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21. 发明申请

WO2014202784A1 APPARATUS AND METHOD FOR IMPROVED SIGNAL FADE OUT FOR SWITCHED AUDIO CODING SYSTEMS DURING ERROR CONCEALMENT 审中-公开
标题翻译：用于改变信号的设备和方法，用于在错误保密期间切换音频编码系统
公开(公告)号：WO2014202784A1
公开(公告)日：2014-12-24
申请号：PCT/EP2014/063171
申请日：2014-06-23
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： SCHNABEL, Michael , MARKOVIC, Goran , SPERSCHNEIDER, Ralph , LECOMTE, Jérémie , HELMRICH, Christian
IPC分类号： G10L19/005 , G10L25/90 , G10L19/09
CPC分类号： G10L19/005 , G10L19/002 , G10L19/012 , G10L19/0212 , G10L19/06 , G10L19/07 , G10L19/083 , G10L19/09 , G10L19/12 , G10L19/22 , G10L2019/0002 , G10L2019/0011 , G10L2019/0016
摘要： An apparatus for decoding an audio signal is provided. The apparatus comprises a receiving interface (110), wherein the receiving interface (110) is configured to receive a first frame comprising a first audio signal portion of the audio signal, and wherein the receiving interface (110) is configured to receive a second frame comprising a second audio signal portion of the audio signal. Moreover, the apparatus comprises a noise level tracing unit (130), wherein the noise level tracing unit (130) is configured to determine noise level information depending on at least one of the first audio signal portion and the second audio signal portion, wherein the noise level information is represented in a tracing domain. Furthermore, the apparatus comprises a first reconstruction unit (140) for reconstructing, in a first reconstruction domain, a third audio signal portion of the audio signal depending on the noise level information, if a third frame of the plurality of frames is not received by the receiving interface (110) or if said third frame is received by the receiving interface (110) but is corrupted, wherein the first reconstruction domain is different from or equal to the tracing domain. Moreover, the apparatus comprises a transform unit (121) for transforming the noise level information from the tracing domain to a second reconstruction domain, if a fourth frame of the plurality of frames is not received by the receiving interface (110) or if said fourth frame is received by the receiving interface (110) but is corrupted, wherein the second reconstruction domain is different from the tracing domain, and wherein the second reconstruction domain is different from the first reconstruction domain. Furthermore, the apparatus comprises a second reconstruction unit (141) for reconstructing, in the second reconstruction domain, a fourth audio signal portion of the audio signal depending on the noise level information being represented in the second reconstruction domain, if said fourth frame of the plurality of frames is not received by the receiving interface (110) or if said fourth frame is received by the receiving interface (110) but is corrupted.
摘要翻译：提供一种用于解码音频信号的装置。所述装置包括接收接口（110），其中所述接收接口（110）被配置为接收包括所述音频信号的第一音频信号部分的第一帧，并且其中所述接收接口（110）被配置为接收第二帧包括音频信号的第二音频信号部分。此外，该装置包括噪声电平跟踪单元（130），其中噪声电平跟踪单元（130）被配置为根据第一音频信号部分和第二音频信号部分中的至少一个来确定噪声电平信息，其中，噪声电平信息在跟踪域中表示。此外，该装置包括第一重建单元（140），用于在第一重建域中根据噪声电平信息重建音频信号的第三音频信号部分，如果多个帧中的第三帧未被接收接口（110）或者如果所述第三帧被接收接口（110）接收但被破坏，其中第一重构域不同于或等于跟踪域。此外，如果多个帧的第四帧没有被接收接口（110）接收，或者如果所述第四帧被接收，则该装置包括用于将噪声级信息从跟踪域变换到第二重建域的变换单元（121）帧由接收接口（110）接收但被破坏，其中第二重构域与跟踪域不同，并且其中第二重建域与第一重建域不同。此外，该装置包括第二重构单元（141），用于在第二重建域中根据在第二重建域中表示的噪声电平信息重建音频信号的第四音频信号部分，如果所述第二重构单元多个帧不被接收接口（110）接收，或者如果所述第四帧被接收接口（110）接收但被破坏。

22. 发明申请

WO2014096280A1 COMFORT NOISE ADDITION FOR MODELING BACKGROUND NOISE AT LOW BIT-RATES 审中-公开
标题翻译：舒适的噪声添加用于建模低比特率的背景噪音
公开(公告)号：WO2014096280A1
公开(公告)日：2014-06-26
申请号：PCT/EP2013/077527
申请日：2013-12-19
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： FUCHS, Guillaume , LOMBARD, Anthony , RAVELLI, Emmanuel , DÖHLA, Stefan , LECOMTE, Jérémie , DIETZ, Martin
IPC分类号： G10L19/012 , G10L19/00
CPC分类号： G10L19/012
摘要： The invention provides a decoder being configured for processing an encoded audio bitstream (BS), wherein the decoder (1 ) comprises: a bitstream decoder (2) configured to derive a decoded audio signal (DS) from the bitstream (BS), wherein the decoded audio signal (DS) comprises at least one decoded frame; a noise estimation device (3) configured to produce a noise estimation signal (NE) containing an estimation of the level and/or the spectral shape of a noise (N) in the decoded audio signal (DS); a comfort noise generating device (4) configured to derive a comfort noise signal (CN) from the noise estimation signal (NE); and a combiner (5) configured to combine the decoded frame of the decoded audio signal (DS) and the comfort noise signal (CN) in order to obtain an audio output signal (OS).
摘要翻译：本发明提供了一种被配置用于处理编码音频比特流（BS）的解码器，其中解码器（1）包括：比特流解码器（2），被配置为从比特流（BS）导出解码音频信号（DS），其中解码音频信号（DS）包括至少一个解码帧; 噪声估计装置（3），被配置为产生包含所述解码音频信号（DS）中的噪声（N）的电平和/或频谱形状的估计的噪声估计信号（NE）; 舒适噪声生成装置（4），被配置为从所述噪声估计信号（NE）导出舒适噪声信号（CN）; 以及组合器（5），其被配置为组合解码音频信号（DS）的解码帧和舒适噪声信号（CN），以获得音频输出信号（OS）。

23. 发明申请

WO2017153300A1 ERROR CONCEALMENT UNIT, AUDIO DECODER, AND RELATED METHOD AND COMPUTER PROGRAM USING CHARACTERISTICS OF A DECODED REPRESENTATION OF A PROPERLY DECODED AUDIO FRAME 审中-公开
标题翻译：错误隐藏单元，音频解码器以及相关方法和计算机程序，其使用解码表示的正确解码音频帧的特征
公开(公告)号：WO2017153300A1
公开(公告)日：2017-09-14
申请号：PCT/EP2017/055107
申请日：2017-03-03
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： LECOMTE, Jérémie , TOMASEK, Adrian
IPC分类号： G10L19/005
摘要： There is provided an error concealment unit (100), method, and computer program, for providing an error concealment audio information (107) for concealing a loss of an audio frame in an encoded audio information. In one embodiment, the error concealment unit provides an error concealment audio information for a lost audio frame on the basis of a properly decoded audio frame preceding the lost audio frame. The error concealment unit derives a damping factor (103) on the basis of characteristics of a decoded representation of the properly decoded audio frame preceding the lost audio frame. The error concealment unit performs a fade out (104) using the damping factor (103).
摘要翻译：提供了用于提供用于隐藏经编码的音频信息中的音频帧的丢失的错误隐藏音频信息（107）的错误隐藏单元（100），方法和计算机程序。在一个实施例中，错误隐藏单元基于丢失的音频帧之前的正确解码的音频帧来为丢失的音频帧提供错误隐藏音频信息。错误隐藏单元基于在丢失的音频帧之前的正确解码的音频帧的解码表示的特性来导出阻尼因子（103）。错误隐藏单元使用阻尼因子（103）执行淡出（104）。

24. 发明申请

WO2017129665A1 APPARATUS AND METHOD FOR IMPROVING A TRANSITION FROM A CONCEALED AUDIO SIGNAL PORTION TO A SUCCEEDING AUDIO SIGNAL PORTION OF AN AUDIO SIGNAL 审中-公开
标题翻译：用于改善从隐蔽音频信号部分到音频信号的成功音频信号部分的转换的装置和方法
公开(公告)号：WO2017129665A1
公开(公告)日：2017-08-03
申请号：PCT/EP2017/051623
申请日：2017-01-26
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： TOMASEK, Adrian , LECOMTE, Jérémie
IPC分类号： G10L19/005
CPC分类号： G10L19/005
摘要： An apparatus (10) for improving a transition from a concealed audio signal portion of an audio signal to a succeeding audio signal portion of the audio signal is provided. The apparatus (10) comprises a processor (11) being configured to generate a decoded audio signal portion of the audio signal depending on a first audio signal portion and depending on a second audio signal portion, wherein the first audio signal portion depends on the concealed audio signal portion, and wherein the second audio signal portion depends on the succeeding audio signal portion. Moreover, the apparatus (10) comprises an output interface (12) for outputting the decoded audio signal portion. Each of the first audio signal portion and of the second audio signal portion and of the decoded audio signal portion comprises a plurality of samples, wherein each of the plurality of samples of the first audio signal portion and of the second audio signal portion and of the decoded audio signal portion is defined by a sample position of a plurality of sample positions and by a sample value.
摘要翻译：提供了一种用于改善从音频信号的隐藏音频信号部分到音频信号的后续音频信号部分的转换的设备（10）。该设备（10）包括处理器（11），该处理器被配置为根据第一音频信号部分并且取决于第二音频信号部分来生成音频信号的解码音频信号部分，其中第一音频信号部分依赖于隐藏音频信号部分，并且其中第二音频信号部分依赖于随后的音频信号部分。此外，装置（10）包括用于输出解码的音频信号部分的输出接口（12）。第一音频信号部分和第二音频信号部分以及解码音频信号部分中的每一个包括多个采样，其中第一音频信号部分和第二音频信号部分的多个采样中的每一个以及解码的音频信号部分由多个样本位置的样本位置和样本值定义。

25. 发明申请

WO2017129270A1 APPARATUS AND METHOD FOR IMPROVING A TRANSITION FROM A CONCEALED AUDIO SIGNAL PORTION TO A SUCCEEDING AUDIO SIGNAL PORTION OF AN AUDIO SIGNAL 审中-公开
标题翻译：用于改善从隐蔽音频信号部分到音频信号的成功音频信号部分的转换的装置和方法
公开(公告)号：WO2017129270A1
公开(公告)日：2017-08-03
申请号：PCT/EP2016/060776
申请日：2016-05-12
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： TOMASEK, Adrian , LECOMTE, Jérémie
IPC分类号： G10L19/005
CPC分类号： G10L19/005
摘要： Apparatus and Method for Improving a Transition from a Concealed Audio Signal to a Succeeding Audio Signal Portion of an Audio Signal An apparatus (10) for improving a transition from a concealed audio signal portion of an audio signal to a succeeding audio signal portion of the audio signal is provided. The apparatus (10) comprises a processor (11) being configured to generate a decoded audio signal portion of the audio signal depending on a first audio signal portion and depending on a second audio signal portion, wherein the first audio signal portion depends on the concealed audio signal portion, and wherein the second audio signal portion depends on the succeeding audio signal portion. Moreover, the apparatus (10) comprises an output interface (12) for outputting the decoded audio signal portion.
摘要翻译：用于改善从隐藏音频信号到音频信号的后继音频信号部分的转换的设备和方法一种用于改善从音频信号的隐藏音频信号部分到提供音频信号的后续音频信号部分。该设备（10）包括处理器（11），该处理器被配置为根据第一音频信号部分并且取决于第二音频信号部分来生成音频信号的解码音频信号部分，其中第一音频信号部分依赖于隐藏音频信号部分，并且其中第二音频信号部分依赖于随后的音频信号部分。此外，装置（10）包括用于输出解码的音频信号部分的输出接口（12）。

26. 发明申请

WO2015063045A1 AUDIO DECODER AND METHOD FOR PROVIDING A DECODED AUDIO INFORMATION USING AN ERROR CONCEALMENT MODIFYING A TIME DOMAIN EXCITATION SIGNAL 审中-公开
标题翻译：音频解码器和使用修改时域激活信号的错误信号提供解码音频信息的方法
公开(公告)号：WO2015063045A1
公开(公告)日：2015-05-07
申请号：PCT/EP2014/073036
申请日：2014-10-27
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： LECOMTE, Jérémie
IPC分类号： G10L19/005 , G10L25/90 , G10L19/08 , G10L19/02
CPC分类号： G10L19/125 , G10L19/005 , G10L19/012 , G10L19/0212 , G10L19/022 , G10L19/038 , G10L19/08 , G10L19/12 , G10L19/26 , G10L25/90
摘要： An audio decoder (200; 400) for providing a decoded audio information (220; 412) on the basis of an encoded audio information (210; 410). The audio decoder comprises an error concealment (240; 480; 600) configured to provide an error concealment audio information (242; 482; 612) for concealing a loss of an audio frame, wherein the error concealment is configured to modify a time domain excitation signal (452, 456; 610) obtained for one or more audio frames preceding a lost audio frame, in order to obtain the error concealment audio information.
摘要翻译：一种用于基于编码的音频信息（210; 410）提供解码的音频信息（220; 412）的音频解码器（200; 400）。音频解码器包括错误隐藏（240; 480; 600），其被配置为提供用于隐藏音频帧的丢失的错误隐藏音频信息（242; 482; 612），其中所述错误隐藏被配置为修改时域激励针对丢失音频帧之前的一个或多个音频帧获得的信号（452,465; 610），以便获得错误隐藏音频信息。

27. 发明申请

WO2014202535A1 APPARATUS AND METHOD FOR IMPROVED CONCEALMENT OF THE ADAPTIVE CODEBOOK IN ACELP-LIKE CONCEALMENT EMPLOYING IMPROVED PULSE RESYNCHRONIZATION 审中-公开
标题翻译：用于改进自适应代码的改进的手段和方法在采用改进的脉冲重新定位的ACELP状态下
公开(公告)号：WO2014202535A1
公开(公告)日：2014-12-24
申请号：PCT/EP2014/062578
申请日：2014-06-16
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： LECOMTE, Jérémie , SCHNABEL, Michael , MARKOVIC, Goran , DIETZ, Martin , NEUGEBAUER, Bernhard
IPC分类号： G10L19/005 , G10L19/08 , G10L19/107
CPC分类号： G10L19/005 , G10L19/08 , G10L19/107 , G10L19/12 , G10L2019/0002 , G10L2019/0008
摘要： An apparatus for reconstructing a frame comprising a speech signal as a reconstructed frame is provided, said reconstructed frame being associated with one or more available frames, said one or more available frames being at least one of one or more preceding frames of the reconstructed frame and one or more succeeding frames of the reconstructed frame, wherein the one or more available frames comprise one or more pitch cycles as one or more available pitch cycles. The apparatus comprises a determination unit (210) for determining a sample number difference indicating a difference between a number of samples of one of the one or more available pitch cycles and a number of samples of a first pitch cycle to be reconstructed. Moreover, the apparatus comprises a frame reconstructor (220) for reconstructing the reconstructed frame by reconstructing, depending on the sample number difference and depending on the samples of said one of the one or more available pitch cycles, the first pitch cycle to be reconstructed as a first reconstructed pitch cycle. The frame reconstructor (220) is configured to reconstruct the reconstructed frame, such that the reconstructed frame completely or partially comprises the first reconstructed pitch cycle, such that the reconstructed frame completely or partially comprises a second reconstructed pitch cycle, and such that the number of samples of the first reconstructed pitch cycle differs from a number of samples of the second reconstructed pitch cycle.
摘要翻译：提供了一种用于重建包括作为重构帧的语音信号的帧的装置，所述重建帧与一个或多个可用帧相关联，所述一个或多个可用帧是重构帧的一个或多个先前帧中的至少一个，所述重建帧的一个或多个后续帧，其中所述一个或多个可用帧包括作为一个或多个可用音调周期的一个或多个音调周期。该装置包括确定单元（210），用于确定指示一个或多个可用音调周期中的一个或多个可用音调周期之一的采样数与要重构的第一音调周期的采样数之间的差的样本数差。此外，该装置包括帧重建器（220），用于通过根据样本数差重建根据所述一个或多个可用音调周期中的所述一个或多个可用音调周期的样本，通过重构以重构第一音调周期来重构重构帧第一个重建音调周期。帧重构器（220）被配置为重建重构帧，使得重构帧完全或部分地包括第一重构音调周期，使得重构帧完全或部分地包括第二重构音调周期，并且使得重构帧的数量第一重构音调周期的采样与第二重构音调周期的采样数不同。

28. 发明申请

WO2014128197A1 APPARATUS AND METHOD FOR ENCODING OR DECODING AN AUDIO SIGNAL USING A TRANSIENT-LOCATION DEPENDENT OVERLAP 审中-公开
标题翻译：使用瞬态位置相关重叠来编码或解码音频信号的装置和方法
公开(公告)号：WO2014128197A1
公开(公告)日：2014-08-28
申请号：PCT/EP2014/053293
申请日：2014-02-20
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： HELMRICH, Christian , LECOMTE, Jérémie , MARKOVIC, Goran , SCHNELL, Markus , EDLER, Bernd , REUSCHL, Stefan
IPC分类号： G10L19/025
CPC分类号： G10L19/025 , G10L19/0212 , G10L19/022 , H04N19/172 , H04N19/176 , H04N19/44
摘要： An apparatus for encoding an audio or image signal, comprises: a controllable windower (102) for windowing the audio or image signal to provide the sequence of blocks of windowed samples; a converter (104) for converting the sequence of blocks of windowed samples into a spectral representation comprising a sequence of frames of spectral values; a transient location detector (106) for identifying a location of a transient within a transient look-ahead region of a frame; and a controller (108) for controlling the controllable windower (102) to apply a specific window having a specified overlap length to the audio or image signal in response to an identified location (210-213) of the transient, wherein the controller (108) is configured to select the specific window from a group of at least three windows comprising a first window (201) having a first overlap length (203), a second window (215) having a second overlap length (218), and a third window (224) having a third overlap length (229) or having no overlap, wherein the first overlap length (203) is greater than the second overlap length (218), and wherein the second overlap length (218) is greater than the third overlap length (229) or greater than an overlap of zero, wherein the specific window is selected based on the transient location such that one of two time-adjacent overlapping windows has coefficients at the location of the transient and the other of the two time-adjacent overlapping windows has second window coefficients at the location of the transient, wherein the second coefficients are at least nine times greater than the first coefficients.
摘要翻译：一种用于对音频或图像信号进行编码的装置，包括：用于对音频或图像信号进行加窗以提供窗口样本的块序列的可控的加窗器（102）转换器（104），用于将窗口样本块的序列转换成包括频谱值的帧序列的频谱表示; 瞬态位置检测器（106），用于识别帧的瞬态前视区域内的瞬态位置; 以及控制器（108），用于响应于所述瞬态的所识别的位置（210-213），控制所述可控发射器（102）将具有指定重叠长度的特定窗口应用于所述音频或图像信号，其中所述控制器）被配置为从包括具有第一重叠长度（203）的第一窗口（201），具有第二重叠长度（218）的第二窗口（215））的至少三个窗口的组中选择特定窗口，以及第三窗口窗口（224）具有第三重叠长度（229）或不重叠，其中第一重叠长度（203）大于第二重叠长度（218），并且其中第二重叠长度（218）大于第三重叠长度重叠长度（229）或大于零的重叠，其中基于瞬态位置选择特定窗口，使得两个时间相邻重叠窗口中的一个具有瞬态位置处的系数，并且两个时间相邻重叠窗口中的另一个具有系数，相邻的重叠窗口 s在瞬态的位置具有第二窗系数，其中第二系数比第一系数大至少九倍。

29. 发明申请

WO2014202790A1 APPARATUS AND METHOD FOR IMPROVED SIGNAL FADE OUT IN DIFFERENT DOMAINS DURING ERROR CONCEALMENT 审中-公开
标题翻译：设备和方法改善信号在错误隐藏期间在不同的域中衰落
公开(公告)号：WO2014202790A1
公开(公告)日：2014-12-24
申请号：PCT/EP2014/063177
申请日：2014-06-23
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： SCHNABEL, Michael , MARKOVIC, Goran , SPERSCHNEIDER, Ralph , LECOMTE, Jérémie , HELMRICH, Christian
IPC分类号： G10L19/005 , G10L19/09 , G10L25/90
CPC分类号： G10L19/005 , G10L19/002 , G10L19/012 , G10L19/0212 , G10L19/06 , G10L19/07 , G10L19/083 , G10L19/09 , G10L19/12 , G10L19/22 , G10L2019/0002 , G10L2019/0011 , G10L2019/0016
摘要： An apparatus for decoding an audio signal is provided. The apparatus comprises a receiving interface (110), wherein the receiving interface (110) is configured to receive a first frame comprising a first audio signal portion of the audio signal, and wherein the receiving interface (110) is configured to receive a second frame comprising a second audio signal portion of the audio signal. Moreover, the apparatus comprises a noise level tracing unit (130), wherein the noise level tracing unit (130) is configured to determine noise level information depending on at least one of the first audio signal portion and the second audio signal portion, wherein the noise level information is represented in a tracing domain. Furthermore, the apparatus comprises a first reconstruction unit (140) for reconstructing, in a first reconstruction domain, a third audio signal portion of the audio signal depending on the noise level information, if a third frame of the plurality of frames is not received by the receiving interface (110) or if said third frame is received by the receiving interface (110) but is corrupted, wherein the first reconstruction domain is different from or equal to the tracing domain. Moreover, the apparatus comprises a transform unit (121) for transforming the noise level information from the tracing domain to a second reconstruction domain, if a fourth frame of the plurality of frames is not received by the receiving interface (110) or if said fourth frame is received by the receiving interface (110) but is corrupted, wherein the second reconstruction domain is different from the tracing domain, and wherein the second reconstruction domain is different from the first reconstruction domain. Moreover, the apparatus comprises a second reconstruction unit (141) for reconstructing, in the second reconstruction domain, a fourth audio signal portion of the audio signal depending on the noise level information being represented in the second reconstruction domain, if said fourth frame of the plurality of frames is not received by the receiving interface (110) or if said fourth frame is received by the receiving interface (110) but is corrupted.
摘要翻译：提供一种用于解码音频信号的装置。所述装置包括接收接口（110），其中所述接收接口（110）被配置为接收包括所述音频信号的第一音频信号部分的第一帧，并且其中所述接收接口（110）被配置为接收第二帧包括音频信号的第二音频信号部分。此外，该装置包括噪声电平跟踪单元（130），其中噪声电平跟踪单元（130）被配置为根据第一音频信号部分和第二音频信号部分中的至少一个来确定噪声电平信息，其中，噪声电平信息在跟踪域中表示。此外，该装置包括第一重建单元（140），用于在第一重建域中根据噪声电平信息重建音频信号的第三音频信号部分，如果多个帧中的第三帧未被接收接口（110）或者如果所述第三帧被接收接口（110）接收但被破坏，其中第一重构域不同于或等于跟踪域。此外，如果多个帧的第四帧没有被接收接口（110）接收，或者如果所述第四帧被接收，则该装置包括用于将噪声级信息从跟踪域变换到第二重建域的变换单元（121）帧由接收接口（110）接收但被破坏，其中第二重构域与跟踪域不同，并且其中第二重建域与第一重建域不同。此外，该装置包括第二重建单元（141），用于在第二重建域中根据在第二重构域中表示的噪声电平信息来重建音频信号的第四音频信号部分，如果所述第二重构单元多个帧不被接收接口（110）接收，或者如果所述第四帧被接收接口（110）接收但被破坏。

30. 发明申请

WO2014202788A1 APPARATUS AND METHOD REALIZING A FADING OF AN MDCT SPECTRUM TO WHITE NOISE PRIOR TO FDNS APPLICATION 审中-公开
标题翻译：设备和方法在FDIS应用程序之前实现了对白噪声的MDCT谱的衰减
公开(公告)号：WO2014202788A1
公开(公告)日：2014-12-24
申请号：PCT/EP2014/063175
申请日：2014-06-23
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： SCHNABEL, Michael , MARKOVIC, Goran , SPERSCHNEIDER, Ralph , LECOMTE, Jérémie , HELMRICH, Christian
IPC分类号： G10L19/005
CPC分类号： G10L19/005 , G10L19/002 , G10L19/012 , G10L19/0212 , G10L19/06 , G10L19/07 , G10L19/083 , G10L19/09 , G10L19/12 , G10L19/22 , G10L2019/0002 , G10L2019/0011 , G10L2019/0016
摘要： An apparatus for decoding an encoded audio signal to obtain a reconstructed audio signal is provided. The apparatus comprises a receiving interface (1210) for receiving one or more frames comprising information on a plurality of audio signal samples of an audio signal spectrum of the encoded audio signal, and a processor (1220) for generating the reconstructed audio signal. The processor (1220) is configured to generate the reconstructed audio signal by fading a modified spectrum to a target spectrum, if a current frame is not received by the receiving interface (1210) or if the current frame is received by the receiving interface (1210) but is corrupted, wherein the modified spectrum comprises a plurality of modified signal samples, wherein, for each of the modified signal samples of the modified spectrum, an absolute value of said modified signal sample is equal to an absolute value of one of the audio signal samples of the audio signal spectrum. Moreover, the processor (1220) is configured to not fade the modified spectrum to the target spectrum, if the current frame of the one or more frames is received by the receiving interface (1210) and if the current frame being received by the receiving interface (1210) is not corrupted.
摘要翻译：提供了一种用于解码编码音频信号以获得重构音频信号的装置。该装置包括用于接收包括关于编码音频信号的音频信号频谱的多个音频信号样本的信息的一个或多个帧的接收接口（1210）和用于生成重构音频信号的处理器（1220）。如果当前帧没有被接收接口（1210）接收，或者当前帧被接收接口（1210）接收到，则处理器（1220）被配置为通过将修改的频谱衰减到目标频谱来生成重构音频信号）但是被破坏，其中修改的频谱包括多个修改的信号样本，其中，对于修改频谱的每个修改的信号样本，所述修改的信号样本的绝对值等于音频之一的绝对值音频信号频谱的信号采样。此外，如果由接收接口（1210）接收到一个或多个帧的当前帧，并且如果接收接口正在接收当前帧，则处理器（1220）被配置为不将修改的频谱淡化到目标频谱（1210）没有损坏。

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