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公开(公告)号：EP3025521B1
公开(公告)日：2019-05-01
申请号：EP14753020.8
申请日：2014-07-14
发明人： ERTEL, Christian , HILPERT, Johannes , HÖLZER, Andreas , KUNTZ, Achim , PLOGSTIES, Jan , KRATSCHMER, Michael
IPC分类号： H04S7/00 , H04S5/00 , G10L19/008
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公开(公告)号：EP3123741B1
公开(公告)日：2019-02-20
申请号：EP15716439.3
申请日：2015-03-25
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3.发明授权METHOD FOR DECODING AND ENCODING A DOWNMIX MATRIX, METHOD FOR PRESENTING AUDIO CONTENT, ENCODER AND DECODER FOR A DOWNMIX MATRIX, AUDIO ENCODER AND AUDIO DECODER 有权用于解码和编码DOWNMIX矩阵的方法，用于呈现音频内容，用于DOWNMIX矩阵，音频编码器和音频解码器的编码器和解码器的方法
公开(公告)号：EP3061087B1
公开(公告)日：2017-11-22
申请号：EP14783660.5
申请日：2014-10-13
发明人： GHIDO, Florin , KUNTZ, Achim , GRILL, Bernhard
IPC分类号： G10L19/008
CPC分类号： G10L19/008
摘要： A method is described which decodes a downmix matrix (306) for mapping a plurality of input channels (300) of audio content to a plurality of output channels (302), the input and output channels (300, 302) being associated with respective speakers at predetermined positions relative to a listener position, wherein the downmix matrix (306) is encoded by exploiting the symmetry of speaker pairs (S 1 -S 9 ) of the plurality of input channels (300) and the symmetry of speaker pairs (S 10 -S 11 ) of the plurality of output channels (302). Encoded information representing the encoded downmix matrix (306) is received and decoded for obtaining the decoded downmix matrix (306).
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公开(公告)号：EP2647005B1
公开(公告)日：2017-08-16
申请号：EP11801648.4
申请日：2011-12-02
发明人： DEL GALDO, Giovanni , THIERGART, Oliver , HERRE, Jürgen , KÜCH, Fabian , HABETS, Emanuel , CRACIUN, Alexandra , KUNTZ, Achim
CPC分类号： G10L19/00 , G10L19/008 , G10L19/02 , G10L19/167 , G10L19/20 , H04R1/326 , H04R3/005 , H04R2430/21
摘要： An apparatus for generating an audio output signal to simulate a recording of a virtual microphone at a configurable virtual position in an environment includes a sound events position estimator and an information computation module. The former is adapted to estimate a sound source position indicating a position of a sound source in the environment, wherein the sound events position estimator is adapted to estimate the sound source position based on first and second direction information provided by first and second real spatial microphones, respectively, located at first and second real microphone positions in the environment, respectively. The information computation module is adapted to generate the audio output signal based on a first recorded audio input signal, on the first real microphone position, on the virtual position of the virtual microphone, and on the sound source position.
摘要翻译： 一种用于生成音频输出信号以模拟环境中的可配置虚拟位置处的虚拟麦克风的记录的设备，包括声音事件位置估计器和信息计算模块。 前者适用于估计指示环境中的声源的位置的声源位置，其中声音事件位置估计器适于基于由第一和第二真实空间麦克风提供的第一和第二方向信息来估计声源位置 分别位于环境中的第一和第二真实麦克风位置处。 信息计算模块适用于基于第一记录音频输入信号，第一真实麦克风位置，虚拟麦克风的虚拟位置和声源位置生成音频输出信号。
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5.发明公开
公开(公告)号：EP3025519A2
公开(公告)日：2016-06-01
申请号：EP14738862.3
申请日：2014-07-15
IPC分类号： H04S7/00 , H04S3/00 , 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 ），尽管角度偏差的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factthat的是小于在第二输入信道的一个方向和所述第二输出通道之间和/或角的偏差为小于 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。
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6.发明公开AUDIO DECODER, AUDIO ENCODER, METHOD FOR PROVIDING AT LEAST FOUR AUDIO CHANNEL SIGNALS ON THE BASIS OF AN ENCODED REPRESENTATION, METHOD FOR PROVIDING AN ENCODED REPRESENTATION ON THE BASIS OF AT LEAST FOUR AUDIO CHANNEL SIGNALS AND COMPUTER PROGRAM USING A BANDWIDTH EXTENSION 有权音频解码器，音频编码器，方法用于基于编码表示至少有四个声道的音频信号，为了提供编码表示方法基于至少四声道音频信号和计算机程序有带宽扩展
公开(公告)号：EP3022734A1
公开(公告)日：2016-05-25
申请号：EP14738535.5
申请日：2014-07-14
发明人： DICK, Sascha , ERTEL, Christian , HELMRICH, Christian , HILPERT, Johannes , HÖLZER, Andreas , KUNTZ, Achim
IPC分类号： G10L19/008 , G10L21/038
CPC分类号： G10L19/008 , G10L19/0017 , G10L21/038 , H04S3/008 , H04S7/30 , H04S2400/01 , H04S2400/03 , H04S2420/03
摘要： An audio decoder for providing at least four bandwidth-extended channel signals on the basis of an encoded representation is configured to provide a first downmix signal and a second downmix signal on the basis of a jointly encoded representation of the first downmix signal and the second downmix signal using a multi-channel decoding. The audio decoder is configured to provide at least a first audio channel signal and a second audio channel signal on the basis of the first downmix signal using a multi-channel decoding. The audio decoder is configured to provide at least a third audio channel signal and a fourth audio channel signal on the basis of the second downmix signal using a multi-channel decoding. The audio decoder is configured to perform a multi-channel bandwidth extension on the basis of the first audio channel signal and the third audio channel signal, to obtain a first bandwidth-extended channel signal and a third bandwidth-extended channel signal. The audio decoder is configured to perform a multi-channel bandwidth extension on the basis of the second audio channel signal and the fourth audio channel signal, to obtain a second bandwidth extended channel signal and a fourth bandwidth extended channel signal. An audio encoder uses a related concept.
摘要翻译： 用于编码表示的基础上，提供至少四个带宽扩展信道信号的音频解码器被配置为提供一个第一混合信号和所述第一混合信号的联合编码表示的基础上，第二缩混信号和所述第二下混 利用信号的多声道解码。 音频解码器被配置为提供至少一个第一音频信道信号，并使用多通道解码所述第一缩混信号的基础上的第二音频信道信号。 音频解码器被配置为提供至少一个第三通道的音频信号，并使用多通道解码所述第二缩混信号的基础上的第四信道的音频信号。 音频解码器被配置为将第一音频信道信号和第三音频信道信号的基础上执行多通道带宽扩展，以获得第一带宽扩展信道信号和第三带宽扩展信道信号。 音频解码器被配置为将第二音频信道信号和所述第四音频信道信号的基础上执行多通道带宽扩展，以获得第二带宽扩展信道信号和第四信道带宽扩展信号。 音频编码器使用相关的概念。
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7.发明公开APPARATUS AND METHOD FOR GENERATING A PLURALITY OF PARAMETRIC AUDIO STREAMS AND APPARATUS AND METHOD FOR GENERATING A PLURALITY OF LOUDSPEAKER SIGNALS 有权设备和方法的几种参数化音频流产生多个扬声器SIGNALS生产以及设备和方法
公开(公告)号：EP2904818A1
公开(公告)日：2015-08-12
申请号：EP13789558.7
申请日：2013-11-12
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , Technische Universität Ilmenau
CPC分类号： H04S5/005 , G10L19/008 , G10L19/08 , H04S3/002 , H04S7/30 , H04S2400/01 , H04S2400/11 , H04S2400/15 , H04S2420/03 , H04S2420/11
摘要： An apparatus (100) for generating a plurality of parametric audio streams ( 125) (θ
i , Ψ
i , W
i ) from an input spatial audio signal (105) obtained from a recording in a recording space comprises a segmentor (110) and a generator (120). The segmentor (110) is configured for providing at least two input segmental audio signals (115) (W
i , X
i , Y
i , Z
i ) from the input spatial audio signal (105), wherein the at least two input segmental audio signals (1 15) (W
i , X
i , Y
i , Z
i ) are associated with corresponding segments (Seg
i ) of the recording space. The generator (120) is configured for generating a parametric audio stream for each of the at least two input segmental audio signals (115) (W
i , X
i , Y
i , Z
i ) to obtain the plurality of parametric audio streams (125) (θ
i , Ψ
i , W
i ).-
8.发明公开APPARATUS AND METHOD FOR GEOMETRY-BASED SPATIAL AUDIO CODING 有权VORRICHTUNG UND VERFAHREN ZUR GEOMETRIE-BASIERTENRÄUMLICHENAUDIO-KODIERUNG
公开(公告)号：EP2647005A1
公开(公告)日：2013-10-09
申请号：EP11801648.4
申请日：2011-12-02
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , Friedrich-Alexander-Universität Erlangen-Nürnberg
发明人： DEL GALDO, Giovanni , THIERGART, Oliver , HERRE, Jürgen , KÜCH, Fabian , HABETS, Emanuel , CRACIUN, Alexandra , KUNTZ, Achim
CPC分类号： G10L19/00 , G10L19/008 , G10L19/02 , G10L19/167 , G10L19/20 , H04R1/326 , H04R3/005 , H04R2430/21
摘要： An apparatus for generating an audio output signal to simulate a recording of a virtual microphone at a configurable virtual position in an environment includes a sound events position estimator and an information computation module. The former is adapted to estimate a sound source position indicating a position of a sound source in the environment, wherein the sound events position estimator is adapted to estimate the sound source position based on first and second direction information provided by first and second real spatial microphones, respectively, located at first and second real microphone positions in the environment, respectively. The information computation module is adapted to generate the audio output signal based on a first recorded audio input signal, on the first real microphone position, on the virtual position of the virtual microphone, and on the sound source position.
摘要翻译： 一种用于生成音频输出信号以模拟在环境中的可配置虚拟位置处的虚拟麦克风的记录的装置包括声音事件位置估计器和信息计算模块。 前者适于估计指示环境中声源的位置的声源位置，其中声音事件位置估计器适于基于由第一和第二实际空间麦克风提供的第一和第二方向信息来估计声源位置 分别位于环境中的第一和第二实际麦克风位置。 信息计算模块适于基于第一实际麦克风位置上的第一记录音频输入信号，虚拟麦克风的虚拟位置和声源位置生成音频输出信号。
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公开(公告)号：EP4307686A3
公开(公告)日：2024-04-17
申请号：EP23212340.6
申请日：2015-09-08
发明人： THOMA, Herbert , BLEIDT, Robert , KRÄGELOH, Stefan , NEUENDORF, Max , KUNTZ, Achim , NIEDERMEIER, Andreas , KRATSCHMER, Michael
IPC分类号： H04H20/10 , H04N21/234
CPC分类号： H04N21/233 , H04N21/439 , H04H20/103 , H04N21/4302 , H04N21/44004 , H04N21/23424
摘要： Audio splicing is rendered more effective by the use of one or more truncation unit packets inserted into the audio data stream so as to indicate to an audio decoder, for a predetermined access unit, an end portion of an audio frame with which the predetermined access unit is associated, as to be discarded in playout.
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公开(公告)号：EP3618460A1
公开(公告)日：2020-03-04
申请号：EP19203003.9
申请日：2015-01-05
发明人： BORSS, Christian , HILPERT, Johannes , KUNTZ, Achim , FISCHER, Michael , SCHUH, Florian , GRILL, Bernhard , ERTEL, Christian
摘要： An apparatus for generating a plurality of audio channels for a first speaker setup is characterized by an imaginary speaker determiner, an energy distribution calculator, a processor and a renderer. The imaginary speaker determiner is configured to determine a position of an imaginary speaker not contained in the first speaker setup to obtain a second speaker setup containing the imaginary speaker. The energy distribution calculator is configured to calculate an energy distribution from the imaginary speaker to the other speakers in the second speaker setup. The processor is configured to repeat the energy distribution to obtain a downmix information for a downmix from the second speaker setup to the first speaker setup. The renderer is configured to generate the plurality of audio channels using the downmix information.
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