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1. 发明申请

WO2012110482A2 NOISE GENERATION IN AUDIO CODECS 审中-公开
标题翻译：音频编解码器中的噪声产生
公开(公告)号：WO2012110482A2
公开(公告)日：2012-08-23
申请号：PCT/EP2012/052464
申请日：2012-02-14
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , SETIAWAN, Panji , WILDE, Stephan , LOMBARD, Anthony , DIETZ, Martin
发明人： SETIAWAN, Panji , WILDE, Stephan , LOMBARD, Anthony , DIETZ, Martin
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： The spectral domain is 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：谱域被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，从而导致更加透明的主动到非主动的相位切换。

2. 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。

3. 发明申请

WO2011110494A1 IMPROVED MAGNITUDE RESPONSE AND TEMPORAL ALIGNMENT IN PHASE VOCODER BASED BANDWIDTH EXTENSION FOR AUDIO SIGNALS 审中-公开
标题翻译：基于相位VOCODER的音频信号带宽延迟的改进的抖动响应和时间对齐
公开(公告)号：WO2011110494A1
公开(公告)日：2011-09-15
申请号：PCT/EP2011/053298
申请日：2011-03-04
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , DOLBY INTERNATIONAL AB , DISCH, Sascha , NAGEL, Frederik , WILDE, Stephan , VILLEMOES, Lars , EKSTRAND, Per
发明人： DISCH, Sascha , NAGEL, Frederik , WILDE, Stephan , VILLEMOES, Lars , EKSTRAND, Per
IPC分类号： G10L21/02
CPC分类号： G10L19/0208 , G10L19/022 , G10L19/16 , G10L19/26 , G10L21/038
摘要： An apparatus for generating a bandwidth extended audio signal from an input signal, comprises a patch generator for generating one or more patch signals from the input signal, wherein the patch generator is configured for performing a time stretching (1800, 1808) of subband signals from an analysis filterbank, and wherein the patch generator further comprises a phase adjuster (1806) for adjusting phases of the subband signals using a filterbank-channel dependent phase correction.
摘要翻译：一种用于从输入信号产生带宽扩展音频信号的装置，包括用于从所述输入信号产生一个或多个贴片信号的贴片发生器，其中所述贴片发生器被配置用于执行子带信号的时间延伸（1800,1808）分析滤波器组，并且其中所述补丁发生器还包括用于使用滤波器组信道相关相位校正来调整所述子带信号的相位的相位调整器（1806）。

4. 发明申请

WO2011110500A1 APPARATUS AND METHOD FOR PROCESSING AN INPUT AUDIO SIGNAL USING CASCADED FILTERBANKS 审中-公开
标题翻译：使用CASCAD FILTERBANK处理输入音频信号的装置和方法
公开(公告)号：WO2011110500A1
公开(公告)日：2011-09-15
申请号：PCT/EP2011/053315
申请日：2011-03-04
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , DOLBY INTERNATIONAL AB , VILLEMOES, Lars , EKSTRAND, Per , DISCH, Sascha , NAGEL, Frederik , WILDE, Stephan
发明人： VILLEMOES, Lars , EKSTRAND, Per , DISCH, Sascha , NAGEL, Frederik , WILDE, Stephan
IPC分类号： G10L19/02 , G10L21/02 , G10L21/04
CPC分类号： G10L19/008 , G10L19/0204 , G10L21/038 , G10L21/04
摘要： An apparatus for processing an input audio signal (2300) relies on a cascade of filterbanks, the cascade comprising a synthesis filterbank (2304) for synthesizing an audio intermediate signal (2306) from the input audio signal (2300), the input audio signal being represented by a plurality of first subband signals (2303) generated by an analysis filterbank (2302), wherein a number of filterbank channels of the synthesis filterbank (2304) is smaller than a number of channels of the analysis filterbank (2302). The apparatus furthermore comprises a further analysis filterbank (2307) for generating a plurality of second subband signals (2308) from the audio intermediate signal (2306), wherein the further analysis filterbank has a number of channels being different from the number of channels of the synthesis filterbank (2304), so that a sampling rate of a subband signal of the plurality of second subband signals (2308) is different from a sampling rate of a first subband signal of the plurality of first subband signals (2303).
摘要翻译：用于处理输入音频信号（2300）的装置依赖于级联的滤波器组，级联包括用于从输入音频信号（2300）合成音频中间信号（2306）的合成滤波器组（2304），输入音频信号为由分析滤波器组（2302）生成的多个第一子带信号（2303）表示，其中合成滤波器组（2304）的多个滤波器组信道小于分析滤波器组（2302）的信道数。该装置还包括用于从音频中间信号（2306）产生多个第二子带信号（2308）的另一分析滤波器组（2307），其中所述另外的分析滤波器组具有与所述音频中间信号合成滤波器组（2304），使得多个第二子带信号（2308）的子带信号的采样率与多个第一子带信号（2303）中的第一子带信号的采样率不同。

5. 发明申请

WO2011110496A1 APPARATUS AND METHOD FOR HANDLING TRANSIENT SOUND EVENTS IN AUDIO SIGNALS WHEN CHANGING THE REPLAY SPEED OR PITCH 审中-公开
标题翻译：在更换复印机速度或倾斜时在音频信号中处理瞬态声音事件的装置和方法
公开(公告)号：WO2011110496A1
公开(公告)日：2011-09-15
申请号：PCT/EP2011/053303
申请日：2011-03-04
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , DISCH, Sascha , NAGEL, Frederik , WILDE, Stephan
发明人： DISCH, Sascha , NAGEL, Frederik , WILDE, Stephan
IPC分类号： G10L21/02 , G10L21/04
CPC分类号： G10L21/038 , G10L19/025 , G10L21/04
摘要： An apparatus for processing an audio signal comprises an overlap-add stage for overlapping and adding blocks of a corresponding one of a plurality of subband signals using an overlap-add-advance value being different from a block extraction advance value. The apparatus further comprises a transient detector for detecting a transient in the audio signal or a subband signal of the plurality of subband signals. The overlap-add stage is configured for reducing an influence of a detected transient or for not using the detected transients when adding. The apparatus further comprises a transient adder for adding a detected transient to a subband signal generated by the overlap/add stage. A related method for processing an audio signal comprises, inter alia, either reducing an influence or discarding a detected transient when overlapping and adding.
摘要翻译：一种用于处理音频信号的装置包括：使用与块提取提前值不同的重叠加法值，来叠加和添加多个子带信号中相应的一个子带信号的块的重叠添加级。该装置还包括用于检测音频信号中的瞬态或多个子带信号的子带信号的瞬态检测器。重叠添加级被配置为减少检测到的瞬态的影响或者在添加时不使用检测到的瞬变。该装置还包括一个瞬态加法器，用于将检测到的瞬态值与由重叠/加法级产生的子带信号相加。用于处理音频信号的相关方法尤其包括在重叠和相加时减少影响或丢弃检测到的瞬变。

6. 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。

7. 发明申请

WO2014096279A1 GENERATION OF A COMFORT NOISE WITH HIGH SPECTRO-TEMPORAL RESOLUTION IN DISCONTINUOUS TRANSMISSION OF AUDIO SIGNALS 审中-公开
标题翻译：在不间断传输音频信号的情况下生成具有高光谱分辨率的舒适噪声
公开(公告)号：WO2014096279A1
公开(公告)日：2014-06-26
申请号：PCT/EP2013/077525
申请日：2013-12-19
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： LOMBARD, Anthony , DIETZ, Martin , WILDE, Stephan , RAVELLI, Emmanuel , SETIAWAN, Panji , MULTRUS, Markus
IPC分类号： G10L19/012
CPC分类号： G10L19/012 , G10L19/002 , G10L19/24
摘要： the invention provides an audio decoder being configured for decoding a bit- stream so as to produce therefrom an audio output signal, the bitstream comprising at least an active phase followed by at least an inactive phase, wherein the bitstream has encoded therein at least a silence insertion descriptor frame which describes a spectrum of a background noise, the audio decoder comprising: a silence insertion descriptor decoder configured to decode the silence insertion descriptor frame so as to reconstruct a spectrum of the background noise; a decoding device configured to reconstruct the audio output signal from the bitstream during the active phase; a spectral converter configured to determine a spectrum of the audio output signal a noise estimator device configured to determine a first spectrum of the noise of the audio output signal based on the spectrum of the audio output signal provided by the spectral converter, wherein the first spectrum of the noise of the audio output signal has a higher spectral resolution than the spectrum of the background noise; a resolution converter configured to establish a second spectrum of the noise of the audio output signal based on the first spectrum of the noise of the au- dio output signal, wherein the second spectrum of the noise of the audio output signal has a same spectral resolution as the spectrum of the background noise; a comfort noise spectrum estimation device having a scaling factor computing device configured to compute scaling factors for a spectrum for a comfort noise based on the spectrum of the background noise as provided by the silence insertion descriptor decoder and based on the second spectrum of the noise of the audio output signal as provided by the resolution converter and having a comfort noise spectrum generator configured to compute the spectrum for a comfort noise based on the scaling factors; and a comfort noise generator configured to produce the comfort noise during the inactive phase based on the spectrum for the comfort noise.
摘要翻译：本发明提供了一种音频解码器，其被配置用于对比特流进行解码以便从其产生音频输出信号，所述比特流至少包括一个活动相位，随后至少一个非活动阶段，其中该比特流至少在其中编码一个沉默插入描述符帧，其描述背景噪声的频谱，所述音频解码器包括：静音插入描述符解码器，被配置为解码所述静音插入描述符帧，以便重建所述背景噪声的频谱; 解码装置，被配置为在所述活动阶段期间重建来自所述比特流的所述音频输出信号; 频谱转换器，被配置为确定音频输出信号的频谱，噪声估计器装置被配置为基于由频谱转换器提供的音频输出信号的频谱来确定音频输出信号的噪声的第一频谱，其中第一频谱音频输出信号的噪声比背景噪声的频谱具有更高的频谱分辨率; 分辨率转换器，其被配置为基于所述自动输出信号的所述噪声的所述第一频谱建立所述音频输出信号的所述噪声的第二频谱，其中所述音频输出信号的所述噪声的所述第二频谱具有相同的光谱分辨率作为背景噪声的频谱; 舒适噪声谱估计装置，其具有比例因子计算装置，其被配置为基于由所述静音插入描述符解码器提供的所述背景噪声的频谱，基于所述噪声的第二频谱来计算用于舒适噪声的频谱的缩放因子，所述音频输出信号由所述分辨率转换器提供并具有舒适噪声谱发生器，其被配置为基于所述缩放因子来计算舒适噪声的频谱; 以及舒适噪声发生器，其被配置为基于用于舒适噪声的频谱在非活动阶段期间产生舒适噪声。

8. 发明申请

WO2016016146A1 APPARATUS AND METHOD FOR GENERATING AN ENHANCED SIGNAL USING INDEPENDENT NOISE-FILLING 审中-公开
标题翻译：使用独立的噪声填充产生增强信号的装置和方法
公开(公告)号：WO2016016146A1
公开(公告)日：2016-02-04
申请号：PCT/EP2015/067062
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）生成增强信号的设备，其中增强信号具有增强谱区域的谱值，增强谱区域的谱值不包含在输入中信号（600）包括用于将输入信号的源光谱区域映射到增强光谱区域中的目标区域的映射器（602），该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所述源谱区中的所述噪声填充区域（302）生成第一噪声值并且用于生成所述目标区域中的噪声区域的第二噪声值，其中，所述第二噪声值与第一噪声值解相关或用于生成目标区域中的噪声区域的第二噪声值，其中第二噪声值与源区域中的第一噪声值解相关。

9. 发明申请

WO2015086351A1 APPARATUS AND METHOD FOR DECODING AN ENCODED AUDIO SIGNAL WITH LOW COMPUTATIONAL RESOURCES 审中-公开
标题翻译：用于用低计算资源解码编码的音频信号的装置和方法
公开(公告)号：WO2015086351A1
公开(公告)日：2015-06-18
申请号：PCT/EP2014/076000
申请日：2014-11-28
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： NIEDERMEIER, Andreas , WILDE, Stephan , FISCHER, Daniel , HILDENBRAND, Matthias , GAYER, Marc , NEUENDORF, Max
IPC分类号： G10L19/24 , G10L19/20 , G10L21/038
CPC分类号： G10L19/22 , G10L19/022 , G10L19/167 , G10L19/20 , G10L19/24 , G10L21/038
摘要： An apparatus for decoding an encoded audio signal (101) comprising bandwidth extension control data indicating either a first harmonic bandwidth extension mode or a second non-harmonic bandwidth extension mode, comprises: an input interface (100) for receiving the encoded audio signal comprising the bandwidth extension control data indicating either the first harmonic bandwidth extension mode or the second non-harmonic bandwidth extension mode; a processor (102) for decoding the audio signal (101) using the second non-harmonic bandwidth extension mode; and a controller (104) for controlling the processor (102) to decode the audio signal using the second non-harmonic bandwidth extension mode, even when the bandwidth extension control data indicates the first harmonic bandwidth extension mode for the encoded signal.
摘要翻译：一种用于解码编码音频信号（101）的装置，包括指示第一谐波带宽扩展模式或第二非谐波带宽扩展模式的带宽扩展控制数据，包括：用于接收编码音频信号的输入接口（100），包括带宽扩展控制数据，指示第一谐波带宽扩展模式或第二非谐波带宽扩展模式; 用于使用第二非谐波带宽扩展模式对音频信号（101）进行解码的处理器（102）; 以及控制器（104），用于控制处理器（102）使用第二非谐波带宽扩展模式解码音频信号，即使当带宽扩展控制数据指示用于编码信号的第一谐波带宽扩展模式时。

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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