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21. 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。

22. 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。

23. 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。

24. 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。

25. 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。

26. 发明申请

US20070129940A1 Method and apparatus for determining an estimate 有权
标题翻译：用于确定估计的方法和装置
公开(公告)号：US20070129940A1
公开(公告)日：2007-06-07
申请号：US11469418
申请日：2006-08-31
申请人： Michael Schug , Johannes Hilpert , Stefan Geyersberger , Max Neuendorf
发明人： Michael Schug , Johannes Hilpert , Stefan Geyersberger , Max Neuendorf
IPC分类号： G10L19/14
CPC分类号： G10L19/025 , G10L19/002
摘要： For determining an estimate of a need for information units for encoding a signal, a measure for the distribution of the energy in the frequency band is taken into account in addition to the admissible interference for a frequency band and an energy of the frequency band. With this, a better estimate of the need for information units is obtained, so that coding can be done more efficiently and more accurately.
摘要翻译：为了确定对信号进行编码的信息单元的需求的估计，除了对于频带的容许干扰和频带的能量之外，还考虑了频带中的能量分布的度量。因此，获得对信息单元的更好的估计，使得可以更有效和更准确地进行编码。

27. 发明申请

US20050074127A1 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：US20050074127A1
公开(公告)日：2005-04-07
申请号：US10679085
申请日：2003-10-02
申请人： Jurgen Herre , Johannes Hilpert , Stefan Geyersberger , Andreas Holzer , Claus Spenger
发明人： Jurgen Herre , Johannes Hilpert , Stefan Geyersberger , Andreas Holzer , Claus Spenger
IPC分类号： H04S3/00 , H04S3/02 , H04R5/00
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 of the original channels, 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. Since the channel side information only occupy a low number of bits, and since the decoder does not use dematrixing, an efficient and high quality multi-channel extension for stereo players and enhanced multi-channel players is obtained.
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。对于原始频道的所选择的原始频道，计算频道侧信息，使得当使用频道侧信息加权时，包括第一和第二下混频道的下混频道或组合缩混频道导致所选原稿的近似渠道。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。由于信道侧信息仅占用少量的比特，并且由于解码器不使用解矩阵，因此可以获得用于立体声播放器和增强型多声道播放器的有效且高质量的多声道扩展。

28. 发明授权

US07707030B2 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：US07707030B2
公开(公告)日：2010-04-27
申请号：US11044786
申请日：2005-01-26
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。

29. 发明授权

US07447317B2 Compatible multi-channel coding/decoding by weighting the downmix channel 有权
标题翻译：通过对下混通道进行加权来兼容多通道编码/解码
公开(公告)号：US07447317B2
公开(公告)日：2008-11-04
申请号：US10679085
申请日：2003-10-02
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 , G10L11/00 , G10L21/02 , H04R5/00 , G06F17/00
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 of the original channels, 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。对于原始频道的所选择的原始频道，计算频道侧信息，使得当使用频道侧信息加权时，包括第一和第二下混频道的下混频道或组合缩混频道导致所选原稿的近似渠道。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。

30. 发明授权

US07318028B2 Method and apparatus for determining an estimate 有权
标题翻译：用于确定估计的方法和装置
公开(公告)号：US07318028B2
公开(公告)日：2008-01-08
申请号：US11469418
申请日：2006-08-31
申请人： Michael Schug , Johannes Hilpert , Stefan Geyersberger , Max Neuendorf
发明人： Michael Schug , Johannes Hilpert , Stefan Geyersberger , Max Neuendorf
IPC分类号： G10L19/00
CPC分类号： G10L19/025 , G10L19/002
摘要： For determining an estimate of a need for information units for encoding a signal, a measure for the distribution of the energy in the frequency band is taken into account in addition to the admissible interference for a frequency band and an energy of the frequency band. With this, a better estimate of the need for information units is obtained, so that coding can be done more efficiently and more accurately.
摘要翻译：为了确定对信号进行编码的信息单元的需求的估计，除了对于频带的容许干扰和频带的能量之外，还考虑了频带中的能量分布的度量。因此，获得对信息单元的更好的估计，使得可以更有效和更准确地进行编码。

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