公开(公告)号：EP2941771A1

公开(公告)日：2015-11-11

申请号：EP14802914.3

申请日：2014-11-27

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

发明人： PAULUS, Jouni ,  DISCH, Sascha ,  FUCHS, Harald ,  GRILL, Bernhard ,  HELLMUTH, Oliver ,  MURTAZA, Adrian ,  RIDDERBUSCH, Falko ,  TERENTIV, Leon

IPC分类号： G10L19/008

CPC分类号： G10L19/008 ,  G10L19/265 ,  H03G3/20

摘要： A decoder for generating an audio output signal comprising one or more audio output channels is provided. The decoder comprises a receiving interface (110) for receiving an audio input signal comprising a plurality of audio object signals, for receiving loudness information on the audio object signals, and for receiving rendering information indicating whether one or more of the audio object signals shall be amplified or attenuated. Moreover, the decoder comprises a signal processor (120) for generating the one or more audio output channels of the audio output signal. The signal processor (120) is configured to determine a loudness compensation value depending on the loudness information and depending on the rendering information. Furthermore, the signal processor (120) is configured to generate the one or more audio output channels of the audio output signal from the audio input signal depending on the rendering information and depending on the loudness compensation value. Moreover, an encoder is provided.

摘要翻译： 提供了一种用于产生包括一个或多个音频输出通道的音频输出信号的解码器。 解码器包括接收接口（110），用于接收包括多个音频对象信号的音频输入信号，用于接收关于音频对象信号的响度信息，并且用于接收指示音频对象信号中的一个或多个是否为 放大或减弱。 此外，解码器包括用于产生音频输出信号的一个或多个音频输出声道的信号处理器（120）。 信号处理器（120）被配置为根据响度信息和取决于渲染信息来确定响度补偿值。 此外，信号处理器（120）被配置为根据呈现信息并根据响度补偿值从音频输入信号产生音频输出信号的一个或多个音频输出声道。 此外，提供了一种编码器。

公开(公告)号：EP2896221A1

公开(公告)日：2015-07-22

申请号：EP13765670.8

申请日：2013-09-12

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

发明人： BORSUM, Arne ,  SCHREINER, Stephan ,  FUCHS, Harald ,  KRATZ, Michael ,  GRILL, Bernhard ,  SCHARRER, Sebastian

IPC分类号： H04S3/00

CPC分类号： G10L19/008 ,  G10L19/02 ,  G10L19/173 ,  H04S3/002 ,  H04S3/02 ,  H04S5/005 ,  H04S2400/03 ,  H04S2400/11 ,  H04S2420/03

摘要： An apparatus (100) for downmixing three or more audio input channels to obtain two or more audio output channels is provided. The apparatus (100) comprises a receiving interface (110) for receiving the three or more audio input channels and for receiving side information. Moreover, the apparatus (100) comprises a downmixer (120) for downmixing the three or more audio input channels depending on the side information to obtain the two or more audio output channels. The number of the audio output channels is smaller than the number of the audio input channels. The side information indicates a characteristic of at least one of the three or more audio input channels, or a characteristic of one or more sound waves recorded within the one or more audio input channels, or a characteristic of one or more sound sources which emitted one or more sound waves recorded within the one or more audio input channels.

摘要翻译： 提供了一种用于将三个或更多个音频输入通道进行混合以获得两个或多个音频输出通道的装置。 该装置包括用于接收三个或更多音频输入通道和用于接收侧信息的接收接口。 此外，该装置包括用于根据侧面信息对三个或更多个音频输入通道进行混合以获得两个或更多个音频输出通道的降混器。 音频输出通道的数量小于音频输入通道的数量。 侧面信息表示三个或更多个音频输入通道中的至少一个或记录在一个或多个音频输入通道内的一个或多个声波的特性，或一个或多个声源的特性，发出一个 或更多的声波记录在一个或多个音频输入通道内。

公开(公告)号：EP2708042A1

公开(公告)日：2014-03-19

申请号：EP12720155.6

申请日：2012-05-08

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

发明人： WALTHER, Andreas ,  SILZLE, Andreas ,  HELLMUTH, Oliver ,  GRILL, Bernhard ,  POPP, Harald

IPC分类号： H04S3/00

CPC分类号： H04S3/006 ,  H04S3/008

摘要： An apparatus for generating an output signal having at least two output channels from an input signal having at least two input channels. The apparatus comprises an ambient/direct decomposer (110; 210; 310; 410; 610), an ambient modification unit (120; 220; 320; 420) and a combination unit (130; 230; 330; 430). The ambient/direct decomposer (110; 210; 310; 410; 610) is adapted to decompose at least two input channels of the input signal such that each one of the at least two input channels is decomposed into a signal of a first signal group and into a signal of a second signal group. The ambient modification unit (120; 220; 320, 420) is adapted to modify a signal of the ambient signal group or a signal derived from a signal of the ambient signal group to obtain a modified signal as a first output channel. The combination unit (130; 230; 330; 430) is adapted to combine a signal of the ambient signal group or a signal derived from a signal of the ambient signal group and a signal of the direct, signal group or a signal derived from a signal of the direct signal group as a second output channel.

摘要翻译： 在具有从输入的至少两个输出通道具有至少两个输入通道的信号的输出信号生成装置。 在环境修改单元，该装置包括在环境/直接分解（610 110; 210; 310; 410）（120; 220; 320; 420）和一个组合单元（130; 230; 330; 430）。 （110; 210; 310; 410; 610）的环境/直接分解是angepasst分解输入信号搜索中的至少两个输入通道并在所述至少两个输入通道中的每一个被分解为第一信号组的信号 并进入第二信号组的信号。 环境修改单元（120; 220; 320，420）适于修改所述环境信号组的信号或从该环境信号组的信号导出，以获得修改的信号作为第一输出信道的信号。 组合单元（130; 230; 330; 430）是angepasst于环境信号组的信号，或者根据从导出的环境信号组的信号和直接，信号组的信号或信号导出的信号组合 该直接信号组作为第二输出信道的信号。

公开(公告)号：EP2297856A1

公开(公告)日：2011-03-23

申请号：EP09776891.5

申请日：2009-06-30

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

发明人： MULTRUS, Markus ,  RETTELBACH, Nikolaus ,  BAYER, Stefan ,  GRILL, Bernhard ,  JANDER, Manuel

IPC分类号： H03M7/30

CPC分类号： H03M7/3088

摘要： In a method for encoding a symbol it is determined whether the symbol can be encoded by a codeword of a first code- book. In case this is true, the appropriate codeword for the symbol is selected from the first codebook. Otherwise, a codeword is selected from the first codebook indicating that the symbol cannot be encoded by a codeword of the first codebook and the symbol is split into a plurality of first sub-symbols and for at least one of the first sub- symbols a codeword is selected from a second codebook. Also a corresponding method for decoding is described.

摘要翻译： 在用于编码的符号的方法它是确定性的采空是否符号可以通过第一码本的码字进行编码。 在情况下，这是真实的，对于符号适当的代码字被从第一码本中选择。 否则，一个码字从所述第一码本指示没有符号不能由所述第一码本的码字进行编码，而符号被分成第一子符号的多元化和用于所述第一子符号中的至少一个码字中选择 从第二码本中选择。 这样描述了一种用于解码的相应方法。

公开(公告)号：EP2269189A1

公开(公告)日：2011-01-05

申请号：EP10712439.8

申请日：2010-04-01

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

发明人： NAGEL, Frederik ,  NEUENDORF, Max ,  RETTELBACH, Nikolaus ,  LECOMTE, Jérémie ,  MULTRUS, Markus ,  GRILL, Bernhard

IPC分类号： G10L21/02

CPC分类号： G10L19/008 ,  G10L19/18 ,  G10L21/038

摘要： An apparatus for generating a representation of a bandwidth-extended signal on the basis of an input signal representation comprises a phase vocoder configured to obtain values of a spectral domain representation of a first patch of the bandwidth-extended signal on the basis of the input signal representation. The apparatus also comprises a value copier configured to copy a set of values of the spectral domain representation of the first patch, which values are provided by the phase vocoder, to obtain a set of values of a spectral domain representation of a second patch, wherein the second patch is associated with higher frequencies than the first patch. The apparatus is configured to obtain the representation of the bandwidth-extended signal using the values of the spectral domain representation of the first patch and the values of the spectral domain representation of the second patch.

公开(公告)号：EP1994530B1

公开(公告)日：2009-07-01

申请号：EP07819260.6

申请日：2007-10-23

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

发明人： SCHNELL, Markus ,  LUTZKY, Manfred ,  LOHWASSER, Markus ,  SCHMIDT, Markus ,  GAYER, Marc ,  MELLAR, Michael ,  EDLER, Bernd ,  MULTRUS, Markus ,  SCHULLER, Gerald ,  GEIGER, Ralf ,  GRILL, Bernhard

IPC分类号： G10L19/02 ,  H03H17/02

CPC分类号： G10L19/0204 ,  G10L19/022 ,  G10L21/038 ,  G10L25/45 ,  H03H17/0266

公开(公告)号：EP1825356A2

公开(公告)日：2007-08-29

申请号：EP05850069.5

申请日：2005-12-13

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

发明人： GAYER, Marc ,  LUTZKY, Manfred ,  LOHWASSER, Markus ,  DISCH, Sascha ,  HILPERT, Johannes ,  GEYERSBERGER, Stefan ,  GRILL, Bernhard

IPC分类号： G06F7/544

CPC分类号： G06F7/544 ,  G06F7/49936 ,  G06F7/49942 ,  G06F7/5443 ,  G10L19/02

摘要： Transition to the logarithmic range does not require the entire bit range of the result that is linearly dependent on the square of the value. Rather, for a value having x bits, the result can be scaled in such a manner that a representation with less than x bits of the result is sufficient to obtain the logarithmic representation based thereon. The effect of the scaling factor on the resulting logarithmic representation can be cancelled by adding a correction value obtained by using the logarithmic function on the scaling factor to or subtracting it from the scaled logarithmic function without dynamic loss. The invention provides a method and a device for producing a representation of a calculation result that is linearly dependent on the square of a value, thereby allowing to carry out the calculation easily or with little hardware.

公开(公告)号：EP1464046B1

公开(公告)日：2005-03-30

申请号：EP02806018.4

申请日：2002-12-11

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

发明人： LINZMEIER, Karsten ,  RETTELBACH, Nikolaus ,  ALLAMANCHE, Eric ,  GRILL, Bernhard

IPC分类号： G10L19/00 ,  H04N7/26 ,  H04B1/66

CPC分类号： G10L19/02 ,  H04B1/66

摘要： The invention relates to a scalable coder that comprises a first coding device (102), a decoding device (104) and a second coding device (114). Said coder is furthermore provided with a phase distorter (10a, 10b), for reducing a non-linear frequency-dependent phase distortion which is introduced by the first coding device (102) and/or the decoding device (104) and which causes an increased differential mode signal in a comparative device (110). A low-power differential signal is obtained which can code the second coding device (114) with less bits, that is with a higher bit efficiency.

公开(公告)号：EP1005695B1

公开(公告)日：2001-07-11

申请号：EP98937484.8

申请日：1998-06-15

申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.

发明人： HILPERT, Johannes ,  HERRE, Jürgen ,  GRILL, Bernhard ,  BUCHTA, Rainer ,  BRANDENBURG, Karlheinz ,  GERHÄUSER, Heinz

IPC分类号： G11B20/00

CPC分类号： H04B1/665

公开(公告)号：EP0846375B1

公开(公告)日：1999-08-25

申请号：EP96930044.1

申请日：1996-08-16

申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.

发明人： GRILL, Bernhard ,  BRANDENBURG, Karlheinz ,  SEITZER, Dieter

IPC分类号： H04B1/66

CPC分类号： H04B1/665

摘要： When an audio signal is coded, coded signals of inferior quality and bit-rate as well as coded signals of high quality and bit-rate are transmitted to a decoder. The low-bit-rate audio signal is coded and transmitted to the decoder first, before a further coded signal is transmitted to the decoder and either alone or together with the first coded signal produces a high-quality decoded signal within the decoder during decoding. This results first in a low-quality decoded signal in the decoder before decoding of the high-quality signal becomes possible.