公开(公告)号：EP2544465A1

公开(公告)日：2013-01-09

申请号：EP11186715.6

申请日：2011-10-26

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： Uhle, Christian ,  Finauer, Stefan ,  Gampp, Patrick ,  Hellmuth, Oliver ,  Prokein, Peter ,  Stöcklmeier, Christian

IPC分类号： H04S3/00

CPC分类号： H04S1/00 ,  H04S1/002 ,  H04S3/002

摘要： An apparatus for generating a stereo side signal having a first side channel and a second side channel from a stereo input signal having a first input channel and a second input channel is provided. The apparatus comprises a modification information generator (110) for generating modification information based on mid-side information. Furthermore, the apparatus comprises a signal manipulator (120) being adapted to manipulate the first input channel based on the modification information to obtain the first side channel and being adapted to manipulate the second input channel based on the modification information to obtain the second side channel. The modification information generator (110) comprises a spectral weights generator (116) for generating the modification information by generating a first spectral weighting factor based on a mono mid signal and on a mono side signal of the stereo input signal.

摘要翻译： 提供了一种用于产生具有从具有第一输入通道和一个第二输入通道立体声输入信号的第一侧信道和第二侧通道立体声侧信号的装置。 该设备包括用于基于中侧信息修改信息的修改信息生成器（110）。 进一步，该装置包括一个信号操纵器（120）angepasst操纵基于该修改信息，以获得所述第一侧信道的第一输入通道和被angepasst操纵基于修改信息的第二输入信道以获得第二侧信道 ， 修改信息生成器（110）包括用于产生通过基于单声道中间信号和所述立体声输入信号的单侧信号的第一频谱权重因子修改的信息的谱权重产生器（116）。

公开(公告)号：EP2381574B1

公开(公告)日：2014-12-03

申请号：EP10160679.6

申请日：2010-04-22

申请人： Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V.

发明人： Uhle, Christian ,  Herre, Juergen ,  Hellmuth, Oliver ,  Finauer, Stefan

IPC分类号： G10L25/69 ,  G10L21/0264 ,  H03G9/00 ,  H03G9/02 ,  G10L21/02 ,  G10L21/00

CPC分类号： G10L21/00 ,  G10L21/0264 ,  G10L21/0364 ,  G10L25/69 ,  H03G9/005 ,  H03G9/025

摘要： An apparatus for modifying an input audio signal comprises an excitation determiner, a storage device and a signal modifier. The excitation determiner determines a value of an excitation parameter of a subband of a plurality of subbands of the input audio signal based on an energy content of the subband. Further, the storage device stores a lookup table containing a plurality of spectral weighting factors. A spectral weighting factor of the plurality of spectral weighting factors is associated to a predefined value of the excitation parameter and a subband of the plurality of subbands. The storage device provides a spectral weighting factor corresponding to the determined value of the excitation parameter and corresponding to the subband, the value of the excitation parameter is determined for. Further, the signal modifier modifies a content of the subband of the audio signal, the value of the excitation parameter is determined for, based on the provided spectral weighting factor to provide a modified subband.

公开(公告)号：EP2523472A1

公开(公告)日：2012-11-14

申请号：EP11173101.4

申请日：2011-07-07

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： Stöcklmeier, Christian ,  Finauer, Stefan ,  Uhle, Christian ,  Prokein, Peter ,  Hellmuth, Oliver ,  Heise, Ulrik

IPC分类号： H04S1/00 ,  H04S5/00

CPC分类号： H04R5/00 ,  H04S1/007 ,  H04S5/005 ,  H04S2400/05

摘要： An apparatus for generating a stereo output signal comprises a manipulation information generator (110; 210; 340; 440; 640) being adapted to generate manipulation information depending on a first signal indication value of a first input channel and on a second signal indication value of a second input channel, and a manipulator (120; 220; 360, 370; 460, 470; 660, 670) for manipulating a combination signal based on the manipulation information to obtain a first manipulated signal as a first output channel and a second manipulated signal as a second output channel. The combination signal is a signal derived by combining the first input channel and the second input channel. Furthermore, the manipulator (120; 220; 360, 370; 460, 470; 660, 670) is configured for manipulating the combination signal in a first manner, when the first signal indication value is in a first relation to the second signal indication value, or in a different second manner, when the first signal indication value is in a different second relation to the second signal indication value.

摘要翻译： 用于产生立体声输出信号的装置包括：一个操作信息生成器（110; 210; 340; 440; 640）是angepasst以生成操作信息取决于第一输入信道的第一信号指示值和上的第二信号指示值 一个第二输入信道，和一个操纵器（120; 220; 360,370; 460，470; 660，670），用于基于所述操作信息，以获得第一处理的信号作为第一输出信道和第二操纵操纵的组合信号 信号作为第二输出通道。 该组合信号是通过组合所述第一输入通道和第二输入通道导出的信号。 进一步，操纵器（120; 220; 360,370; 460，470; 660，670）被配置为以第一方式操纵所述组合信号，当第一信号指示值是在第一相对于第二信号指示值 或在不同的第二方式中，当第一信号指示值是在不同的第二相对于第二信号指示值。

公开(公告)号：EP2544466A1

公开(公告)日：2013-01-09

申请号：EP11186719.8

申请日：2011-10-26

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： Uhle, Christian ,  Finauer, Stefan ,  Gampp, Stefan ,  Hellmuth, Oliver ,  Stocklmeier, Christian ,  Prokein, Peter

IPC分类号： H04S3/00

CPC分类号： H04S1/00 ,  H04S1/002 ,  H04S3/002

摘要： An apparatus for generating a stereo side signal having a first side channel and a second side channel from a stereo input signal having a first input channel and a second input channel is provided. The apparatus comprises a modification information generator (110) for generating modification information based on mid-side information. Furthermore, the apparatus comprises a signal manipulator (120) being adapted to manipulate the first input channel based on the modification information to obtain the first side channel and being adapted to manipulate the second input channel based on the modification information to obtain the second side channel. The modification information generator (110) comprises a spectral subtractor (115) for generating the modification information by generating a difference value indicating a difference between a mono mid signal or a mono side signal of the stereo input signal and the first or the second input channel.

摘要翻译： 提供了一种用于产生具有从具有第一输入通道和一个第二输入通道立体声输入信号的第一侧信道和第二侧通道立体声侧信号的装置。 该设备包括用于基于中侧信息修改信息的修改信息生成器（110）。 进一步，该装置包括一个信号操纵器（120）angepasst操纵基于该修改信息，以获得所述第一侧信道的第一输入通道和被angepasst操纵基于修改信息的第二输入信道以获得第二侧信道 ， 修改信息生成器（110）包括一个谱减法器（115），用于通过产生一个差值，它指示单声道的中间信号或立体声输入信号的单端信号和第一或第二输入通道之间的差产生的修改信息 ，

公开(公告)号：EP2381574A1

公开(公告)日：2011-10-26

申请号：EP10160679.6

申请日：2010-04-22

申请人： Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V.

发明人： Uhle, Christian ,  Herre, Juergen ,  Hellmuth, Oliver ,  Finauer, Stefan

IPC分类号： H03G3/32 ,  H04S7/00 ,  G10L21/00 ,  G10L21/02

CPC分类号： G10L21/00 ,  G10L21/0264 ,  G10L21/0364 ,  G10L25/69 ,  H03G9/005 ,  H03G9/025

摘要： An apparatus for modifying an input audio signal comprises an excitation determiner, a storage device and a signal modifier. The excitation determiner determines a value of an excitation parameter of a subband of a plurality of subbands of the input audio signal based on an energy content of the subband. Further, the storage device stores a lookup table containing a plurality of spectral weighting factors. A spectral weighting factor of the plurality of spectral weighting factors is associated to a predefined value of the excitation parameter and a subband of the plurality of subbands. The storage device provides a spectral weighting factor corresponding to the determined value of the excitation parameter and corresponding to the subband, the value of the excitation parameter is determined for. Further, the signal modifier modifies a content of the subband of the audio signal, the value of the excitation parameter is determined for, based on the provided spectral weighting factor to provide a modified subband.

摘要翻译： 用于修改输入音频信号的装置包括激励确定器，存储装置和信号调节器。 激励确定器基于子带的能量含量来确定输入音频信号的多个子带的子带的激励参数的值。 此外，存储装置存储包含多个频谱加权因子的查找表。 多个频谱加权因子的频谱加权因子与激励参数的预定值和多个子带中的子带相关联。 存储装置提供对应于确定的激励参数值并对应于子带的频谱加权因子，确定激励参数的值。 此外，信号修改器修改音频信号的子带的内容，基于所提供的频谱加权因子来确定激励参数的值以提供修改的子带。