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1. 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。

2. 发明申请

WO2010040522A3 MULTI-RESOLUTION SWITCHED AUDIO ENCODING/DECODING SCHEME 审中-公开
公开(公告)号：WO2010040522A3
公开(公告)日：2010-04-15
申请号：PCT/EP2009/007205
申请日：2009-10-07
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E. V. , VOICEAGE CORPORATION , NEUENDORF, Max , BAYER, Stefan , LECOMTE, Jérémie , FUCHS, Guillaume , ROBILLIARD, JuIien , RETTELBACH, Nikolaus , NAGEL, Frederik , GEIGER, RaIf , MULTRUS, Markus , GRILL, Bernhard , GOURNAY, Philippe , SALAMI, Redwan
发明人： NEUENDORF, Max , BAYER, Stefan , LECOMTE, Jérémie , FUCHS, Guillaume , ROBILLIARD, JuIien , RETTELBACH, Nikolaus , NAGEL, Frederik , GEIGER, RaIf , MULTRUS, Markus , GRILL, Bernhard , GOURNAY, Philippe , SALAMI, Redwan
IPC分类号： G01L19/02 , G10L19/14
摘要： An audio encoder for encoding an audio signal comprises a first coding branch (400), the first coding branch comprising a first converter (410) for converting a signal from a time domain into a frequency domain. Furthermore, the audio encoder comprises a second coding branch (500) comprising a second time/frequency converter (523). Additionally, a signal analyzer (300/525) 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 (410, 523) 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.

3. 发明申请

WO2010040522A2 MULTI-RESOLUTION SWITCHED AUDIO ENCODING/DECODING SCHEME 审中-公开
标题翻译：多分辨率切换音频编码/解码方案
公开(公告)号：WO2010040522A2
公开(公告)日：2010-04-15
申请号：PCT/EP2009007205
申请日：2009-10-07
申请人： FRAUNHOFER GES FORSCHUNG , VOICEAGE CORP , NEUENDORF MAX , BAYER STEFAN , LECOMTE JEREMIE , FUCHS GUILLAUME , ROBILLIARD JUIIEN , RETTELBACH NIKOLAUS , NAGEL FREDERIK , GEIGER RAIF , MULTRUS MARKUS , GRILL BERNHARD , GOURNAY PHILIPPE , SALAMI REDWAN
发明人： NEUENDORF MAX , BAYER STEFAN , LECOMTE JEREMIE , FUCHS GUILLAUME , ROBILLIARD JUIIEN , RETTELBACH NIKOLAUS , NAGEL FREDERIK , GEIGER RAIF , MULTRUS MARKUS , GRILL BERNHARD , GOURNAY PHILIPPE , SALAMI REDWAN
IPC分类号： G10L19/14 , G10L19/022 , G10L19/24
CPC分类号： G10L19/24 , G10L19/022
摘要： An audio encoder for encoding an audio signal comprises a first coding branch (400), the first coding branch comprising a first converter (410) for converting a signal from a time domain into a frequency domain. Furthermore, the audio encoder comprises a second coding branch (500) comprising a second time/frequency converter (523). Additionally, a signal analyzer (300/525) 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 (410, 523) 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包括第一编码分支（400），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（410）。此外，音频编码器包括包括第二时间/频率转换器（523）的第二编码分支（500）。另外，提供了用于分析音频信号的信号分析器（300/525）。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，信号分析器确定要由转换器（410,523）应用的时间/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。

4. 发明申请

WO2010003617A1 LOW BITRATE AUDIO ENCODING/DECODING SCHEME WITH COMMON PREPROCESSING 审中-公开
标题翻译：低分辨率音频编码/解码方案与通用预处理
公开(公告)号：WO2010003617A1
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004873
申请日：2009-07-06
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , GRILL, Bernhard , BAYER, Stefan , FUCHS, Guillaume , GEYERSBERGER, Stefan , GEIGER, Ralf , HILPERT, Johannes , KRAEMER, Ulrich , LECOMTE, Jeremie , MULTRUS, Markus , NEUENDORF, Max , POPP, Harald , RETTELBACH, Nikolaus , NAGEL, Frederik , DISCH, Sascha , HERRE, Juergen , YOKOTANI, Yoshikazu , WABNIK, Stefan , SCHULLER, Gerald , HIRSCHFELD, Jens
发明人： GRILL, Bernhard , BAYER, Stefan , FUCHS, Guillaume , GEYERSBERGER, Stefan , GEIGER, Ralf , HILPERT, Johannes , KRAEMER, Ulrich , LECOMTE, Jeremie , MULTRUS, Markus , NEUENDORF, Max , POPP, Harald , RETTELBACH, Nikolaus , NAGEL, Frederik , DISCH, Sascha , HERRE, Juergen , YOKOTANI, Yoshikazu , WABNIK, Stefan , SCHULLER, Gerald , HIRSCHFELD, Jens
IPC分类号： G10L19/14
CPC分类号： G10L19/173 , G10L19/0017 , G10L19/008 , G10L19/0212 , G10L19/18 , G10L2019/0008
摘要： An audio encoder comprises a common preprocessing stage (100), an information sink based encoding branch (400) such as spectral domain encoding branch, a information source based encoding branch (500) such as an LPC-domain encoding branch and a switch (200) for switching between these branches at inputs into these branches or outputs of these branches controlled by a decision stage (300). An audio decoder comprises a spectral domain decoding branch, an LPC- domain decoding branch, one or more switches for switching between the branches and a common post-processing stage for post-processing a time-domain audio signal for obtaining a post-processed audio signal.
摘要翻译：音频编码器包括公共预处理级（100），诸如频域编码分支的基于信息集合的编码分支（400），诸如LPC域编码分支的信息源编码分支（500）和开关（200 ），用于在由决策阶段（300）控制的这些分支的这些分支或输出的输入处在这些分支之间切换。音频解码器包括频域解码分支，LPC域解码分支，用于在分支之间切换的一个或多个开关和用于后处理时域音频信号以用于获得后处理音频的公共后处理级信号。

5. 发明申请

WO2010003574A1 METHOD FOR ENCODING A SYMBOL, METHOD FOR DECODING A SYMBOL, METHOD FOR TRANSMITTING A SYMBOL FROM A TRANSMITTER TO A RECEIVER, ENCODER, DECODER AND SYSTEM FOR TRANSMITTING A SYMBOL FROM A TRANSMITTER TO A RECEIVER 审中-公开
标题翻译：用于编码符号的方法，用于解码符号的方法，用于将符号从发送器发送到接收器的方法，编码器，解码器和用于将符号从发送器发送到接收器的系统
公开(公告)号：WO2010003574A1
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004718
申请日：2009-06-30
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , MULTRUS, Markus , RETTELBACH, Nikolaus , BAYER, Stefan , GRILL, Bernhard , JANDER, Manuel
发明人： MULTRUS, Markus , RETTELBACH, Nikolaus , BAYER, Stefan , GRILL, Bernhard , JANDER, Manuel
IPC分类号： H03M7/30
CPC分类号： H03M7/3088
摘要： In a method for encoding a symbol it is determined whether the symbol can be encoded by a codeword of a first code- book. In case this is true, the appropriate codeword for the symbol is selected from the first codebook. Otherwise, a codeword is selected from the first codebook indicating that the symbol cannot be encoded by a codeword of the first codebook and the symbol is split into a plurality of first sub-symbols and for at least one of the first sub- symbols a codeword is selected from a second codebook. Also a corresponding method for decoding is described.
摘要翻译：在对符号进行编码的方法中，确定符号是否可以由第一码本的码字编码。在这是真的情况下，从第一码本中选择符号的适当码字。否则，从第一码本中选择代码字，指示该符号不能由第一码本的码字编码，并且符号被分成多个第一子符号，并且对于第一子符号中的至少一个，码字从第二码本中选出。还描述了相应的解码方法。

6. 发明申请

WO2009112141A8 DEVICE AND METHOD FOR MANIPULATING AN AUDIO SIGNAL HAVING A TRANSIENT EVENT 审中-公开
标题翻译：用于处理具有瞬时事件的音频信号的装置和方法
公开(公告)号：WO2009112141A8
公开(公告)日：2014-01-09
申请号：PCT/EP2009001108
申请日：2009-02-17
申请人： FRAUNHOFER GES FORSCHUNG , DISCH SASCHA , NAGEL FREDRIK , RETTELBACH NIKOLAUS , MULTRUS MARKUS , FUCHS GUILLAUME
发明人： DISCH SASCHA , NAGEL FREDRIK , RETTELBACH NIKOLAUS , MULTRUS MARKUS , FUCHS GUILLAUME
IPC分类号： G10L21/04
CPC分类号： G10L21/04 , G10L19/025
摘要： A signal manipulator for manipulating an audio signal having a transient event may comprise a transient remover (100), a signal processor (110) and a signal inserter (120) for inserting a time portion in a processed audio signal at a signal location where the transient event was removed before processing by said transient remover, so that a manipulated audio signal comprises a transient event not influenced by the processing, whereby the vertical coherence of the transient event is maintained instead of any processing performed in the signal processor (110), which would destroy the vertical coherence of a transient.
摘要翻译：用于操纵具有瞬态事件的音频信号的信号操纵器可以包括瞬时去除器（100），信号处理器（110）和信号插入器（120），用于将处理后的音频信号中的时间部分插入信号位置，暂时事件在由所述瞬时去除器处理之前被去除，使得被操纵的音频信号包括不受处理影响的瞬时事件，由此维持瞬态事件的垂直相干性而不是在信号处理器（110）中执行的任何处理，这将破坏瞬态的垂直一致性。

7. 发明申请

WO2011048117A1 AUDIO SIGNAL ENCODER, AUDIO SIGNAL DECODER, METHOD FOR ENCODING OR DECODING AN AUDIO SIGNAL USING AN ALIASING-CANCELLATION 审中-公开
标题翻译：音频信号编码器，音频信号解码器，使用消息取消来编码或解码音频信号的方法
公开(公告)号：WO2011048117A1
公开(公告)日：2011-04-28
申请号：PCT/EP2010/065752
申请日：2010-10-19
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , VOICEAGE CORPORATION , KONINKLIJKE PHILIPS ELECTRONICS N.V. , DOLBY INTERNATIONAL AB , BESSETTE, Bruno , NEUENDORF, Max , GEIGER, Ralf , GOURNAY, Philippe , LEFEBVRE, Roch , GRILL, Bernhard , LECOMTE, Jeremie , BAYER, Stefan , RETTELBACH, Nikolaus , VILLEMOES, Lars , SALAMI, Redwan , BRINKER, Albertus C. den
发明人： BESSETTE, Bruno , NEUENDORF, Max , GEIGER, Ralf , GOURNAY, Philippe , LEFEBVRE, Roch , GRILL, Bernhard , LECOMTE, Jeremie , BAYER, Stefan , RETTELBACH, Nikolaus , VILLEMOES, Lars , SALAMI, Redwan , BRINKER, Albertus C. den
IPC分类号： G10L19/14 , G10L19/02
CPC分类号： G10L19/03 , G10L19/0212 , G10L19/20 , G10L2019/0008
摘要： An audio signal decoder (200) for providing a decoded representation (212) of an audio content on the basis of an encoded representation (310) of the audio content comprises a transform domain path (230, 240, 242, 250, 260) configured to obtain a time-domain representation (212) of a portion of the audio content encoded in a transform-domain mode on the basis of a first set (220) of spectral coefficients, a representation (224) of an aliasing-cancellation stimulus signal and a plurality of linear-prediction-domain parameters (222). The transform domain path comprises a spectrum processor (230) configured to apply a spectrum shaping to the first set of spectral coefficients in dependence on at least a subset of the linear-prediction-domain parameters, to obtain a spectrally-shaped version (232) of the first set of spectral coefficients. The transform domain path comprises a first frequency-domain-to-time-domain converter (240) configured to obtain a time-domain representation of the audio content on the basis of the spectrally-shaped version of the first set of spectral coefficients. The transform domain path comprises an aliasing-cancellation stimulus filter configured to filter (250) the aliasing-cancellation stimulus signal (324) in dependence on at least a subset of the linear-prediction-domain parameters (222), to derive an aliasing-cancellation synthesis signal (252) from the aliasing-cancellation stimulus signal. The transform domain path also comprises a combiner (260) configured to combine the time-domain representation (242) of the audio content with the aliasing-cancellation synthesis signal (252), or a post-processed version thereof, to obtain an aliasing reduced time-domain signal.
摘要翻译：用于基于音频内容的编码表示（310）提供音频内容的解码表示（212）的音频信号解码器（200）包括：配置的变换域路径（230,240,242,250,260）基于频谱系数的第一组（220）获得以变换域模式编码的音频内容的一部分的时域表示（212），混叠取消激励信号的表示（224）和多个线性预测域参数（222）。变换域路径包括频谱处理器（230），其被配置为根据线性预测域参数的至少一个子集对第一组频谱系数应用频谱整形，以获得频谱形状的版本（232）的第一组光谱系数。变换域路径包括被配置为基于第一组频谱系数的频谱形式的版本来获得音频内容的时域表示的第一频域 - 时域转换器（240）。变换域路径包括被设置为根据线性预测域参数（222）的至少一个子集过滤（250）混叠取消激励信号（324）的混叠消除刺激滤波器，以导出混叠消除刺激滤波器消除合成信号（252）。变换域路径还包括被配置为将音频内容的时域表示（242）与混叠消除合成信号（252）组合的组合器（260）或其后处理版本，以获得减少的混叠时域信号。

8. 发明申请

WO2011042464A1 MULTI-MODE AUDIO SIGNAL DECODER, MULTI-MODE AUDIO SIGNAL ENCODER, METHODS AND COMPUTER PROGRAM USING A LINEAR-PREDICTION-CODING BASED NOISE SHAPING 审中-公开
标题翻译：多模式音频信号解码器，多模式音频信号编码器，使用基于线性预测编码的噪声形状的方法和计算机程序
公开(公告)号：WO2011042464A1
公开(公告)日：2011-04-14
申请号：PCT/EP2010/064917
申请日：2010-10-06
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , NEUENDORF, Max , FUCHS, Guillaume , RETTELBACH, Nikolaus , BAECKSTROEM, Tom , LECOMTE, Jèrèmie , HERRE, Jürgen
发明人： NEUENDORF, Max , FUCHS, Guillaume , RETTELBACH, Nikolaus , BAECKSTROEM, Tom , LECOMTE, Jèrèmie , HERRE, Jürgen
IPC分类号： G10L19/02 , G10L19/14
CPC分类号： G10L19/20 , G10L19/022
摘要： A multi-mode audio signal decoder for providing a decoded representation of an audio content on the basis of an encoded representation of the audio content comprises a spectral value determinator configured to obtain sets of decoded spectral coefficients for a plurality of portions of the audio content. The audio signal decoder also comprises a spectrum processor configured to apply a spectral shaping to a set of spectral coefficients, or to a pre-processed version thereof, in dependence on a set of linear-prediction-domain parameters for a portion of the audio content encoded in a linear-prediction mode, and to apply a spectral shaping to a set of decoded spectral coefficients, or a pre-processed version thereof, in dependence on a set of scale factor parameters for a portion of the audio content encoded in a frequency-domain mode. The audio signal decoder comprises a frequency-domain-to-time-domain converter configured to obtain a time-domain representation of the audio content on the basis of a spectrally-shaped set of decoded spectral coefficients for a portion of the audio content encoded in the linear-prediction mode, and to obtain a time domain representation of the audio content on the basis of a spectrally shaped set of decoded spectral coefficients for a portion of the audio content encoded in the frequency domain mode. An audio signal encoder is also described.
摘要翻译：用于基于音频内容的编码表示提供音频内容的解码表示的多模式音频信号解码器包括：频谱值确定器，被配置为获得音频内容的多个部分的解码频谱系数集合。音频信号解码器还包括频谱处理器，其被配置为根据用于音频内容的一部分的一组线性预测域参数将频谱整形应用于一组频谱系数或其预处理版本以线性预测模式编码，并且根据用于以频率编码的音频内容的一部分的一组缩放因子参数将频谱整形应用于一组解码频谱系数或其预处理版本域名模式。音频信号解码器包括频域 - 时域转换器，其被配置为基于用于编码的音频内容的一部分的解码频谱系数的频谱形状集合来获得音频内容的时域表示线性预测模式，并且基于在频域模式中编码的音频内容的一部分的解码频谱系数的频谱整形集合来获得音频内容的时域表示。还描述了音频信号编码器。

9. 发明申请

WO2010112587A1 APPARATUS, METHOD AND COMPUTER PROGRAM FOR GENERATING A REPRESENTATION OF A BANDWIDTH-EXTENDED SIGNAL ON THE BASIS OF AN INPUT SIGNAL REPRESENTATION USING A COMBINATION OF A HARMONIC BANDWIDTH-EXTENSION AND A NON-HARMONIC BANDWIDTH-EXTENSION 审中-公开
标题翻译：使用谐波带宽扩展和非谐波带宽扩展的组合来生成基于输入信号表示的带宽扩展信号的表示的装置，方法和计算机程序
公开(公告)号：WO2010112587A1
公开(公告)日：2010-10-07
申请号：PCT/EP2010/054422
申请日：2010-04-01
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , NAGEL, Frederik , NEUENDORF, Max , RETTELBACH, Nikolaus , LECOMTE, Jérémie , MULTRUS, Markus , GRILL, Bernhard
发明人： NAGEL, Frederik , NEUENDORF, Max , RETTELBACH, Nikolaus , LECOMTE, Jérémie , MULTRUS, Markus , GRILL, Bernhard
IPC分类号： G10L21/02
CPC分类号： G10L19/008 , G10L19/18 , G10L21/038
摘要： An apparatus for generating a representation of a bandwidth-extended signal on the basis of an input signal representation comprises a phase vocoder configured to obtain values of a spectral domain representation of a first patch of the bandwidth-extended signal on the basis of the input signal representation. The apparatus also comprises a value copier configured to copy a set of values of the spectral domain representation of the first patch, which values are provided by the phase vocoder, to obtain a set of values of a spectral domain representation of a second patch, wherein the second patch is associated with higher frequencies than the first patch. The apparatus is configured to obtain the representation of the bandwidth-extended signal using the values of the spectral domain representation of the first patch and the values of the spectral domain representation of the second patch.
摘要翻译：用于基于输入信号表示产生带宽扩展信号的表示的装置包括相位声码器，被配置为基于输入信号获得带宽扩展信号的第一片段的频域表示的值表示。所述装置还包括值复制器，其被配置为复制由所述相位声码器提供的所述第一贴片的所述频谱域表示的一组值，以获得第二贴片的频域表示的一组值，其中第二贴片与比第一贴片更高的频率相关联。该装置被配置为使用第一补丁的频域表示的值和第二补丁的频域表示的值来获得带宽扩展信号的表示。

10. 发明申请

WO2010003545A1 AN APPARATUS AND A METHOD FOR DECODING AN ENCODED AUDIO SIGNAL 审中-公开
标题翻译：一种解码编码音频信号的方法和方法
公开(公告)号：WO2010003545A1
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004522
申请日：2009-06-23
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E. V. , NEUENDORF, Max , GRILL , Bernhard , KRAEMER, Ulrich , MULTRUS, Markus , POPP, Harald , RETTELBACH, Nikolaus , NAGEL , Frederik , LOHWASSER, Markus , GAYER, Marc , JANDER, Manuel , BACIGALUPO, Virgilio
发明人： NEUENDORF, Max , GRILL , Bernhard , KRAEMER, Ulrich , MULTRUS, Markus , POPP, Harald , RETTELBACH, Nikolaus , NAGEL , Frederik , LOHWASSER, Markus , GAYER, Marc , JANDER, Manuel , BACIGALUPO, Virgilio
IPC分类号： G10L19/14 , G10L21/02
CPC分类号： G10L21/038 , G10L19/008 , G10L19/0212 , G10L19/022 , G10L19/20 , G10L21/04
摘要： An apparatus for decoding (100) an encoded audio signal (102). A first decoder (110a) decodes a first portion (104a) in accordance with a first decoding algorithm for a first time portion of the encoded signal (102) to obtain a first decoded signal (114a). A second decoder (110b) decodes a second portion (104b) in accordance with a second decoding algorithm for a second time portion of the encoded signal (102) to obtain a second decoded signal (114b). A BWE module (130) has a controllable crossover frequency (fx) and is configured for performing a bandwidth extension algorithm using the first decoded signal (114a) and BWE parameters (106) for the first portion (104a), and for performing a bandwidth extension algorithm using the second decoded signal (114b) and the bandwidth extension parameters (106) for the second portion (104b). A controller (140) controls the crossover frequency (fx) for the BWE module (130) in accordance with a coding mode information (108).
摘要翻译：一种用于解码（100）编码音频信号（102）的装置。第一解码器（110a）根据用于编码信号（102）的第一时间部分的第一解码算法对第一部分（104a）进行解码，以获得第一解码信号（114a）。第二解码器（110b）根据用于编码信号（102）的第二时间部分的第二解码算法对第二部分（104b）进行解码，以获得第二解码信号（114b）。 BWE模块（130）具有可控的交叉频率（fx），并且被配置为使用第一部分（104a）的第一解码信号（114a）和BWE参数（106）来执行带宽扩展算法，并且用于执行带宽使用第二解码信号（114b）和用于第二部分（104b）的带宽扩展参数（106）的扩展算法。控制器（140）根据编码模式信息（108）来控制BWE模块（130）的交叉频率（fx）。

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