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    Audio encoder, audio decoder, method for encoding and decoding an audio information, and computer program obtaining a context sub-region value on the basis of a norm of previously decoded spectral values
    1.
    发明授权
    Audio encoder, audio decoder, method for encoding and decoding an audio information, and computer program obtaining a context sub-region value on the basis of a norm of previously decoded spectral values 有权
    音频编码器，音频解码器，用于对音频信息进行编码和解码的方法，以及基于先前解码的频谱值的范数获得上下文子区域值的计算机程序

    公开(公告)号：US08682681B2

    公开(公告)日：2014-03-25

    申请号：US13547640

    申请日：2012-07-12

    Applicant: Guillaume Fuchs ,  Markus Multrus ,  Nikolaus Rettelbach ,  Vignesh Subbaraman ,  Oliver Weiss ,  Marc Gayer ,  Patrick Warmbold ,  Christian Griebel

    Inventor： Guillaume Fuchs ,  Markus Multrus ,  Nikolaus Rettelbach ,  Vignesh Subbaraman ,  Oliver Weiss ,  Marc Gayer ,  Patrick Warmbold ,  Christian Griebel

    IPC: G10L19/00 ,  G10L21/06

    CPC classification number: G10L19/02 ,  G10L19/0017 ,  G10L19/002

    Abstract: An audio decoder has an arithmetic decoder for providing decoded spectral values on the basis of an arithmetically-encoded representation and a frequency-domain-to-time-domain converter for providing a time-domain audio representation. The arithmetic decoder selects a mapping rule describing a mapping of a code value onto a symbol code in dependence on a context state described by a numeric current context value which is determined in dependence on previously decoded spectral values. The arithmetic decoder obtains a plurality of context subregion values on the basis of previously decoded spectral values and derives a numeric current context value associated with one or more spectral values to be decoded in dependence on stored context subregion values. The arithmetic decoder computes the norm of a vector formed by a plurality of previously decoded spectral values in order to obtain a common context subregion value. An audio encoder uses a similar concept.

    Abstract translation: 音频解码器具有算术解码器，用于基于算术编码的表示提供解码的频谱值，以及用于提供时域音频表示的频域 - 时域转换器。 算术解码器根据由根据先前解码的频谱值确定的数字当前上下文值描述的上下文状态来选择描述代码值到符号代码上的映射规则的映射规则。 算术解码器基于先前解码的频谱值获得多个上下文子区域值，并且根据存储的上下文子区域值导出与待解码的一个或多个频谱值相关联的数字当前上下文值。 算术解码器计算由多个先前解码的频谱值形成的矢量的范数，以便获得公共的上下文子区域值。 音频编码器使用类似的概念。

    Audio encoder, audio decoder, method for encoding an audio information, method for decoding an audio information and computer program using a region-dependent arithmetic coding mapping rule
    3.
    发明授权
    Audio encoder, audio decoder, method for encoding an audio information, method for decoding an audio information and computer program using a region-dependent arithmetic coding mapping rule 有权
    音频编码器，音频解码器，用于对音频信息进行编码的方法，使用区域依赖的算术编码映射规则解码音频信息的方法和计算机程序

    公开(公告)号：US08612240B2

    公开(公告)日：2013-12-17

    申请号：US13450699

    申请日：2012-04-19

    Applicant: Guillaume Fuchs ,  Vignesh Subbaraman ,  Nikolaus Rettelbach ,  Markus Multrus ,  Marc Gayer ,  Patrick Warmbold ,  Christian Griebel ,  Oliver Weiss

    Inventor： Guillaume Fuchs ,  Vignesh Subbaraman ,  Nikolaus Rettelbach ,  Markus Multrus ,  Marc Gayer ,  Patrick Warmbold ,  Christian Griebel ,  Oliver Weiss

    IPC: G10L19/032

    CPC classification number: G10L19/008 ,  G10L19/0017 ,  G10L19/0208

    Abstract: An audio decoder for providing a decoded audio information includes an arithmetic decoder for providing a plurality of decoded spectral values on the basis of an arithmetically-encoded representation of the spectral values and a frequency-domain-to-time-domain converter for providing a time-domain audio representation using decoded spectral values. The arithmetic decoder is configured to select a mapping rule describing a mapping of a code value onto a symbol code in dependence on a context state. The arithmetic decoder is configured to determine a numeric current context value describing the current context state in dependence on a plurality of previously decoded spectral values and also in dependence on whether a spectral value to be decoded is in a first predetermined frequency region or in a second predetermined frequency region. An audio encoder provides an encoded audio information on the basis of an input audio information.

    Abstract translation: 用于提供解码音频信息的音频解码器包括算术解码器，用于根据频谱值的算术编码表示提供多个解码频谱值，以及频域 - 时域转换器，用于提供时间 - 使用解码频谱值的域音频表示。 算术解码器被配置为根据上下文状态选择描述代码值到符号代码上的映射规则的映射规则。 算术解码器被配置为根据多个先前解码的频谱值来确定描述当前上下文状态的数字当前上下文值，并且还根据要解码的频谱值是否处于第一预定频率区域或者在第二预定频率区域中 预定频率区域。 音频编码器基于输入的音频信息提供经编码的音频信息。

    AUDIO ENCODER, AUDIO DECODER, METHOD FOR ENCODING AN AUDIO INFORMATION, METHOD FOR DECODING AN AUDIO INFORMATION AND COMPUTER PROGRAM USING A REGION-DEPENDENT ARITHMETIC CODING MAPPING RULE
    5.
    发明申请
    AUDIO ENCODER, AUDIO DECODER, METHOD FOR ENCODING AN AUDIO INFORMATION, METHOD FOR DECODING AN AUDIO INFORMATION AND COMPUTER PROGRAM USING A REGION-DEPENDENT ARITHMETIC CODING MAPPING RULE 有权
    音频编码器，音频解码器，用于编码音频信息的方法，使用区域依赖的算术编码映射规则来解码音频信息和计算机程序的方法

    公开(公告)号：US20120278086A1

    公开(公告)日：2012-11-01

    申请号：US13450699

    申请日：2012-04-19

    Applicant: Guillaume Fuchs ,  Vignesh Subbaraman ,  Nikolaus Rittelbach ,  Markus Multrus ,  Marc Gayer ,  Patrick Warmbold ,  Christian Griebel ,  Oliver Weiss

    Inventor： Guillaume Fuchs ,  Vignesh Subbaraman ,  Nikolaus Rittelbach ,  Markus Multrus ,  Marc Gayer ,  Patrick Warmbold ,  Christian Griebel ,  Oliver Weiss

    IPC: G10L21/00

    CPC classification number: G10L19/008 ,  G10L19/0017 ,  G10L19/0208

    Abstract: An audio decoder for providing a decoded audio information includes an arithmetic decoder for providing a plurality of decoded spectral values on the basis of an arithmetically-encoded representation of the spectral values and a frequency-domain-to-time-domain converter for providing a time-domain audio representation using decoded spectral values. The arithmetic decoder is configured to select a mapping rule describing a mapping of a code value onto a symbol code in dependence on a context state. The arithmetic decoder is configured to determine a numeric current context value describing the current context state in dependence on a plurality of previously decoded spectral values and also in dependence on whether a spectral value to be decoded is in a first predetermined frequency region or in a second predetermined frequency region.An audio encoder provides an encoded audio information on the basis of an input audio information.

    Abstract translation: 用于提供解码音频信息的音频解码器包括算术解码器，用于根据频谱值的算术编码表示提供多个解码频谱值，以及频域 - 时域转换器，用于提供时间 - 使用解码频谱值的域音频表示。 算术解码器被配置为根据上下文状态选择描述代码值到符号代码上的映射规则的映射规则。 算术解码器被配置为根据多个先前解码的频谱值来确定描述当前上下文状态的数字当前上下文值，并且还根据要解码的频谱值是否处于第一预定频率区域或者在第二预定频率区域中 预定频率区域。 音频编码器基于输入的音频信息提供经编码的音频信息。

    AUDIO ENCODER, AUDIO DECODER, METHOD FOR ENCODING AND DECODING AN AUDIO INFORMATION, AND COMPUTER PROGRAM OBTAINING A CONTEXT SUB-REGION VALUE ON THE BASIS OF A NORM OF PREVIOUSLY DECODED SPECTRAL VALUES
    7.
    发明申请
    AUDIO ENCODER, AUDIO DECODER, METHOD FOR ENCODING AND DECODING AN AUDIO INFORMATION, AND COMPUTER PROGRAM OBTAINING A CONTEXT SUB-REGION VALUE ON THE BASIS OF A NORM OF PREVIOUSLY DECODED SPECTRAL VALUES 有权
    音频编码器，音频解码器，用于编码和解码音频信息的方法以及基于先前解码的频谱值的正态分布获取上下文分区值的计算机程序

    公开(公告)号：US20130013322A1

    公开(公告)日：2013-01-10

    申请号：US13547640

    申请日：2012-07-12

    Applicant: Guillaume Fuchs ,  Markus Multrus ,  Nikolaus Rettelbach ,  Vignesh Subbaraman ,  Oliver Weiss ,  Marc Gayer ,  Patrick Warmbold ,  Christian Griebel

    Inventor： Guillaume Fuchs ,  Markus Multrus ,  Nikolaus Rettelbach ,  Vignesh Subbaraman ,  Oliver Weiss ,  Marc Gayer ,  Patrick Warmbold ,  Christian Griebel

    IPC: G10L19/00

    CPC classification number: G10L19/02 ,  G10L19/0017 ,  G10L19/002

    Abstract: An audio decoder has an arithmetic decoder for providing decoded spectral values on the basis of an arithmetically-encoded representation and a frequency-domain-to-time-domain converter for providing a time-domain audio representation. The arithmetic decoder selects a mapping rule describing a mapping of a code value onto a symbol code in dependence on a context state described by a numeric current context value which is determined in dependence on previously decoded spectral values. The arithmetic decoder obtains a plurality of context subregion values on the basis of previously decoded spectral values and derives a numeric current context value associated with one or more spectral values to be decoded in dependence on stored context subregion values. The arithmetic decoder computes the norm of a vector formed by a plurality of previously decoded spectral values in order to obtain a common context subregion value. An audio encoder uses a similar concept.

    Abstract translation: 音频解码器具有算术解码器，用于基于算术编码的表示提供解码的频谱值，以及用于提供时域音频表示的频域 - 时域转换器。 算术解码器根据由根据先前解码的频谱值确定的数字当前上下文值描述的上下文状态来选择描述代码值到符号代码上的映射规则的映射规则。 算术解码器基于先前解码的频谱值获得多个上下文子区域值，并且根据存储的上下文子区域值导出与待解码的一个或多个频谱值相关联的数字当前上下文值。 算术解码器计算由多个先前解码的频谱值形成的矢量的范数，以便获得公共的上下文子区域值。 音频编码器使用类似的概念。

    Bandwidth Extension Encoder, Bandwidth Extension Decoder and Phase Vocoder
    8.
    发明申请
    Bandwidth Extension Encoder, Bandwidth Extension Decoder and Phase Vocoder 有权
    带宽扩展编码器，带宽扩展解码器和相位声码器

    公开(公告)号：US20120158409A1

    公开(公告)日：2012-06-21

    申请号：US13335096

    申请日：2011-12-22

    Applicant: Frederik Nagel ,  Markus Multrus ,  Sascha Disch ,  Jeremie Lecomte ,  Christian Ertel ,  Patrick Warmbold

    Inventor： Frederik Nagel ,  Markus Multrus ,  Sascha Disch ,  Jeremie Lecomte ,  Christian Ertel ,  Patrick Warmbold

    IPC: G10L19/00

    CPC classification number: G10L21/038 ,  G10L19/0208 ,  G10L19/022 ,  G10L19/20 ,  G10L19/24 ,  G10L21/04

    Abstract: A bandwidth extension encoder for encoding an audio signal has a signal analyzer, a core encoder and a parameter calculator. The audio signal has a low frequency signal having a core frequency band and a high frequency signal having an upper frequency band. The signal analyzer is configured for analyzing the audio signal, the audio signal having a block of audio samples, the block having a specified length in time. The signal analyzer is furthermore configured for determining from a plurality of analysis windows an analysis window to be used for performing a bandwidth extension in a bandwidth extension decoder. The core encoder is configured for encoding the low frequency signal to acquire an encoded or frequency signal. The parameter calculator is configured for calculating bandwidth extension parameters from the high frequency signal.

    Abstract translation: 用于编码音频信号的带宽扩展编码器具有信号分析器，核心编码器和参数计算器。 音频信号具有具有核心频带的低频信号和具有较高频带的高频信号。 信号分析器被配置用于分析音频信号，音频信号具有音频样本块，该块具有指定的时间长度。 信号分析器还被配置用于从多个分析窗口确定要用于在带宽扩展解码器中执行带宽扩展的分析窗口。 核心编码器被配置为对低频信号进行编码以获取编码或频率信号。 参数计算器用于从高频信号计算带宽扩展参数。

    Audio encoder, audio decoder, method for encoding an audio information, method for decoding an audio information and computer program using an iterative interval size reduction
    9.
    发明授权
    Audio encoder, audio decoder, method for encoding an audio information, method for decoding an audio information and computer program using an iterative interval size reduction 有权
    音频编码器，音频解码器，用于对音频信息进行编码的方法，用于使用迭代间隔尺寸减小来解码音频信息的方法和计算机程序

    公开(公告)号：US08655669B2

    公开(公告)日：2014-02-18

    申请号：US13450713

    申请日：2012-04-19

    Applicant: Guillaume Fuchs ,  Vignesh Subbaraman ,  Nikolaus Rettelbach ,  Markus Multrus ,  Marc Gayer ,  Patrick Warmbold ,  Christian Griebel ,  Oliver Weiss

    Inventor： Guillaume Fuchs ,  Vignesh Subbaraman ,  Nikolaus Rettelbach ,  Markus Multrus ,  Marc Gayer ,  Patrick Warmbold ,  Christian Griebel ,  Oliver Weiss

    IPC: G10L19/00

    CPC classification number: G10L19/008 ,  G10L19/0017 ,  G10L19/0208

    Abstract: An audio decoder has an arithmetic decoder for providing decoded spectral values on the basis of an arithmetically-encoded representation and a frequency-domain-to-time-domain converter for providing a time-domain audio representation. The arithmetic decoder selects a mapping rule describing a mapping of a code value onto a symbol code in dependence on a numeric current context value describing a current context state. The arithmetic decoder determines the numeric current context value in dependence on a plurality of previously decoded spectral values. The arithmetic decoder evaluates at least one table using an iterative interval size reduction to determine whether the numeric current context value is identical to a table context value described by an entry of the table or lies within an interval described by entries of the table, and derives a mapping rule index value describing a selected mapping table.An audio encoder also uses an iterative interval table size reduction.

    Abstract translation: 音频解码器具有算术解码器，用于基于算术编码的表示提供解码的频谱值，以及用于提供时域音频表示的频域 - 时域转换器。 算术解码器根据描述当前上下文状态的数字当前上下文值选择描述代码值到符号代码上的映射规则的映射规则。 算术解码器根据多个先前解码的频谱值来确定数字电流上下文值。 算术解码器使用迭代间隔大小缩小来评估至少一个表，以确定数字当前上下文值是否与由表的条目描述的表上下文值相同或位于由表的条目描述的间隔内，并且导出 描述所选择的映射表的映射规则索引值。 音频编码器还使用迭代间隔表尺寸缩小。

    Bandwidth extension encoder for encoding an audio signal using a window controller
    10.
    发明授权
    Bandwidth extension encoder for encoding an audio signal using a window controller 有权
    带宽扩展编码器，用于使用窗口控制器对音频信号进行编码

    公开(公告)号：US08606586B2

    公开(公告)日：2013-12-10

    申请号：US13335096

    申请日：2011-12-22

    Applicant: Frederik Nagel ,  Markus Multrus ,  Sascha Disch ,  Jeremie Lecomte ,  Christian Ertel ,  Patrick Warmbold

    Inventor： Frederik Nagel ,  Markus Multrus ,  Sascha Disch ,  Jeremie Lecomte ,  Christian Ertel ,  Patrick Warmbold

    IPC: G10L19/02 ,  G10L19/00

    CPC classification number: G10L21/038 ,  G10L19/0208 ,  G10L19/022 ,  G10L19/20 ,  G10L19/24 ,  G10L21/04

    Abstract: A bandwidth extension encoder for encoding an audio signal has a signal analyzer, a core encoder, a parameter calculator, and a window controller. The audio signal has a low frequency signal having a core frequency band and a high frequency signal having an upper frequency band. The signal analyzer is configured for analyzing the audio signal, the audio signal having a block of audio samples, the block having a specified length in time. The signal analyzer is furthermore configured for determining from a plurality of analysis windows an analysis window to be used for performing a bandwidth extension in a bandwidth extension decoder. The core encoder is configured for encoding the low frequency signal to acquire an encoded or frequency signal. The parameter calculator is configured for calculating bandwidth extension parameters from the high frequency signal. The window controller is configured to provide control information indicating analysis window functions.

    Abstract translation: 用于编码音频信号的带宽扩展编码器具有信号分析器，核心编码器，参数计算器和窗口控制器。 音频信号具有具有核心频带的低频信号和具有较高频带的高频信号。 信号分析器被配置用于分析音频信号，音频信号具有音频样本块，该块具有指定的时间长度。 信号分析器还被配置用于从多个分析窗口确定要用于在带宽扩展解码器中执行带宽扩展的分析窗口。 核心编码器被配置为对低频信号进行编码以获取编码或频率信号。 参数计算器用于从高频信号计算带宽扩展参数。 窗口控制器被配置为提供指示分析窗口功能的控制信息。

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