公开(公告)号：EP2830334A1

公开(公告)日：2015-01-28

申请号：EP13189345.5

申请日：2013-10-18

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Friedrich-Alexander-Universität Erlangen-Nürnberg

发明人： Disch, Sascha ,  Fuchs, Harald ,  Hellmuth, Oliver ,  Herre, Jürgen ,  Murtaza, Adrian ,  Paulus, Jouni ,  Ridderbusch, Falko ,  Terentiv, Leon

IPC分类号： H04S3/00 ,  G10L19/008

CPC分类号： H04S3/02 ,  G10L19/008 ,  G10L19/032 ,  G10L19/20 ,  G10L19/22 ,  G10L19/265 ,  H04S3/008 ,  H04S2400/03 ,  H04S2400/11 ,  H04S2420/03

摘要： A multi-channel audio decoder for providing at least two output audio signals on the basis of an encoded representation is configured to render a plurality of decoded audio signals, which are obtained on the basis of the encoded representation, in dependence on one or more rendering parameters, to obtain a plurality of rendered audio signals. The multichannel audio decoder is configured to derive one or more decorrelated audio signals from the rendered audio signals, and to combine the rendered audio signals, or a scaled version thereof, with the one or more decorrelated audio signals, to obtain the output audio signals. A multi-channel audio encoder provides a decorrelation method parameter to control an audio decoder.

摘要翻译： 用于编码表示的基础上，提供至少两个输出音频信号的多声道音频解码器被配置以使解码的音频信号，它们是在依赖一种或多种呈现编码表示的基础上获得的多元 参数，以获得再现的音频信号的复数。 该多通道音频解码器被配置为从所呈现的音频信号的一个或多个解相关的音频信号，并且向呈现的音频信号，或缩放版本及其结合，与所述一个或更多个解相关的音频信号，以获得输出音频信号。 一种多通道音频编码器提供去相关方法的参数来控制音频解码器。

公开(公告)号：EP2830332A2

公开(公告)日：2015-01-28

申请号：EP13189249.9

申请日：2013-10-18

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Friedrich-Alexander-Universität Erlangen-Nürnberg

发明人： Herre, Jürgen ,  Küch, Fabian ,  Kuntz, Achim ,  Kraftschmer, Michael ,  Faller, Christoph

IPC分类号： H04S3/00 ,  H04S7/00 ,  G10L19/008

CPC分类号： H04S7/303 ,  G10L19/008 ,  H04R5/02 ,  H04S3/002 ,  H04S3/02 ,  H04S7/30 ,  H04S7/302 ,  H04S7/305 ,  H04S7/308 ,  H04S2400/01 ,  H04S2400/03 ,  H04S2420/03

摘要： A method for mapping a plurality of input channels of an input channel configuration to output channels of an output channel configuration comprises providing a set of rules associated with each input channel of the plurality of input channels, wherein the rules define different mappings between the associated input channel and a set of output channels. For each input channel of the plurality of input channels, a rule associated with the input channel is accessed, determination is made whether the set of output channels defined in the accessed rule is present in the output channel configuration, and the accessed rule is selected if the set of output channels defined in the accessed rule is present in the output channel configuration. The input channels are mapped to the output channels according to the selected rule.

摘要翻译： 一种用于绘制的输入信道配置到一个输出信道配置的输出通道的输入信道与多个包括提供一组与输入信道的多个每个输入通道相关联的规则，worin规则方法定义相关联的输入之间的不同映射 信道和一组输出通道。 对于输入信道的多个每个输入通道，与所述输入通道相关联的规则被访问时，确定是否设定在所访问的规则定义的输出信道的存在于输出信道的配置，和所访问的规则被选择的，如果 该组中被访问的规则定义的输出信道的存在于输出信道的配置。 输入信道被映射到gemäß到所选择的规则的输出通道。

公开(公告)号：EP2733964A1

公开(公告)日：2014-05-21

申请号：EP13159424.4

申请日：2013-03-15

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Friedrich-Alexander-Universität Erlangen-Nürnberg ,  Technische Universität Ilmenau

发明人： Adami, Alexander ,  Herre, Jürgen ,  Kuntz, Achim ,  Del Galdo, Giovanni ,  Küch, Fabian

IPC分类号： H04S5/00

CPC分类号： G10L19/008 ,  H04S5/00 ,  H04S7/30 ,  H04S7/303

摘要： Apparatus (100) for adapting a spatial audio signal (2) for an original loudspeaker setup to a playback loudspeaker setup that differs from the original loudspeaker setup. The apparatus comprises a direct-ambience decomposer (130) that is configured to decomposing channel signals in a segment of the original loudspeaker setup into direct sound (D) and ambience components (A), and to determine a direction of arrival of the direct sound components. A direct sound renderer (150) receives a playback loudspeaker setup information and adjusts the direct sound components (D) using the playback loudspeaker setup information so that a perceived direction of arrival of the direct sound components in the playback loudspeaker setup is substantially identical to the direction of arrival of the direct sound components. A combiner (180) combines adjusted direct sound components and possibly modified ambience components to obtain loudspeaker signals for loudspeakers of the playback loudspeaker setup.

摘要翻译： 装置（100），用于在原扬声器设置为适应空间音频信号（2）的重放的扬声器设置的确不同于原始扬声器设置。 该装置包括一个直接的氛围分解器（130）也被配置成在原扬声器设置成直接声音（D）和环境组分（A）的一个段分解信道信号，以及确定矿直接声音的到达方向 组件。 直接声音渲染（150）接收的回放扬声器的设置信息和bestimmt使用播放扬声器设置信息的直接声音分量（D），所以没在回放扬声器设置的直接声音分量的到来的所感知方向基本上相同于 直接声音分量的到达方向。 组合器（180）结合了调整后的DirectSound组分和可能的修饰的环境分量，以获得扬声器信号的回放扬声器设置的扬声器。

公开(公告)号：EP2717261A1

公开(公告)日：2014-04-09

申请号：EP13167485.5

申请日：2013-05-13

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Friedrich-Alexander-Universität Erlangen-Nürnberg

发明人： Disch, Sascha ,  Fuchs, Harald ,  Paulus, Jouni ,  Terentiv, Leon ,  Hellmuth, Oliver ,  Herre, Jürgen

IPC分类号： G10L19/008 ,  G10L19/02

CPC分类号： G10L19/008 ,  G10L19/02

摘要： A decoder for generating an un-mixed audio signal comprising a plurality of un-mixed audio channels is provided. Moreover, an encoder and an encoded audio signal is provided. The decoder comprises an un-mixing-information determiner for determining un-mixing information by receiving first parametric side information on the at least one audio object signal and second parametric side information on the at least one audio object signal, wherein the frequency resolution of the second parametric side information is higher than the frequency resolution of the first parametric side information. Moreover, the decoder comprises an un-mix module for applying the un-mixing information on a downmix signal, indicating a downmix of at least one audio object signal, to obtain an un-mixed audio signal comprising the plurality of un-mixed audio channels. The un-mixing-information determiner is configured to determine the un-mixing information by modifying the first parametric information and the second parametric information to obtain modified parametric information, such that the modified parametric information has a frequency resolution which is higher than the first frequency resolution.

摘要翻译： 提供了一种用于在非混合音频信号产生包括未混合音频信道与多个解码器。 更完了，在编码器和编码的音频信号被提供。 通过接收关于在所述至少一个音频对象信号的所述至少一个音频对象信号，并且第二参数侧信息的第一参数侧信息，worin的频率分辨率的解码器，用于确定开采未混合信息未混合-信息确定包括 第二参数侧信息比的第一参量侧信息的频率分辨率越高。 更上方，所述解码器包括到未混合组件用于施加上的下混信号的未混合的信息，表示至少一个音频对象信号的下混合，以获得包含未混合的音频信道的所述多个未混合音频信号 ， 未混合信息确定器被配置为确定矿的未混合通过修改第一参数信息和第二参数的信息，以获得修改的参数信息，检查做了修改的参数信息的频率分辨率的所有比所述第一频率高 分辨率。

公开(公告)号：EP2535892A1

公开(公告)日：2012-12-19

申请号：EP12183562.3

申请日：2010-06-23

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

发明人： Hellmuth, Oliver ,  Falch, Cornelia ,  Herre, Jürgen ,  Hilpert, Johannes ,  Ridderbusch, Falko ,  Terentiv, Leonid

IPC分类号： G10L19/00 ,  G10L19/14 ,  H04S7/00

CPC分类号： G10L19/20 ,  G10H1/361 ,  G10H2210/301 ,  G10L19/008 ,  H04S7/30 ,  H04S2400/11 ,  H04S2420/07

摘要： An audio signal decoder for providing an upmix signal representation in dependence on a downmix signal representation and an object-related parametric information comprises an object separator configured to decompose the downmix signal representation, to provide a first audio information describing a first set of one or more audio objects of a first audio object type and a second audio information describing a second set of one or more audio objects of a second audio object type, in dependence on the downmix signal representation and using at least a part of the object-related parametric information. The audio signal decoder also comprises an audio signal processor configured to receive the second audio information and to process the second audio information in dependence on the object-related parametric information, to obtain a processed version of the second audio information. The audio signal decoder also comprises an audio signal combiner configured to combine the first audio information with the processed version of the second audio information, to obtain the upmix signal representation.

摘要翻译： 配置为分解所述下混信号表示，以提供第一音频信息描述的第一组的一个或多个的对象分离器，用于提供至混信号表示在依赖下混信号表示和所述的音频信号解码器的对象相关的参数信息包括 第一音频对象类型和第二音频信息描述的第二组的第二音频对象类型的一个或多个音频对象的音频对象，在所述下混信号表示的依赖，并使用至少的对象相关参数信息的一部分 ， 配置成接收所述第二音频信息并处理在所述对象相关参数信息的依赖第二音频信息，以获得所述第二音频信息的处理的版本的音频信号处理器，以便所述音频信号解码器包括。 因此，音频信号解码器被配置为将第一音频信息与所述第二音频信息的处理版本组合的音频信号合成器的包括，以获得上混信号表示。

公开(公告)号：EP1990799A1

公开(公告)日：2008-11-12

申请号：EP08014723.4

申请日：2006-06-30

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

发明人： Wabnik, Stefan ,  Schuller, Gerald ,  Herre, Jürgen ,  Grill, Bernhard ,  Multrus, Markus ,  Bayer, Stefan ,  Krämer, Ulrich ,  Hirschfeld, Jens

IPC分类号： G10L19/00

CPC分类号： G10L19/20 ,  G10L19/265

摘要： An audio encoder, an audio decoder or an audio processor includes a filter for generating a filtered audio signal, the filter having a variable warping characteristic, the characteristic being controllable in response to a time-varying control signal, the control signal indicating a small or no warping characteristic or a comparatively high warping characteristic. Furthermore, a controller is connected for providing the time-varying control signal, which depends on the audio signal. The filtered audio signal can be introduced to an encoding processor having different encoding algorithms, one of which is a coding algorithm adapted to a specific signal pattern. Alternatively, the filter is a post-filter receiving a decoded audio signal.

摘要翻译： 音频编码器，音频解码器或音频处理器包括用于生成滤波音频信号的滤波器，该滤波器具有可变翘曲特性，该特性响应于时变控制信号是可控制的，该控制信号指示小的或 无翘曲特性或相对较高的翘曲特性。 此外，控制器被连接用于提供取决于音频信号的时变控制信号。 滤波后的音频信号可以被引入到具有不同编码算法的编码处理器，其中之一是适用于特定信号模式的编码算法。 或者，滤波器是接收解码音频信号的后置滤波器。

公开(公告)号：EP4235660A2

公开(公告)日：2023-08-30

申请号：EP23178772.2

申请日：2009-06-25

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

发明人： Rettelbach, Nikolaus ,  Fuchs, Guillaume ,  Geyersberger, Stefan ,  Grill, Bernhard ,  Hirschfeld, Jens ,  Herre, Jürgen ,  Multrus, Markus ,  Popp, Harald ,  Schuller, Gerald ,  Wabnik, Stefan

IPC分类号： G10L19/032

摘要： An encoder for providing an audio stream on the basis of a transform-domain representation of an input audio signal comprises a quantization error calculator configured to determine a multi-band quantization error over a plurality of frequency bands of the input audio signal for which separate band gain information is available. The encoder also comprises an audio stream provider configured to provide the audio stream such that the audio stream comprises an information describing an audio content of the frequency bands and an information describing the multi-band quantization error.
A decoder for providing a decoded representation of an audio signal on the basis of an encoded audio stream representing spectral components of frequency bands of the audio signal comprises a noise filler configured to introduce noise into spectral components of a plurality of frequency bands to which separate frequency band gain information is associated on the basis of a common multi-band noise intensity value.

公开(公告)号：EP4213147A1

公开(公告)日：2023-07-19

申请号：EP23159427.6

申请日：2019-10-28

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

发明人： Herre, Jürgen ,  Delgado, Pablo Manuel ,  Dick, Sascha

IPC分类号： G10L25/03 ,  G10L25/60 ,  G10L19/16 ,  G10L19/008 ,  G10L25/69

摘要： An audio analyzer configured to obtain spectral domain representations of two or more input audio signals. Additionally the audio analyzer is configured to obtain directional information associated with spectral bands of the spectral domain representations and to obtain loudness information associated with different directions as an analysis result. Contributions to the loudness information are determined in dependence on the directional information.

公开(公告)号：EP2924687A1

公开(公告)日：2015-09-30

申请号：EP15167197.1

申请日：2011-07-06

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

发明人： Kuntz, Achim ,  Disch, Sascha ,  Herre, Jürgen ,  Küch, Fabian ,  Hilpert, Johannes

IPC分类号： G10L19/008 ,  G10L19/00 ,  G10L19/025

CPC分类号： G10L19/0017 ,  G10L19/008 ,  G10L19/025

摘要： An apparatus for encoding an audio signal having a plurality of channels is provided. The apparatus comprises a downmixer (1010) for downmixing the plurality of channels to obtain a downmix signal. Moreover, the apparatus comprises a residual signal calculator (1020) adapted for calculating a residual signal. Furthermore, the apparatus comprises a phase information calculator (1030) adapted for calculating information on a phase difference between the downmix and the residual signal to obtain phase information. Moreover, the apparatus comprises an output generator (1040) for outputting the phase information.

公开(公告)号：EP2830332A3

公开(公告)日：2015-03-11

申请号：EP13189249.9

申请日：2013-10-18

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Friedrich-Alexander-Universität Erlangen-Nürnberg

发明人： Herre, Jürgen ,  Küch, Fabian ,  Kuntz, Achim ,  Kraftschmer, Michael ,  Faller, Christoph

IPC分类号： H04S3/00 ,  H04S7/00 ,  G10L19/008

CPC分类号： H04S7/303 ,  G10L19/008 ,  H04R5/02 ,  H04S3/002 ,  H04S3/02 ,  H04S7/30 ,  H04S7/302 ,  H04S7/305 ,  H04S7/308 ,  H04S2400/01 ,  H04S2400/03 ,  H04S2420/03

摘要： A method for mapping a plurality of input channels of an input channel configuration to output channels of an output channel configuration comprises providing a set of rules associated with each input channel of the plurality of input channels, wherein the rules define different mappings between the associated input channel and a set of output channels. For each input channel of the plurality of input channels, a rule associated with the input channel is accessed, determination is made whether the set of output channels defined in the accessed rule is present in the output channel configuration, and the accessed rule is selected if the set of output channels defined in the accessed rule is present in the output channel configuration. The input channels are mapped to the output channels according to the selected rule.

摘要翻译： 用于映射的第一输入通道和输入通道配置中的输出信道配置的至少一个输出信道的第二输入信道，worin各输入通道和各输出信道的装置，具有在其中相关联的扬声器位于相对于一个方向 中央听众位置，worin所述装置被配置为将所述第一输入信道映射到所述输出信道配置的第一输出通道。 该装置进一步被配置为的至少一种）映射第二输入通道到所述第一输出通道，包括通过施加均衡滤波器中的至少一个和一个解相关滤波器的第二输入通道，以及b处理所述第二输入通道 ），尽管该第二输入信道的一个方向和所述第一输出通道的方向之间的角度偏差的factthat的是小于第二输入信道的一个方向和所述第二输出通道之间和/或角度偏移的是小于 到第二输入通道的方向和第三输出通道的方向之间的角度偏差，通过在第二和第三输出通道之间平移映射第二输入信道到第二和第三输出通道。