公开(公告)号：EP2609591B1

公开(公告)日：2016-06-01

申请号：EP11743459.7

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 ,  KUECH, Fabian ,  HILPERT, Johannes

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

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：EP2920982A1

公开(公告)日：2015-09-23

申请号：EP13791783.7

申请日：2013-11-11

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  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： 用于将用于原始扬声器设置的空间音频信号（2）适配成与原始扬声器设置不同的回放扬声器设置的设备（100）。 该设备包括直接环境分解器（130），其被配置为将原始扬声器设置的段中的信道信号分解为直接声音（D）和环境分量（A），并且确定直接声音的到达方向 组件。 直接声音渲染器（150）接收播放扬声器设置信息并使用播放扬声器设置信息来调整直接声音分量（D），使得直播声音分量在回放扬声器设置中的感知到达方向基本上与 直接声音组件的到达方向。 组合器（180）将调节的直接声音分量和可能的改进的氛围组件组合以获得用于播放扬声器设置的扬声器的扬声器信号。

公开(公告)号：EP2904611A1

公开(公告)日：2015-08-12

申请号：EP13774118.7

申请日：2013-10-02

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

发明人： DISCH, Sascha ,  PAULUS, Jouni ,  EDLER, Bernd ,  HELLMUTH, Oliver ,  HERRE, Jürgen ,  KASTNER, Thorsten

IPC分类号： G10L19/025 ,  G10L19/008

CPC分类号： G10L19/008 ,  G10L19/02 ,  G10L19/0204 ,  G10L19/025 ,  G10L19/20

摘要： A decoder for generating an audio output signal comprising one or more audio output channels from a downmix signal comprising a plurality of time-domain downmix samples is provided. The downmix signal encodes two or more audio object signals. The decoder comprises a window-sequence generator (134) for determining a plurality of analysis windows, wherein each of the analysis windows comprises a plurality of time-domain downmix samples of the downmix signal. Each analysis window of the plurality of analysis windows has a window length indicating the number of the time-domain downmix samples of said analysis window. The window-sequence generator (134) is configured to determine the plurality of analysis windows so that the window length of each of the analysis windows depends on a signal property of at least one of the two or more audio object signals. Moreover, the decoder comprises a t/f-analysis module (135) for transforming the plurality of time-domain downmix samples of each analysis window of the plurality of analysis windows from a time-domain to a time-frequency domain depending on the window length of said analysis window, to obtain a transformed downmix. Furthermore, the decoder comprises an un-mixing unit (136) for un-mixing the transformed downmix based on parametric side information on the two or more audio object signals to obtain the audio output signal. Moreover, an encoder is provided.

摘要翻译： 提供了一种用于在包括一个或从下混信号包括时域混样品的多元性多个音频输出声道生成音频输出信号的解码器。 缩混信号编码两个或多个音频对象信号。 解码器用于确定性采矿包括窗口序列产生器（134）的分析窗口复数，worin每个分析窗口的包括缩混信号的时域混样品的多元性。 的分析窗，所述多个每个分析窗口具有窗口长度指示所述分析窗口的时域混的样本的数目。 窗口序列产生器（134）被配置为确定矿分析窗口多元性所以没有每个分析窗口的窗口长度取决于两个或更多个音频对象信号中的至少一个的信号特性。 更上方，所述解码器包括在/ F-分析模块（135），用于将的分析窗口，所述多个每个分析窗口的时域混样品的多元性从时域变换到时频域取决于窗口长度 所述分析窗口，以获得转化的缩混。 进一步，对于未混合单元（136）的解码器包括未混合的转化缩混基于关于两个或更多个音频对象信号，以获得所述音频输出信号参数侧信息。 更过，在编码器提供。

公开(公告)号：EP2883226A1

公开(公告)日：2015-06-17

申请号：EP13732189.9

申请日：2013-06-28

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

发明人： KASTNER, Thorsten ,  HERRE, Jürgen ,  TERENTIV, Leon ,  HELLMUTH, Oliver ,  PAULUS, Jouni ,  RIDDERBUSCH, Falko

IPC分类号： G10L19/008 ,  G10L19/16

CPC分类号： G10L19/008 ,  G10L19/173 ,  H04S2420/03

摘要： An apparatus for adapting input audio information, encoding one or more audio objects, to obtain adapted audio information is provided. The input audio information comprises two or more input audio downmix channels and further comprises input parametric side information. The adapted audio information comprises one or more adapted audio downmix channels and further comprises adapted parametric side information. The apparatus comprises a downmix signal modifier (110) for adapting, depending on adaptation information, the two or more input audio downmix channels to obtain the one or more adapted audio downmix channels. Moreover, the apparatus comprises a parametric side information adapter (120) for adapting, depending on the adaptation information, the input parametric side information to obtain the adapted parametric side information.

公开(公告)号：EP2609590B1

公开(公告)日：2015-05-20

申请号：EP11731316.3

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 ,  KUECH, Fabian ,  HILPERT, Johannes

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

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：EP2820647A1

公开(公告)日：2015-01-07

申请号：EP13705826.9

申请日：2013-02-26

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

发明人： DISCH, Sascha ,  HERRE, Jürgen ,  EDLER, Bernd ,  NAGEL, Frederik

IPC分类号： G10L19/02

CPC分类号： G10L19/02 ,  G10L19/0204 ,  G10L19/26

摘要： A decoder for decoding an encoded audio signal to obtain a phase-adjusted audio signal is provided. The decoder comprises a decoding unit (110) and a phase adjustment unit (120). The decoding unit (110) is adapted to decode the encoded audio signal to obtain a decoded audio signal. The phase adjustment unit (120) is adapted to adjust the decoded audio signal to obtain the phase-adjusted audio signal. The phase adjustment unit (120) is configured to receive control information depending on a vertical phase coherence of the encoded audio signal. Moreover, the phase adjustment unit (120) is adapted to adjust the decoded audio signal based on the control information.

公开(公告)号：EP2609591A1

公开(公告)日：2013-07-03

申请号：EP11743459.7

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 ,  KUECH, Fabian ,  HILPERT, Johannes

IPC分类号： G10L19/00

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：EP1774515B1

公开(公告)日：2012-05-02

申请号：EP05740130.9

申请日：2005-05-12

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Agere System Inc.

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 for calculating a cancellation channel using information related to the original center channel available at the decoder. The device furthermore includes a combiner for combining a transmission channel with the cancellation channel. Finally, the apparatus includes a reconstructor for generating the multi-channel output signal. Due to the center channel cancellation, the channel reconstructor 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.

公开(公告)号：EP2304720B1

公开(公告)日：2011-11-30

申请号：EP09776859.2

申请日：2009-06-26

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

发明人： RETTLEBACH, Nikolaus ,  GRILL, Bernhard ,  FUCHS, Guillaume ,  GEYERSBERGER, Stefan ,  MULTRUS, Markus ,  POPP, Harald ,  HERRE, Jürgen ,  WABNIK, Stefan ,  SCHULLER, Gerald ,  HIRSCHFELD, Jens

IPC分类号： G10L19/00 ,  G10L19/02

CPC分类号： G10L19/035 ,  G10L19/008 ,  G10L19/02 ,  G10L19/0204 ,  G10L19/028 ,  G10L19/032 ,  G10L25/18

摘要： A noise filler for providing a noise-filled spectral representation of an audio signal on the basis of an input spectral representation of the audio signal comprises a spectral region identifier configured to identify spectral regions of the input spectral representation spaced from non-zero spectral regions of the input spectral representation by at least one intermediate spectral region, to obtain identified spectral regions, and a noise inserter configured to selectively introduce noise into the identified spectral regions to obtain the noise-filled spectral representation of the audio signal. A noise filling parameter calculator for providing a noise filling parameter on the basis of a quantized spectral representation of an audio signal comprises a spectral region identifier, as mentioned above, and a noise value calculator configured to selectively consider quantization errors of the identified spectral regions for a calculation of the noise filling parameter. Accordingly, an encoded audio signal representation representing the audio signal can be obtained.

摘要翻译： 一种用于表示音频信号的频带的频谱分量的编码的音频流的基础上，提供一种音频信号的解码的表示解码器包括用于引入噪声引入到哪个频率带分开的频带中的多个光谱分量的噪声填充器 增益信息是一种常见的多频带噪声强度值的基础上相关联。

公开(公告)号：EP2206113B1

公开(公告)日：2011-04-27

申请号：EP08802737.0

申请日：2008-10-01

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

发明人： UHLE, Christian ,  HELLMUTH, Oliver ,  HERRE, Jürgen ,  POPP, Harald ,  KASTNER, Thorsten

IPC分类号： G10L21/02 ,  H04S5/02

CPC分类号： H04S5/005 ,  G10L19/008 ,  G10L21/0364 ,  G10L25/78

摘要： To generate a multi-channel signal with a number of output channels that is greater than a number of input channels, a mixer is used to upmix the input signal into at least one direct channel signal and at least one surround channel signal. The device is equipped with a voice detector (18) for detecting a section of the input signal, the direct signal, or the surround channel signal, in which voice portions are present. A signal modifier (20) modifies the input signal or the surround channel signal on the basis of said detection to damp voice portions in the surround channel signal, whilst voice portions of this type are damped to a lesser degree in the direct channel signal or are not damped at all. A loudspeaker signal output system (22) projects the direct channel signals and the surround channel signals onto loudspeaker signals that are associated with a defined reproduction system, such as a 5.1 system.