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1. 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。

2. 发明申请

WO2010003564A1 LOW BITRATE AUDIO ENCODING/DECODING SCHEME HAVING CASCADED SWITCHES 审中-公开
标题翻译：低成本音频编码/解码方案具有CASCADED开关
公开(公告)号：WO2010003564A1
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004652
申请日：2009-06-26
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V , VOICEAGE CORPORATION , GRILL, Bernhard , LEFEBVRE, Roch , BESSETTE, Bruno , LAPIERRE, Jimmy , GOURNAY, Philippe , SALAMI, Redwan , BAYER, Stefan , FUCHS, Guillaume , GEYERSBERGER, Stefan , GEIGER, Ralf , HILPERT, Johannes , KRAEMER, Ulrich , LECOMTE, Jeremie , MULTRUS, Markus , NEUENDORF, Max , POPP, Harald , RETTELBACH, Nikolaus
发明人： GRILL, Bernhard , LEFEBVRE, Roch , BESSETTE, Bruno , LAPIERRE, Jimmy , GOURNAY, Philippe , SALAMI, Redwan , BAYER, Stefan , FUCHS, Guillaume , GEYERSBERGER, Stefan , GEIGER, Ralf , HILPERT, Johannes , KRAEMER, Ulrich , LECOMTE, Jeremie , MULTRUS, Markus , NEUENDORF, Max , POPP, Harald , RETTELBACH, Nikolaus
IPC分类号： G10L19/14
CPC分类号： G10L19/008 , G10L19/0017 , G10L19/0212 , G10L19/173 , G10L19/18 , G10L2019/0008
摘要： An audio encoder comprises 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 comprises 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 comprises 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 comprises 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：音频编码器包括第一信息宿定向编码分支，诸如频域编码分支，第二信息源或SNR定向编码分支，诸如LPC域编码分支，以及用于在第一编码分支与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包括转换器到不同于所述频域的特定域，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包括特定域编码分支，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。音频解码器包括诸如频域解码分支的第一域解码器，诸如LPC域解码分支的第二域解码器，用于对诸如第二域中的激励信号的信号进行解码，以及第三域解码器，诸如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。

3. 发明申请

WO2010006717A1 AUDIO ENCODING/DECODING SCHEME HAVING A SWITCHABLE BYPASS 审中-公开
标题翻译：具有可切换旁路的音频编码/解码方案
公开(公告)号：WO2010006717A1
公开(公告)日：2010-01-21
申请号：PCT/EP2009/004875
申请日：2009-07-06
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , VOICEAGE CORPORATION , GRILL, Bernhard , BAYER, Stefan , FUCHS, Guillaume , GEYERSBERGER, Stefan , GEIGER, Ralf , HILPERT, Johannes , KRAEMER, Ulrich , LECOMTE, Jeremie , MULTRUS, Markus , NEUENDORF, Max , POPP, Harald , RETTELBACH, Nikolaus , LEFEBVRE, Roch , BESSETTE, Bruno , LAPIERRE, Jimmy , SALAMI, Redwan , GOURNAY, Philippe
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 , LEFEBVRE, Roch , BESSETTE, Bruno , LAPIERRE, Jimmy , SALAMI, Redwan , GOURNAY, Philippe
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 apparatus for encoding comprises a first domain Converter (510), a switchable bypass (50), a second domain Converter (410), a first processor (420) and a second processor (520) 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（510），可切换旁路（50），第二域转换器（410），第一处理器（420）和第二处理器（520），以获得具有不同信号的编码音频信号由不同域中的编码数据表示的部分，其已经由不同的编码算法编码。解码器中的对应的解码级以及绕过域转换器的旁路允许产生具有高质量和低比特率的解码音频信号。

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

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.

6. 发明申请

WO2008151755A1 AUDIO ENCODER FOR ENCODING AN AUDIO SIGNAL HAVING AN IMPULSE- LIKE PORTION AND STATIONARY PORTION, ENCODING METHODS, DECODER, DECODING METHOD; AND ENCODED AUDIO SIGNAL 审中-公开
标题翻译：用于编码具有类似部分和静止部分的音频信号的音频编码器，编码方法，解码器，解码方法; 和编码音频信号
公开(公告)号：WO2008151755A1
公开(公告)日：2008-12-18
申请号：PCT/EP2008/004496
申请日：2008-06-05
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , HERRE, Jürgen , GEIGER, Ralf , BAYER, Stefan , FUCHS, Guillaume , KRÄMER, Ulrich , RETTELBACH, Nikolaus , GRILL, Bernhard
发明人： HERRE, Jürgen , GEIGER, Ralf , BAYER, Stefan , FUCHS, Guillaume , KRÄMER, Ulrich , RETTELBACH, Nikolaus , GRILL, Bernhard
IPC分类号： G10L19/14
CPC分类号： G10L19/20
摘要： An audio encoder for encoding an audio signal includes an impulse extractor (10) for extracting an impulse-like portion from the audio signal. This impulse-like portion is encoded and forwarded to an output interface (22). Furthermore, the audio encoder includes a signal encoder (16) which encodes a residual signal derived from the original audio signal so that the impulse-like portion is reduced or eliminated in the residual audio signal. The output interface (22) forwards both, the encoded signals, i.e., the encoded impulse signal (12) and the encoded residual signal (20) for transmission or storage. On the decoder-side, both signal portions are separately decoded and then combined to obtain a decoded audio signal.
摘要翻译：用于对音频信号进行编码的音频编码器包括用于从音频信号中提取脉冲状部分的脉冲提取器（10）。该脉冲状部分被编码并转发到输出接口（22）。此外，音频编码器包括信号编码器（16），其对从原始音频信号导出的残留信号进行编码，使得在残留音频信号中减少或消除脉冲状部分。输出接口（22）将编码的信号，即编码的脉冲信号（12）和编码的残留信号（20）两者转发以用于传输或存储。在解码器侧，两个信号部分被单独解码，然后被组合以获得解码的音频信号。

7. 发明申请

WO2010003663A1 AUDIO ENCODER AND DECODER FOR ENCODING FRAMES OF SAMPLED AUDIO SIGNALS 审中-公开
标题翻译：音频编码器和解码器用于编码采样音频信号的框架
公开(公告)号：WO2010003663A1
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004947
申请日：2009-07-08
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , VOICEAGE CORPORATION , LECOMTE, Jérémie , GOURNAY, Philippe , BAYER, Stefan , MULTRUS, Markus , RETTELBACH, Nikolaus
发明人： LECOMTE, Jérémie , GOURNAY, Philippe , BAYER, Stefan , MULTRUS, Markus , RETTELBACH, Nikolaus
IPC分类号： G10L19/14
CPC分类号： G10L19/20
摘要： An audio encoder (100) adapted for encoding frames of a sampled audio signal to obtain encoded frames, wherein a frame comprises a number of time domain audio samples, comprising a predictive coding analysis stage (110) for determining information on coefficients of a synthesis filter and information on a prediction domain frame based on a frame of audio samples. The audio encoder (100) further comprises a frequency domain transformer (120) for transforming a frame of audio samples to the frequency domain to obtain a frame spectrum and an encoding domain decider (130). Moreover, the audio encoder (100) comprises a controller (140) for determining an information on a switching coefficient when the encoding domain decider decides that encoded data of a current frame is based on the information on the coefficients and the information on the prediction domain frame when encoded data of a previous frame was encoded based on a previous frame spectrum.
摘要翻译：一种适于编码采样音频信号的帧以获得编码帧的音频编码器（100），其中一帧包括多个时域音频样本，包括用于确定关于合成滤波器的系数的信息的预测编码分析阶段（110）以及基于音频样本帧的关于预测域帧的信息。音频编码器（100）还包括频域变换器（120），用于将音频样本的帧变换到频域以获得帧频和编码域决定器（130）。此外，音频编码器（100）包括控制器（140），用于当编码域决定器基于关于系数的信息和关于预测域的信息来确定当前帧的编码数据时，确定关于切换系数的信息基于前一帧频谱对前一帧的编码数据进行编码的帧。

8. 发明申请

WO2010003563A1 AUDIO ENCODER AND DECODER FOR ENCODING AND DECODING AUDIO SAMPLES 审中-公开
标题翻译：用于编码和解码音频样本的音频编码器和解码器
公开(公告)号：WO2010003563A1
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004651
申请日：2009-06-26
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , VOICEACE CORPORATION , LECOMTE, Jérémie , GOURNAY, Philippe , BAYER, Stefan , MULTRUS, Markus , BESSETTE, Bruno , GRILL, Bernhard
发明人： LECOMTE, Jérémie , GOURNAY, Philippe , BAYER, Stefan , MULTRUS, Markus , BESSETTE, Bruno , GRILL, Bernhard
IPC分类号： G10L19/02 , G10L19/14
CPC分类号： G10L19/20 , G10L19/022
摘要： An audio encoder (100) for encoding audio samples, comprising a first time domain aliasing introducing encoder (110) for encoding audio samples in a first encoding domain, the first time domain aliasing introducing encoder (110) having a first framing rule, a start window and a stop window. The audio encoder (100) further comprises a second encoder (120) for encoding samples in a second encoding domain, the second encoder (120) having a different second framing rule. The audio encoder (100) further comprises a controller (130) switching from the first encoder (110) to the second encoder (120) in response to characteristic of the audio samples, and for modifying the second framing rule in response to switching from the first encoder (110) to the second encoder (120) or for modifying the start window or the stop window of the first encoder (110), wherein the second framing rule remains unmodified.
摘要翻译：一种用于编码音频样本的音频编码器（100），包括用于对第一编码域中的音频样本进行编码的第一时域混叠引入编码器（110），具有第一成帧规则的第一时域混叠引入编码器（110）窗口和停止窗口。音频编码器（100）还包括用于对第二编码域中的采样进行编码的第二编码器（120），第二编码器（120）具有不同的第二成帧规则。音频编码器（100）还包括响应于音频样本的特性从第一编码器（110）切换到第二编码器（120）的控制器（130），并且响应于从第二编码器第一编码器（110）到第二编码器（120）或用于修改第一编码器（110）的起始窗口或停止窗口，其中第二成帧规则保持未修改。

9. 发明申请

WO2011110594A1 AUDIO SIGNAL DECODER, AUDIO SIGNAL ENCODER, METHOD FOR DECODING AN AUDIO SIGNAL, METHOD FOR ENCODING AN AUDIO SIGNAL AND COMPUTER PROGRAM USING A PITCH-DEPENDENT ADAPTATION OF A CODING CONTEXT 审中-公开
标题翻译：音频信号解码器，音频信号编码器，用于解码音频信号的方法，用于编码音频信号的方法和使用与编码语境相关的适应性的计算机程序
公开(公告)号：WO2011110594A1
公开(公告)日：2011-09-15
申请号：PCT/EP2011/053541
申请日：2011-03-09
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , DOLBY INTERNATIONAL AB , BAYER, Stefan , BÄCKSTRÖM, Tom , GEIGER, Ralf , EDLER, Bernd , DISCH, Sascha , VILLEMOES, Lars
发明人： BAYER, Stefan , BÄCKSTRÖM, Tom , GEIGER, Ralf , EDLER, Bernd , DISCH, Sascha , VILLEMOES, Lars
IPC分类号： G10L21/04
CPC分类号： G10L19/022 , G10L19/0212 , G10L25/90
摘要： An audio signal decoder (150 for providing a decoded audio signal representation (154) on the basis of an encoded audio signal representation (152) comprising an encoded spectrum representation (ac_spectral_data[]) and an encoded time warp information (tw_data[]) comprises a context-based spectral value decoder (160) configured to decode a codeword (acod_m) describing one or more spectral values or at least a portion (m) of a number representation of one or more spectral values in dependence on a context state, to obtain decoded spectral values (162, 297, x_ac_dec[]). The audio signal decoder also comprises a context state determinator (170) configured to determine a current context state (164, c) in dependence on one or more previously decoded spectral values (162, 297). The audio signal decoder also comprises a time warping frequency-domain-to-time-domain converter (180) configured to provide a time-warped time-domain representation (182) of a given audio frame on the basis of a set of decoded spectral values (162) associated with the given audio frame and provided by the context-based spectral value decoder and in dependence on the time warp information. The context-state determinator (170) is configured to adapt the determination of the context state to a change of a fundamental frequency between subsequent audio frames. An audio signal encoder applies a comparable concept.
摘要翻译：音频信号解码器（150）用于基于包括编码频谱表示（ac_spectral_data []）和编码时间扭曲信息（tw_data []）的编码音频信号表示（152）提供解码音频信号表示（154）基于上下文的频谱值解码器（160），被配置为对描述根据上下文状态的一个或多个频谱值的数字表示的一个或多个频谱值或至少一部分（m）的码字（acod_m）进行解码，音频信号解码器还包括上下文状态确定器（170），配置为根据一个或多个先前解码的频谱值（164，c）来确定当前上下文状态（164，c）音频信号解码器还包括时间扭曲频域 - 时域转换器（180），其被配置为基于以下方式提供给定音频帧的时间扭曲时域表示（182）一套与由给定音频帧相关联并由基于上下文的频谱值解码器提供并且依赖于时间扭曲信息的解码频谱值（162）。上下文状态确定器（170）被配置为使上下文状态的确定适应于后续音频帧之间的基本频率的改变。音频信号编码器应用可比较的概念。

10. 发明申请

WO2011110591A1 AUDIO SIGNAL DECODER, AUDIO SIGNAL ENCODER, METHODS AND COMPUTER PROGRAM USING A SAMPLING RATE DEPENDENT TIME-WARP CONTOUR ENCODING 审中-公开
标题翻译：音频信号解码器，音频信号编码器，使用采样速率的方法和计算机程序依赖于时间波形编码
公开(公告)号：WO2011110591A1
公开(公告)日：2011-09-15
申请号：PCT/EP2011/053538
申请日：2011-03-09
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , DOLBY INTERNATIONAL AB , BAYER, Stefan , BÄCKSTRÖM, Tom , GEIGER, Ralf , EDLER, Bernd , DISCH, Sascha , VILLEMOES, Lars
发明人： BAYER, Stefan , BÄCKSTRÖM, Tom , GEIGER, Ralf , EDLER, Bernd , DISCH, Sascha , VILLEMOES, Lars
IPC分类号： G10L19/02
CPC分类号： G10L19/022 , G10L19/0212 , G10L25/90
摘要： An audio signal decoder configured to provide a decoded audio signal representation on the basis of an encoded audio signal representation comprising a sampling frequency information, an encoded time warp information and an encoded spectrum representation comprises a time warp calculator and a warp decoder. The time warp calculator is configured to adapt a mapping rule for mapping codewords of the encoded time warp information onto decoded time warp values describing the decoded time warp information in dependence on the sampling frequency information. The warp decoder is configured to provide the decoded audio signal representation on the basis of the encoded spectrum representation and in dependence on the decoded time warp information.
摘要翻译：音频信号解码器被配置为基于包括采样频率信息，编码时间扭曲信息和编码频谱表示的编码音频信号表示来提供解码音频信号表示，包括时间扭曲计算器和扭曲解码器。时间扭曲计算器被配置为根据编码时间扭曲信息的码字将映射规则适应于根据采样频率信息描述解码的时间扭曲信息的解码时间扭曲值。翘曲解码器被配置为基于编码的频谱表示并且依赖于解码的时间扭曲信息来提供解码的音频信号表示。

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