公开(公告)号：US08447620B2

公开(公告)日：2013-05-21

申请号：US13081223

申请日：2011-04-06

申请人： Max Neuendorf ,  Stefan Bayer ,  Jérémie Lecomte ,  Guillaume Fuchs ,  Julien Robilliard ,  Nikolaus Rettelbach ,  Frederik Nagel ,  Ralf Geiger ,  Markus Multrus ,  Bernhard Grill ,  Philippe Gournay ,  Redwan Salami

发明人： Max Neuendorf ,  Stefan Bayer ,  Jérémie Lecomte ,  Guillaume Fuchs ,  Julien Robilliard ,  Nikolaus Rettelbach ,  Frederik Nagel ,  Ralf Geiger ,  Markus Multrus ,  Bernhard Grill ,  Philippe Gournay ,  Redwan Salami

IPC分类号： G10L19/008

CPC分类号： G10L19/008 ,  G10L19/0017 ,  G10L19/0212 ,  G10L19/173 ,  G10L19/18 ,  G10L2019/0008

摘要： An audio encoder for encoding an audio signal has a first coding branch, the first coding branch comprising a first converter for converting a signal from a time domain into a frequency domain. Furthermore, the audio encoder has a second coding branch comprising a second time/frequency converter. Additionally, a signal analyzer for analyzing the audio signal is provided. The signal analyzer, on the hand, determines whether an audio portion is effective in the encoder output signal as a first encoded signal from the first encoding branch or as a second encoded signal from a second encoding branch. On the other hand, the signal analyzer determines a time/frequency resolution to be applied by the converters when generating the encoded signals. An output interface includes, in addition to the first encoded signal and the second encoded signal, a resolution information identifying the resolution used by the first time/frequency converter and used by the second time/frequency converter.

公开(公告)号：US20110238425A1

公开(公告)日：2011-09-29

申请号：US13081223

申请日：2011-04-06

申请人： Max Neuendorf ,  Stefan Bayer ,  Jérémie Lecomte ,  Guillaume Fuchs ,  Julien Robilliard ,  Nikolaus Rettelbach ,  Frederik Nagel ,  Ralf Geiger ,  Markus Multrus ,  Bernhard Grill ,  Philippe Gournay ,  Redwan Salami

发明人： Max Neuendorf ,  Stefan Bayer ,  Jérémie Lecomte ,  Guillaume Fuchs ,  Julien Robilliard ,  Nikolaus Rettelbach ,  Frederik Nagel ,  Ralf Geiger ,  Markus Multrus ,  Bernhard Grill ,  Philippe Gournay ,  Redwan Salami

IPC分类号： G06F17/00

CPC分类号： G10L19/008 ,  G10L19/0017 ,  G10L19/0212 ,  G10L19/173 ,  G10L19/18 ,  G10L2019/0008

摘要： An audio encoder for encoding an audio signal has a first coding branch, the first coding branch comprising a first converter for converting a signal from a time domain into a frequency domain. Furthermore, the audio encoder has a second coding branch comprising a second time/frequency converter. Additionally, a signal analyzer for analyzing the audio signal is provided. The signal analyzer, on the hand, determines whether an audio portion is effective in the encoder output signal as a first encoded signal from the first encoding branch or as a second encoded signal from a second encoding branch. On the other hand, the signal analyzer determines a time/frequency resolution to be applied by the converters when generating the encoded signals. An output interface includes, in addition to the first encoded signal and the second encoded signal, a resolution information identifying the resolution used by the first time/frequency converter and used by the second time/frequency converter.

摘要翻译： 用于编码音频信号的音频编码器具有第一编码分支，所述第一编码分支包括用于将来自时域的信号转换成频域的第一转换器。 此外，音频编码器具有包括第二时间/频率转换器的第二编码分支。 另外，提供了用于分析音频信号的信号分析器。 手持信号分析仪确定音频部分是否在编码器输出信号中作为来自第一编码分支的第一编码信号或来自第二编码分支的第二编码信号有效。 另一方面，当生成编码信号时，信号分析器确定由转换器施加的时间/频率分辨率。 除了第一编码信号和第二编码信号之外，输出接口包括识别由第一时间/频率转换器使用并由第二时间/频率转换器使用的分辨率的分辨率信息。

公开(公告)号：US20100217607A1

公开(公告)日：2010-08-26

申请号：US12694912

申请日：2010-01-27

申请人： Max Neuendorf ,  Jeremie Lecomte ,  Markus Multrus ,  Stefan Bayer ,  Frederik Nagel ,  Guillaume Fuchs ,  Julien Robilliard ,  Nikolaus Rettelbach ,  Ralf Geiger ,  Bernhard Grill

发明人： Max Neuendorf ,  Jeremie Lecomte ,  Markus Multrus ,  Stefan Bayer ,  Frederik Nagel ,  Guillaume Fuchs ,  Julien Robilliard ,  Nikolaus Rettelbach ,  Ralf Geiger ,  Bernhard Grill

IPC分类号： G06F17/00

CPC分类号： G10L19/022 ,  G10L19/20

摘要： An audio decoder for providing a decoded representation of an audio content on the basis of an encoded representation of the audio content comprises a linear-prediction-domain decoder core configured to provide a time-domain representation of an audio frame on the basis of a set of linear-prediction domain parameters associated with the audio frame and a frequency-domain decoder core configured to provide a time-domain representation of an audio frame on the basis of a set of frequency-domain parameters, taking into account a transform window out of a set comprising a plurality of different transform windows. The audio decoder comprises a signal combiner configured to overlap-and-add-time-domain representations of subsequent audio frames encoded in different domains, in order to smoothen a transition between the time-domain representations of the subsequent frames. The set of transform windows comprises one or more windows specifically adapted for a transition between a frequency-domain core mode and a linear-prediction-domain core mode.

摘要翻译： 一种音频解码器，用于基于音频内容的编码表示来提供音频内容的解码表示，包括线性预测域解码器核心，被配置为基于一组设置提供音频帧的时域表示 与所述音频帧相关联的线性预测域参数和频域解码器核心，所述频域解码器核心被配置为基于一组频域参数来提供音频帧的时域表示，其考虑从 一组包括多个不同的变换窗口。 音频解码器包括信号组合器，其被配置为对在不同域中编码的后续音频帧进行重叠和相加时域表示，以平滑后续帧的时域表示之间的转换。 变换窗口集合包括一个或多个窗口，其特别适用于频域核心模式和线性预测域核心模式之间的转换。

公开(公告)号：US08457975B2

公开(公告)日：2013-06-04

申请号：US12694912

申请日：2010-01-27

申请人： Max Neuendorf ,  Jeremie Lecomte ,  Markus Multrus ,  Stefan Bayer ,  Frederik Nagel ,  Guillaume Fuchs ,  Julien Robilliard ,  Nikolaus Rettelbach ,  Ralf Geiger ,  Bernhard Grill

发明人： Max Neuendorf ,  Jeremie Lecomte ,  Markus Multrus ,  Stefan Bayer ,  Frederik Nagel ,  Guillaume Fuchs ,  Julien Robilliard ,  Nikolaus Rettelbach ,  Ralf Geiger ,  Bernhard Grill

IPC分类号： G10L21/00

CPC分类号： G10L19/022 ,  G10L19/20

摘要： An audio decoder for providing a decoded representation of an audio content on the basis of an encoded representation of the audio content comprises a linear-prediction-domain decoder core configured to provide a time-domain representation of an audio frame on the basis of a set of linear-prediction domain parameters associated with the audio frame and a frequency-domain decoder core configured to provide a time-domain representation of an audio frame on the basis of a set of frequency-domain parameters, taking into account a transform window out of a set comprising a plurality of different transform windows. The audio decoder comprises a signal combiner configured to overlap-and-add-time-domain representations of subsequent audio frames encoded in different domains, in order to smoothen a transition between the time-domain representations of the subsequent frames. The set of transform windows comprises one or more windows specifically adapted for a transition between a frequency-domain core mode and a linear-prediction-domain core mode.

摘要翻译： 一种音频解码器，用于基于音频内容的编码表示来提供音频内容的解码表示，包括线性预测域解码器核心，被配置为基于一组设置提供音频帧的时域表示 与所述音频帧相关联的线性预测域参数和频域解码器核心，所述频域解码器核心被配置为基于一组频域参数来提供音频帧的时域表示，其考虑从 一组包括多个不同的变换窗口。 音频解码器包括信号组合器，其被配置为对在不同域中编码的后续音频帧进行重叠和相加时域表示，以平滑后续帧的时域表示之间的转换。 变换窗口集合包括一个或多个窗口，其特别适用于频域核心模式和线性预测域核心模式之间的转换。

公开(公告)号：US08494865B2

公开(公告)日：2013-07-23

申请号：US13081241

申请日：2011-04-06

申请人： Guillaume Fuchs ,  Markus Multrus ,  Ralf Geiger ,  Arne Borsum ,  Frederik Nagel ,  Julien Robilliard ,  Vignesh Subbaraman ,  Jeremie Lecomte

发明人： Guillaume Fuchs ,  Markus Multrus ,  Ralf Geiger ,  Arne Borsum ,  Frederik Nagel ,  Julien Robilliard ,  Vignesh Subbaraman ,  Jeremie Lecomte

IPC分类号： G10L19/00

CPC分类号： G10L19/0017 ,  G10L19/02 ,  G10L19/0204 ,  G10L19/022 ,  G10L19/028 ,  G10L19/035 ,  G10L25/18

摘要： An audio decoder for providing a decoded audio information on the basis of an entropy encoded audio information includes a context-based entropy decoder configured to decode the entropy-encoded audio information in dependence on a context, which context is based on a previously-decoded audio information in a non-reset state-of-operation. The context-based entropy decoder is configured to select a mapping information, for deriving the decoded audio information from the encoded audio information, in dependence on the context. The context-based entropy decoder includes a context resetter configured to reset the context for selecting the mapping information to a default context, which default context is independent from the previously-decoded audio information, in response to a side information of the encoded audio information.

摘要翻译： 用于基于熵编码的音频信息提供解码的音频信息的音频解码器包括：基于上下文的熵解码器，其被配置为根据上下文来解码熵编码的音频信息，该上下文基于先前解码的音频 信息处于非复位操作状态。 基于上下文的熵解码器被配置为选择映射信息，用于根据上下文从编码的音频信息中导出解码的音频信息。 基于上下文的熵解码器包括上下文重置器，被配置为响应于所编码的音频信息的辅助信息，重新设置上下文以选择映射信息到默认上下文，该缺省上下文独立于先前解码的音频信息。

公开(公告)号：US20110238426A1

公开(公告)日：2011-09-29

申请号：US13081241

申请日：2011-04-06

申请人： Guillaume Fuchs ,  Markus Multrus ,  Ralf Geiger ,  Arne Borsum ,  Frederik Nagel ,  Julien Robilliard ,  Vignesh Subbaraman ,  Jeremie Lecomte

发明人： Guillaume Fuchs ,  Markus Multrus ,  Ralf Geiger ,  Arne Borsum ,  Frederik Nagel ,  Julien Robilliard ,  Vignesh Subbaraman ,  Jeremie Lecomte

IPC分类号： G10L19/00

CPC分类号： G10L19/0017 ,  G10L19/02 ,  G10L19/0204 ,  G10L19/022 ,  G10L19/028 ,  G10L19/035 ,  G10L25/18

摘要： An audio decoder for providing a decoded audio information on the basis of an entropy encoded audio information includes a context-based entropy decoder configured to decode the entropy-encoded audio information in dependence on a context, which context is based on a previously-decoded audio information in a non-reset state-of-operation. The context-based entropy decoder is configured to select a mapping information, for deriving the decoded audio information from the encoded audio information, in dependence on the context. The context-based entropy decoder includes a context resetter configured to reset the context for selecting the mapping information to a default context, which default context is independent from the previously-decoded audio information, in response to a side information of the encoded audio information.

摘要翻译： 用于基于熵编码的音频信息提供解码的音频信息的音频解码器包括：基于上下文的熵解码器，其被配置为根据上下文来解码熵编码的音频信息，该上下文基于先前解码的音频 信息处于非复位操作状态。 基于上下文的熵解码器被配置为选择映射信息，用于根据上下文从编码的音频信息中导出解码的音频信息。 基于上下文的熵解码器包括上下文重置器，被配置为响应于所编码的音频信息的辅助信息，重新设置上下文以选择映射信息到默认上下文，该缺省上下文独立于先前解码的音频信息。

公开(公告)号：US08386268B2

公开(公告)日：2013-02-26

申请号：US13107687

申请日：2011-05-13

申请人： Frederik Nagel ,  Markus Multrus ,  Jeremie Lecomte ,  Stefan Bayer ,  Guillaume Fuchs ,  Johannes Hilpert ,  Julien Robilliard

发明人： Frederik Nagel ,  Markus Multrus ,  Jeremie Lecomte ,  Stefan Bayer ,  Guillaume Fuchs ,  Johannes Hilpert ,  Julien Robilliard

IPC分类号： G10L19/00

CPC分类号： G10L19/24 ,  G10L21/038

摘要： An apparatus for generating a synthesis audio signal using a patching control signal has a first converter, a spectral domain patch generator, a high frequency reconstruction manipulator and a combiner. The first converter is configured for converting a time portion of an audio signal into a spectral representation. The spectral domain patch generator is configured for performing a plurality of different spectral domain patching algorithms, wherein each patching algorithm generates a modified spectral representation having spectral components in an upper frequency band derived from corresponding spectral components in a core frequency band of the audio signal. The spectral domain patch generator is furthermore configured to select a first spectral domain patching algorithm from the plurality of patching algorithms for a first time portion and a second spectral domain patching algorithm from the plurality of patching algorithm for a second different time portion in accordance with the patching control signal to obtain the modified spectral representation.

摘要翻译： 使用补丁控制信号产生合成音频信号的装置具有第一转换器，频域补丁发生器，高频重建操纵器和组合器。 第一转换器被配置为将音频信号的时间部分转换为频谱表示。 频域补丁生成器被配置用于执行多个不同的频域修补算法，其中每个修补算法生成具有从音频信号的核心频带中的相应频谱分量导出的上频带中的频谱分量的修改频谱表示。 频域补丁生成器还被配置为根据来自第一时间部分的多个修补算法和来自用于第二不同时间部分的多个修补算法的第二频域修补算法来选择第一频域修补算法 修补控制信号以获得修改的光谱表示。

公开(公告)号：US20110282675A1

公开(公告)日：2011-11-17

申请号：US13107687

申请日：2011-05-13

申请人： Frederik Nagel ,  Markus Multrus ,  Jeremie Lecomte ,  Stefan Bayer ,  Guillaume Fuchs ,  Johannes Hilpert ,  Julien Robilliard

发明人： Frederik Nagel ,  Markus Multrus ,  Jeremie Lecomte ,  Stefan Bayer ,  Guillaume Fuchs ,  Johannes Hilpert ,  Julien Robilliard

IPC分类号： G10L19/00

CPC分类号： G10L19/24 ,  G10L21/038

摘要： An apparatus for generating a synthesis audio signal using a patching control signal has a first converter, a spectral domain patch generator, a high frequency reconstruction manipulator and a combiner. The first converter is configured for converting a time portion of an audio signal into a spectral representation. The spectral domain patch generator is configured for performing a plurality of different spectral domain patching algorithms, wherein each patching algorithm generates a modified spectral representation having spectral components in an upper frequency band derived from corresponding spectral components in a core frequency band of the audio signal. The spectral domain patch generator is furthermore configured to select a first spectral domain patching algorithm from the plurality of patching algorithms for a first time portion and a second spectral domain patching algorithm from the plurality of patching algorithm for a second different time portion in accordance with the patching control signal to obtain the modified spectral representation.

摘要翻译： 使用补丁控制信号产生合成音频信号的装置具有第一转换器，频域补丁发生器，高频重建操纵器和组合器。 第一转换器被配置为将音频信号的时间部分转换为频谱表示。 频域补丁生成器被配置用于执行多个不同的频域修补算法，其中每个修补算法生成具有从音频信号的核心频带中的相应频谱分量导出的上频带中的频谱分量的修改频谱表示。 频域补丁生成器还被配置为根据来自第一时间部分的多个修补算法和来自针对第二不同时间部分的多个修补算法的第二频域修补算法来选择第一频域修补算法 修补控制信号以获得修改的光谱表示。

公开(公告)号：US08255228B2

公开(公告)日：2012-08-28

申请号：US13004225

申请日：2011-01-11

申请人： Johannes Hilpert ,  Bernhard Grill ,  Matthias Neusinger ,  Julien Robilliard ,  Maria Luis-Valero

发明人： Johannes Hilpert ,  Bernhard Grill ,  Matthias Neusinger ,  Julien Robilliard ,  Maria Luis-Valero

IPC分类号： G10L19/00

CPC分类号： G10L19/008

摘要： An efficient encoded representation of a first and a second input audio signal can be derived using correlation information indicating a correlation between the first and the second input audio signals, when a signal characterization information, indicating at least a first or a second, different characteristic of the input audio signal is additionally considered. Phase information indicating a phase relation between the first and the second input audio signals is derived, when the input audio signals have the first characteristic. The phase information and a correlation measure are included into the encoded representation when the input audio signals have the first characteristic, and only the correlation information is included into the encoded representation when the input audio signals have the second characteristic.

摘要翻译： 当指示第一和第二输入音频信号的至少第一或第二不同特征的信号表征信息时，可以使用指示第一和第二输入音频信号之间的相关性的相关信息来导出第一和第二输入音频信号的有效编码表示 另外考虑输入音频信号。 当输入音频信号具有第一特性时，导出指示第一和第二输入音频信号之间的相位关系的相位信息。 当输入音频信号具有第一特性时，相位信息和相关测量被包括在编码表示中，并且当输入音频信号具有第二特性时，相关信息仅包括在编码表示中。

公开(公告)号：US20110173005A1

公开(公告)日：2011-07-14

申请号：US13004225

申请日：2011-01-11

申请人： Johannes Hilpert ,  Bernhard Grill ,  Matthias Neusinger ,  Julien Robilliard ,  Maria Luis-Valero

发明人： Johannes Hilpert ,  Bernhard Grill ,  Matthias Neusinger ,  Julien Robilliard ,  Maria Luis-Valero

IPC分类号： G10L19/00

CPC分类号： G10L19/008

摘要： An efficient encoded representation of a first and a second input audio signal can be derived using correlation information indicating a correlation between the first and the second input audio signals, when a signal characterization information, indicating at least a first or a second, different characteristic of the input audio signal is additionally considered. Phase information indicating a phase relation between the first and the second input audio signals is derived, when the input audio signals have the first characteristic. The phase information and a correlation measure are included into the encoded representation when the input audio signals have the first characteristic, and only the correlation information is included into the encoded representation when the input audio signals have the second characteristic.

摘要翻译： 当指示第一和第二输入音频信号的至少第一或第二不同特征的信号表征信息时，可以使用指示第一和第二输入音频信号之间的相关性的相关信息来导出第一和第二输入音频信号的有效编码表示 另外考虑输入音频信号。 当输入音频信号具有第一特性时，导出指示第一和第二输入音频信号之间的相位关系的相位信息。 当输入音频信号具有第一特性时，相位信息和相关测量被包括在编码表示中，并且当输入音频信号具有第二特性时，相关信息仅包括在编码表示中。