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公开(公告)号:US08275626B2
公开(公告)日:2012-09-25
申请号:US13004272
申请日:2011-01-11
申请人: Max Neuendorf , Bernhard Grill , Ulrich Kraemer , Markus Multrus , Harald Popp , Nikolaus Rettelbach , Frederik Nagel , Markus Lohwasser , Marc Gayer , Manuel Jander , Virgilio Bacigalupo
发明人: Max Neuendorf , Bernhard Grill , Ulrich Kraemer , Markus Multrus , Harald Popp , Nikolaus Rettelbach , Frederik Nagel , Markus Lohwasser , Marc Gayer , Manuel Jander , Virgilio Bacigalupo
IPC分类号: G10L19/00
CPC分类号: G10L21/038 , G10L19/008 , G10L19/0212 , G10L19/022 , G10L19/20 , G10L21/04
摘要: An apparatus for decoding an encoded audio signal having first and second portions encoded in accordance with first and second encoding algorithms, respectively, BWE parameters for the first and second portions and a coding mode information indicating a first or a second decoding algorithm, includes first and second decoders, a BWE module and a controller. The decoders decode portions in accordance with decoding algorithms for time portions of the encoded signal to obtain decoded signals. The BWE module has a controllable crossover frequency and is configured for performing a bandwidth extension algorithm using the first decoded signal and the BWE parameters for the first portion, and for performing a bandwidth extension algorithm using the second decoded signal and the bandwidth extension parameter for the second portion. The controller controls the crossover frequency for the BWE module in accordance with the coding mode information.
摘要翻译: 一种用于解码具有根据第一和第二编码算法编码的第一和第二部分的编码音频信号的装置,分别用于第一和第二部分的BWE参数和指示第一或第二解码算法的编码模式信息包括第一和第二编码算法 第二解码器,BWE模块和控制器。 解码器根据编码信号的时间部分的解码算法来解码部分,以获得解码信号。 BWE模块具有可控的交叉频率,并且被配置为使用第一解码信号和第一部分的BWE参数来执行带宽扩展算法,并且用于使用第二解码信号和带宽扩展参数来执行带宽扩展算法 第二部分。 控制器根据编码模式信息控制BWE模块的交叉频率。
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12.
公开(公告)号:US20110202352A1
公开(公告)日:2011-08-18
申请号:US13004264
申请日:2011-01-11
申请人: Max Neuendorf , Bernhard Grill , Ulrich Kraemer , Markus Multrus , Harald Popp , Nikolaus Rettelbach , Frederik Nagel , Markus Lohwasser , Marc Gayer , Manuel Jander , Virgilio Bacigalupo
发明人: Max Neuendorf , Bernhard Grill , Ulrich Kraemer , Markus Multrus , Harald Popp , Nikolaus Rettelbach , Frederik Nagel , Markus Lohwasser , Marc Gayer , Manuel Jander , Virgilio Bacigalupo
IPC分类号: G10L19/00
CPC分类号: G10L21/038 , G10L19/0208 , G10L19/025 , G10L19/20
摘要: An apparatus for generating bandwidth extension output data for an audio signal has a noise floor measurer, a signal energy characterizer and a processor. The audio signal has components in a first frequency band and components in a second frequency band, the bandwidth extension output data are adapted to control a synthesis of the components in the second frequency band. The noise floor measurer measures noise floor data of the second frequency band for a time portion of the audio signal. The signal energy characterizer derives energy distribution data, the energy distribution data characterizing an energy distribution in a spectrum of the time portion of the audio signal. The processor combines the noise floor data and the energy distribution data to obtain the bandwidth extension output data.
摘要翻译: 用于产生音频信号的带宽扩展输出数据的装置具有噪声本底测量器,信号能量表征器和处理器。 音频信号具有第一频带中的分量和第二频带中的分量,带宽扩展输出数据适于控制第二频带中的分量的合成。 噪声本底测量器测量音频信号的时间部分的第二频带的本底噪声数据。 信号能量表征器导出能量分布数据,能量分布数据表征音频信号的时间部分的频谱中的能量分布。 处理器结合噪声本底数据和能量分布数据以获得带宽扩展输出数据。
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13.
公开(公告)号:US20110202358A1
公开(公告)日:2011-08-18
申请号:US13004255
申请日:2011-01-11
申请人: Max Neuendorf , Bernhard Grill , Ulrich Kraemer , Markus Multrus , Harald Popp , Nikolaus Rettelbach , Frederik Nagel , Markus Lohwasser , Marc Gayer , Manuel Jander , Virgilio Bacigalupo
发明人: Max Neuendorf , Bernhard Grill , Ulrich Kraemer , Markus Multrus , Harald Popp , Nikolaus Rettelbach , Frederik Nagel , Markus Lohwasser , Marc Gayer , Manuel Jander , Virgilio Bacigalupo
IPC分类号: G10L21/04
CPC分类号: G10L21/038 , G10L19/0208 , G10L19/025 , G10L19/20
摘要: An apparatus calculates a number of spectral envelopes to be derived by a spectral band replication (SBR) encoder, wherein the SBR encoder is adapted to encode an audio signal using a plurality of sample values within a predetermined number of subsequent time portions in an SBR frame extending from an initial time to a final time, the predetermined number of subsequent time portions being arranged in a time sequence given by the audio signal. The apparatus has a decision value calculator for determining a decision value, the decision value measuring a deviation in spectral energy distributions of a pair of neighboring time portions. The apparatus further has a detector for detecting a violation of a threshold by the decision value and a processor for determining a first envelope border between the pair of neighboring time portions when the violation of the threshold is detected.
摘要翻译: 一种装置计算由频谱带复制(SBR)编码器导出的频谱包络的数目,其中SBR编码器适于使用SBR帧中的预定数量的后续时间部分内的多个采样值对音频信号进行编码 从初始时间延伸到最后时间,预定数量的后续时间部分以由音频信号给出的时间顺序排列。 该装置具有用于确定判定值的判定值计算器,所述判定值用于测量一对相邻时间部分的频谱能量分布的偏差。 该装置还具有用于通过判定值检测违反阈值的检测器,以及用于当检测到违反阈值时确定该对相邻时间部分之间的第一包络边界的处理器。
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14.
公开(公告)号:US08612214B2
公开(公告)日:2013-12-17
申请号:US13004264
申请日:2011-01-11
申请人: Max Neuendorf , Bernhard Grill , Ulrich Kraemer , Markus Multrus , Harald Popp , Nikolaus Rettelbach , Frederik Nagel , Markus Lohwasser , Marc Gayer , Manuel Jander , Virgilio Bacigalupo
发明人: Max Neuendorf , Bernhard Grill , Ulrich Kraemer , Markus Multrus , Harald Popp , Nikolaus Rettelbach , Frederik Nagel , Markus Lohwasser , Marc Gayer , Manuel Jander , Virgilio Bacigalupo
IPC分类号: G10L19/00
CPC分类号: G10L21/038 , G10L19/0208 , G10L19/025 , G10L19/20
摘要: An apparatus for generating bandwidth extension output data for an audio signal has a noise floor measurer, a signal energy characterizer and a processor. The audio signal has components in a first frequency band and components in a second frequency band, the bandwidth extension output data are adapted to control a synthesis of the components in the second frequency band. The noise floor measurer measures noise floor data of the second frequency band for a time portion of the audio signal. The signal energy characterizer derives energy distribution data, the energy distribution data characterizing an energy distribution in a spectrum of the time portion of the audio signal. The processor combines the noise floor data and the energy distribution data to obtain the bandwidth extension output data.
摘要翻译: 用于产生音频信号的带宽扩展输出数据的装置具有噪声本底测量器,信号能量表征器和处理器。 音频信号具有第一频带中的分量和第二频带中的分量,带宽扩展输出数据适于控制第二频带中的分量的合成。 噪声本底测量器测量音频信号的时间部分的第二频带的本底噪声数据。 信号能量表征器导出能量分布数据,能量分布数据表征音频信号的时间部分的频谱中的能量分布。 处理器结合噪声本底数据和能量分布数据以获得带宽扩展输出数据。
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15.
公开(公告)号:US08296159B2
公开(公告)日:2012-10-23
申请号:US13004255
申请日:2011-01-11
申请人: Max Neuendorf , Bernhard Grill , Ulrich Kraemer , Markus Multrus , Harald Popp , Nikolaus Rettelbach , Frederik Nagel , Markus Lohwasser , Marc Gayer , Manuel Jander , Virgilio Bacigalupo
发明人: Max Neuendorf , Bernhard Grill , Ulrich Kraemer , Markus Multrus , Harald Popp , Nikolaus Rettelbach , Frederik Nagel , Markus Lohwasser , Marc Gayer , Manuel Jander , Virgilio Bacigalupo
IPC分类号: G10L19/00
CPC分类号: G10L21/038 , G10L19/0208 , G10L19/025 , G10L19/20
摘要: An apparatus calculates a number of spectral envelopes to be derived by a spectral band replication (SBR) encoder, wherein the SBR encoder is adapted to encode an audio signal using a plurality of sample values within a predetermined number of subsequent time portions in an SBR frame extending from an initial time to a final time, the predetermined number of subsequent time portions being arranged in a time sequence given by the audio signal. The apparatus has a decision value calculator for determining a decision value, the decision value measuring a deviation in spectral energy distributions of a pair of neighboring time portions. The apparatus further has a detector for detecting a violation of a threshold by the decision value and a processor for determining a first envelope border between the pair of neighboring time portions when the violation of the threshold is detected.
摘要翻译: 一种装置计算由频谱带复制(SBR)编码器导出的频谱包络的数目,其中SBR编码器适于使用SBR帧中的预定数量的后续时间部分内的多个采样值对音频信号进行编码 从初始时间延伸到最后时间,预定数量的后续时间部分以由音频信号给出的时间顺序排列。 该装置具有用于确定判定值的判定值计算器,所述判定值用于测量一对相邻时间部分的频谱能量分布的偏差。 该装置还具有用于通过判定值检测违反阈值的检测器,以及用于当检测到违反阈值时确定该对相邻时间部分之间的第一包络边界的处理器。
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公开(公告)号:US20110202353A1
公开(公告)日:2011-08-18
申请号:US13004272
申请日:2011-01-11
申请人: Max Neuendorf , Bernhard Grill , Ulrich Kraemer , Markus Multrus , Harald Popp , Nikolaus Rettelbach , Frederick Nagel , Markus Lohwasser , Marc Gayer , Manuel Jander , Virgilio Bacigalupo
发明人: Max Neuendorf , Bernhard Grill , Ulrich Kraemer , Markus Multrus , Harald Popp , Nikolaus Rettelbach , Frederick Nagel , Markus Lohwasser , Marc Gayer , Manuel Jander , Virgilio Bacigalupo
IPC分类号: G10L19/00
CPC分类号: G10L21/038 , G10L19/008 , G10L19/0212 , G10L19/022 , G10L19/20 , G10L21/04
摘要: An apparatus for decoding an encoded audio signal having first and second portions encoded in accordance with first and second encoding algorithms, respectively, BWE parameters for the first and second portions and a coding mode information indicating a first or a second decoding algorithm, includes first and second decoders, a BWE module and a controller. The decoders decode portions in accordance with decoding algorithms for time portions of the encoded signal to obtain decoded signals. The BWE module has a controllable crossover frequency and is configured for performing a bandwidth extension algorithm using the first decoded signal and the BWE parameters for the first portion, and for performing a bandwidth extension algorithm using the second decoded signal and the bandwidth extension parameter for the second portion. The controller controls the crossover frequency for the BWE module in accordance with the coding mode information.
摘要翻译: 一种用于解码具有根据第一和第二编码算法编码的第一和第二部分的编码音频信号的装置,分别用于第一和第二部分的BWE参数和指示第一或第二解码算法的编码模式信息包括第一和第二编码算法 第二解码器,BWE模块和控制器。 解码器根据编码信号的时间部分的解码算法来解码部分,以获得解码信号。 BWE模块具有可控的交叉频率,并且被配置为使用第一解码信号和第一部分的BWE参数来执行带宽扩展算法,并且用于使用第二解码信号和带宽扩展参数来执行带宽扩展算法 第二部分。 控制器根据编码模式信息控制BWE模块的交叉频率。
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17.
公开(公告)号:US08930198B2
公开(公告)日:2015-01-06
申请号:US13004385
申请日:2011-01-11
申请人: Bernhard Grill , Roch Lefebvre , Bruno Bessette , Jimmy Lapierre , Philippe Gournay , Redwan Salami , Stefan Bayer , Guillaume Fuchs , Stefan Geyersberger , Ralf Geiger , Johannes Hilpert , Ulrich Kraemer , Jeremie Lecomte , Markus Multrus , Max Neuendorf , Harald Popp , Nikolaus Rettelbach
发明人: Bernhard Grill , Roch Lefebvre , Bruno Bessette , Jimmy Lapierre , Philippe Gournay , Redwan Salami , Stefan Bayer , Guillaume Fuchs , Stefan Geyersberger , Ralf Geiger , Johannes Hilpert , Ulrich Kraemer , Jeremie Lecomte , Markus Multrus , Max Neuendorf , Harald Popp , Nikolaus Rettelbach
IPC分类号: G10L19/00 , G10L19/18 , G10L19/16 , G10L19/008 , G10L19/02
CPC分类号: G10L19/008 , G10L19/0017 , G10L19/0212 , G10L19/173 , G10L19/18 , G10L2019/0008
摘要: An audio encoder has a first information sink oriented encoding branch, a second information source or SNR oriented encoding branch, and a switch for switching between the first encoding branch and the second encoding branch, wherein the second encoding branch has a converter into a specific domain different from the spectral domain, and wherein the second encoding branch furthermore has a specific domain coding branch, and a specific spectral domain coding branch, and an additional switch for switching between the specific domain coding branch and the specific spectral domain coding branch. An audio decoder has a first domain decoder, a second domain decoder for decoding a signal, and a third domain decoder and two cascaded switches for switching between the decoders.
摘要翻译: 音频编码器具有第一信息汇集编码分支,第二信息源或SNR定向编码分支,以及用于在第一编码分支和第二编码分支之间进行切换的开关,其中第二编码分支具有转换器到特定的域 并且其中第二编码分支还具有特定的域编码分支,以及特定频域编码分支,以及用于在特定的域编码分支与特定频域编码分支之间切换的附加开关。 音频解码器具有第一域解码器,用于对信号进行解码的第二域解码器,以及用于在解码器之间切换的第三域解码器和两个级联开关。
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公开(公告)号:US08321210B2
公开(公告)日:2012-11-27
申请号:US13007412
申请日:2011-01-14
申请人: Bernhard Grill , Stefan Bayer , Guillaume Fuchs , Stefan Geyersberger , Ralf Geiger , Johannes Hilpert , Ulrich Kraemer , Jeremie Lecomte , Markus Multrus , Max Neuendorf , Harald Popp , Nikolaus Rettelbach , Roch Lefebvre , Bruno Bessette , Jimmy Lapierre , Philippe Gournay , Redwan Salami
发明人: Bernhard Grill , Stefan Bayer , Guillaume Fuchs , Stefan Geyersberger , Ralf Geiger , Johannes Hilpert , Ulrich Kraemer , Jeremie Lecomte , Markus Multrus , Max Neuendorf , Harald Popp , Nikolaus Rettelbach , Roch Lefebvre , Bruno Bessette , Jimmy Lapierre , Philippe Gournay , Redwan Salami
CPC分类号: G10L19/173 , G10L19/0017 , G10L19/008 , G10L19/0212 , G10L19/18 , G10L2019/0008
摘要: An apparatus for encoding includes a first domain converter, a switchable bypass, a second domain converter, a first processor and a second processor to obtain an encoded audio signal having different signal portions represented by coded data in different domains, which have been coded by different coding algorithms. Corresponding decoding stages in the decoder together with a bypass for bypassing a domain converter allow the generation of a decoded audio signal with high quality and low bit rate.
摘要翻译: 一种用于编码的装置包括第一域转换器,可切换旁路,第二域转换器,第一处理器和第二处理器,以获得具有由不同域中的编码数据表示的具有不同信号部分的编码音频信号, 编码算法。 解码器中的对应的解码级和用于绕过域转换器的旁路允许生成具有高质量和低比特率的解码音频信号。
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公开(公告)号:US20110202355A1
公开(公告)日:2011-08-18
申请号:US13007412
申请日:2011-01-14
申请人: Bernhard Grill , Stefan Bayer , Guillaume Fuchs , Stefan Geyersberger , Ralf Geiger , Johannes Hilpert , Ulrich Kraemer , Jeremie Lecomte , Markus Multrus , Max Neuendorf , Harald Popp , Nikolaus Rettelbach , Roch Lefebvre , Bruno Bessette , Jimmy Lapierre , Philippe Gournay , Redwan Salami
发明人: Bernhard Grill , Stefan Bayer , Guillaume Fuchs , Stefan Geyersberger , Ralf Geiger , Johannes Hilpert , Ulrich Kraemer , Jeremie Lecomte , Markus Multrus , Max Neuendorf , Harald Popp , Nikolaus Rettelbach , Roch Lefebvre , Bruno Bessette , Jimmy Lapierre , Philippe Gournay , Redwan Salami
IPC分类号: G10L21/00
CPC分类号: G10L19/173 , G10L19/0017 , G10L19/008 , G10L19/0212 , G10L19/18 , G10L2019/0008
摘要: An apparatus for encoding includes a first domain converter, a switchable bypass, a second domain converter, a first processor and a second processor to obtain an encoded audio signal having different signal portions represented by coded data in different domains, which have been coded by different coding algorithms. Corresponding decoding stages in the decoder together with a bypass for bypassing a domain converter allow the generation of a decoded audio signal with high quality and low bit rate.
摘要翻译: 一种用于编码的装置包括第一域转换器,可切换旁路,第二域转换器,第一处理器和第二处理器,以获得具有由不同域中的编码数据表示的具有不同信号部分的编码音频信号, 编码算法。 解码器中的对应的解码级和用于绕过域转换器的旁路允许生成具有高质量和低比特率的解码音频信号。
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20.
公开(公告)号:US20110202354A1
公开(公告)日:2011-08-18
申请号:US13004385
申请日:2011-01-11
申请人: Bernhard Grill , Roch Lefebvre , Bruno Bessette , Jimmy Lapierre , Philippe Gournay , Redwan Salami , Stefan Bayer , Guillaume Fuchs , Stefan Geyersberger , Ralf Geiger , Johannes Hilpert , Ulrich Kraemer , Jeremie Lecomte , Markus Multrus , Max Neuendorf , Harald Popp , Nikolaus Rettelbach
发明人: Bernhard Grill , Roch Lefebvre , Bruno Bessette , Jimmy Lapierre , Philippe Gournay , Redwan Salami , Stefan Bayer , Guillaume Fuchs , Stefan Geyersberger , Ralf Geiger , Johannes Hilpert , Ulrich Kraemer , Jeremie Lecomte , Markus Multrus , Max Neuendorf , Harald Popp , Nikolaus Rettelbach
IPC分类号: G10L19/00
CPC分类号: G10L19/008 , G10L19/0017 , G10L19/0212 , G10L19/173 , G10L19/18 , G10L2019/0008
摘要: An audio encoder has a first information sink oriented encoding branch such as a spectral domain encoding branch, a second information source or SNR oriented encoding branch such as an LPC-domain encoding branch, and a switch for switching between the first encoding branch and the second encoding branch, wherein the second encoding branch has a converter into a specific domain different from the spectral domain such as an LPC analysis stage generating an excitation signal, and wherein the second encoding branch furthermore has a specific domain coding branch such as LPC domain processing branch, and a specific spectral domain coding branch such as LPC spectral domain processing branch, and an additional switch for switching between the specific domain coding branch and the specific spectral domain coding branch. An audio decoder has a first domain decoder such as a spectral domain decoding branch, a second domain decoder such as an LPC domain decoding branch for decoding a signal such as an excitation signal in the second domain, and a third domain decoder such as an LPC-spectral decoder branch and two cascaded switches for switching between the decoders.
摘要翻译: 音频编码器具有第一信息汇集编码分支,例如频域编码分支,第二信息源或诸如LPC域编码分支的面向SNR的编码分支,以及用于在第一编码分支和第二编码分支之间进行切换的开关 编码分支,其中所述第二编码分支具有转换器到不同于频域的特定领域,例如产生激励信号的LPC分析阶段,并且其中所述第二编码分支还具有特定的域编码分支,诸如LPC域处理分支 ,以及诸如LPC频域处理分支的特定频域编码分支,以及用于在特定编码分支和特定频域编码分支之间切换的附加开关。 音频解码器具有第一域解码器,例如频域解码分支,第二域解码器,例如LPC域解码分支,用于解码诸如第二域中的激励信号的信号,以及第三域解码器,例如LPC 光谱解码器分支和两个级联开关,用于在解码器之间切换。
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