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1. 发明申请

WO2010040503A2 AUDIO DECODER, AUDIO ENCODER, METHOD FOR DECODING AN AUDIO SIGNAL, METHOD FOR ENCODING AN AUDIO SIGNAL, COMPUTER PROGRAM AND AUDIO SIGNAL 审中-公开
标题翻译：音频解码器，音频编码器，解码音频信号的方法，编码音频信号的方法，计算机程序和音频信号
公开(公告)号：WO2010040503A2
公开(公告)日：2010-04-15
申请号：PCT/EP2009/007169
申请日：2009-10-06
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ... , FUCHS, Guillaume , MULTRUS, Markus , GEIGER, Ralf , BORSUM, Arne , NAGEL, Frederik , ROBILLIARD, Julien , SUBBARAMAN, Vignesh , LECOMTE, Jérémie
发明人： FUCHS, Guillaume , MULTRUS, Markus , GEIGER, Ralf , BORSUM, Arne , NAGEL, Frederik , ROBILLIARD, Julien , SUBBARAMAN, Vignesh , LECOMTE, Jérémie
IPC分类号： G10L19/00 , G10L19/02
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 comprises 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 comprises 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：用于基于经熵编码的音频信息提供经解码音频信息的音频解码器包括经配置以取决于上下文解码经熵编码音频信息的基于上下文的熵解码器，所述上下文基于在非重置操作状态中的先前解码的音频信息。基于上下文的熵解码器被配置为根据上下文来选择映射信息，以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，其被配置为响应于编码的音频信息的辅助信息而重置用于选择映射信息到默认上下文的上下文，该默认上下文独立于先前解码的音频信息。

2. 发明申请

WO2012016839A1 AUDIO ENCODER, AUDIO DECODER, METHOD FOR ENCODING AN AUDIO INFORMATION, METHOD FOR DECODING AN AUDIO INFORMATION AND COMPUTER PROGRAM USING AN OPTIMIZED HASH TABLE 审中-公开
标题翻译：音频编码器，音频解码器，用于编码音频信息的方法，使用优化的哈希表解码音频信息和计算机程序的方法
公开(公告)号：WO2012016839A1
公开(公告)日：2012-02-09
申请号：PCT/EP2011/062478
申请日：2011-07-20
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FUCHS, Guillaume , SUBBARAMAN, Vignesh , MULTRUS, Markus , RETTELBACH, Nikolaus , HILDENBRAND, Matthias , WEISS, Oliver , TRITTHART, Arthur , WARMBOLD, Patrick
发明人： FUCHS, Guillaume , SUBBARAMAN, Vignesh , MULTRUS, Markus , RETTELBACH, Nikolaus , HILDENBRAND, Matthias , WEISS, Oliver , TRITTHART, Arthur , WARMBOLD, Patrick
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , G10L19/0017 , G10L19/02
摘要： An audio decoder for providing a decoded audio information on the basis of an encoded audio information comprises 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 the decoded spectral values, in order to obtain the decoded audio information. The arithmetic decoder is configured to select a mapping rule describing a mapping of a code value representing a spectral value, or a most significant bit-plane of a spectral value, in an encoded form, onto a symbol code representing a spectral value, or a most significant bit-plane of a spectral value, in a decoded form, in dependence on a context state described by a numeric current context value. The arithmetic decoder is configured to determine the numeric current context value in dependence on a plurality of previously decoded spectral values. The arithmetic decoder is configured to evaluate a hash table, entries of which define both significant state values amongst the numeric context values and boundaries of intervals of numeric context values, in order to select the mapping rule, wherein the hash table ari_hash_m is defined as given in Figs. 22(1), 22(2), 22(3) and 22(4). The arithmetic decoder is configured to evaluate the hash table, to determine whether the numeric current context value is identical to a table context value described by an entry of the hash table or to determine an interval described by entries of the hash table within which the numeric current context value lies, and to derive a mapping rule index value describing a selected mapping rule in dependence on a result of the evaluation.
摘要翻译：用于根据编码音频信息提供解码音频信息的音频解码器包括：算术解码器，用于在频谱值的算术编码表示的基础上提供多个解码频谱值;以及频域 - 时域转换器，用于使用解码的频谱值提供时域音频表示，以便获得解码的音频信息。算术解码器被配置为选择描述表示编码形式的表示频谱值的频谱值或频谱值的最高有效位平面的代码值到表示频谱值的符号代码的映射规则，或者根据由数字当前上下文值描述的上下文状态，解码形式的频谱值的最高有效位平面。算术解码器被配置为根据多个先前解码的频谱值来确定数字电流上下文值。算术解码器被配置为评估散列表，其条目在数值上下文值和数字上下文值的间隔的边界之间定义重要状态值，以便选择映射规则，其中散列表ari_hash_m被定义为给定在图 22（1），22（2），22（3）和22（4）。算术解码器被配置为评估散列表，以确定数字当前上下文值是否与由哈希表的条目描述的表上下文值相同或者确定由散列表的条目描述的间隔，其中数字当前上下文值在于，并且根据评估结果导出描述所选择的映射规则的映射规则索引值。

3. 发明申请

WO2011086065A1 AUDIO ENCODER, AUDIO DECODER, METHOD FOR ENCODING AND AUDIO INFORMATION, METHOD FOR DECODING AN AUDIO INFORMATION AND COMPUTER PROGRAM USING A HASH TABLE DESCRIBING BOTH SIGNIFICANT STATE VALUES AND INTERVAL BOUNDARIES 审中-公开
标题翻译：音频编码器，音频解码器，编码和音频信息的方法，用于使用描述两个重要的状态值和间隔边界的哈希表来解码音频信息和计算机程序的方法
公开(公告)号：WO2011086065A1
公开(公告)日：2011-07-21
申请号：PCT/EP2011/050272
申请日：2011-01-11
申请人： FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FUCHS, Guillaume , MULTRUS, Markus , RETTELBACH, Nikolaus , SUBBARAMAN, Vignesh , WEISS, Oliver , GAYER, Marc , WARMBOLD, Patrick , GRIEBEL, Christian
发明人： FUCHS, Guillaume , MULTRUS, Markus , RETTELBACH, Nikolaus , SUBBARAMAN, Vignesh , WEISS, Oliver , GAYER, Marc , WARMBOLD, Patrick , GRIEBEL, Christian
IPC分类号： G10L19/00
CPC分类号： G10L19/02 , G10L19/0017 , G10L19/002
摘要： An audio decoder for providing a decoded audio information on the basis of an encoded audio information comprises 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 the decoded spectral values, in order to obtain the decoded audio information. 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 described by a numeric current context value. The arithmetic decoder is configured to determine the numeric current context value in dependence on a plurality of previously decoded spectral values. The arithmetic decoder is configured to evaluate a hash table, entries of which define both significant state values amongst the numeric context values and boundaries of intervals of numeric context values, in order to select the mapping rule. A mapping rule index value is individually associated to a numeric context value being a significant state value, and a common mapping rule index value is associated to different numeric context values laying within an interval bounded by interval boundaries. An audio encoded uses a similar concept.
摘要翻译：用于根据编码的音频信息提供解码的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的频谱值;以及频域 - 时域转换器，用于使用解码的频谱值提供时域音频表示，以便获得解码的音频信息。算术解码器被配置为根据由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数字电流上下文值。算术解码器被配置为评估散列表，其条目在数字上下文值和数字上下文值的间隔的边界之间定义重要状态值，以便选择映射规则。映射规则索引值分别与作为重要状态值的数字上下文值相关联，并且公共映射规则索引值与放置在由间隔边界限定的间隔内的不同数值上下文值相关联。音频编码使用类似的概念。

4. 发明申请

WO2011086067A1 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 审中-公开
标题翻译：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：WO2011086067A1
公开(公告)日：2011-07-21
申请号：PCT/EP2011/050275
申请日：2011-01-11
申请人： FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FUCHS, Guillaume , MULTRUS, Markus , RETTELBACH, Nikolaus , SUBBARAMAN, Vignesh , WEISS, Oliver , GAYER, Marc , WARMBOLD, Patrick , GRIEBEL, Christian
发明人： FUCHS, Guillaume , MULTRUS, Markus , RETTELBACH, Nikolaus , SUBBARAMAN, Vignesh , WEISS, Oliver , GAYER, Marc , WARMBOLD, Patrick , GRIEBEL, Christian
IPC分类号： G10L19/00
CPC分类号： G10L19/02 , G10L19/0017 , G10L19/002
摘要： An audio decoder for providing a decoded audio information on the basis of an encoded audio information comprises 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 the decoded spectral values, in order to obtain the decoded audio information. 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 described by a numeric current context value. The arithmetic decoder is configured to determine the numeric current context value in dependence on a plurality of previously decoded spectral values. The arithmetic decoder is configured to obtain a plurality of context subregion values on the basis of previously decoded spectral values and to store said context subregion values. The arithmetic decoder is configured to derive a numeric current context value associated with one or more spectral values to be decoded in dependence on the stored context subregion values. The arithmetic decoder is configured to compute the norm of a vector formed by a plurality of previously decoded spectral values in order to obtain a common context subregion value associated with the plurality of previously decoded spectral values. An audio encoder uses a similar concept.
摘要翻译：一种音频解码器，用于基于经编码的音频信息提供经解码的音频信息，包括用于根据频谱值的算术编码表示提供多个解码频谱值的算术解码器，以及频域 - 时域转换器，用于使用解码的频谱值提供时域音频表示，以便获得解码的音频信息。算术解码器被配置为根据由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数字电流上下文值。算术解码器被配置为基于先前解码的频谱值获得多个上下文子区域值并存储所述上下文子区域值。算术解码器被配置为根据存储的上下文子区域值导出与要解码的一个或多个频谱值相关联的数字当前上下文值。算术解码器被配置为计算由多个先前解码的频谱值形成的矢量的范数，以便获得与多个先前解码的频谱值相关联的公共上下文子区域值。音频编码器使用类似的概念。

5. 发明申请

WO2011086066A1 AUDIO ENCODER, AUDIO DECODER, METHOD FOR ENCODING AND AUDIO INFORMATION, METHOD FOR DECODING AN AUDIO INFORMATION AND COMPUTER PROGRAM USING A MODIFICATION OF A NUMBER REPRESENTATION OF A NUMERIC PREVIOUS CONTEXT VALUE 审中-公开
标题翻译：音频编码器，音频解码器，编码和音频信息的方法，用于解码音频信息和计算机程序的方法，该方法使用数字上一个上一个上下文值的修改
公开(公告)号：WO2011086066A1
公开(公告)日：2011-07-21
申请号：PCT/EP2011/050273
申请日：2011-01-11
申请人： FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FUCHS, Guillaume , MULTRUS, Markus , RETTELBACH, Nikolaus , SUBBARAMAN, Vignesh , WEISS, Oliver , GAYER, Marc , WARMBOLD, Patrick , GRIEBEL, Christian
发明人： FUCHS, Guillaume , MULTRUS, Markus , RETTELBACH, Nikolaus , SUBBARAMAN, Vignesh , WEISS, Oliver , GAYER, Marc , WARMBOLD, Patrick , GRIEBEL, Christian
IPC分类号： G10L19/00
CPC分类号： G10L19/02 , G10L19/0017 , G10L19/002
摘要： An audio decoder for providing a decoded audio information on the basis of an encoded audio information comprises 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 the decoded spectral values, in order to obtain the decoded audio information. 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 described by a numeric current context value. The arithmetic decoder is configured to determine the numeric current context value in dependence on a plurality of previously-decoded spectral values. The arithmetic decoder is also configured to modify a number representation of a numeric previous context value, describing a context state associated with one or more previously decoded spectral values, in dependence on a context subregion value, to obtain a number representation of a numeric current context value describing a context state associated with one or more spectral values to be decoded. An audio encoder uses a similar concept.
摘要翻译：一种音频解码器，用于基于经编码的音频信息提供经解码的音频信息，包括用于根据频谱值的算术编码表示提供多个解码频谱值的算术解码器，以及频域 - 时域转换器，用于使用解码的频谱值提供时域音频表示，以便获得解码的音频信息。算术解码器被配置为根据由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确定数字电流上下文值。算术解码器还被配置为根据上下文子区域来修改数字先前上下文值的数字表示，描述与一个或多个先前解码的频谱值相关联的上下文状态，以获得数字当前上下文的数字表示描述与要解码的一个或多个频谱值相关联的上下文状态的值。音频编码器使用类似的概念。

6. 发明申请

WO2011048100A1 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 审中-公开
标题翻译：音频编码器，音频解码器，用于编码音频信息的方法，用于解码音频信息的方法和使用迭代间隔尺寸减小的计算机程序
公开(公告)号：WO2011048100A1
公开(公告)日：2011-04-28
申请号：PCT/EP2010/065727
申请日：2010-10-19
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FUCHS, Guillaume , SUBBARAMAN, Vignesh , RETTELBACH, Nikolaus , MULTRUS, Markus , GAYER, Marc , WARMBOLD, Patrick , GRIEBEL, Patrick , WEISS, Oliver
发明人： FUCHS, Guillaume , SUBBARAMAN, Vignesh , RETTELBACH, Nikolaus , MULTRUS, Markus , GAYER, Marc , WARMBOLD, Patrick , GRIEBEL, Patrick , WEISS, Oliver
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , G10L19/0017 , G10L19/0208
摘要： An audio decoder (2200) for providing a decoded audio information on the basis of an encoded audio information comprises an arithmetic decoder (2200) for providing a plurality of decoded spectral values (2224) on the basis of an arithmetically-encoded representation (2222) of the spectral coefficients. The audio decoder also comprises a frequency-domain-to-time-domain converter (2230) for providing a time-domain audio representation using the decoded spectral values (2224), in order to obtain the decoded audio information (2212). 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 numeric current context value describing a current context state. The arithmetic decoder is configured to determine the numeric current context value in dependence on a plurality of previously decoded spectral values. The arithmetic decoder is configured to evaluate 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 to derive a mapping rule index value describing a selected mapping table. An audio encoder also uses an iterative interval table size reduction.
摘要翻译：用于基于经编码的音频信息提供解码的音频信息的音频解码器（2200）包括用于基于算术编码表示（2222）提供多个解码频谱值（2224）的算术解码器（2200）的频谱系数。音频解码器还包括用于使用解码频谱值（2224）提供时域音频表示的频域 - 时域转换器（2230），以便获得解码的音频信息（2212）。算术解码器被配置为根据描述当前上下文状态的数字当前上下文值来选择描述代码值到符号代码上的映射的映射规则。算术解码器被配置为根据多个先前解码的频谱值来确定数字电流上下文值。算术解码器被配置为使用迭代间隔大小减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之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。

7. 发明申请

WO2011048099A1 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 审中-公开
标题翻译：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：WO2011048099A1
公开(公告)日：2011-04-28
申请号：PCT/EP2010/065726
申请日：2010-10-19
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FUCHS, Guillaume , SUBBARAMAN, Vignesh , RETTELBACH, Nikolaus , MULTRUS, Markus , GAYER, Marc , WARMBOLD, Patrick , GRIEBEL, Christian , WEISS, Oliver
发明人： FUCHS, Guillaume , SUBBARAMAN, Vignesh , RETTELBACH, Nikolaus , MULTRUS, Markus , GAYER, Marc , WARMBOLD, Patrick , GRIEBEL, Christian , WEISS, Oliver
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , G10L19/0017 , G10L19/0208
摘要： An audio decoder (2200) for providing a decoded audio information (2212) on the basis of an encoded audio information (2210) comprises an arithmetic decoder (2220) for providing a plurality of decoded spectral values (2224) on the basis of an arithmetically-encoded representation (2222) of the spectral values and a frequency-domain-to-time-domain converter (2230) for providing a time-domain audio representation using decoded spectral values (2224), in order to obtain the decoded audio information. 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.
摘要翻译：一种用于基于编码音频信息（2210）提供解码音频信息（2212）的音频解码器（2200）包括用于基于算术提供多个解码频谱值（2224）的算术解码器（2220）（2222）和用于使用解码频谱值（2224）提供时域音频表示的频域 - 时域转换器（2230），以便获得解码的音频信息。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音频信息提供经编码的音频信息。

8. 发明申请

WO2011048098A1 AUDIO ENCODER, AUDIO DECODER, METHOD FOR ENCODING AN AUDIO INFORMATION, METHOD FOR DECODING AN AUDIO INFORMATION AND COMPUTER PROGRAM USING A DETECTION OF A GROUP OF PREVIOUSLY-DECODED SPECTRAL VALUES 审中-公开
标题翻译：音频编码器，音频解码器，用于编码音频信息的方法，用于解码音频信息的方法和使用检测以前解码的光谱值的计算机程序
公开(公告)号：WO2011048098A1
公开(公告)日：2011-04-28
申请号：PCT/EP2010/065725
申请日：2010-10-19
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FUCHS, Guillaume , SUBBARAMAN, Vignesh , RETTELBACH, Nikolaus , MULTRUS, Markus , GAYER, Marc , WARMBOLD, Patrick , GRIEBEL, Christian , WEISS, Oliver
发明人： FUCHS, Guillaume , SUBBARAMAN, Vignesh , RETTELBACH, Nikolaus , MULTRUS, Markus , GAYER, Marc , WARMBOLD, Patrick , GRIEBEL, Christian , WEISS, Oliver
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , G10L19/0017 , G10L19/0208
摘要： An audio decoder (200) for providing a decoded audio information (212) on the basis of an encoded audio information (210) comprises a arithmetic decoder (230) for providing a plurality of decoded spectral values (232) on the basis of an arithmetically-encoded representation (222) of the spectral values and a frequency-domain-to-time-domain converter (260) for providing a time-domain audio representation (262) using the decoded spectral values, in order to obtain the decoded audio information. The arithmetic decoder (230) 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 or modify the current context state in dependence on a plurality of previously-decoded spectral values. The arithmetic decoder is configured to detect a group of a plurality of previously-decoded spectral values, which fulfill, individually or taken together, a predetermined condition regarding their magnitudes, and to determine the current context state in dependence on a result of the detection. An audio encoder uses similar principles.
摘要翻译：一种用于基于编码音频信息（210）提供解码音频信息（212）的音频解码器（200）包括用于基于算术提供多个解码频谱值（232）的算术解码器（230） - 编码表示（222）和用于使用解码的频谱值提供时域音频表示（262）的频域 - 时域转换器（260），以便获得解码的音频信息。算术解码器（230）被配置为根据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。算术解码器被配置为根据多个先前解码的频谱值来确定或修改当前上下文状态。算术解码器被配置为检测多个先前解码的频谱值的一组，其单独地或一起实现关于它们的幅度的预定条件，并且根据检测结果来确定当前上下文状态。音频编码器使用类似的原理。

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