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1. 发明申请

WO2010003532A1 APPARATUS AND METHOD FOR ENCODING/DECODING AN AUDIO SIGNAL USING AN ALIASING SWITCH SCHEME 审中-公开
标题翻译：使用切换方案编码/解码音频信号的装置和方法
公开(公告)号：WO2010003532A1
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004374
申请日：2009-06-17
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FUCHS, Guillaume , LECOMTE, Jérémie , BAYER, Stefan , GEIGER, Ralf , MULTRUS, Markus , SCHULLER, Gerald , HIRSCHFELD, Jens
发明人： FUCHS, Guillaume , LECOMTE, Jérémie , BAYER, Stefan , GEIGER, Ralf , MULTRUS, Markus , SCHULLER, Gerald , HIRSCHFELD, Jens
IPC分类号： G10L19/02 , G10L19/04 , G10L19/14
CPC分类号： G10L19/20 , G10L19/02 , G10L19/022 , G10L19/04
摘要： An apparatus for encoding an audio signal comprises the windower (11) for windowing a first block of the audio signal using an analysis window having an aliasing portion and a further portion. The apparatus furthermore comprises a processor (12) for processing the first sub-block of the audio signal associated with the aliasing portion by transforming the sub-block from a domain into a different domain subsequent to windowing the first sub-block to obtain the processed first sub-block, and for processing a second sub-block of the audio signal associated with the further portion by transforming the second sub-block from the domain into the different domain before windowing the second sub-block to obtain a processed second sub-block. The apparatus furthermore comprises a transformer (13) for converting the processed first sub-block and the processed second sub-block from the different domain into a further different domain using the same block transform rule to obtain a converted first block which may then be compressed using any of the well-known data compression algorithms. Thus, a critically sampled switch between two coding modes can be obtained, since aliasing portions occurring in two different domains are matched to each other.
摘要翻译：用于编码音频信号的装置包括用于使用具有混叠部分和另一部分的分析窗口对音频信号的第一块进行加窗的加窗器（11）。所述装置还包括处理器（12），用于通过将所述子块从一个域变换成不同的域来处理与所述混叠部分相关联的所述音频信号的所述第一子块，所述第一子块在所述第一子块的加窗之后获得所述处理并且用于通过在开启第二子块之前将第二子块从该域变换为不同的域来处理与另一部分相关联的音频信号的第二子块，以获得处理的第二子块，块。该装置还包括用于使用相同的块变换规则将处理的第一子块和处理的第二子块从不同域转换成另一不同域的变压器（13），以获得可以被压缩的转换后的第一块使用任何众所周知的数据压缩算法。因此，由于发生在两个不同域中的混叠部分彼此匹配，所以可以获得两种编码模式之间的批量采样切换。

2. 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。

3. 发明申请

WO2010115845A1 APPARATUS AND METHOD FOR GENERATING A SYNTHESIS AUDIO SIGNAL AND FOR ENCODING AN AUDIO SIGNAL 审中-公开
标题翻译：用于产生合成音频信号和编码音频信号的装置和方法
公开(公告)号：WO2010115845A1
公开(公告)日：2010-10-14
申请号：PCT/EP2010/054434
申请日：2010-04-01
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , NAGEL, Frederik , MULTRUS, Markus , LECOMTE, Jérémie , BAYER, Stefan , FUCHS, Guillaume , HILPERT, Johannes , ROBILLIARD, Julien
发明人： NAGEL, Frederik , MULTRUS, Markus , LECOMTE, Jérémie , BAYER, Stefan , FUCHS, Guillaume , HILPERT, Johannes , ROBILLIARD, Julien
IPC分类号： G10L21/02 , G10L19/14
CPC分类号： G10L19/008 , G10L19/18 , G10L21/038
摘要： An apparatus for generating a synthesis audio signal using a patching control signal comprises a first converter, a spectral domain patch generator, a high frequency reconstruction manipulator and a combiner. The first converter is configured for converting a time portion of an audio signal into a spectral representation. The spectral domain patch generator is configured for performing a plurality of different spectral domain patching algorithms, wherein each patching algorithm generates a modified spectral representation comprising spectral components in an upper frequency band derived from corresponding spectral components in a core frequency band of the audio signal. The spectral domain patch generator is furthermore configured to select a first spectral domain patching algorithm from the plurality of patching algorithms for a first time portion and a second spectral domain patching algorithm from the plurality of patching algorithm for a second different time portion in accordance with the patching control signal to obtain the modified spectral representation. The high frequency reconstruction manipulator is configured for manipulating the modified spectral representation or a signal derived from the modified spectral representation in accordance with a spectral band replication parameter to obtain a bandwidth extended signal. Finally, the combiner is configured for combining the audio signal having spectral components in the core frequency band or a signal derived from the audio signal with the bandwidth extended signal to obtain the synthesis audio signal.
摘要翻译：使用补丁控制信号产生合成音频信号的装置包括第一转换器，频域补丁发生器，高频重构操纵器和组合器。第一转换器被配置为将音频信号的时间部分转换为频谱表示。频域补丁生成器被配置用于执行多个不同的频域修补算法，其中每个修补算法生成修改的频谱表示，该修改的频谱表示包括从音频信号的核心频带中的相应频谱分量导出的上频带中的频谱分量。频域补丁生成器还被配置为根据来自第一时间部分的多个修补算法和来自用于第二不同时间部分的多个修补算法的第二频域修补算法来选择第一频域修补算法修补控制信号以获得修改的光谱表示。高频重建操纵器被配置为根据频谱带复制参数来操纵修改的频谱表示或从修改的频谱表示导出的信号，以获得带宽扩展信号。最后，组合器被配置为将具有核心频带中的频谱分量的音频信号或从音频信号导出的信号与带宽扩展信号组合以获得合成音频信号。

4. 发明申请

WO2010003521A1 METHOD AND DISCRIMINATOR FOR CLASSIFYING DIFFERENT SEGMENTS OF A SIGNAL 审中-公开
标题翻译：用于分类信号不同部分的方法和解决方案
公开(公告)号：WO2010003521A1
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004339
申请日：2009-06-16
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FUCHS, Guillaume , BAYER, Stefan , NAGEL, Frederik , HERRE, Jürgen , RETTELBACH, Nikolaus , WABNIK, Stefan , YOKOTANI, Yoshikazu , HIRSCHFELD, Jens , LECOMTE, Jérémie
发明人： FUCHS, Guillaume , BAYER, Stefan , NAGEL, Frederik , HERRE, Jürgen , RETTELBACH, Nikolaus , WABNIK, Stefan , YOKOTANI, Yoshikazu , HIRSCHFELD, Jens , LECOMTE, Jérémie
IPC分类号： G10L11/00 , G10L19/14
CPC分类号： G10L19/20 , G10L19/22 , G10L25/00 , G10L25/51 , G10L2025/783
摘要： For classifying different segments of a signal which comprises segments of at least a first type and second type, e.g. audio and speech segments, the signal is short- term classified (150) on the basis of the at least one short-term feature extracted from the signal and a short- term classification result (152) is delivered. The signal is also long-term classified (154) on the basis of the at least one short-term feature and at least one long-term feature extracted from the signal and a long-term classification result (156) is delivered. The short-term classification result (152) and the long-term classification result (156) are combined (158) to provide an output signal (160) indicating whether a segment of the signal is of the first type or of the second type.
摘要翻译：用于对包括至少第一类型和第二类型的段的信号的不同段进行分类。音频和语音段，信号是基于从信号提取的至少一个短期特征和短期分类结果（152）的短期分类（150）。信号也是基于至少一个短期特征和从信号提取的至少一个长期特征和长期分类结果（156）的长期分类（154）。短期分类结果（152）和长期分类结果（156）被组合（158）以提供指示信号的片段是第一类型还是第二类型的输出信号（160）。

5. 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。

6. 发明申请

WO2010003582A1 AUDIO SIGNAL DECODER, TIME WARP CONTOUR DATA PROVIDER, METHOD AND COMPUTER PROGRAM 审中-公开
标题翻译：音频信号解码器，时间WARP轮廓数据提供者，方法和计算机程序
公开(公告)号：WO2010003582A1
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004757
申请日：2009-07-01
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , BAYER, Stefan , DISCH, Sascha , GEIGER, Ralf , FUCHS, Guillaume , NEUENDORF, Max , SCHULLER, Gerald , EDLER, Bernd
发明人： BAYER, Stefan , DISCH, Sascha , GEIGER, Ralf , FUCHS, Guillaume , NEUENDORF, Max , SCHULLER, Gerald , EDLER, Bernd
IPC分类号： G10L21/04 , G10L19/02
CPC分类号： G10L21/04 , G10L19/0212 , G10L19/022 , G10L19/032 , G10L19/167
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 time warp contour evolution information comprises a time warp contour calculator, a time warp contour data rescaler and a warp decoder. The time warp contour calculator is configured to generate time warp contour data repeatedly restarting from a predetermined time warp contour start value on the basis of a time warp contour evolution information describing a temporal evolution of the time warp contour. The time warp contour data rescaler is configured to rescale at least a portion of the time warp contour data such that a discontinuity at a restart is avoided, reduced or eliminated in a rescaled version of the time warp contour. The warp decoder is configured to provide the decoded audio signal representation on the basis of the encoded audio signal representation and using the rescaled version of the time warp contour.
摘要翻译：音频信号解码器，被配置为基于包括时间扭曲轮廓演变信息的编码音频信号表示来提供解码音频信号表示，包括时间扭曲轮廓计算器，时间扭曲轮廓数据重定标器和扭曲解码器。时间扭曲轮廓计算器被配置为基于描述时间扭曲轮廓的时间演变的时间扭曲轮廓演化信息，从预定的时间扭曲轮廓开始值产生重复重新起动的时间扭曲轮廓数据。时间扭曲轮廓数据重定标器被配置为重新缩放时间扭曲轮廓数据的至少一部分，使得在时间扭曲轮廓的重新缩放版本中避免，减少或消除重启时的不连续性。扭曲解码器被配置为基于编码的音频信号表示并使用时间扭曲轮廓的重新缩放版本来提供解码的音频信号表示。

7. 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。

8. 发明申请

WO2010003618A2 TIME WARP ACTIVATION SIGNAL PROVIDER, AUDIO SIGNAL ENCODER, METHOD FOR PROVIDING A TIME WARP ACTIVATION SIGNAL, METHOD FOR ENCODING AN AUDIO SIGNAL AND COMPUTER PROGRAMS 审中-公开
标题翻译：时间WARP激活信号提供商，音频信号编码器，提供时间WARP激活信号的方法，编码音频信号和计算机程序的方法
公开(公告)号：WO2010003618A2
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004874
申请日：2009-07-06
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , BAYER, Stefan , DISCH, Sascha , GEIGER, Ralf , FUCHS, Guillaume , NEUENDORF, Max , SCHULLER, Gerald , EDLER, Bernd
发明人： BAYER, Stefan , DISCH, Sascha , GEIGER, Ralf , FUCHS, Guillaume , NEUENDORF, Max , SCHULLER, Gerald , EDLER, Bernd
IPC分类号： G10L19/10 , G10L21/04
CPC分类号： G10L21/04 , G10L19/002 , G10L19/0212 , G10L19/022 , G10L19/028 , G10L19/032 , G10L19/265 , G10L21/043 , G10L25/90
摘要： An audio encoder comprises a window function controller (504), a windower (502), a time warper (506) with a final quality check functionality, a time/frequency converter (508), a TNS stage (510) or a quantizer encoder (512), the window function controller (504), the time warper (506), the TNS stage (510) or an additional noise filling analyzer (524) are controlled by signal analysis results obtained by a time warp analyzer (516) or a signal classifier (520). Furthermore, a decoder applies a noise filling operation using a manipulated noise filling estimate depending on a harmonic or speech characteristic of the audio signal.
摘要翻译：音频编码器包括窗函数控制器（504），加窗器（502），具有最终质量检查功能的时间整形器（506），时间/频率转换器（508），TNS级（510）或量化器编码器（512），窗口功能控制器（504），时间整经器（506），TNS平台（510）或附加噪声填充分析器（524）由时间扭曲分析器（516）获得的信号分析结果或信号分类器（520）。此外，解码器使用根据音频信号的谐波或语音特性的操纵噪声填充估计来应用噪声填充操作。

9. 发明申请

WO2010003583A1 AUDIO SIGNAL DECODER, AUDIO SIGNAL ENCODER, ENCODED MULTI-CHANNEL AUDIO SIGNAL REPRESENTATION, METHODS AND COMPUTER PROGRAM 审中-公开
标题翻译：音频信号解码器，音频信号编码器，编码多声道音频信号表示，方法和计算机程序
公开(公告)号：WO2010003583A1
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004758
申请日：2009-07-01
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , BAYER, Stefan , DISCH, Sascha , GEIGER, Ralf , FUCHS, Guillaume , NEUENDORF, Max , SCHULLER, Gerald , EDLER, Bernd
发明人： BAYER, Stefan , DISCH, Sascha , GEIGER, Ralf , FUCHS, Guillaume , NEUENDORF, Max , SCHULLER, Gerald , EDLER, Bernd
IPC分类号： G10L19/00 , G10L19/02 , G10L21/04
CPC分类号： G10L21/04 , G10L19/0212 , G10L19/022 , G10L19/032 , G10L19/167
摘要： An audio signal decoder for providing a decoded multichannel audio signal representation on the basis of an encoded multi-channel audio signal representation comprises a time warp decoder configured to selectively use individual audio channel specific time warp contours or a joint multi-channel time warp contour for a reconstruction of a plurality of audio channels represented by the encoded multi-channel audio signal representation. An audio signal encoder for providing an encoded representation of a multichannel audio signal comprises an encoded audio representation provider configured to selectively provide an audio representation comprising a common time warp contour information, commonly associated with a plurality of audio channels of the multi-channel audio signal, or an encoded audio representation comprising individual time warp contour information, individually associated with the different audio channels of the plurality of audio channels, in dependence on an information describing a similarity or difference between time warp contours associated with the audio channels of the plurality of audio channels.
摘要翻译：用于基于编码的多声道音频信号表示提供解码的多声道音频信号表示的音频信号解码器包括时间扭曲解码器，其被配置为选择性地使用单独的音频通道特定时间扭曲轮廓或联合多通道时间扭曲轮廓，用于由编码的多声道音频信号表示表示的多个音频通道的重构。用于提供多声道音频信号的编码表示的音频信号编码器包括被配置为选择性地提供音频表示的编码音频表示提供器，该音频表示包括通常与多声道音频信号的多个音频通道相关联的公共时间扭曲轮廓信息，或者包括单独与多个音频通道中的不同音频通道相关联的各个时间扭曲轮廓信息的编码音频表示，该信息描述与描述与多个音频通道中的音频通道相关联的时间扭曲轮廓之间的相似性或差异的信息音频通道。

10. 发明申请

WO2010003581A1 TIME WARP CONTOUR CALCULATOR, AUDIO SIGNAL ENCODER, ENCODED AUDIO SIGNAL REPRESENTATION, METHODS AND COMPUTER PROGRAM 审中-公开
标题翻译：时间WARP轮廓计算器，音频信号编码器，编码音频信号表示，方法和计算机程序
公开(公告)号：WO2010003581A1
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004756
申请日：2009-07-01
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , BAYER, Stefan , DISCH, Sascha , GEIGER, Ralf , FUCHS, Guillaume , NEUENDORF, Max , SCHULLER, Gerald , EDLER, Bernd
发明人： BAYER, Stefan , DISCH, Sascha , GEIGER, Ralf , FUCHS, Guillaume , NEUENDORF, Max , SCHULLER, Gerald , EDLER, Bernd
IPC分类号： G10L21/04 , G10L19/02
CPC分类号： G10L21/04 , G10L19/0212 , G10L19/022 , G10L19/032 , G10L19/167
摘要： A time warp contour calculator for use in an audio signal decoder for providing a decoded audio signal representation on the basis of an encoded audio signal representation is configured to receive an encoded warp ratio information, to derive a sequence of warp ratio values from the encoded warp ratio information, and to obtain warp contour node values starting from a time warp contour start value. Ratios between the time warp contour node values and the time warp contour starting value associated with a time warp contour start node are determined by the warp ratio values. The time warp contour calculator is configured to compute a time warp contour node value of a given time warp contour node, which is spaced from the time warp contour starting node by an intermediate time warp contour node on the basis of a product-formation comprising a ratio between the time warp contour node value of the intermediate time warp contour node and the time warp contour starting value and a ratio between the time warp contour node value of the given time warp contour node and the time-warp contour node value of the intermediate time warp contour node as factors.
摘要翻译：用于在音频信号解码器中使用的时间扭曲轮廓计算器用于基于经编码的音频信号表示提供解码的音频信号表示，被配置为接收经编码的经纱比率信息，以从经编码的翘曲中导出经纱比值序列比例信息，并从时间扭曲轮廓开始值开始获得翘曲轮廓节点值。时间扭曲轮廓节点值与与时间扭曲轮廓起始节点相关联的时间扭曲轮廓起始值之间的比率由翘曲比值确定。时间扭曲轮廓计算器被配置为计算给定时间扭曲轮廓节点的时间扭曲轮廓节点值，该时间扭曲轮廓节点基于产品形成，该时间扭曲轮廓节点值与时间扭曲轮廓起始节点由中间时间扭曲轮廓节点间隔开，中间时间扭曲轮廓节点的时间扭曲轮廓节点值与时间扭曲轮廓起始值之间的比值以及给定时间扭曲轮廓节点的时间扭曲轮廓节点值与中间时间扭曲轮廓节点的时间扭曲轮廓节点值之间的比值时间扭曲轮廓节点作为因素。

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