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81.发明公开Apparatus and method for generating a plurality of audio channels 审中-公开Vorrichtung und Verfahren zur Erzeugung einer Vielzahl vonAudiokanälen
公开(公告)号：EP2892250A1
公开(公告)日：2015-07-08
申请号：EP14150362.3
申请日：2014-01-07
发明人： Borss,Christian , Ertel, Christian , Hilpert, Johannes , Kuntz, Achim , Fischer, Michael , Schuh, Florian , Grill, Bernhard
CPC分类号： H04S7/308 , G10L19/008 , G10L19/20 , H04S3/02 , H04S7/30 , H04S2400/01 , H04S2400/03 , H04S2400/11
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.
摘要翻译： 用于产生用于第一扬声器设置的多个音频通道的装置的特征在于虚拟扬声器确定器，能量分布计算器，处理器和渲染器。 虚拟扬声器确定器被配置为确定不包含在第一扬声器设置中的虚拟扬声器的位置，以获得包含虚拟扬声器的第二扬声器设置。 能量分布计算器被配置为在第二扬声器设置中计算从虚拟扬声器到其它扬声器的能量分布。 处理器被配置为重复能量分布以获得用于从第二扬声器设置到第一扬声器设置的下混的下混信息。 渲染器被配置为使用下混信息来生成多个音频通道。
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公开(公告)号：EP2830336A3
公开(公告)日：2015-03-04
申请号：EP13189285.3
申请日：2013-10-18
发明人： Ertel, Christian , Hilpert, Johannes , Hölzer, Andreas , Kuntz, Achim , Plogsties, Jan , KRratschmer, Michael
CPC分类号： H04S5/005 , G10L19/008 , H04S5/00 , H04S7/308 , H04S2400/01 , H04S2400/03 , H04S2400/05 , H04S2420/03
摘要： An audio decoder device for decoding a compressed input audio signal comprising
at least one core decoder (6, 24) having one or more processors (36, 36') for generating a processor output signal (37) based on a processor input signal (38, 38'), wherein a number of output channels (37.1, 37.2, 37.1', 37.2') of the processor output signal (37, 37') is higher than a number of input channels (38.1, 38.1') of the processor input signal (38, 38'), wherein each of the one or more processors (36, 36') comprises a decorrelator (39, 39') and a mixer (40, 40'), wherein a core decoder output signal (13) having a plurality of channels (13.1, 13.2, 13.3, 13,4) comprises the processor output signal (37, 37'), and wherein the core decoder output signal (13) is suitable for a reference loudspeaker setup (42);
at least one format converter device (9, 10) configured to convert the core decoder output signal (13) into an output audio signal (31), which is suitable for a target loudspeaker setup (45); and
a control device (46) configured to control at least one or more processors (36, 36') in such way that the decorrelator (39, 39') of the processor (36, 36') may be controlled independently from the mixer (40, 40') of the processor (36, 36'), wherein the control device (46) is configured to control at least one of the decorrelators (39, 39') of the one or more processors (36, 36') depending on the target loudspeaker setup (45).-
83.发明公开
公开(公告)号：EP2830060A1
公开(公告)日：2015-01-28
申请号：EP13189450.3
申请日：2013-10-18
IPC分类号： G10L19/028 , G10L19/032
CPC分类号： G10L19/028 , G10L19/008 , G10L19/035 , H04S3/008 , H04S2400/01 , H04S2400/03 , H04S2420/03
摘要： In multichannel audio coding, an improved coding efficiency is achieved by the following measure: the noise filling of zero-quantized scale factor bands is performed using noise filling sources other than artificially generated noise or spectral replica. In particular, the coding efficiency in multichannel audio coding may be rendered more efficient by performing the noise filling based on noise generated using spectral lines from a previous frame of, or a different channel of the current frame of, the multichannel audio signal.
摘要翻译： 在多声道音频编码中，通过以下措施来实现改进的编码效率：使用除人为产生的噪声或频谱复制品之外的噪声填充源来执行零量化比例因子频带的噪声填充。 特别地，通过基于使用来自多声道音频信号的当前帧的先前帧或不同频道的频谱线产生的噪声执行噪声填充，可以使多声道音频编码中的编码效率更高效。
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84.发明公开Multi-channel audio decoder, multi-channel audio encoder, methods and computer program using a residual-signal-based adjustment of a contribution of a decorrelated signal 审中-公开多通道音频译码器，一个多通道音频编码器，方法和计算机程序与去相关的信号的参与的残差信号基于适配
公开(公告)号：EP2830053A1
公开(公告)日：2015-01-28
申请号：EP13189309.1
申请日：2013-10-18
IPC分类号： G10L19/008 , G10L19/20
CPC分类号： G10L19/008 , G10L19/20 , G10L19/22 , H04S1/007 , H04S3/02 , H04S2400/03 , H04S2420/07
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 perform a weighted combination of a downmix signal, a decorrelated signal and a residual signal, to obtain one of the output audio signals. The multi-channel audio decoder is configured to determine a weight describing a contribution of the decorrelated signal in the weighted combination in dependence on the residual signal. A multi-channel audio encoder for providing an encoded representation of a multi-channel audio signal is configured to obtain a downmix signal on the basis of the multi-channel audio signal, to provide parameters describing dependencies between the channels of the multi-channel audio signal, and to provide a residual signal. The multi-channel audio encoder is configured to vary an amount of residual signal included into the encoded representation in dependence on the multi-channel audio signal.
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为执行一个降混信号，去相关的信号和残余信号的加权组合，以获得输出音频信号中的一个。 该多通道音频解码器配置为确定性矿的重量描述解相关信号的加权组合中的依赖上的残留信号的贡献。 对于多声道音频信号的编码表示的提供一种多通道音频编码器被配置为将所述多通道音频信号的基础上获得的下混合信号，以提供参数多通道音频的信道之间的描述的依赖关系 信号，并提供残留信号。 所述多通道音频编码器被配置在残差信号的量，以改变纳入在对多声道音频信号的依赖编码表示。
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85.发明授权Audio signal decoder, method for decoding an audio signal and computer program using cascaded audio object processing stages 有权Tonsignaldekodierer，方法用于解码音频信号，和计算机程序与级联Tonobjektverarbeitungsphasen
公开(公告)号：EP2535892B1
公开(公告)日：2014-08-27
申请号：EP12183562.3
申请日：2010-06-23
发明人： Hellmuth, Oliver , Falch, Cornelia , Herre, Jürgen , Hilpert, Johannes , Ridderbusch, Falko , Terentiv, Leonid
IPC分类号： G10L19/008 , G10L19/20 , H04S7/00 , G10H1/36
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.
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公开(公告)号：EP2384028A3
公开(公告)日：2012-10-24
申请号：EP11168513.7
申请日：2009-07-30
CPC分类号： H04S3/004 , H04S7/30 , H04S2400/01 , H04S2420/01
摘要： A device for generating a binaural signal based on a multi-channel signal representing a plurality of channels and intended for reproduction by a speaker configuration having a virtual sound source position associated to each channel, is described. It comprises a correlation reducer for differently processing, and thereby reducing a correlation between, at least one of a left and a right channel of the plurality of channels, a front and a rear channel of the plurality of channels, and a center and a non-center channel of the plurality of channels, in order to obtain an inter-similarity reduced set of channels; a plurality of directional filters, a first mixer for mixing outputs of the directional filters modeling the acoustic transmission to the first ear canal of the listener, and a second mixer for mixing outputs of the directional filters modeling the acoustic transmission to the second ear canal of the listener. According to another aspect, a center level reduction for forming the downmix for a room processor is performed. According to even another aspect, an inter-similarity decreasing set of head-related transfer functions is formed.
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87.发明公开Audio encoding/decoding scheme having a switchable bypass 有权Audiokodierungs - / - dekodierungsschema mit schaltbarerÜberbrückung
公开(公告)号：EP2146344A1
公开(公告)日：2010-01-20
申请号：EP09002270.8
申请日：2009-02-18
发明人： Grill, Bernhard , Bayer, Stefan , Fuchs, Guillaume , Geyersberger, Stefan , Geiger, Ralf , Hilpert, Johannes , Krämer, Ulrich , Lecomte, Jeremie , Multrus, Markus , Neuendorf, Max , Popp, Harald , Rettelbach, Nikolaus , Lefebvre, Roch , Bessette, Bruno , Lapierre, Jimmy , Gournay, Philippe , Salami, Redwan
IPC分类号： G10L19/14
CPC分类号： G10L19/173 , G10L19/0017 , G10L19/008 , G10L19/0212 , G10L19/18 , G10L2019/0008
摘要： An apparatus for encoding comprises a first domain converter (510), a switchable bypass (50), a second domain converter (410), a first processor (420) and a second processor (520) to obtain an encoded audio signal having different signal portions represented by coded data in different domains, which have been coded by different coding algorithms. Corresponding decoding stages in the decoder together with a bypass for bypassing a domain converter allow the generation of a decoded audio signal with high quality and low bit rate.
摘要翻译： 一种用于编码的装置，包括第一域转换器（510），可切换旁路（50），第二域转换器（410），第一处理器（420）和第二处理器（520），以获得具有不同信号的编码音频信号 由不同域中的编码数据表示的部分，其已经由不同的编码算法编码。 解码器中的对应的解码级以及用于绕过域转换器的旁路允许生成具有高质量和低比特率的解码音频信号。
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公开(公告)号：EP2034473A2
公开(公告)日：2009-03-11
申请号：EP08021083.4
申请日：2005-02-17
IPC分类号： G10L19/02
CPC分类号： G10L19/025 , G10L19/002
摘要： Zum Ermitteln eines Schätzwerts für einen Bedarf an Informationseinheiten zum Codieren eines Signals wird neben der erlaubten Störung für ein Frequenzband und einer Energie des Frequenzbands zusätzlich ein Maß (nl(b)) für die Verteilung der Energie in dem Frequenzband berücksichtigt (102, 104, 106). Damit wird ein besserer Schätzwert für den Bedarf an Informationseinheiten erhalten, so dass effizienter und genauer codiert werden kann.
摘要翻译： 该装置和方法用于视频或音频信号（100）。 第一步骤（102）提供容许干扰（nb（b））和给定频带（e（b））中的信号能量的电平。 在从第三步骤（106）接收频带能量分布信号（n1（b））的第二步骤（104）中处理这些信号，并计算估计值（pe）。
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89.发明授权VORRICHTUNG UND VERFAHREN ZUR WIEDERHERSTELLUNG EINES MULTIKANAL-AUDIOSIGNALS UND ZUM ERZEUGEN EINES PARAMETERDATENSATZES HIERFÜR 有权装置和方法进行恢复的多声道音频信号，并产生一个参数数据为此作出
公开(公告)号：EP1687809B1
公开(公告)日：2008-10-01
申请号：EP05782843.6
申请日：2005-08-10
发明人： Sperschneider, Ralph , Herre, Jürgen , Hilpert, Johannes , Ertel, Christian , Geyersberger, Stefan
CPC分类号： G10L19/008
摘要： In order to carry out a flexible signaling of a synchronous mode or of an asynchronous mode during multichannel parameter reconstruction, a parameter configuration instruction is inserted into the data flow and is used by a configuration device on the part of a multichannel decoder for configuring a multichannel reconstruction device. If the parameter configuration instruction has a first meaning, the configuration device searches within its input data for additional items of configuration information whereas, when the parameter configuration instruction has another meaning, the configuration device, based on items of information concerning an encoding algorithm with which transmission channel data have been encoded, carry out a configuration setting of the multichannel reconstruction device whereby efficiently and flexibly ensuring that a correct allocation between parameter data and decoded transmission channel data is always maintained.
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90.发明公开Verfahren zum Bilden einer Darstellung eines von einem Quadrat eines Wertes linear abhängigen Berechnungsergebnisses 审中-公开上的值计算结果的平方形成线性相关的表示的方法
公开(公告)号：EP1843246A3
公开(公告)日：2008-01-02
申请号：EP07013279.0
申请日：2005-12-13
发明人： Gayer, Marc , Lutzky, Manfred , Lohwasser, Markus , Disch, Sascha , Hilpert, Johannes , Geyersberger, Stefan , Grill, Bernhard
CPC分类号： G06F7/544 , G06F7/49936 , G06F7/49942 , G06F7/5443 , G10L19/02
摘要： Bei dem Übergang in den logarithmischen Bereich muss nicht die gesamte Bitbreite des von dem Quadrat des Wertes linear abhängigen Ergebnisses berücksichtigt werden. Vielmehr ist es möglich, bei einem Wert mit x Bits eine Skalierung des Ergebnisses derart vorzunehmen, dass eine Darstellung mit weniger als x Bits des Ergebnisses ausreichend ist, um basierend auf demselben die logarithmische Darstellung zu gewinnen. Die Auswirkung des Skalierungsfaktors auf die sich ergebende logarithmische Darstellung kann durch Addieren oder Subtrahieren eines durch die Logarithmusfunktion angewendet auf den Skalierungsfaktor gewonnenen Korrekturwertes zu bzw. von der skalierten logarithmischen Darstellung ohne Dynamikverlust aufgehoben werden. Auf diese Weise werden ein Verfahren und eine Vorrichtung zum Bilden einer Darstellung eines von einem Quadrat eines Wertes linear abhängigen Ergebnisses geschaffen, so dass die Berechnung einfach bzw. mit wenig Hardwareaufwand möglich ist.
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