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1. 发明申请

WO2011048118A1 AUDIO SIGNAL ENCODER, AUDIO SIGNAL DECODER, METHOD FOR PROVIDING AN ENCODED REPRESENTATION OF AN AUDIO CONTENT, METHOD FOR PROVIDING A DECODED REPRESENTATION OF AN AUDIO CONTENT AND COMPUTER PROGRAM FOR USE IN LOW DELAY APPLICATIONS 审中-公开
标题翻译：音频信号编码器，音频信号解码器，用于提供音频内容的编码表示的方法，用于提供音频内容的解码表示的方法和用于低延迟应用的计算机程序
公开(公告)号：WO2011048118A1
公开(公告)日：2011-04-28
申请号：PCT/EP2010/065753
申请日：2010-10-19
申请人： FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , GEIGER, Ralf , SCHNELL, Markus , LECOMTE, Jérémie , SCHMIDT, Konstantin , FUCHS, Guillaume , RETTELBACH, Nikolaus
发明人： GEIGER, Ralf , SCHNELL, Markus , LECOMTE, Jérémie , SCHMIDT, Konstantin , FUCHS, Guillaume , RETTELBACH, Nikolaus
IPC分类号： G10L19/02 , G10L19/04 , G10L19/14
CPC分类号： G10L19/0212 , G10L19/022 , G10L19/20
摘要： An audio signal encoder (100) comprises a transform-domain path (12) configured to obtain a set of spectral coefficients (124) and noise-shaping information (126) on the basis of a time-domain representation (122) of a portion of the audio content to be encoded in a transform-domain mode. The transform-domain path comprises a time-domain-to-frequency-domain converter (130) configured to window a time-domain representation of the audio content, or a pre-processed version thereof, to obtain a windowed representation of the audio content, and to apply a time-domain-to-frequency-domain conversion, to derive a set of spectral coefficients from the windowed time-domain representation of the audio content. The audio signal decoder comprises a CELP path (140) configured to obtain an code-excitation information (144) and a linear-prediction-domain parameter information (146) on the basis of a portion of the audio content to be encoded in a CELP mode. The time-domain-to-frequency-domain converter (136) is configured to apply a predetermined asymmetric analysis window (520) for a windowing of a current portion of the audio content to be encoded in the transform-domain mode and following a portion of the audio content encoded in the transform-domain mode both if the current portion of the audio content is followed by a subsequent portion of the audio content to be encoded in the transform-domain mode and if the current portion of the audio content is followed by a subsequent portion of the audio content to be encoded in the CELP mode. The audio signal encoder is configured to selectively provide an aliasing cancellation information (164) if the current portion of the audio content is followed by a subsequent portion of the audio content to be encoded in the CELP mode.
摘要翻译：音频信号编码器（100）包括变换域路径（12），其经配置以基于部分的时域表示（122）获得一组频谱系数（124）和噪声整形信息（126）要以变换域模式编码的音频内容。变换域路径包括被配置为对音频内容的时域表示或其预处理版本进行窗口化的时域 - 频域转换器（130），以获得音频内容的窗口化表示并且应用时域到频域转换，从音频内容的加窗时域表示中导出一组频谱系数。音频信号解码器包括CELP路径（140），其被配置为基于要在CELP中编码的音频内容的一部分来获得码激励信息（144）和线性预测域参数信息（146）模式。时域 - 频域转换器（136）被配置为对预定的非对称分析窗口（520）应用于在变换域模式中对要编码的音频内容的当前部分的加窗，并且遵循一部分如果音频内容的当前部分后面是要以变换域模式编码的音频内容的后续部分，并且如果跟随音频内容的当前部分，则以变换域模式编码的音频内容通过CELP模式中要编码的音频内容的后续部分。音频信号编码器被配置为如果音频内容的当前部分跟随着要以CELP模式编码的音频内容的后续部分，则选择性地提供混叠消除信息（164）。

2. 发明申请

WO2011147950A1 LOW-DELAY UNIFIED SPEECH AND AUDIO CODEC 审中-公开
标题翻译：低延迟语音和音频编解码器
公开(公告)号：WO2011147950A1
公开(公告)日：2011-12-01
申请号：PCT/EP2011/058701
申请日：2011-05-27
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , GEIGER, Ralf , SCHNELL, Markus , FUCHS, Guillaume , RAVELLI, Emmanuel , BÄCKSTRÖM, Tom , LECOMTE, Jérémie , SCHMIDT, Konstantin , RETTELBACH, Nikolaus , LUTZKY, Manfred , GRILL, Bernhard
发明人： GEIGER, Ralf , SCHNELL, Markus , FUCHS, Guillaume , RAVELLI, Emmanuel , BÄCKSTRÖM, Tom , LECOMTE, Jérémie , SCHMIDT, Konstantin , RETTELBACH, Nikolaus , LUTZKY, Manfred , GRILL, Bernhard
IPC分类号： G10L19/14
CPC分类号： G10L19/20
摘要： A unified speech and audio decoder is described, which comprises a frame buffer configured to buffer a sub-part of a datastream composed of consecutive frames in units of the frames so that the subpart continuously comprises at least one frame, each frame representing a coded version of a respective portion of consecutive portions of an audio signal, and each frame comprising a mode identifier assigning the respective frame to a respective one of a plurality of coding modes comprising a CELP (codebook excitation linear prediction) coding mode and a transform coded excitation linear prediction coding mode. Further, the unified speech and audio decoder comprises a CELP decoder configured to decode the frames to which the CELP coding mode is assigned to reconstruct the respective portions, and a transform coded excitation linear prediction decoder configured to decode the frames to which the transform coded excitation linear prediction coding mode is assigned, to reconstruct the respective portions, wherein the frame buffer is configured to distribute the frames buffered to the CELP decoder and the transform coded excitation linear prediction decoder under removal of the respective frames from the frame buffer, frame-wise.
摘要翻译：描述了一种统一的语音和音频解码器，其包括帧缓冲器，其被配置为以帧为单位缓冲由连续帧组成的数据流的子部分，使得该子部分连续地包括至少一个帧，每个帧表示编码版本音频信号的连续部分的相应部分，并且每个帧包括将各个帧分配给包括CELP（码本激励线性预测）编码模式和变换编码激励线性的多个编码模式中的相应一个的模式标识符预测编码模式。此外，统一语音和音频解码器包括：CELP解码器，被配置为对分配有CELP编码模式的帧进行解码以重构各个部分;以及变换编码激励线性预测解码器，被配置为对转换编码激励分配线性预测编码模式，以重建各个部分，其中帧缓冲器被配置为在从帧缓冲器移除相应帧的情况下，将缓冲到CELP解码器和变换编码激励线性预测解码器的帧分配。

3. 发明申请

WO2012110480A1 AUDIO CODEC SUPPORTING TIME-DOMAIN AND FREQUENCY-DOMAIN CODING MODES 审中-公开
标题翻译：音频编解码器支持时域和频域编码模式
公开(公告)号：WO2012110480A1
公开(公告)日：2012-08-23
申请号：PCT/EP2012/052461
申请日：2012-02-14
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , GEIGER, Ralf , SCHMIDT, Konstantin , GRILL, Bernhard , LUTZKY, Manfred , WERNER, Michael , GAYER, Marc , HILPERT, Johannes , VALERO, Maria Luis , JÄGERS, Wolfgang
发明人： GEIGER, Ralf , SCHMIDT, Konstantin , GRILL, Bernhard , LUTZKY, Manfred , WERNER, Michael , GAYER, Marc , HILPERT, Johannes , VALERO, Maria Luis , JÄGERS, Wolfgang
IPC分类号： G10L19/14 , G10L19/00 , G10L19/04
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 audio codec supporting both, time-domain and frequency-domain coding modes, having low-delay and an increased coding efficiency in terms of iterate/distortion ratio, is obtained by configuring the audio encoder such that same operates in different operating modes such that if the active operative mode is a first operating mode, a mode dependent set of available frame coding modes is disjoined to a first subset of time-domain coding modes, and overlaps with a second subset of frequency-domain coding modes, whereas if the active operating mode is a second operating mode, the mode dependent set of available frame coding modes overlaps with both subsets, i.e. the subset of time-domain coding modes as well as the subset of frequency-domain coding modes.
摘要翻译：通过配置音频编码器，使得相同的操作在不同的操作模式下，可以获得支持时域和频域编码模式的音频编解码方式，具有低延迟和迭代/失真比方面提高的编码效率，使得如果活动操作模式是第一操作模式，则可用帧编码模式的模式相关集合被分离到时域编码模式的第一子集，并与频域编码模式的第二子集重叠，而如果活动操作模式是第二操作模式，可用帧编码模式的模式相关集合与两个子集重叠，即时域编码模式的子集以及频域编码模式的子集。

4. 发明申请

WO2012110481A1 AUDIO CODEC USING NOISE SYNTHESIS DURING INACTIVE PHASES 审中-公开
标题翻译：在无效阶段使用噪声合成的音频编解码器
公开(公告)号：WO2012110481A1
公开(公告)日：2012-08-23
申请号：PCT/EP2012/052462
申请日：2012-02-14
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , SETIAWAN, Panji , SCHMIDT, Konstantin , WILDE, Stephan
发明人： SETIAWAN, Panji , SCHMIDT, Konstantin , WILDE, Stephan
IPC分类号： G10L19/00
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： A parametric background noise estimate is continuously updated during an active or non-silence phase so that the noise generation may immediately be started with upon the entrance of an inactive phase following the active phase. In accordance with another aspect, a spectral domain is very efficiently used in order to parameterize the background noise thereby yielding a background noise synthesis which is more realistic and thus leads to a more transparent active to inactive phase switching.
摘要翻译：参数背景噪声估计在有源或非静默阶段期间不断更新，以便随着激活阶段之后的非活动阶段的进入，立即可以开始产生噪声。根据另一方面，频谱域被非常有效地用于参数化背景噪声，从而产生更现实的背景噪声合成，从而导致对无源相位切换的更透明的活动。

5. 发明申请

WO2016142337A1 AUDIO ENCODER FOR ENCODING A MULTICHANNEL SIGNAL AND AUDIO DECODER FOR DECODING AN ENCODED AUDIO SIGNAL 审中-公开
标题翻译：编码用于解码编码音频信号的多通道信号和音频解码器的音频编码器
公开(公告)号：WO2016142337A1
公开(公告)日：2016-09-15
申请号：PCT/EP2016/054776
申请日：2016-03-07
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： DISCH, Sascha , FUCHS, Guillaume , RAVELLI, Emmanuel , NEUKAM, Christian , SCHMIDT, Konstantin , BENNDORF, Conrad , NIEDERMEIER, Andreas , SCHUBERT, Benjamin , GEIGER, Ralf
IPC分类号： G10L19/008 , G10L19/02 , G10L19/04 , G10L21/038 , G10L19/18
CPC分类号： G10L19/008 , G10L19/02 , G10L19/032 , G10L19/04 , G10L19/13 , G10L19/18 , G10L21/038
摘要： A schematic block diagram of an audio encoder (2) for encoding a multichannel audio signal (4) is shown. The audio encoder comprises a linear prediction domain encoder (6), a frequency domain encoder (8), and a controller (10) for switching between the linear prediction domain encoder (6) and the frequency domain encoder (8). The controller is configured such that a portion of the multichannel signal is represented either by an encoded frame of the linear prediction domain encoder or by an encoded frame of the frequency domain encoder. The linear prediction domain encoder comprises a downmixer (12) for downmixing the multichannel signal (4) to obtain a downmixed signal (14). The linear prediction domain encoder further comprises a linear prediction domain core encoder (16) for encoding the downmix signal and furthermore, the linear prediction domain encoder comprises a first joint multichannel encoder (18) for generating first multichannel information (20) from the multichannel signal (4).
摘要翻译：示出了用于对多声道音频信号（4）进行编码的音频编码器（2）的示意性框图。音频编码器包括线性预测域编码器（6），频域编码器（8）和用于在线性预测域编码器（6）和频域编码器（8）之间切换的控制器（10）。控制器被配置为使得多信道信号的一部分由线性预测域编码器的编码帧或频域编码器的编码帧表示。线性预测域编码器包括用于下混多路信号（4）以获得下混合信号（14）的降混器（12）。线性预测域编码器还包括用于对下混信号进行编码的线性预测域核心编码器（16），此外，线性预测域编码器包括第一联合多通道编码器（18），用于从多通道信号产生第一多通道信息（20）（4）。

6. 发明申请

WO2016142336A1 AUDIO ENCODER FOR ENCODING A MULTICHANNEL SIGNAL AND AUDIO DECODER FOR DECODING AN ENCODED AUDIO SIGNAL 审中-公开
标题翻译：编码用于解码编码音频信号的多通道信号和音频解码器的音频编码器
公开(公告)号：WO2016142336A1
公开(公告)日：2016-09-15
申请号：PCT/EP2016/054775
申请日：2016-03-07
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： DISCH, Sascha , FUCHS, Guillaume , RAVELLI, Emmanuel , NEUKAM, Christian , SCHMIDT, Konstantin , BENNDORF, Conrad , NIEDERMEIER, Andreas , SCHUBERT, Benjamin , GEIGER, Ralf
IPC分类号： G10L19/008 , G10L19/04 , G10L19/02 , G10L21/038 , G10L19/18
CPC分类号： G10L19/008 , G10L19/02 , G10L19/032 , G10L19/04 , G10L19/13 , G10L19/18 , G10L21/038
摘要： Audio encoder (2") for encoding a multichannel signal (4) is shown. The audio encoder comprises a downmixer (12) for downmixing the multichannel signal (4) to obtain a downmix signal (14), a linear prediction domain core encoder (16) for encoding the downmix signal (14), wherein the downmix signal (14) has a low band and a high band, wherein the linear prediction domain core encoder (16) is configured to apply a bandwidth extension processing for parametrically encoding the high band, a filterbank (82) for generating a spectral representation of the multichannel signal (4), and a joint multichannel encoder (18) configured to process the spectral representation comprising the low band and the high band of the multichannel signal to generate multichannel information (20).
摘要翻译：音频编码器包括用于下混多路信号（4）以获得下混信号（14）的下混频器（12），线性预测域核心编码器（12） 16），其中所述下混合信号（14）具有低频带和高频带，其中所述线性预测域核心编码器（16）被配置为应用带宽扩展处理以对所述高混合信号（14）进行参数编码频带，用于产生多声道信号（4）的频谱表示的滤波器组（82）;以及联合多声道编码器（18），被配置为处理包括所述低频带和所述多声道信号的高频带的频谱表示，以生成多声道信息（20）。

7. 发明申请

WO2016016144A1 APPARATUS AND METHOD FOR GENERATING AN ENHANCED SIGNAL USING INDEPENDENT NOISE-FILLING 审中-公开
标题翻译：使用独立噪声填充生成增强信号的装置和方法
公开(公告)号：WO2016016144A1
公开(公告)日：2016-02-04
申请号：PCT/EP2015/067058
申请日：2015-07-24
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： DISCH, Sascha , GEIGER, Ralf , NIEDERMEIER, Andreas , NEUSINGER, Matthias , SCHMIDT, Konstantin , WILDE, Stephan , SCHUBERT, Benjamin , NEUKAM, Christian
IPC分类号： G10L19/028 , G10L21/038
CPC分类号： G10L19/028 , G10L19/0204 , G10L21/038 , G10L25/21
摘要： An apparatus for generating an enhanced signal from an input signal (600), wherein the enhanced signal has spectral values for an enhancement spectral region, the spectral values for the enhancement spectral regions not being contained in the input signal (600), comprises a mapper (602) for mapping a source spectral region of the input signal to a target region in the enhancement spectral region, the source spectral region comprising a noise-filling region (302); and a noise filler (604) configured for generating first noise values for the noise-filling region (302) in the source spectral region of the input signal and for generating second noise values for a noise region in the target region, wherein the second noise values are decorrelated from the first noise values or for generating second noise values for a noise region in the target region, wherein the second noise values are decorrelated from first noise values in the source region.
摘要翻译：一种用于从输入信号（600）生成增强信号的装置，其中所述增强信号具有用于增强频谱区域的频谱值，所述增强频谱区域的频谱值不包含在所述输入信号（600）中，包括映射器（602），用于将所述输入信号的源光谱区域映射到所述增强光谱区域中的目标区域，所述源光谱区域包括噪声填充区域（302）; 以及噪声填充器（604），其被配置用于为所述输入信号的源频谱区域中的所述噪声填充区域（302）生成第一噪声值，并且用于产生所述目标区域中的噪声区域的第二噪声值，其中所述第二噪声值从第一噪声值解相关或用于为目标区域中的噪声区域产生第二噪声值，其中第二噪声值与源区域中的第一噪声值相关。

8. 发明申请

WO2016202701A1 DOWNSCALED DECODING 审中-公开
标题翻译： DOWNSCALED解码
公开(公告)号：WO2016202701A1
公开(公告)日：2016-12-22
申请号：PCT/EP2016/063371
申请日：2016-06-10
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： SCHNELL, Markus , LUTZKY, Manfred , FOTOPOULOU, Eleni , SCHMIDT, Konstantin , BENNDORF, Conrad , TOMASEK, Adrian , ALBERT, Tobias , SEIDL, Timon
IPC分类号： G10L19/02 , G10L19/022
CPC分类号： G10L19/0212 , G10L19/022
摘要： A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of 1/4 of the frame length.
摘要翻译：如果用于缩小音频解码的合成窗口是非缩减音频解码过程中涉及的参考合成窗口的下采样版本，则可以更有效地和/或改进遵从性维护，缩小版本的音频解码过程可以通过下采样下采样因子通过下采样采样率和原始采样率偏离，并使用帧长度的1/4的段中的段插值下采样。

9. 发明申请

WO2015071173A1 ENCODER FOR ENCODING AN AUDIO SIGNAL, AUDIO TRANSMISSION SYSTEM AND METHOD FOR DETERMINING CORRECTION VALUES 审中-公开
标题翻译：编码音频信号的编码器，音频传输系统和确定校正值的方法
公开(公告)号：WO2015071173A1
公开(公告)日：2015-05-21
申请号：PCT/EP2014/073960
申请日：2014-11-06
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： SCHMIDT, Konstantin , FUCHS, Guillaume , NEUSINGER, Matthias , DIETZ, Martin
IPC分类号： G10L19/038
CPC分类号： G10L19/167 , G10L19/038 , G10L19/06
摘要： An encoder for encoding an audio signal comprises an analyzer configured for analyzing the audio signal and for determining analysis prediction coefficients from the audio signal. The encoder further comprises a converter configured for deriving converted prediction coefficients from the analysis prediction coefficients, a memory configured for storing a multitude of correction values and a calculator. The calculator comprises a processor configured for processing the converted prediction coefficients to obtain spectral weighting factors. The calculator further comprises a combiner configured for combining the spectral weighting factors and the multitude of correction values to obtain corrected weighting factors. A quantizer of the calculator is configured for quantizing the converted prediction coefficients using the corrected weighting factors to obtain a quantized representation of the converted prediction coefficients. The encoder comprises a bitstream former configured for forming an output signal based on the quantized representation of the converted prediction coefficients and based on the audio signal.
摘要翻译：用于对音频信号进行编码的编码器包括：分析器，被配置用于分析音频信号并用于从音频信号确定分析预测系数。编码器还包括被配置为从分析预测系数导出转换的预测系数的转换器，被配置为存储多个校正值的存储器和计算器。该计算器包括处理器，该处理器被配置用于处理转换的预测系数以获得光谱加权因子。计算器还包括组合器，其被配置为组合频谱加权因子和多个校正值以获得校正的加权因子。计算器的量化器被配置为使用校正的加权因子对转换的预测系数进行量化，以获得经转换的预测系数的量化表示。编码器包括被配置为基于经转换的预测系数的量化表示并基于音频信号形成输出信号的比特流形成器。

10. 发明申请

WO2014118185A1 AUDIO ENCODER, AUDIO DECODER, METHOD FOR PROVIDING AN ENCODED AUDIO INFORMATION, METHOD FOR PROVIDING A DECODED AUDIO INFORMATION, COMPUTER PROGRAM AND ENCODED REPRESENTATION USING A SIGNAL-ADAPTIVE BANDWIDTH EXTENSION 审中-公开
标题翻译：音频编码器，音频解码器，提供编码音频信息的方法，提供解码音频信息的方法，使用信号自适应带宽扩展的计算机程序和编码表示
公开(公告)号：WO2014118185A1
公开(公告)日：2014-08-07
申请号：PCT/EP2014/051641
申请日：2014-01-28
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： DISCH, Sascha , HELMRICH, Christian , HILPERT, Johannes , ROBILLIARD, Julien , SCHMIDT, Konstantin , WILDE, Stephan
IPC分类号： G10L19/22 , G10L21/038
CPC分类号： G10L19/24 , G10L19/20 , G10L19/26 , G10L19/265 , G10L21/038
摘要： An audio encoder for providing an encoded audio information on the basis of an input audio information comprises a low frequency encoder configured to encode a low frequency portion of the input audio information to obtain an encoded representation of the low frequency portion, and a bandwidth extension information provider configured to provide bandwidth extension information on the basis of the input audio information. The audio encoder is configured to selectively include bandwidth extension information into the encoded audio information in a signal-adaptive manner. An audio decoder comprises a low frequency decoder configured to decode an encoded representation of a low frequency portion to obtain a decoded representation of the low frequency portion, and a bandwidth extension configured to obtain a bandwidth extension signal using a blind bandwidth extension for portions of an audio content for which no bandwidth extension parameters are included in the encoded audio information, and to obtain the bandwidth extension signal using a parameter-guided bandwidth extension for portions of the audio content for which bandwidth extension parameters are included in the encoded audio information.
摘要翻译：一种用于基于输入音频信息提供编码音频信息的音频编码器包括：低频编码器，被配置为对输入音频信息的低频部分进行编码以获得低频部分的编码表示，以及带宽扩展信息提供商被配置为基于输入音频信息提供带宽扩展信息。音频编码器被配置为以信号自适应方式将带宽扩展信息选择性地包括在编码音频信息中。音频解码器包括：低频解码器，其被配置为对低频部分的编码表示进行解码以获得低频部分的解码表示;以及带宽扩展，被配置为使用盲带宽扩展获得带宽扩展信号在编码音频信息中不包括带宽扩展参数的音频内容，以及使用带宽扩展参数包含在编码音频信息中的音频内容部分的参数引导带宽扩展获得带宽扩展信号。

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