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1. 发明申请

WO2016142002A1 AUDIO ENCODER, AUDIO DECODER, METHOD FOR ENCODING AN AUDIO SIGNAL AND METHOD FOR DECODING AN ENCODED AUDIO SIGNAL 审中-公开
标题翻译：音频编码器，音频解码器，用于编码音频信号的方法和用于解码编码的音频信号的方法
公开(公告)号：WO2016142002A1
公开(公告)日：2016-09-15
申请号：PCT/EP2015/063658
申请日：2015-06-17
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： HELMRICH, Christian , EDLER, Bernd , NEUENDORF, Max , SCHUBERT, Benjamin
IPC分类号： G10L19/02
CPC分类号： G10L19/032 , G10L19/02 , H04N19/547 , H04N19/635
摘要： An encoder for encoding an audio signal. The encoder is configured to encode the audio signal in a transform domain or filter-bank domain, wherein the encoder is configured to determine spectral coefficients of the audio signal for a current frame and at least one previous frame, wherein the encoder is configured to selectively apply predictive encoding to a plurality of individual spectral coefficients or groups of spectral coefficients which are separated by at least one spectral coefficient.
摘要翻译：用于对音频信号进行编码的编码器。编码器被配置为在变换域或滤波器组域中对音频信号进行编码，其中编码器被配置为确定当前帧和至少一个先前帧的音频信号的频谱系数，其中编码器被配置为选择性地将预测编码应用于由至少一个频谱系数分隔的多个频谱系数或频谱系数组。

2. 发明申请

WO2018086946A1 DOWNMIXER AND METHOD FOR DOWNMIXING AT LEAST TWO CHANNELS AND MULTICHANNEL ENCODER AND MULTICHANNEL DECODER 审中-公开
标题翻译：下行链路和至少两个信道的多路信道编码器和多信道解码器的降频方法
公开(公告)号：WO2018086946A1
公开(公告)日：2018-05-17
申请号：PCT/EP2017/077820
申请日：2017-10-30
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： BORSS, Christian , EDLER, Bernd , FUCHS, Guillaume , BÜTHE, Jan , DISCH, Sascha , GHIDO, Florin , BAYER, Stefan , MULTRUS, Markus
IPC分类号： G10L19/008
摘要： A downmixer for downmixing at least two channels of a multichannel signal (12) having the two or more channels, comprises: a processor (10) for calculating a partial downmix signal (14) from the at least two channels; a complementary signal calculator (20) for calculating a complementary signal from the multichannel signal (12), the complementary signal (22) being different from the partial downmix signal (14); and an adder (30) for adding the partial downmix signal (14) and the complementary signal (22) to obtain a downmix signal (40) of the multichannel signal.
摘要翻译：一种用于对具有两个或更多个声道的多声道信号（12）的至少两个声道进行缩混的降混器，包括：处理器（10），用于根据至少两个声道中的至少一个来计算部分降混信号（14）两个频道; 用于计算来自多声道信号（12）的互补信号的互补信号计算器（20），所述互补信号（22）不同于所述部分缩混信号（14）; 和加法器（30），用于将部分下混信号（14）和互补信号（22）相加以获得多信道信号的下混信号（40）。

3. 发明申请

WO2015010947A1 AUDIO ENCODER, AUDIO DECODER AND RELATED METHODS USING TWO-CHANNEL PROCESSING WITHIN AN INTELLIGENT GAP FILLING FRAMEWORK 审中-公开
标题翻译：音频编码器，音频解码器以及使用在智能缝隙填充框架中进行两通道处理的相关方法
公开(公告)号：WO2015010947A1
公开(公告)日：2015-01-29
申请号：PCT/EP2014/065106
申请日：2014-07-15
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： DISCH, Sascha , NAGEL, Frederik , GEIGER, Ralf , THOSHKAHNA, Balaji Nagendran , SCHMIDT, Konstantin , BAYER, Stefan , NEUKAM, Christian , EDLER, Bernd , HELMRICH, Christian
IPC分类号： G10L19/008 , G10L21/038 , G10L19/18 , G10L19/02
CPC分类号： G10L19/008 , G10L19/02 , G10L19/0204 , G10L19/0208 , G10L19/0212 , G10L19/022 , G10L19/025 , G10L19/03 , G10L19/032 , G10L19/06 , G10L21/0388 , G10L25/06 , H04S1/007
摘要： An apparatus for generating a decoded two-channel signal, comprises: an audio processor (802) for decoding an encoded two-channel signal to obtain a first set of first spectral portions; a parametric decoder (804) for providing parametric data for a second set of second spectral portions and a two-channel identification identifying either a first or a second different two-channel representation for the second spectral portions; and a frequency regenerator (806) for regenerating a second spectral portion depending on a first spectral portion of the first set of first spectral portions, the parametric data for the second portion and the two-channel identification for the second portion.
摘要翻译：一种用于产生解码的双声道信号的装置，包括：音频处理器（802），用于对编码的双声道信号进行解码以获得第一组第一频谱部分; 参数解码器（804），用于提供用于第二组第二频谱部分的参数数据和识别用于所述第二频谱部分的第一或第二不同双信道表示的双信道标识; 以及用于根据所述第一组第一频谱部分的第一频谱部分，所述第二部分的参数数据和所述第二部分的双信道标识来再生第二频谱部分的频率再生器（806）。

4. 发明申请

WO2023285600A1 PROCESSOR FOR GENERATING A PREDICTION SPECTRUM BASED ON LONG-TERM PREDICTION AND/OR HARMONIC POST-FILTERING 审中-公开
公开(公告)号：WO2023285600A1
公开(公告)日：2023-01-19
申请号：PCT/EP2022/069751
申请日：2022-07-14
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： MARKOVIC, Goran , EDLER, Bernd , BAYER, Stefan , KIENE, Jan Frederik
IPC分类号： G10L19/09 , G10L19/18
摘要： A processor for processing an (encoded) audio signal, the processor comprising: an LTP buffer configured to receive samples derived from a frame of the encoded audio signal; an interval splitter configured to divide a time interval associated with a subsequent frame of the encoded audio signal into sub-intervals depending on the encoded pitch parameter; calculation means configured to derive sub-interval parameters from the encoded pitch parameter dependent on a position of the sub-intervals within the time interval associated with the subsequent frame of the encoded audio signal; a predictor configured for generating a prediction signal from the LTP buffer dependent on the sub-interval parameters; and a frequency domain transformer configured for generating a prediction spectrum (XP) based on the prediction signal; and/or the processor comprising: a splitter configured for splitting a time interval associated with a frame of the audio signal into a plurality of sub-intervals, each having a respective length, the respective length of the plurality of sub-intervals being dependent on a pitch lag value; a harmonic post-filter configured for filtering the plurality of sub-intervals, wherein the harmonic post-filter is based on a transfer function comprising a numerator and a denominator, where the numerator comprises a harmonicity value, and wherein the denominator comprises a pitch lag value and the harmonicity value and/or a gain value.

5. 发明申请

WO2022268347A1 APPARATUS AND METHOD FOR REMOVING UNDESIRED AUDITORY ROUGHNESS 审中-公开
公开(公告)号：WO2022268347A1
公开(公告)日：2022-12-29
申请号：PCT/EP2021/075816
申请日：2021-09-20
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： DISCH, Sascha , VAN DE PAR, Steven , NIEDERMEIER, Andreas , EDLER, Bernd
IPC分类号： G10L19/26 , G10L19/005 , G10L19/02 , G10L21/003 , G10L21/0316
摘要： An apparatus (100) for processing an audio input signal to obtain an audio output signal according to an embodiment. The apparatus (100) comprises a signal analyser (110) configured for determining information on an auditory roughness of one or more spectral bands of the audio input signal. Moreover, the apparatus (100) comprises a signal processor (120) configured for processing the audio input signal depending on the information on the auditory roughness of the one or more spectral bands.

6. 发明申请

WO2018019909A1 TIME DOMAIN ALIASING REDUCTION FOR NON-UNIFORM FILTERBANKS WHICH USE SPECTRAL ANALYSIS FOLLOWED BY PARTIAL SYNTHESIS 审中-公开
标题翻译：非均匀滤波器的时域抑制减少了部分综合的频谱分析
公开(公告)号：WO2018019909A1
公开(公告)日：2018-02-01
申请号：PCT/EP2017/068932
申请日：2017-07-26
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： WERNER, Nils , EDLER, Bernd
IPC分类号： G10L19/02 , G06F17/14
摘要： Embodiments provide an audio processor for processing an audio signal to obtain a subband representation of the audio signal. The audio processor comprises a cascaded lapped critically sampled transform stage and a time domain aliasing reduction stage. The cascaded lapped critically sampled transform stage is configured to perform a cascaded lapped critically sampled transform on at least two partially overlapping blocks of samples of the audio signal, to obtain a set of subband samples on the basis of a first block of samples of the audio signal, and to obtain a corresponding set of subband samples on the basis of a second block of samples of the audio signal. The time domain aliasing reduction stage is configured to perform a weighted combination of two corresponding sets of subband samples, one obtained on the basis of the first block of samples of the audio signal and one obtained on the basis on the second block of samples of the audio signal, to obtain an aliasing reduced subband representation of the audio signal.
摘要翻译：实施例提供了用于处理音频信号以获得音频信号的子带表示的音频处理器。音频处理器包括级联重叠临界采样变换级和时域混叠压缩级。级联重叠临界采样变换级被配置为对音频信号的至少两个部分重叠的采样块执行级联重叠临界采样变换，以基于音频采样的第一块样本获得一组子带采样信号，并且基于音频信号的第二采样块获得对应的一组子带采样。时域混叠减少级被配置为执行两个对应的子带样本集合的加权组合，一个子带样本是基于音频信号的第一样本块获得的，另一个是基于第二样本的第二样本获得的音频信号，以获得音频信号的混叠减少子带表示。

7. 发明申请

WO2014128194A1 APPARATUS AND METHOD FOR GENERATING AN ENCODED SIGNAL OR FOR DECODING AN ENCODED AUDIO SIGNAL USING A MULTI OVERLAP PORTION 审中-公开
标题翻译：用于生成编码信号或使用多重覆盖部分解码编码音频信号的装置和方法
公开(公告)号：WO2014128194A1
公开(公告)日：2014-08-28
申请号：PCT/EP2014/053287
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
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 generating an encoded signal, comprises: a window sequence controller (808) for generating a window sequence information (809) for windowing an audio or image signal, the window sequence information indicating a first window (1500) for generating a first frame of spectral values, a second window function (1502) and at least one third window function (1503) for generating a second frame of spectral values, wherein the first window function (1500), the second window function (1502) and the one or more third window functions overlap within a multi-overlap region (1300); a preprocessor (802) for windowing (902) a second block of samples corresponding to the second window function and the at least one third window functions using an auxiliary window function (1 100) to obtain a second block of windowed samples, and for preprocessing (904) the second block of windowed samples using a folding-in operation of a portion of the second block overlapping with a first block into the multi-overlap portion (1300) to obtain a preprocessed second block of windowed samples having a modified multi-overlap portion; a spectrum converter (804) for applying an aliasing-introducing transform (906) to the first block of samples using the first window function to obtain the first frame of spectral values, for applying the aliasing introducing transform to a first portion of the preprocessed second block of windowed samples using the second window function to obtain a first portion of spectral samples of a second frame and for applying the aliasing introducing transform to a second portion of the preprocessed second block of windowed samples using the one or more third window functions (1503) to obtain a second portion of spectral samples of the second frame; and a processor (806) for processing the first frame and the second frame to obtain encoded frames of the audio or image signal.
摘要翻译：一种用于产生编码信号的装置，包括：窗口序列控制器（808），用于产生用于窗口化音频或图像信号的窗口序列信息（809），所述窗口序列信息指示用于生成第一帧的第一窗口（1500）频谱值的第二窗函数（1502）和用于产生频谱值的第二帧的至少一个第三窗口函数（1503），其中第一窗函数（1500），第二窗函数（1502）和第一窗函数更多的第三窗口功能在多重重叠区域内重叠（1300）; 一个预处理器（802），用于对应于第二窗口函数的第二采样块（902）和使用辅助窗口函数（110）的第二窗口函数进行加窗（902），以获得窗口样本的第二块，并且用于预处理（904）使用第二块的与第一块重叠的部分的折叠操作的多个重叠部分（1300）的窗口样本的第二块，以获得具有修改的多重叠部分的预处理的第二窗口样本块，重叠部分频谱转换器（804），用于使用第一窗函数将混叠引入变换（906）应用于第一采样块，以获得频谱值的第一帧，用于将混叠引入变换应用于预处理的第二部分的第一部分使用第二窗口函数的窗口样本块获得第二帧的频谱样本的第一部分，并且使用一个或多个第三窗口函数（1503）将混叠引入变换应用于预处理的第二窗口样本块）以获得第二帧的光谱样本的第二部分; 以及用于处理第一帧和第二帧以获得音频或图像信号的编码帧的处理器（806）。

8. 发明申请

WO2020083727A1 PERCEPTUAL AUDIO CODING WITH ADAPTIVE NON-UNIFORM TIME/FREQUENCY TILING USING SUBBAND MERGING AND THE TIME DOMAIN ALIASING REDUCTION 审中-公开
公开(公告)号：WO2020083727A1
公开(公告)日：2020-04-30
申请号：PCT/EP2019/078112
申请日：2019-10-16
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： WERNER, Nils , EDLER, Bernd , DISCH, Sascha
IPC分类号： G10L19/02 , G06F17/14
摘要： Embodiments provide an audio processor for processing an audio signal to obtain a subband representation of the audio signal. The audio processor is configured to perform a cascaded lapped critically sampled transform on at least two partially overlapping blocks of samples of the audio signal, to obtain a set of subband samples on the basis of a first block of samples of the audio signal, and to obtain a corresponding set of subband samples on the basis of a second block of samples of the audio signal. Further, the audio processor is configured to perform a weighted combination of two corresponding sets of subband samples, one obtained on the basis of the first block of samples of the audio signal and one obtained on the basis on the second block of samples of the audio signal, to obtain an aliasing reduced subband representation of the audio signal; wherein performing a cascaded lapped critically sampled transform comprises segmenting a set of bins obtained on the basis of the first block of samples using at least two window functions, and to obtain at least two segmented sets of bins based on the segmented set of bins corresponding to the first block of samples; wherein performing a cascaded lapped critically sampled transform comprises segmenting a set of bins obtained on the basis of the second block of samples using the at least two window functions, and to obtain at least two sets of bins based on the segmented set of bins corresponding to the second block of samples; and wherein the sets of bins are processed using a second lapped critically sampled transform of the cascaded lapped critically sampled transform, wherein the second lapped critically sampled transform comprises performing lapped critically sampled transforms having the same framelength for at least one set of bins.

9. 发明申请

WO2016142357A1 AUDIO ENCODER, AUDIO DECODER, METHOD FOR ENCODING AN AUDIO SIGNAL AND METHOD FOR DECODING AN ENCODED AUDIO SIGNAL 审中-公开
标题翻译：音频编码器，音频解码器，用于编码音频信号的方法以及用于解码编码的音频信号的方法
公开(公告)号：WO2016142357A1
公开(公告)日：2016-09-15
申请号：PCT/EP2016/054831
申请日：2016-03-07
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： EDLER, Bernd , HELMRICH, Christian , NEUENDORF, Max , SCHUBERT, Benjamin
IPC分类号： G10L19/02
CPC分类号： G10L19/02
摘要： An encoder for encoding an audio signal. The encoder is configured to encode the audio signal in a transform domain or filter-bank domain, wherein the encoder is configured to determine spectral coefficients of the audio signal for a current frame and at least one previous frame, wherein the encoder is configured to selectively apply predictive encoding to a plurality of individual spectral coefficients or groups of spectral coefficients which are separated by at least one spectral coefficient.
摘要翻译：
用于编码音频信号的编码器。编码器被配置为在变换域或滤波器组区域中对音频信号进行编码，其中编码器被配置为确定当前帧和至少一个先前帧的音频信号的频谱系数，其中编码器被配置为选择性地将预测编码应用于由至少一个频谱系数分开的多个单独频谱系数或频谱系数组。

10. 发明申请

WO2015010954A1 APPARATUS AND METHOD FOR ENCODING AND DECODING AN ENCODED AUDIO SIGNAL USING TEMPORAL NOISE/PATCH SHAPING 审中-公开
标题翻译：使用时间噪声/调整形状编码和解码编码音频信号的装置和方法
公开(公告)号：WO2015010954A1
公开(公告)日：2015-01-29
申请号：PCT/EP2014/065123
申请日：2014-07-15
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： DISCH, Sascha , NAGEL, Frederik , GEIGER, Ralf , THOSHKAHNA, Balaji Nagendran , SCHMIDT, Konstantin , BAYER, Stefan , NEUKAM, Christian , EDLER, Bernd , HELMRICH, Christian
IPC分类号： G10L19/03 , G10L21/0388 , G10L19/02 , G10L19/028
CPC分类号： G10L19/008 , G10L19/02 , G10L19/0204 , G10L19/0208 , G10L19/0212 , G10L19/022 , G10L19/025 , G10L19/03 , G10L19/032 , G10L19/06 , G10L21/0388 , G10L25/06 , H04S1/007
摘要： An apparatus for decoding an encoded audio signal, comprises: a spectral domain audio decoder (602) for generating a first decoded representation of a first set of first spectral portions being spectral prediction residual values; a frequency regenerator (604) for generating a reconstructed second spectral portion using a first spectral portion of the first set of first spectral portions, wherein the reconstructed second spectral portion additionally comprises spectral prediction residual values; and an inverse prediction filter (606) for performing an inverse prediction over frequency using the spectral residual values for the first set of first spectral portions and the reconstructed second spectral portion using prediction filter information (607) included in the encoded audio signal.
摘要翻译：一种用于解码编码音频信号的装置，包括：频域音频解码器（602），用于产生第一组第一频谱部分的第一解码表示，其是频谱预测残差值; 用于使用所述第一组第一光谱部分的第一光谱部分生成重构的第二光谱部分的频率再生器（604），其中所述重建的第二光谱部分另外包括光谱预测残差值; 以及使用包括在编码音频信号中的预测滤波器信息（607）使用第一组第一频谱部分的频谱残余值和重构的第二频谱部分来执行频率的反向预测的逆预测滤波器（606）。

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