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1. 发明申请

WO2008000316A8 AUDIO ENCODER, AUDIO DECODER AND AUDIO PROCESSOR HAVING A DYNAMICALLY VARIABLE HARPING CHARACTERISTIC 审中-公开
标题翻译：音频编码器，音频解码器和具有动态变化特征的音频处理器
公开(公告)号：WO2008000316A8
公开(公告)日：2009-02-26
申请号：PCT/EP2007004401
申请日：2007-05-16
申请人： FRAUNHOFER GES FORSCHUNG , HERRE JUERGEN , GRILL BERNHARD , MULTRUS MARKUS , BAYER STEFAN , KRAEMER ULRICH , HIRSCHFELD JENS , WABNIK STEFAN , SCHULLER GERALD
发明人： HERRE JUERGEN , GRILL BERNHARD , MULTRUS MARKUS , BAYER STEFAN , KRAEMER ULRICH , HIRSCHFELD JENS , WABNIK STEFAN , SCHULLER GERALD
IPC分类号： G10L19/00 , G10L19/20
CPC分类号： G10L19/20 , G10L19/265
摘要： An audio encoder, an audio decoder or an audio processor includes a filter (12) for generating a filtered audio signal, the filter having a variable warping characteristic, the characteristic being controllable in response to a time-varying control signal (16), the control signal indicating a small or no warping characteristic or a comparatively high warping characteristic. Furthermore, a controller (18) is connected for providing the time-varying control signal, which depends on the audio signal. The filtered audio signal can be introduced to an encoding processor (22) having different encoding algorithms, one of which is a coding algorithm adapted to a specific signal pattern. Alternatively, the filter is a post-filter receiving a decoded audio signal.
摘要翻译：音频编码器，音频解码器或音频处理器包括用于产生经滤波的音频信号的滤波器（12），滤波器具有可变翘曲特性，该特性可响应于时变控制信号（16）而被控制，指示变形特性小或不翘曲特性的控制信号。此外，控制器（18）被连接用于提供取决于音频信号的时变控制信号。滤波后的音频信号可以被引入具有不同编码算法的编码处理器（22），其中之一是适用于特定信号模式的编码算法。或者，滤波器是接收经解码的音频信号的后置滤波器。

2. 发明申请

WO2009121499A8 AUDIO TRANSFORM CODING USING PITCH CORRECTION 审中-公开
标题翻译：使用倾斜校正进行音频变换编码
公开(公告)号：WO2009121499A8
公开(公告)日：2010-02-25
申请号：PCT/EP2009002118
申请日：2009-03-23
申请人： FRAUNHOFER GES FORSCHUNG , EDLER BERND , DISCH SASCHA , GEIGER RALF , BAYER STEFAN , KRAEMER ULRICH , FUCHS GUILLAUME , NEUENDORF MAX , MULTRUS MARKUS , SCHULLER GERALD , POPP HARALD
发明人： EDLER BERND , DISCH SASCHA , GEIGER RALF , BAYER STEFAN , KRAEMER ULRICH , FUCHS GUILLAUME , NEUENDORF MAX , MULTRUS MARKUS , SCHULLER GERALD , POPP HARALD
IPC分类号： G10L19/02
CPC分类号： G10L19/0212 , G10L19/022
摘要： A processed representation of an audio signal having a sequence of frames is generated by sampling the audio signal within a first and a second frame of the sequence of frames, the second frame following the first frame, the sampling using information on a pitch contour of the first and the second frame to derive a first sampled representation. The audio signal is sampled within the second and the third frame, the third frame following the second frame in the sequence of frames. The sampling uses the information on the pitch contour of the second frame and information on a pitch contour of the third frame to derive a second sampled representation. A first scaling window is derived for the first sampled representation and a second scaling window is derived for the second sampled representation, the scaling windows depending on the samplings applied to derive the first sampled representations or the second sampled representation.
摘要翻译：具有帧序列的音频信号的处理表示通过对帧序列的第一帧和第二帧中的音频信号进行采样，第一帧之后的第二帧，使用关于第一帧的音调轮廓的信息的采样第一和第二帧以得出第一采样表示。音频信号在第二帧和第三帧内采样，第三帧在帧序列中的第二帧之后。采样使用关于第二帧的音调轮廓的信息和关于第三帧的音调轮廓的信息来导出第二采样表示。对于第一采样表示导出第一缩放窗口，并且针对第二采样表示导出第二缩放窗口，缩放窗口取决于应用于导出第一采样表示或第二采样表示的采样。

3. 发明申请

WO2010003546A3 AN APPARATUS AND A METHOD FOR CALCULATING A NUMBER OF SPECTRAL ENVELOPES 审中-公开
标题翻译：一种用于计算多个光谱包络的装置和方法
公开(公告)号：WO2010003546A3
公开(公告)日：2010-03-04
申请号：PCT/EP2009004523
申请日：2009-06-23
申请人： FRAUNHOFER GES FORSCHUNG , 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： G10L21/02 , G10L19/02 , G10L19/14
CPC分类号： G10L21/038 , G10L19/0208 , G10L19/025 , G10L19/20
摘要： An apparatus (100) calculates a number (102) of spectral envelopes (104) to be derived by a spectral band replication (SBR) encoder, wherein the SBR encoder is adapted to encode an audio signal (105) using a plurality of sample values within a predetermined number of subsequent time portions (110) in an SBR frame extending from an initial time (t0) to a final time (tn), the predetermined number of subsequent time portions (110) being arranged in a time sequence given by the audio signal (105). The apparatus (100) comprises a decision value calculator (120) for determining a decision value (125), the decision value (125) measuring a deviation in spectral energy distributions of a pair of neighboring time portions. The apparatus (100) further comprises a detector (130) for detecting a violation (135) of a threshold by the decision value (125) and a processor (140) for determining a first envelope border (145) between the pair of neighboring time portions when the violation (135) of the threshold is detected. The apparatus (100) further comprises a processor (150) for determining a second envelope border (155) between a different pair of neighboring time portions or at the initial time (t0) or at the final time (tn) for an envelope having the first envelope border (145) based on the violation (135) of the threshold for the other pair or based on a temporal position of the pair or the different pair in the SBR frame. The apparatus (100) further comprises a number processor (160) for establishing the number (102) of spectral envelopes (104) having the first envelope border (145) and the second envelope border (155).
摘要翻译：一种装置（100）计算由谱带复制（SBR）编码器导出的频谱包络（104）的数目（102），其中SBR编码器适于使用多个采样值对音频信号（105）进行编码在从初始时间（t0）延伸到最后时间（tn）的SBR帧中的预定数量的后续时间部分（110）中，预定数量的后续时间部分（110）按照由音频信号（105）。装置（100）包括用于确定判定值（125）的判定值计算器（120），所述判定值（125）测量一对相邻时间部分的频谱能量分布的偏差。所述设备（100）还包括检测器（130），用于通过所述判定值（125）检测阈值的违规（135）;以及处理器（140），用于确定所述一对相邻时间之间的第一包络边界（145）当检测到阈值的违规（135）时的部分。所述装置（100）还包括处理器（150），用于确定不同对相邻时间部分之间的第二信封边界（155），或者在具有所述相邻时间部分的信封的初始时间（t0）或最后时间（tn）基于另一对的阈值的违规（135）或者基于SBR帧中的对或不同对的时间位置的第一包络边界（145）。所述设备（100）还包括用于建立具有所述第一信封边界（145）和所述第二信封边界（155）的频谱包络（104）的数量（102）的数字处理器（160）。

4. 发明申请

WO2010003563A8 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：WO2010003563A8
公开(公告)日：2011-04-21
申请号：PCT/EP2009004651
申请日：2009-06-26
申请人： FRAUNHOFER GES FORSCHUNG , VOICEAGE CORP , LECOMTE JEREMIE , GOURNAY PHILIPPE , BAYER STEFAN , MULTRUS MARKUS , BESSETTE BRUNO , GRILL BERNHARD
发明人： LECOMTE JEREMIE , 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。

5. 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。

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

WO2010040503A3 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，用于解码音频信号的方法，用于编码音频信号的方法，计算机程序和音频信号
公开(公告)号：WO2010040503A3
公开(公告)日：2010-09-10
申请号：PCT/EP2009007169
申请日：2009-10-06
申请人： FRAUNHOFER GES FORSCHUNG , FUCHS GUILLAUME , MULTRUS MARKUS , GEIGER RALF , BORSUM ARNE , NAGEL FREDERIK , ROBILLIARD JULIEN , SUBBARAMAN VIGNESH , LECOMTE JEREMIE
发明人： FUCHS GUILLAUME , MULTRUS MARKUS , GEIGER RALF , BORSUM ARNE , NAGEL FREDERIK , ROBILLIARD JULIEN , SUBBARAMAN VIGNESH , LECOMTE JEREMIE
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：一种用于基于熵编码的音频信息提供经解码的音频信息的音频解码器，包括：基于上下文的熵解码器，其被配置为根据上下文来解码熵编码的音频信息，该上下文基于先前解码的音频信息处于非复位操作状态。基于上下文的熵解码器被配置为选择映射信息，用于根据上下文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，被配置为响应于所编码的音频信息的辅助信息，重置上下文以选择映射信息到默认上下文，该缺省上下文独立于先前解码的音频信息。

8. 发明申请

WO2009109373A3 APPARATUS FOR MIXING A PLURALITY OF INPUT DATA STREAMS 审中-公开
标题翻译：混合输入数据流的大量设备
公开(公告)号：WO2009109373A3
公开(公告)日：2010-03-04
申请号：PCT/EP2009001533
申请日：2009-03-04
申请人： FRAUNHOFER GES FORSCHUNG , SCHNELL MARKUS , LUTZKY MANFRED , MULTRUS MARKUS
发明人： SCHNELL MARKUS , LUTZKY MANFRED , MULTRUS MARKUS
IPC分类号： G10L19/14 , G10L19/08
CPC分类号： G10L21/038 , G10L19/008 , G10L19/265
摘要： An apparatus (500) according to an embodiment of the present invention for mixing a first frame (540-1) of a first input data stream (510-1) and a second frame (540-2) of a second input data stream (510-2) comprises a processing unit (520) adapted to generate an output frame (550), wherein the output frame (550) comprises output spectral data describing a lower part of an output spectrum up to an output cross-over frequency, and wherein the output frame further comprises output SBR-data describing a higher part of the output spectrum above the output cross-over frequency by way of energy-related values in an output time/frequency grid resolution. The processing unit (520) is further adapted such that the output spectral data corresponding to frequencies below a minimum value of cross-over frequencies of the first frame, the second frame and the output cross-over frequency is generated in a spectral domain and the output SBR-data corresponding to frequencies above a maximum value of cross-over frequencies of the first and second frames and the output cross-over frequency is processed in a SBR-domain.
摘要翻译：根据本发明实施例的装置（500），用于将第一输入数据流（510-1）的第一帧（540-1）和第二输入数据流的第二帧（540-2） 510-2）包括适于产生输出帧（550）的处理单元（520），其中所述输出帧（550）包括描述直到输出交叉频率的输出频谱的较低部分的输出频谱数据，以及其中输出帧还包括通过输出时间/频率网格分辨率中的能量相关值来描述在输出交叉频率之上的输出频谱的较高部分的输出SBR数据。处理单元（520）还适于使得对应于低于第一帧，第二帧和输出交叉频率的交叉频率的最小值的频率的输出频谱数据在频域中生成，并且对应于高于第一和第二帧的交叉频率的最大值的频率的输出SBR数据和输出交叉频率在SBR域中被处理。

9. 发明申请

WO2010086373A3 AUDIO CODING 审中-公开
标题翻译：音频编码
公开(公告)号：WO2010086373A3
公开(公告)日：2010-10-07
申请号：PCT/EP2010050998
申请日：2010-01-28
申请人： FRAUNHOFER GES FORSCHUNG , GEIGER RALF , LECOMTE JEREMIE , MULTRUS MARKUS , NEUENDORF MAX , SPITZNER CHRISTIAN
发明人： GEIGER RALF , LECOMTE JEREMIE , MULTRUS MARKUS , NEUENDORF MAX , SPITZNER CHRISTIAN
IPC分类号： G10L19/02 , G10L19/14
CPC分类号： G10L19/167 , G10L19/0017 , G10L19/022 , G10L19/24
摘要： An audio decoder for providing a decoded audio information on the basis of an encoded audio information comprises a window-based signal transformer configured to map a time-frequency representation, which is described by the encoded audio information, to a time-domain representation. The window-based signal transformer is configured to select a window, out of a plurality of windows comprising windows of different transition slopes and windows of different transform length, on the basis of a window information. The audio decoder comprises a window selector configured to evaluate a variable-codewordlength window information in order to select a window for a processing of a given portion of the time-frequency representation associated with a given frame of the audio information.
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包括：基于窗口的信号变换器，被配置为将由编码的音频信息描述的时间 - 频率表示映射到时域表示。基于窗口的信号变换器被配置为基于窗口信息来选择包括不同转换斜率的窗口的多个窗口和不同变换长度的窗口中的窗口。音频解码器包括窗口选择器，其被配置为评估可变码字长度窗口信息，以便选择用于处理与音频信息的给定帧相关联的时间频率表示的给定部分的窗口。

10. 发明申请

WO2009109374A3 MIXING OF INPUT DATA STREAMS AND GENERATION OF AN OUTPUT DATA STREAM THEREFROM 审中-公开
标题翻译：输入数据流的混合和其输出数据流的生成
公开(公告)号：WO2009109374A3
公开(公告)日：2010-04-01
申请号：PCT/EP2009001534
申请日：2009-03-04
申请人： FRAUNHOFER GES FORSCHUNG , SCHNELL MARKUS , LUTZKY MANFRED , MULTRUS MARKUS
发明人： SCHNELL MARKUS , LUTZKY MANFRED , MULTRUS MARKUS
IPC分类号： G10L19/14 , G10L19/08
CPC分类号： G10L21/038 , G10L19/008 , G10L19/265
摘要： An apparatus (500) for mixing a plurality of input data streams (510) is described, wherein the input data streams (510) each comprise a frame (540) of audio data in the spectral domain, a frame (540) of an input data stream (510) comprising spectral information for a plurality of spectral components. The apparatus comprises a processing unit (520) adapted to compare the frames (540) of the plurality of input data streams (510). The processing unit (520) is further adapted to determine, based on the comparison, for a spectral component of an output frame (550) of an output data stream (530), exactly one input data stream (510) of the plurality of input data streams (510). The processing unit (520) is further adapted to generate the output data stream (530) by copying at least a part of an information of a corresponding spectral component of the frame of the determined data stream (510) to describe the spectral component of the output frame (550) of the output data stream (530). Further or alternatively, the control value of the frames (540) of the first input data stream (510-1) and the second input data stream (510-2) may be compared to yield a comparison result and, if the comparison result is positive, the output data stream (530) comprising an output frame (550) may be generated such that the output frame (550) comprises a control value equal to that of the first and second input data streams (510) and payload data derived from the payload data of the frames of the first and second input data streams by processing the audio data in the spectral domain.
摘要翻译：描述了用于混合多个输入数据流（510）的装置（500），其中输入数据流（510）各自包括频谱域中的音频数据的帧（540），输入的帧（540）数据流（510）包括用于多个频谱分量的频谱信息。该装置包括适于比较多个输入数据流（510）的帧（540）的处理单元（520）。处理单元（520）还适于基于比较确定对于输出数据流（530）的输出帧（550）的频谱分量，多个输入的恰好一个输入数据流（510）数据流（510）。处理单元（520）还适于通过复制所确定的数据流（510）的帧的对应频谱分量的信息的至少一部分来生成输出数据流（530），以描述所确定的数据流的频谱分量输出数据流（530）的输出帧（550）。进一步或替代地，可以比较第一输入数据流（510-1）和第二输入数据流（510-2）的帧（540）的控制值以产生比较结果，并且如果比较结果为可以生成包括输出帧（550）的输出数据流（530），使得输出帧（550）包括等于第一和第二输入数据流（510）的控制值和从通过处理频谱域中的音频数据来输出第一和第二输入数据流的帧的有效载荷数据。

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