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1. 发明授权

US09462404B2 Compatible multi-channel coding/decoding 有权
标题翻译：兼容多通道编码/解码
公开(公告)号：US09462404B2
公开(公告)日：2016-10-04
申请号：US13588139
申请日：2012-08-17
申请人： Jürgen Herre , Johannes Hilpert , Stefan Geyersberger , Andreas Hölzer , Claus Spenger
发明人： Jürgen Herre , Johannes Hilpert , Stefan Geyersberger , Andreas Hölzer , Claus Spenger
IPC分类号： G10L19/00 , H04S3/00 , H04S3/02 , G10L19/008
CPC分类号： H04S3/02 , G10L19/008 , G10L19/032 , H04S3/008 , H04S2400/03 , H04S2420/03
摘要： In processing a multi-channel audio signal having at least three original channels, a first downmix channel and a second downmix channel are provided, which are derived from the original channels. For a selected original channel, channel side information are calculated such that a downmix channel or a combined downmix channel including the first and the second downmix channels, when weighted using the channel side information, results in an approximation of the selected original channel. The channel side information and the first and second downmix channels form output data to be transmitted to a decoder, which, in case of a low level decoder only decodes the first and second downmix channels or, in case of a high level decoder provides a full multi-channel audio signal based on the downmix channels and the channel side information.
摘要翻译：在处理具有至少三个原始信道的多声道音频信号时，提供从原始信道导出的第一下混通道和第二下混通道。对于所选择的原始信道，计算信道侧信息，使得当使用信道侧信息加权时，包括第一和第二下混通道的下混通道或组合下混通道导致所选原始通道的近似。信道侧信息以及第一和第二下混通道形成要发送到解码器的输出数据，其在低电平解码器的情况下仅解码第一和第二下混通道，或者在高电平解码器提供满基于下混频道的多声道音频信号和频道侧信息。

2. 发明授权

US09326085B2 Device and method for generating an ambience signal 有权
公开(公告)号：US09326085B2
公开(公告)日：2016-04-26
申请号：US13442649
申请日：2012-04-09
申请人： Juergen Herre , Stefan Geyersberger , Oliver Hellmuth , Andreas Walther , Christiaan Janssen
发明人： Juergen Herre , Stefan Geyersberger , Oliver Hellmuth , Andreas Walther , Christiaan Janssen
IPC分类号： H04S5/00 , G10L19/008 , H04R5/04
CPC分类号： H04S5/005 , G10L19/008 , H04R5/04
摘要： A transient detector is provided for generating an ambience signal suitable for being emitted via loudspeakers for which there is no special loudspeaker signal to detect a transient period. A synthesis signal generator produces a synthesis signal which fulfills the transient condition on the one hand and the continuity condition for the synthesis signal on the other hand. A signal substituter will then substitute a portion of the examination signal by the synthesis signal to obtain an ambience signal for the surround channels.

3. 发明授权

US08155954B2 Device and method for generating a complex spectral representation of a discrete-time signal 有权
标题翻译：用于产生离散时间信号的复谱图表示的装置和方法
公开(公告)号：US08155954B2
公开(公告)日：2012-04-10
申请号：US12717892
申请日：2010-03-04
申请人： Bernd Edler , Stefan Geyersberger
发明人： Bernd Edler , Stefan Geyersberger
IPC分类号： G10L19/14
CPC分类号： G10L19/00 , G10L25/18 , G10L25/48
摘要： A filter bank device for generating a complex spectral representation of a discrete-time signal includes a generator for generating a block-wise real spectral representation, which, for example, implements an MDCT, to obtain temporally successive blocks of real spectral coefficients. The output values of this spectral conversion device are fed to a post-processor for post-processing the block-wise real spectral representation to obtain an approximated complex spectral representation having successive blocks, each block having a set of complex approximated spectral coefficients, wherein a complex approximated spectral coefficient can be represented by a first partial spectral coefficient and by a second partial spectral coefficient, wherein at least one of the first and second partial spectral coefficients is determined by combining at least two real spectral coefficients. A good approximation for a complex spectral representation of the discrete-time signal is obtained by combining two real spectral coefficients, preferably by a weighted linear combination, wherein additionally more degrees of freedom for optimizing the entire system are available.
摘要翻译：用于产生离散时间信号的复谱图表示的滤波器组装置包括用于生成例如实现MDCT的块式实频谱表示以获得时间上连续的实数谱系数块的发生器。该频谱转换装置的输出值被馈送到后处理器，用于后处理分块实数谱表示，以获得具有连续块的近似复数谱表示，每个块具有一组复近似频谱系数，其中a 复数近似频谱系数可以由第一部分频谱系数和第二部分频谱系数表示，其中通过组合至少两个实际频谱系数来确定第一和第二部分频谱系数中的至少一个。通过组合两个实际频谱系数，优选地通过加权线性组合来获得离散时间信号的复谱图表示的良好近似，其中另外更多的自由度用于优化整个系统是可用的。

4. 发明申请

US20090080666A1 APPARATUS AND METHOD FOR EXTRACTING AN AMBIENT SIGNAL IN AN APPARATUS AND METHOD FOR OBTAINING WEIGHTING COEFFICIENTS FOR EXTRACTING AN AMBIENT SIGNAL AND COMPUTER PROGRAM 有权
标题翻译：用于提取装置的环境信号的装置和方法以及用于获取提取环境信号和计算机程序的加权系数的方法
公开(公告)号：US20090080666A1
公开(公告)日：2009-03-26
申请号：US12055787
申请日：2008-03-26
申请人： Christian Uhle , Juergen Herre , Stefan Geyersberger , Falko Ridderbusch , Andreas Walter , Oliver Moser
发明人： Christian Uhle , Juergen Herre , Stefan Geyersberger , Falko Ridderbusch , Andreas Walter , Oliver Moser
IPC分类号： H04R5/04
CPC分类号： H04R5/04
摘要： An apparatus for extracting an ambient signal from an input audio signal comprises a gain-value determinator configured to determine a sequence of time-varying ambient signal gain values for a given frequency band of the time-frequency distribution of the input audio signal in dependence on the input audio signal. The apparatus comprises a weighter configured to weight one of the sub-band signals representing the given frequency band of the time-frequency-domain representation with the time-varying gain values, to obtain a weighted sub-band signal. The gain-value determinator is configured to obtain one or more quantitative feature-values describing one or more features of the input audio signal and to provide the gain-value as a function of the one or more quantitative feature values such that the gain values are quantitatively dependent on the quantitative values. The gain value determinator is configured to determine the gain values such that ambience components are emphasized over non-ambience components in the weighted sub-band signal.
摘要翻译：一种用于从输入音频信号中提取环境信号的装置包括：增益值确定器，被配置为根据输入音频信号的时间 - 频率分布的给定频带来确定时变环境信号增益值的序列，依赖于输入音频信号。该装置包括被配置为将表示时间 - 频域表示的给定频带的子带信号中的一个与时变增益值加权的权重器，以获得加权子带信号。增益值确定器被配置为获得描述输入音频信号的一个或多个特征的一个或多个定量特征值，并且将增益值提供为一个或多个定量特征值的函数，使得增益值为定量依赖于定量值。增益值确定器被配置为确定增益值，使得氛围分量在加权子带信号中的非环境分量上被强调。

5. 发明申请

US20070121448A1 Apparatus and Method for Writing onto an Audio CD, and Audio CD 有权
标题翻译：用于写入音频CD和音频CD的装置和方法
公开(公告)号：US20070121448A1
公开(公告)日：2007-05-31
申请号：US11465742
申请日：2006-08-18
申请人： Harald Popp , Stefan Geyersberger , Wolfgang Fiesel
发明人： Harald Popp , Stefan Geyersberger , Wolfgang Fiesel
IPC分类号： G11B20/00
CPC分类号： G11B20/10527 , G11B27/034 , G11B27/3063 , G11B2020/10546 , G11B2020/10592 , G11B2220/2545
摘要： Parametric multichannel information is written onto a normal standard audio compact disc, e.g. in the user subchannels, so that the CD enables normal stereo reproduction with a normal reproduction device, or multichannel reproduction with a supplementary device which is easy to connect and which reads out both the stereo information and the parametric multichannel information from the audio CD actually conforming with the standard, and reconstructs more than two audio channels therefrom.
摘要翻译：参数化多通道信息被写入普通标准音频光盘，例如在用户子信道中，使得CD能够利用正常再现设备进行正常的立体声再现，或者使用容易连接的辅助设备进行多声道再现，并且从实际符合的音频CD读出立体声信息和参数化多声道信息具有标准，并重构两个以上的音频通道。

6. 发明授权

US08989881B2 Apparatus and method for writing onto an audio CD, and audio CD 有权
标题翻译：用于写入音频CD和音频CD的装置和方法
公开(公告)号：US08989881B2
公开(公告)日：2015-03-24
申请号：US11465742
申请日：2006-08-18
申请人： Harald Popp , Stefan Geyersberger , Wolfgang Fiesel
发明人： Harald Popp , Stefan Geyersberger , Wolfgang Fiesel
IPC分类号： G06F17/00 , H04R5/00 , G11B20/00 , G11B20/10 , G11B20/12 , G11B27/034 , G11B27/30
CPC分类号： G11B20/10527 , G11B27/034 , G11B27/3063 , G11B2020/10546 , G11B2020/10592 , G11B2220/2545
摘要： Parametric multichannel information is written onto a normal standard audio compact disc, e.g. in the user subchannels, so that the CD enables normal stereo reproduction with a normal reproduction device, or multichannel reproduction with a supplementary device which is easy to connect and which reads out both the stereo information and the parametric multichannel information from the audio CD actually conforming with the standard, and reconstructs more than two audio channels therefrom.
摘要翻译：参数化多通道信息被写入普通标准音频光盘，例如在用户子信道中，使得CD能够利用正常再现设备进行正常的立体声再现，或者使用容易连接的辅助设备进行多声道再现，并且从实际符合的音频CD读出立体声信息和参数化多声道信息具有标准，并重构两个以上的音频通道。

7. 发明申请

US20120195434A1 DEVICE AND METHOD FOR GENERATING AN AMBIENCE SIGNAL 有权
标题翻译：用于产生安全信号的装置和方法
公开(公告)号：US20120195434A1
公开(公告)日：2012-08-02
申请号：US13442649
申请日：2012-04-09
申请人： Juergen HERRE , Stefan GEYERSBERGER , Oliver HELLMUTH , Andreas WALTHER , Christiaan JANSSEN
发明人： Juergen HERRE , Stefan GEYERSBERGER , Oliver HELLMUTH , Andreas WALTHER , Christiaan JANSSEN
IPC分类号： H04R5/00
CPC分类号： H04S5/005 , G10L19/008 , H04R5/04
摘要： A transient detector is provided for generating an ambience signal suitable for being emitted via loudspeakers for which there is no special loudspeaker signal to detect a transient period. A synthesis signal generator produces a synthesis signal which fulfils the transient condition on the one hand and the continuity condition for the synthesis signal on the other hand. A signal substituter will then substitute a portion of the examination signal by the synthesis signal to obtain an ambience signal for the surround channels.
摘要翻译：提供了一种瞬态检测器，用于产生适于通过不具有特殊扬声器信号的扬声器发射以检测瞬态周期的环境信号。合成信号发生器产生合成信号，一方面满足瞬态条件和另一方面合成信号的连续性条件。然后，信号取代器将通过合成信号替换检查信号的一部分，以获得环绕声道的环境信号。

8. 发明授权

US08037114B2 Method for creating a representation of a calculation result linearly dependent upon a square of a value 有权
标题翻译：用于根据值的平方线性地创建计算结果的表示的方法
公开(公告)号：US08037114B2
公开(公告)日：2011-10-11
申请号：US11762690
申请日：2007-06-13
申请人： Marc Gayer , Manfred Lutzky , Markus Lohwasser , Sascha Disch , Johannes Hilpert , Stefan Geyersberger , Bernhard Grill
发明人： Marc Gayer , Manfred Lutzky , Markus Lohwasser , Sascha Disch , Johannes Hilpert , Stefan Geyersberger , Bernhard Grill
IPC分类号： G06F15/00
CPC分类号： G06F7/544 , G06F7/49936 , G06F7/49942 , G06F7/5443 , G10L19/02
摘要： In the transition into the logarithmic range, not the entire bit width of the result linearly dependent upon the square of the value must be considered. Rather, it is possible to scale the result of a value with x bits such that a representation with less than x bits of the result is sufficient to receive the logarithmic representation based thereon. The effect of the scaling factor on the resulting logarithmic representation may be compensated for by adding or subtracting a correction value received by the logarithm function applied to the scaling factor to or from the scaled logarithmic representation without any loss of dynamics. This way, a method and an apparatus for creating a representation of a result linearly dependent upon a square of a value are provided so that the calculation is simple and/or possible with little hardware expenditure.
摘要翻译：在向对数范围的转换中，必须考虑线性依赖于该值平方的结果的整数位宽度。相反，可以用x比特来缩放值的结果，使得具有小于x位的结果的表示足以基于此来接收对数表示。缩放因子对所得到的对数表示的影响可以通过将由应用于比例因子的对数函数接收的校正值加到或从缩放的对数表示中减去而没有任何动态损失来补偿。这样，提供了一种用于创建线性表示的方法和装置，该结果线性地取决于值的平方，使得在少量硬件消耗的情况下计算是简单的和/或可能的。

9. 发明申请

US20110200198A1 Low Bitrate Audio Encoding/Decoding Scheme with Common Preprocessing 有权
标题翻译：具有通用预处理的低比特率音频编码/解码方案
公开(公告)号：US20110200198A1
公开(公告)日：2011-08-18
申请号：US13004453
申请日：2011-01-11
申请人： Bernhard Grill , Stefan Bayer , Guillaume Fuchs , Stefan Geyersberger , Ralf Geiger , Johannes Hilpert , Ulrich Kraemer , Jeremie Lecomte , Markus Multrus , Max Neuendorf , Harald Popp , Nikolaus Rettelbach , Frederik Nagel , Sascha Disch , Juergen Herre , Yoshikazu Yokotani , Stefan Wabnik , Gerald Schuller , Jens Hirschfeld
发明人： Bernhard Grill , Stefan Bayer , Guillaume Fuchs , Stefan Geyersberger , Ralf Geiger , Johannes Hilpert , Ulrich Kraemer , Jeremie Lecomte , Markus Multrus , Max Neuendorf , Harald Popp , Nikolaus Rettelbach , Frederik Nagel , Sascha Disch , Juergen Herre , Yoshikazu Yokotani , Stefan Wabnik , Gerald Schuller , Jens Hirschfeld
IPC分类号： G10L19/14 , G10L21/00
CPC分类号： G10L19/173 , G10L19/0017 , G10L19/008 , G10L19/0212 , G10L19/18 , G10L2019/0008
摘要： An audio encoder has a common preprocessing stage, an information sink based encoding branch such as spectral domain encoding branch, a information source based encoding branch such as an LPC-domain encoding branch and a switch for switching between these branches at inputs into these branches or outputs of these branches controlled by a decision stage. An audio decoder has a spectral domain decoding branch, an LPC-domain decoding branch, one or more switches for switching between the branches and a common post-processing stage for post-processing a time-domain audio signal for obtaining a post-processed audio signal.
摘要翻译：音频编码器具有通用的预处理级，诸如频域编码分支的基于信息宿的编码分支，诸如LPC域编码分支的基于信息源的编码分支以及用于在这些分支的输入处切换这些分支之间的切换，或这些分支的输出由决策阶段控制。音频解码器具有频域解码分支，LPC域解码分支，用于在分支之间切换的一个或多个开关和用于后处理时域音频信号以用于获得后处理音频的公共后处理级信号。

10. 发明申请

US20110173007A1 Audio Encoder and Audio Decoder 有权
标题翻译：音频编码器和音频解码器
公开(公告)号：US20110173007A1
公开(公告)日：2011-07-14
申请号：US13004282
申请日：2011-01-11
申请人： Markus Multrus , Bernhard Grill , Guillaume Fuchs , Stefan Geyersberger , Nikolaus Rettelbach , Virgilio Bacigalupo
发明人： Markus Multrus , Bernhard Grill , Guillaume Fuchs , Stefan Geyersberger , Nikolaus Rettelbach , Virgilio Bacigalupo
IPC分类号： G10L19/00
CPC分类号： G10L19/02 , G10L19/022 , H03M7/30
摘要： An audio encoder for encoding segments of coefficients, the segments of coefficients representing different time or frequency resolutions of a sampled audio signal, the audio encoder including a processor for deriving a coding context for a currently encoded coefficient of a current segment based on a previously encoded coefficient of a previous segment, the previously encoded coefficient representing a different time or frequency resolution than the currently encoded coefficient. The audio encoder further includes an entropy encoder for entropy encoding the current coefficient based on the coding context to obtain an encoded audio stream.
摘要翻译：一种用于对系数段进行编码的音频编码器，表示采样音频信号的不同时间或频率分辨率的系数段，音频编码器包括用于基于先前编码的当前段的当前编码系数导出编码上下文的处理器前一段的系数，先前编码的系数表示与当前编码系数不同的时间或频率分辨率。音频编码器还包括熵编码器，用于基于编码上下文对当前系数进行熵编码，以获得经编码的音频流。

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