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31. 发明申请

WO2012110473A1 APPARATUS AND METHOD FOR ENCODING AND DECODING AN AUDIO SIGNAL USING AN ALIGNED LOOK-AHEAD PORTION 审中-公开
标题翻译：使用对齐的前置部分编码和解码音频信号的装置和方法
公开(公告)号：WO2012110473A1
公开(公告)日：2012-08-23
申请号：PCT/EP2012/052450
申请日：2012-02-14
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , RAVELLI, Emmanuel , GEIGER, Ralf , SCHNELL, Markus , FUCHS, Guillaume , RUOPPILA, Vesa , BÄCKSTRÖM, Tom , GRILL, Bernhard , HELMRICH, Christian
发明人： RAVELLI, Emmanuel , GEIGER, Ralf , SCHNELL, Markus , FUCHS, Guillaume , RUOPPILA, Vesa , BÄCKSTRÖM, Tom , GRILL, Bernhard , HELMRICH, Christian
IPC分类号： G10L19/02 , G10L19/04 , G10L19/00 , G10L19/14
CPC分类号： G10L19/00 , G10K11/16 , G10L19/005 , G10L19/012 , G10L19/0212 , G10L19/025 , G10L19/03 , G10L19/04 , G10L19/107 , G10L19/12 , G10L19/22 , G10L19/26 , G10L21/0216 , G10L25/06 , G10L25/78
摘要： An apparatus for encoding an audio signal having a stream of audio samples (100) comprises: a windower (102) for applying a prediction coding analysis window (200) to the stream of audio samples to obtain windowed data for a prediction analysis and for applying a transform coding analysis window (204) to the stream of audio samples to obtain windowed data for a transform analysis, wherein the transform coding analysis window is associated with audio samples within a current frame of audio samples and with audio samples of a predefined portion of a future frame of audio samples being a transform-coding look-ahead portion (206), wherein the prediction coding analysis window is associated with at least the portion of the audio samples of the current frame and with audio samples of a predefined portion of the future frame being a prediction coding look-ahead portion (208), wherein the transform coding look-ahead portion (206) and the prediction coding look-ahead portion (208) are identically to each other or are different from each other by less than 20% of the prediction coding look-ahead portion (208) or less than 20% of the transform coding look-ahead portion 206; and an encoding processor (104) for generating prediction coded data for the current frame using the windowed data for the prediction analysis or for generating transform coded data for the current frame using the windowed data for the transform analysis.
摘要翻译：一种用于对具有音频样本流（100）的音频信号进行编码的装置包括：用于将预测编码分析窗口（200）应用于音频样本流的收敛机（102），以获得用于预测分析和应用的窗口数据变换编码分析窗口（204）到音频样本流以获得用于变换分析的加窗数据，其中变换编码分析窗口与音频样本的当前帧内的音频样本相关联，并且具有预定义部分的音频样本音频样本的未来帧是变换编码先行部分（206），其中预测编码分析窗口与当前帧的音频样本的至少一部分相关联，并且与预定义部分的音频样本相关联未来帧是预测编码预测部分（208），其中变换编码预测部分（206）和预测编码预览部分（208）是相同的彼此相差不到预测编码预测部分（208）的20％或小于变换编码预读部分206的20％; 以及编码处理器（104），用于使用用于预测分析的加窗数据产生用于当前帧的预测编码数据，或者使用用于变换分析的窗口数据来生成当前帧的变换编码数据。

32. 发明申请

WO2011048094A1 MULTI-MODE AUDIO CODEC AND CELP CODING ADAPTED THEREFORE 审中-公开
标题翻译：多模式音频编解码器和CELP编码适配器
公开(公告)号：WO2011048094A1
公开(公告)日：2011-04-28
申请号：PCT/EP2010/065718
申请日：2010-10-19
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , GEIGER, Ralf , FUCHS, Guillaume , MULTRUS, Markus , GRILL, Bernhard
发明人： GEIGER, Ralf , FUCHS, Guillaume , MULTRUS, Markus , GRILL, Bernhard
IPC分类号： G10L19/14 , G10L19/08
CPC分类号： G10L19/12 , G10L19/03 , G10L19/04 , G10L19/083 , G10L19/20 , G10L2019/0002
摘要： In accordance with a first aspect of the present invention, bitstream elements of sub-frames are encoded differentially to a global gain value so that a change of the global gain value of the frames results in an adjustment of an output level of the decoded representation of the audio content. Concurrently, the differential coding saves bits otherwise occurring when introducing a new syntax element into an encoded bitstream. Even further, the differential coding enables the lowering of the burden of globally adjusting the gain of an encoded bitstream by allowing the time resolution in setting the global gain value to be lower than the time resolution at which the afore-mentioned bitstream element differentially encoded to the global gain value adjusts the gain of the respective sub-frame. In accordance with another aspect, a global gain control across CELP coded frames and transform coded frames is achieved by co-controlling the gain of the codebook excitation of the CELP codec, along with a level of the transform or inverse transform of the transform coded frames. According to even another aspect, a variation of the loudness of a CELP coded bitstream upon changing the respective gain value is rendered more well adapted to the behavior of transform coded level adjustments, by performing the gain value determination in CELP coding in the weighted domain of the excitation signal.
摘要翻译：根据本发明的第一方面，子帧的比特流元素被差分地编码为全局增益值，使得帧的全局增益值的改变导致对解码表示的输出电平的调整音频内容。同时，差分编码保存在将新的语法元素引入到编码比特流中时所发生的位。此外，差分编码能够通过在将全局增益值设定为低于上述比特流元素差分编码的时间分辨率的同时允许时间分辨率来降低全局调整编码比特流的增益的负担全局增益值调整相应子帧的增益。根据另一方面，跨CELP编码帧和变换编码帧的全局增益控制通过共同控制CELP编解码器的码本激励的增益以及变换编码帧的变换或逆变换的级别来实现。根据另一方面，通过在加权域中的CELP编码中执行增益值确定，在改变相应增益值时，CELP编码比特流的响度的变化被更好地适应于变换编码电平调整的行为激励信号。

33. 发明申请

WO2012110448A1 APPARATUS AND METHOD FOR CODING A PORTION OF AN AUDIO SIGNAL USING A TRANSIENT DETECTION AND A QUALITY RESULT 审中-公开
标题翻译：使用瞬态检测和质量结果编码音频信号的一部分的装置和方法
公开(公告)号：WO2012110448A1
公开(公告)日：2012-08-23
申请号：PCT/EP2012/052396
申请日：2012-02-13
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , HELMRICH, Christian , FUCHS, Guillaume , MARKOVIC, Goran
发明人： HELMRICH, Christian , FUCHS, Guillaume , MARKOVIC, Goran
IPC分类号： G10L19/14
CPC分类号： G10L19/00 , G10K11/16 , G10L19/005 , G10L19/012 , G10L19/0212 , G10L19/025 , G10L19/03 , G10L19/04 , G10L19/107 , G10L19/12 , G10L19/22 , G10L19/26 , G10L21/0216 , G10L25/06 , G10L25/78
摘要： An apparatus for coding a portion of an audio signal (10) to obtain an encoded audio signal (26) for the portion of the audio signal comprises a transient detector (12) for detecting whether a transient signal is located in the portion of the audio signal to obtain a transient detection result (14), an encoder stage (16) for performing a first encoding algorithm on the audio signal, the first encoding algorithm having a first characteristic, and for performing a second encoding algorithm on the audio signal, the second encoding algorithm having a second characteristic being different from the first characteristic, a processor (18) for determining which encoding algorithm results in an encoded audio signal being a better approximation to the portion of the audio signal with respect to the other encoding algorithm to obtain a quality result (20), and a controller (22) for determining whether the encoded audio signal for the portion of the audio signal is to be generated by either the first encoding algorithm or the second encoding algorithm based on the transient detection result (14) and the quality result (20).
摘要翻译：用于编码音频信号（10）的一部分以获得用于音频信号的该部分的编码音频信号（26）的装置包括用于检测瞬态信号是否位于音频部分中的瞬态检测器（12）信号以获得瞬时检测结果（14），用于对音频信号执行第一编码算法的编码器级（16），具有第一特性的第一编码算法，以及用于对音频信号执行第二编码算法，具有不同于第一特性的第二特征的第二编码算法，用于确定哪个编码算法导致编码音频信号相对于另一编码算法更好地近似于音频信号部分以获得的处理器（18）质量结果（20）和用于确定音频信号部分的编码音频信号是否将通过冷杉产生的控制器（22） st编码算法或基于瞬态检测结果（14）和质量结果（20）的第二编码算法。

34. 发明申请

WO2010003491A1 AUDIO ENCODER AND DECODER FOR ENCODING AND DECODING FRAMES OF SAMPLED AUDIO SIGNAL 审中-公开
标题翻译：用于编码和解码采样音频信号的音频编码器和解码器
公开(公告)号：WO2010003491A1
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004015
申请日：2009-06-04
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , VOICEAGE CORPORATION , GEIGER, Ralf , GRILL, Bernhard , BESSETTE, Bruno , GOURNAY, Philippe , FUCHS, Guillaume , MULTRUS, Markus , NEUENDORF, Max , SCHULLER, Gerald
发明人： GEIGER, Ralf , GRILL, Bernhard , BESSETTE, Bruno , GOURNAY, Philippe , FUCHS, Guillaume , MULTRUS, Markus , NEUENDORF, Max , SCHULLER, Gerald
IPC分类号： G06F17/14 , G10L19/02 , G10L19/14
CPC分类号： G10L19/20 , G10L19/0212 , G10L19/08
摘要： An audio encoder (10) adapted for encoding frames of a sampled audio signal to obtain encoded frames, wherein a frame comprises a number of time domain audio samples. The audio encoder (10) comprises a predictive coding analysis stage (12) for determining information on coefficients of a synthesis filter and a prediction domain frame based on a frame of audio samples. The audio encoder (10) further comprises a time-aliasing introducing transformer (14) for transforming overlapping prediction domain frames to the frequency domain to obtain prediction domain frame spectra, wherein the time-aliasing introducing transformer (14) is adapted for transforming the overlapping prediction domain frames in a critically-sampled way. Moreover, the audio encoder (10) comprises a redundancy reducing encoder (16) for encoding the prediction domain frame spectra to obtain the encoded frames based on the coefficients and the encoded prediction domain frame spectra.
摘要翻译：一种音频编码器（10），适于对采样的音频信号的帧进行编码以获得编码的帧，其中帧包括多个时域音频采样。音频编码器（10）包括用于基于音频样本的帧来确定关于合成滤波器和预测域帧的系数的信息的预测编码分析阶段（12）。音频编码器（10）还包括时间混叠引入变压器（14），用于将重叠的预测域帧变换到频域以获得预测域帧频谱，其中时间混叠引入变压器（14）适于变换重叠预测域帧采用严格抽样方式。此外，音频编码器（10）包括用于根据系数和编码的预测域帧频谱对预测域帧频谱进行编码以获得编码帧的冗余减少编码器（16）。

35. 发明申请

WO2010040503A2 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，解码音频信号的方法，编码音频信号的方法，计算机程序和音频信号
公开(公告)号：WO2010040503A2
公开(公告)日：2010-04-15
申请号：PCT/EP2009/007169
申请日：2009-10-06
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ... , FUCHS, Guillaume , MULTRUS, Markus , GEIGER, Ralf , BORSUM, Arne , NAGEL, Frederik , ROBILLIARD, Julien , SUBBARAMAN, Vignesh , LECOMTE, Jérémie
发明人： FUCHS, Guillaume , MULTRUS, Markus , GEIGER, Ralf , BORSUM, Arne , NAGEL, Frederik , ROBILLIARD, Julien , SUBBARAMAN, Vignesh , LECOMTE, Jérémie
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：用于基于经熵编码的音频信息提供经解码音频信息的音频解码器包括经配置以取决于上下文解码经熵编码音频信息的基于上下文的熵解码器，所述上下文基于在非重置操作状态中的先前解码的音频信息。基于上下文的熵解码器被配置为根据上下文来选择映射信息，以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，其被配置为响应于编码的音频信息的辅助信息而重置用于选择映射信息到默认上下文的上下文，该默认上下文独立于先前解码的音频信息。

36. 发明申请

WO2022079130A1 AUDIO GENERATOR AND METHODS FOR GENERATING AN AUDIO SIGNAL AND TRAINING AN AUDIO GENERATOR 审中-公开
公开(公告)号：WO2022079130A1
公开(公告)日：2022-04-21
申请号：PCT/EP2021/078372
申请日：2021-10-13
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： AHMED, Ahmed Mustafa Mahmoud , PIA, Nicola , FUCHS, Guillaume , MULTRUS, Markus , KORSE, Srikanth , GUPTA, Kishan , BÜTHE, Jan
IPC分类号： G10L13/02 , G10L13/08
摘要： There are disclosed techniques for generating an audio signal and training an audio generator. An audio generator (10) may generate an audio signal (16) from an input signal (14) and target data (12) representing the audio signal (16), it comprises: a first processing block (40, 50, 50a-50h), receiving first data (15, 59a) derived from the input signal (14) and outputting first output data (69); a second processing block (45), receiving, as second data, the first output data (69) or data derived from the first output data (69). The first processing block (50) comprises: a conditioning set of learnable layers (71, 72, 73) configured to process the target data (12) to obtain conditioning features parameters (74, 75); and a styling element (77), configured to apply the conditioning feature parameters (74, 75) to the first data (15, 59a) or normalized first data (59, 76').

37. 发明申请

WO2022079044A1 APPARATUS AND METHOD FOR ENCODING A PLURALITY OF AUDIO OBJECTS USING DIRECTION INFORMATION DURING A DOWNMIXING OR APPARATUS AND METHOD FOR DECODING USING AN OPTIMIZED COVARIANCE SYNTHESIS 审中-公开
公开(公告)号：WO2022079044A1
公开(公告)日：2022-04-21
申请号：PCT/EP2021/078209
申请日：2021-10-12
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： EICHENSEER, Andrea , KORSE, Srikanth , BAYER, Stefan , KÜCH, Fabian , THIERGART, Oliver , FUCHS, Guillaume , WECKBECKER, Dominik , HERRE, Jürgen , MULTRUS, Markus
IPC分类号： G10L19/008 , H04S7/00
摘要： An apparatus for encoding a plurality of audio objects and related metadata indicating direction information on the plurality of audio objects, comprises: a downmixer (400) for downmixing the plurality of audio objects to obtain one or more transport channels; a transport channel encoder (300) for encoding one or more transport channels to obtain one or more encoded transport channels; and an output interface (200) for outputting an encoded audio signal comprising the one or more encoded transport channels, wherein the downmixer (400) is configured to downmix the plurality of audio objects in response to the direction information on the plurality of audio objects.

38. 发明申请

WO2022078651A1 AUDIO GENERATOR AND METHODS FOR GENERATING AN AUDIO SIGNAL AND TRAINING AN AUDIO GENERATOR 审中-公开
公开(公告)号：WO2022078651A1
公开(公告)日：2022-04-21
申请号：PCT/EP2021/072075
申请日：2021-08-06
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： AHMED, Ahmed Mustafa Mahmoud , PIA, Nicola , FUCHS, Guillaume , MULTRUS, Markus , KORSE, Srikanth , GUPTA, Kishan , BÜTHE, Jan
IPC分类号： G10L13/08 , G10L13/02 , G06N3/02 , G10L13/047
摘要： There are disclosed techniques for generating an audio signal and training an audio generator. An audio generator (10) may generate an audio signal (16) from an input signal (14) and target data (12) representing the audio signal (16). The target data (12) is derived from text. The audio generator comprises: a first processing block (40, 50, 50a-50h), receiving first data (15, 59a) derived from the input signal (14) and outputting first output data (69); a second processing block (45), receiving, as second data, the first output data (69) or data derived from the first output data (69). The first processing block (50) comprises: a conditioning set of learnable layers (71, 72, 73) configured to process the target data (12) to obtain conditioning features parameters (74, 75); and a styling element (77), configured to apply the conditioning feature parameters (74, 75) to the first data (15, 59a) or normalized first data (59, 76').

39. 发明申请

WO2022078634A1 AUDIO GENERATOR AND METHODS FOR GENERATING AN AUDIO SIGNAL AND TRAINING AN AUDIO GENERATOR 审中-公开
公开(公告)号：WO2022078634A1
公开(公告)日：2022-04-21
申请号：PCT/EP2021/059805
申请日：2021-04-15
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： AHMED, Ahmed Mustafa Mahmoud , PIA, Nicola , FUCHS, Guillaume , MULTRUS, Markus , KORSE, Srikanth , GUPTA, Kishan , BÜTHE, Jan
IPC分类号： G10L13/08
摘要： There are disclosed techniques for generating an audio signal and training an audio generator. An audio generator (10) may generate an audio Signal (16) from an input Signal (14) and target data (12) representing the audio Signal (16). It comprises: a first processing block (40, 50, 50a-50h), receiving first data (15, 59a) derived from the input Signal (14) and outputting first output data (69); a second processing block (45), receiving, as second data, the first output data (69) or data derived from the first output data (69). The first processing block (50) comprises: a conditioning set of learnable layers (71, 72, 73) configured to process the target data (12) to obtain conditioning features parameters (74, 75); and a styling element (77), configured to apply the conditioning feature parameters (74, 75) to the first data (15, 59a) or normalized first data (59, 76').

40. 发明申请

WO2020094263A1 APPARATUS AND AUDIO SIGNAL PROCESSOR, FOR PROVIDING A PROCESSED AUDIO SIGNAL REPRESENTATION, AUDIO DECODER, AUDIO ENCODER, METHODS AND COMPUTER PROGRAMS 审中-公开
公开(公告)号：WO2020094263A1
公开(公告)日：2020-05-14
申请号：PCT/EP2019/063693
申请日：2019-05-27
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： BAYER, Stefan , MABEN, Pallavi , RAVELLI, Emmanuel , FUCHS, Guillaume , FOTOPOULOU, Eleni , MULTRUS, Markus
IPC分类号： G10L19/022 , G10L25/45 , G10L19/008
摘要： An apparatus for providing a processed audio signal representation on the basis of input audio signal representation configured to apply an un-windowing, in order to provide the processed audio signal representation on the basis of the input audio signal representation. The apparatus is configured to adapt the un-windowing in dependence on one or more signal characteristics and/or in dependence on one or more processing parameters used for a provision of the input audio signal representation.

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