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71. 发明申请

WO2011104356A2 APPARATUS AND METHOD FOR MODIFYING AN AUDIO SIGNAL USING ENVELOPE SHAPING 审中-公开
标题翻译：使用信封形状修改音频信号的装置和方法
公开(公告)号：WO2011104356A2
公开(公告)日：2011-09-01
申请号：PCT/EP2011/052838
申请日：2011-02-25
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , DISCH, Sascha
发明人： DISCH, Sascha
IPC分类号： G10H1/08
CPC分类号： H03G3/00 , G10H1/08 , G10H1/20 , G10H3/125 , G10H2210/066 , G10H2250/031 , G10L21/00 , G10L25/18 , G10L25/90 , G10L2021/0135 , H03G5/00
摘要： An apparatus for modifying an audio signal comprises an envelope shape determiner, a filterbank processor, a signal processor, a combiner and an envelope shaper. The envelope shape determiner determines envelope shape coefficients based on the a frequency domain audio signal representing a time domain input audio signal and the filterbank processor generates a plurality of bandpass signals in a subband domain based on the frequency domain audio signal. Further the signal processor modifies a subband domain bandpass signal of the plurality of subband domain bandpass signals based on a predefined modification target. The combiner combines at least a subset of the plurality of subband domain bandpass signals containing the modified subband domain bandpass signal to obtain a time domain audio signal. Further, the envelope shaper shapes an envelope of the time domain audio signal based on the envelope shape coefficients, shapes an envelope of the plurality of subband domain bandpass signals containing the modified subband domain bandpass signal based on the envelope shape coefficients or shapes an envelope of the plurality of subband domain bandpass signals based on the envelope shape coefficients before a subband domain bandpass signal is modified by the signal processor to obtain a shaped audio signal.
摘要翻译：用于修改音频信号的装置包括包络形状确定器，滤波器组处理器，信号处理器，组合器和信封整形器。信封形状确定器基于表示时域输入音频信号的频域音频信号来确定包络形状系数，并且滤波器组处理器基于频域音频信号在子带域中产生多个带通信号。此外，信号处理器基于预定义的修改目标来修改多个子带域带通信号的子带域带通信号。组合器组合包含经修改的子带域带通信号的多个子带域带通信号的至少一个子集，以获得时域音频信号。此外，信封整形器基于包络形状系数来形成时域音频信号的包络，基于包络线形状系数对包含修改的子带域带通信号的多个子带域带通信号的包络进行整形，基于信号处理器修改子带域带通信号之前的包络形状系数的多个子带域带通信号，以获得成形音频信号。

72. 发明申请

WO2010108895A1 DEVICE AND METHOD FOR MANIPULATING AN AUDIO SIGNAL 审中-公开
标题翻译：用于操纵音频信号的装置和方法
公开(公告)号：WO2010108895A1
公开(公告)日：2010-09-30
申请号：PCT/EP2010/053720
申请日：2010-03-22
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , DISCH, Sascha , NAGEL, Frederik , NEUENDORF, Max , HELMRICH, Christian , ZORN, Dominik
发明人： DISCH, Sascha , NAGEL, Frederik , NEUENDORF, Max , HELMRICH, Christian , ZORN, Dominik
IPC分类号： G10L19/02 , G10L21/02
CPC分类号： G10L21/038 , G10L19/025 , G10L21/007
摘要： A device and method for manipulating an audio signal comprises a windower (102) for generating a plurality of consecutive blocks of audio samples, the plurality of consecutive blocks comprising at least one padded block of audio samples, the padded block having padded values and audio signal values, a first converter (104) for converting the padded block into a spectral representation having spectral values, a phase modifier (106) for modifying phases of the spectral values to obtain a modified spectral representation and a second converter (108) for converting the modified spectral representation into a modified time domain audio signal.
摘要翻译：用于操纵音频信号的装置和方法包括用于产生多个连续的音频采样块的加窗器（102），所述多个连续块包括至少一个填充的音频采样块，所述填充块具有填充值和音频信号值，用于将填充块转换成具有频谱值的频谱表示的第一转换器（104），用于修改频谱值的相位以获得修改的频谱表示的相位修改器（106）和用于转换将修改的频谱表示转换为修改的时域音频信号。

73. 发明申请

WO2010017967A1 AN APPARATUS FOR DETERMINING A SPATIAL OUTPUT MULTI-CHANNEL AUDIO SIGNAL 审中-公开
标题翻译：一种用于确定空间输出多通道音频信号的装置
公开(公告)号：WO2010017967A1
公开(公告)日：2010-02-18
申请号：PCT/EP2009/005828
申请日：2009-08-11
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , DISCH, Sascha , PULKKI, Ville , LAITINEN, Mikko-Ville , ERKUT, Cumhur
发明人： DISCH, Sascha , PULKKI, Ville , LAITINEN, Mikko-Ville , ERKUT, Cumhur
IPC分类号： H04S7/00
CPC分类号： H04S7/30 , H04S2400/11 , H04S2420/03
摘要： An apparatus (100) for determining a spatial output multichannel audio signal based on an input audio signal and an input parameter. The apparatus (100) comprises a decomposer (110) for decomposing the input audio signal based on the input parameter to obtain a first decomposed signal and a second decomposed signal different from each other. Furthermore, the apparatus (100) comprises a renderer (110) for rendering the first decomposed signal to obtain a first rendered signal having a first semantic property and for rendering the second decomposed signal to obtain a second rendered signal having a second semantic property being different from the first semantic property. The apparatus (100) comprises a processor (130) for processing the first rendered signal and the second rendered signal to obtain the spatial output multi-channel audio signal.
摘要翻译：一种用于基于输入音频信号和输入参数来确定空间输出多声道音频信号的装置（100）。装置（100）包括分解器（110），用于基于输入参数分解输入音频信号，以获得彼此不同的第一分解信号和第二分解信号。此外，装置（100）包括用于渲染第一分解信号以获得具有第一语义属性的第一渲染信号的渲染器（110），并且用于渲染第二分解信号以获得具有第二语义属性的第二渲染信号不同从第一个语义属性。装置（100）包括处理器（130），用于处理第一渲染信号和第二渲染信号以获得空间输出多声道音频信号。

74. 发明申请

WO2010003617A1 LOW BITRATE AUDIO ENCODING/DECODING SCHEME WITH COMMON PREPROCESSING 审中-公开
标题翻译：低分辨率音频编码/解码方案与通用预处理
公开(公告)号：WO2010003617A1
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004873
申请日：2009-07-06
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , GRILL, Bernhard , BAYER, Stefan , FUCHS, Guillaume , GEYERSBERGER, Stefan , GEIGER, Ralf , HILPERT, Johannes , KRAEMER, Ulrich , LECOMTE, Jeremie , MULTRUS, Markus , NEUENDORF, Max , POPP, Harald , RETTELBACH, Nikolaus , NAGEL, Frederik , DISCH, Sascha , HERRE, Juergen , YOKOTANI, Yoshikazu , WABNIK, Stefan , SCHULLER, Gerald , HIRSCHFELD, Jens
发明人： GRILL, Bernhard , BAYER, Stefan , FUCHS, Guillaume , GEYERSBERGER, Stefan , GEIGER, Ralf , HILPERT, Johannes , KRAEMER, Ulrich , LECOMTE, Jeremie , MULTRUS, Markus , NEUENDORF, Max , POPP, Harald , RETTELBACH, Nikolaus , NAGEL, Frederik , DISCH, Sascha , HERRE, Juergen , YOKOTANI, Yoshikazu , WABNIK, Stefan , SCHULLER, Gerald , HIRSCHFELD, Jens
IPC分类号： G10L19/14
CPC分类号： G10L19/173 , G10L19/0017 , G10L19/008 , G10L19/0212 , G10L19/18 , G10L2019/0008
摘要： An audio encoder comprises a common preprocessing stage (100), an information sink based encoding branch (400) such as spectral domain encoding branch, a information source based encoding branch (500) such as an LPC-domain encoding branch and a switch (200) for switching between these branches at inputs into these branches or outputs of these branches controlled by a decision stage (300). An audio decoder comprises a spectral domain decoding branch, an LPC- domain decoding branch, one or more switches for switching between the branches and a common post-processing stage for post-processing a time-domain audio signal for obtaining a post-processed audio signal.
摘要翻译：音频编码器包括公共预处理级（100），诸如频域编码分支的基于信息集合的编码分支（400），诸如LPC域编码分支的信息源编码分支（500）和开关（200 ），用于在由决策阶段（300）控制的这些分支的这些分支或输出的输入处在这些分支之间切换。音频解码器包括频域解码分支，LPC域解码分支，用于在分支之间切换的一个或多个开关和用于后处理时域音频信号以用于获得后处理音频的公共后处理级信号。

75. 发明申请

WO2007110101A1 ENHANCED METHOD FOR SIGNAL SHAPING IN MULTI-CHANNEL AUDIO RECONSTRUCTION 审中-公开
标题翻译：用于多声道音频重建中的信号形成的增强方法
公开(公告)号：WO2007110101A1
公开(公告)日：2007-10-04
申请号：PCT/EP2006/004732
申请日：2006-05-18
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , DISCH, Sascha , LINZMEIER, Karsten , HERRE, Jürgen , POPP, Harald
发明人： DISCH, Sascha , LINZMEIER, Karsten , HERRE, Jürgen , POPP, Harald
IPC分类号： H04S1/00 , H04S3/00
CPC分类号： H04S3/002 , G10L19/008 , G10L19/26 , H04R2217/03 , H04S3/02 , H04S2420/03
摘要： A reconstructed output channel, reconstructed with a multi-channel reconstructor using at least one downmix channel derived by downmixing a plurality of original channels and using a parameter representation including additional information on a temporal fine structure of an original channel can be generated using a generator (32) for generating a direct signal component (42) and a diffuse signal component (44) based on the downmix channel (38) is used. Only the direct signal component (42) is modified (34) such that the temporal (40) fine structure of the reconstructed output channel is fitting a desired temporal fine structure, indicated by the additional information on the temporal fine structure transmitted.
摘要翻译：使用由多个原始信道进行降混得到的至少一个下混频道并使用包括关于原始信道的时间精细结构的附加信息的参数表示的多信道重构器重建的重建输出信道可以使用发生器 32），用于基于下混通道（38）产生直接信号分量（42）和扩散信号分量（44）。只有直接信号分量（42）被修改（34），使得重建的输出信道的时间（40）精细结构适合由关于发送的时间精细结构的附加信息指示的期望的时间精细结构。

76. 发明申请

WO2006005390A1 APPARATUS AND METHOD FOR GENERATING A MULTI-CHANNEL OUTPUT SIGNAL 审中-公开
标题翻译：用于产生多通道输出信号的装置和方法
公开(公告)号：WO2006005390A1
公开(公告)日：2006-01-19
申请号：PCT/EP2005/005199
申请日：2005-05-12
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , AGERE SYSTEMS INC. , HERRE, Jürgen , FALLER, Christof , DISCH, Sascha , HILPERT, Johannes
发明人： HERRE, Jürgen , FALLER, Christof , DISCH, Sascha , HILPERT, Johannes
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , H04S3/00 , H04S2420/03
摘要： An apparatus for generating a multi-channel output signal performs a center channel cancellation to obtain improved base channels for reconstructing left-side output channels or right-side output channels. In particular, the apparatus includes a cancellation channel calculator (20) for calculating a cancellation channel using information related to the original center channel available at the decoder. The device furthermore includes a combiner (22) for combining a transmission channel with the cancellation channel. Finally, the apparatus includes a reconstructor (26) for generating the multi-channel output signal. Due to the center channel cancellation, the channel reconstructor (26) not only uses a different base channel for reconstructing the center channel but also uses base channels different from the transmission channels for reconstructing left and right output channels which have a reduced or even completely cancelled influence of the original center channel.
摘要翻译：用于产生多通道输出信号的装置执行中心信道消除以获得用于重建左侧输出信道或右侧输出信道的改进的基本信道。特别地，该装置包括消除信道计算器（20），用于使用与解码器可用的原始中心信道相关的信息来计算消除信道。该装置还包括用于将传输信道与消除信道组合的组合器（22）。最后，该装置包括用于产生多声道输出信号的重构器（26）。由于中心信道消除，信道重建器（26）不仅使用不同的基本信道来重构中心信道，而且还使用与传输信道不同的基本信道来重构具有减少甚至完全取消的左右输出信道影响原中心频道。

77. 发明申请

WO2020127900A1 APPARATUS AND METHOD FOR SOURCE SEPARATION USING AN ESTIMATION AND CONTROL OF SOUND QUALITY 审中-公开
公开(公告)号：WO2020127900A1
公开(公告)日：2020-06-25
申请号：PCT/EP2019/086565
申请日：2019-12-20
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： UHLE, Christian , TORCOLI, Matteo , DISCH, Sascha , PAULUS, Jouni , HERRE, Jürgen , HELLMUTH, Oliver , FUCHS, Harald
IPC分类号： G10L21/0308 , G10L25/30 , G10L25/60
摘要： An apparatus for generating a separated audio signal from an audio input signal is provided. The audio input signal comprises a target audio signal portion and a residual audio signal portion. The residual audio signal portion indicates a residual between the audio input signal and the target audio signal portion. The apparatus comprises a source separator (110), a determining module (120) and a signal processor (130). The source separator (110) is configured to determine an estimated target signal which depends on the audio input signal, the estimated target signal being an estimate of a signal that only comprises the target audio signal portion. The determining module (120) is configured to determine one or more result values depending on an estimated sound quality of the estimated target signal to obtain one or more parameter values, wherein the one or more parameter values are the one or more result values or depend on the one or more result values. The signal processor (130) is configured to generate the separated audio signal depending on the one or more parameter values and depending on at least one of the estimated target signal and the audio input signal and an estimated residual signal, the estimated residual signal being an estimate of a signal that only comprises the residual audio signal portion.

78. 发明申请

WO2018177612A1 APPARATUS AND METHOD FOR DETERMINING A PREDETERMINED CHARACTERISTIC RELATED TO A SPECTRAL ENHANCEMENT PROCESSING OF AN AUDIO SIGNAL 审中-公开
公开(公告)号：WO2018177612A1
公开(公告)日：2018-10-04
申请号：PCT/EP2018/025083
申请日：2018-03-29
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNI VERSITÄT ERLANGEN-NÜRNBERG
发明人： GAMPP, Patrick , UHLE, Christian , DISCH, Sascha , KARAMPOURNIOTIS, Antonios , HAVENSTEIN, Julia , HELLMUTH, Oliver , HERRE, Jürgen , PROKEIN, Peter
IPC分类号： G10L25/69 , G10L21/038
摘要： An apparatus for determining a predetermined characteristic related to a spectral enhancement processing of an audio signal comprises a deriver configured for obtaining a spectrum of the audio signal and for deriving a local maximum signal from the spectrum. The apparatus comprises a determiner configured for determining a similarity between segments of the local maximum signal and comprises a processor for providing an information indicating that the audio signal comprises the predetermined characteristic dependent on an evaluation of the similarity.

79. 发明申请

WO2018091614A1 APPARATUS AND METHOD FOR DECOMPOSING AN AUDIO SIGNAL USING A RATIO AS A SEPARATION CHARACTERISTIC 审中-公开
公开(公告)号：WO2018091614A1
公开(公告)日：2018-05-24
申请号：PCT/EP2017/079516
申请日：2017-11-16
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： ADAMI, Alexander , HERRE, Jürgen , DISCH, Sascha , GHIDO, Florin
IPC分类号： G10L21/028 , G10L19/008
摘要： An apparatus for decomposing an audio signal (100) into a background component signal (140) and a foreground component signal (150), comprises: a block generator (110) for generating a time sequence of blocks of audio signal values; an audio signal analyzer (120) for determining a block characteristic of a current block of the audio signal and for determining an average characteristic for a group of blocks, the group of blocks comprising at least two blocks; and a separator (130) for separating the current block into a background portion and a foreground portion in response to a ratio of the block characteristic of the current block and the average characteristic of the group of blocks, wherein the background component signal (140) comprises the background portion of the current block and the foreground component signal (150) comprises the foreground portion of the current block.

80. 发明申请

WO2016016121A1 APPARATUS AND METHOD FOR PROCESSING AN AUDIO SIGNAL USING A HARMONIC POST-FILTER 审中-公开
标题翻译：使用谐波后置滤波器处理音频信号的装置和方法
公开(公告)号：WO2016016121A1
公开(公告)日：2016-02-04
申请号：PCT/EP2015/066998
申请日：2015-07-24
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： RAVELLI, Emmanuel , HELMRICH, Christian , MARKOVIC, Goran , NEUSINGER, Matthias , DISCH, Sascha , JANDER, Manuel , DIETZ, Martin
IPC分类号： G10L19/26 , G10L21/02
CPC分类号： G10L19/26 , G10L19/0212 , G10L19/025 , G10L21/02
摘要： An apparatus for processing an audio signal having associated therewith a pitch lag information and a gain information, comprises a domain converter (100) for converting a first domain epresentation of the audio signal into a second domain representation of the audio signal; and a harmonic post-filter (104) for filtering the second domain representation of the audio signal, wherein the post-filter is based on a transfer function comprising a numerator and a denominator, wherein the numerator comprises a gain value indicated by the gain information, and wherein the denominator comprises an integer part of a pitch lag indicated by the pitch lag information and a multi-tap filter depending on a fractional part of the pitch lag.
摘要翻译：一种用于处理与之相关的音调信号的音调信号和增益信息的装置，包括用于将音频信号的第一域表示转换成音频信号的第二域表示的域转换器（100）以及用于滤波音频信号的第二域表示的谐波后置滤波器（104），其中后置滤波器基于包括分子和分母的传递函数，其中分子包括由增益信息指示的增益值，并且其中分母包括由音调滞后信息指示的音调滞后的整数部分和取决于音调滞后的分数部分的多抽头滤波器。

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