S2420/03
摘要： An apparatus for generating one or more audio output channels is provided. The apparatus comprises a parameter processor (110) for calculating mixing information and a downmix processor (120) for generating the one or more audio output channels. The downmix processor (120) is configured to receive an audio transport signal comprising one or more audio transport channels. One or more audio channel signals are mixed within the audio transport signal, and one or more audio object signals are mixed within the audio transport signal, and wherein the number of the one or more audio transport channels is smaller than the number of the one or more audio channel signals plus the number of the one or more audio object signals. The parameter processor (110) is configured to receive downmix information indicating information on how the one or more audio channel signals and the one or more audio object signals are mixed within the one or more audio transport channels, and wherein the parameter processor (110) is configured to receive covariance information. Moreover, the parameter processor (110) is configured to calculate the mixing information depending on the downmix information and depending on the covariance information. The downmix processor (120) is configured to generate the one or more audio output channels from the audio transport signal depending on the mixing information. The covariance information indicates a level difference information for at least one of the one or more audio channel signals and further indicates a level difference information for at least one of the one or more audio object signals. However, the covariance information does not indicate correlation information for any pair of one of the one or more audio channel signals and one of the one or more audio object signals.
摘要翻译：提供一种用于产生一个或多个音频输出通道的装置。该装置包括用于计算混合信息的参数处理器（110）和用于生成一个或多个音频输出通道的下混处理器（120）。下混合处理器（120）被配置为接收包括一个或多个音频传输信道的音频传输信号。一个或多个音频信道信号在音频传输信号内混合，并且一个或多个音频对象信号被混合在音频传输信号内，并且其中一个或多个音频传输信道的数量小于一个或多个更多的音频信道信号加上一个或多个音频对象信号的数量。参数处理器（110）被配置为接收指示关于一个或多个音频信道信号和一个或多个音频对象信号如何混合在一个或多个音频传输信道内的信息的下混信息，并且其中参数处理器（110）被配置为接收协方差信息。此外，参数处理器（110）被配置为根据缩混信息并根据协方差信息来计算混合信息。下混合处理器（120）被配置为根据混合信息从音频传输信号产生一个或多个音频输出声道。协方差信息指示一个或多个音频信道信号中的至少一个的电平差信息，并且还指示一个或多个音频对象信号中的至少一个的电平差信息。然而，协方差信息不表示一个或多个音频信道信号中的任何一个对和一个或多个音频对象信号中的一个的相关信息。

8. 发明申请

WO2015025051A1 APPARATUS AND METHOD FOR PROCESSING AN AUDIO SIGNAL USING A COMBINATION IN AN OVERLAP RANGE 审中-公开
标题翻译：使用叠加范围内组合处理音频信号的装置和方法
公开(公告)号：WO2015025051A1
公开(公告)日：2015-02-26
申请号：PCT/EP2014/067944
申请日：2014-08-22
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITÄT ERLANGEN-NÜRNBERG
发明人： DISCH, Sascha , NAGEL, Frederik , GEIGER, Ralf , NEUKAM, Christian , EDLER, Bernd
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：一种用于处理包括频谱值块序列（114）的音频信号的装置包括：处理器（100），用于使用至少一个第一块的修改值（102）来处理所述块序列以获得混叠减少或在重叠范围（170）中使用无混叠的第一结果信号，并且为块序列的第二块使用至少一个第二不同修改值（106）以获得无混叠减少或无混叠的第二结果信号（108）在重叠范围内（170）; 以及用于在所述重叠范围（170）中组合所述第一结果信号（104）和所述第二结果信号（108）以获得所述重叠范围（170）的处理信号（112）的组合器（110）。

9. 发明申请

WO2014198726A1 APPARATUS AND METHOD FOR AUDIO SIGNAL ENVELOPE ENCODING, PROCESSING AND DECODING BY MODELLING A CUMULATIVE SUM REPRESENTATION EMPLOYING DISTRIBUTION QUANTIZATION AND CODING 审中-公开
标题翻译：用于音频信号编码，处理和解码的装置和方法，通过建立使用分布式量化和编码的累积表示
公开(公告)号：WO2014198726A1
公开(公告)日：2014-12-18
申请号：PCT/EP2014/062034
申请日：2014-06-10
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITÄT ERLANGEN-NÜRNBERG
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 , G10L19/0204 , G10L19/0208 , G10L19/032
摘要： An apparatus for generating an audio signal envelope from one or more coding values is provided. The apparatus comprises an input interface (1610) for receiving the one or more coding values, and an envelope generator (1620) for generating the audio signal envelope depending on the one or more coding values. The envelope generator (1620) is configured to generate an aggregation function depending on the one or more coding values, wherein the aggregation function comprises a plurality of aggregation points, wherein each of the aggregation points comprises an argument value and an aggregation value, wherein the aggregation function monotonically increases, and wherein each of the one or more coding values indicates at least one of an argument value and an aggregation value of one of the aggregation points of the aggregation function. Moreover, the envelope generator (1620) is configured to generate the audio signal envelope such that the audio signal envelope comprises a plurality of envelope points, wherein each of the envelope points comprises an argument value and an envelope value, and wherein an envelope point of the audio signal envelope is assigned to each of the aggregation points of the aggregation function such that the argument value of said envelope point is equal to the argument value of said aggregation point. Furthermore, the envelope generator (1620) is configured to generate the audio signal envelope such that the envelope value of each of the envelope points of the audio signal envelope depends on the aggregation value of at least one aggregation point of the aggregation function.
摘要翻译：提供一种用于从一个或多个编码值产生音频信号包络的装置。该装置包括用于接收一个或多个编码值的输入接口（1610），以及用于根据一个或多个编码值产生音频信号包络的包络发生器（1620）。包络生成器（1620）被配置为根据一个或多个编码值生成聚合函数，其中聚合函数包括多个聚合点，其中每个聚合点包括自变量值和聚合值，其中，聚合函数单调增加，并且其中一个或多个编码值中的每一个表示聚合函数的聚合点之一的参数值和聚合值中的至少一个。此外，信封发生器（1620）被配置为产生音频信号包络，使得音频信号包络包括多个包络点，其中每个包络点包括参数值和包络值，并且其中包络点音频信号包络被分配给聚合功能的每个聚合点，使得所述包络点的参数值等于所述聚合点的参数值。此外，包络发生器（1620）被配置为产生音频信号包络，使得音频信号包络的每个包络点的包络值取决于聚合函数的至少一个聚合点的聚合值。

10. 发明申请

WO2014198724A1 APPARATUS AND METHOD FOR AUDIO SIGNAL ENVELOPE ENCODING, PROCESSING AND DECODING BY SPLITTING THE AUDIO SIGNAL ENVELOPE EMPLOYING DISTRIBUTION QUANTIZATION AND CODING 审中-公开
标题翻译：音频信号编码，处理和解码的设备和方法，分析使用分配量化和编码的音频信号包
公开(公告)号：WO2014198724A1
公开(公告)日：2014-12-18
申请号：PCT/EP2014/062032
申请日：2014-06-10
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITÄT ERLANGEN-NÜRNBERG
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 is provided. The apparatus comprises a signal envelope reconstructor (110) for generating the reconstructed audio signal envelope depending on one or more splitting points. Moreover, the apparatus comprises an output interface (120) for outputting the reconstructed audio signal envelope. The signal envelope reconstructor (110) 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. An assignment rule defines a signal envelope portion value for each signal envelope portion of the two or more signal envelope portions depending on said signal envelope portion. Moreover, the signal envelope reconstructor (110) is configured 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：提供一种用于解码以获得重构的音频信号包络的装置。该装置包括用于根据一个或多个分割点产生重构音频信号包络的信号包络重建器（110）。此外，该装置包括用于输出重构的音频信号包络的输出接口（120）。信号包络重构器（110）被配置为产生重建的音频信号包络，使得一个或多个分割点将重建的音频信号包络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定义两个或多个信号包络部分的每个信号包络部分的信号包络部分值。此外，信号包络重建器（110）被配置为产生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每个其它信号包络部分的信号包络部分值。

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