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1. 发明授权

US08606586B2 Bandwidth extension encoder for encoding an audio signal using a window controller 有权
标题翻译：带宽扩展编码器，用于使用窗口控制器对音频信号进行编码
公开(公告)号：US08606586B2
公开(公告)日：2013-12-10
申请号：US13335096
申请日：2011-12-22
申请人： Frederik Nagel , Markus Multrus , Sascha Disch , Jeremie Lecomte , Christian Ertel , Patrick Warmbold
发明人： Frederik Nagel , Markus Multrus , Sascha Disch , Jeremie Lecomte , Christian Ertel , Patrick Warmbold
IPC分类号： G10L19/02 , G10L19/00
CPC分类号： G10L21/038 , G10L19/0208 , G10L19/022 , G10L19/20 , G10L19/24 , G10L21/04
摘要： A bandwidth extension encoder for encoding an audio signal has a signal analyzer, a core encoder, a parameter calculator, and a window controller. The audio signal has a low frequency signal having a core frequency band and a high frequency signal having an upper frequency band. The signal analyzer is configured for analyzing the audio signal, the audio signal having a block of audio samples, the block having a specified length in time. The signal analyzer is furthermore configured for determining from a plurality of analysis windows an analysis window to be used for performing a bandwidth extension in a bandwidth extension decoder. The core encoder is configured for encoding the low frequency signal to acquire an encoded or frequency signal. The parameter calculator is configured for calculating bandwidth extension parameters from the high frequency signal. The window controller is configured to provide control information indicating analysis window functions.
摘要翻译：用于编码音频信号的带宽扩展编码器具有信号分析器，核心编码器，参数计算器和窗口控制器。音频信号具有具有核心频带的低频信号和具有较高频带的高频信号。信号分析器被配置用于分析音频信号，音频信号具有音频样本块，该块具有指定的时间长度。信号分析器还被配置用于从多个分析窗口确定要用于在带宽扩展解码器中执行带宽扩展的分析窗口。核心编码器被配置为对低频信号进行编码以获取编码或频率信号。参数计算器用于从高频信号计算带宽扩展参数。窗口控制器被配置为提供指示分析窗口功能的控制信息。

2. 发明申请

US20120158409A1 Bandwidth Extension Encoder, Bandwidth Extension Decoder and Phase Vocoder 有权
标题翻译：带宽扩展编码器，带宽扩展解码器和相位声码器
公开(公告)号：US20120158409A1
公开(公告)日：2012-06-21
申请号：US13335096
申请日：2011-12-22
申请人： Frederik Nagel , Markus Multrus , Sascha Disch , Jeremie Lecomte , Christian Ertel , Patrick Warmbold
发明人： Frederik Nagel , Markus Multrus , Sascha Disch , Jeremie Lecomte , Christian Ertel , Patrick Warmbold
IPC分类号： G10L19/00
CPC分类号： G10L21/038 , G10L19/0208 , G10L19/022 , G10L19/20 , G10L19/24 , G10L21/04
摘要： A bandwidth extension encoder for encoding an audio signal has a signal analyzer, a core encoder and a parameter calculator. The audio signal has a low frequency signal having a core frequency band and a high frequency signal having an upper frequency band. The signal analyzer is configured for analyzing the audio signal, the audio signal having a block of audio samples, the block having a specified length in time. The signal analyzer is furthermore configured for determining from a plurality of analysis windows an analysis window to be used for performing a bandwidth extension in a bandwidth extension decoder. The core encoder is configured for encoding the low frequency signal to acquire an encoded or frequency signal. The parameter calculator is configured for calculating bandwidth extension parameters from the high frequency signal.
摘要翻译：用于编码音频信号的带宽扩展编码器具有信号分析器，核心编码器和参数计算器。音频信号具有具有核心频带的低频信号和具有较高频带的高频信号。信号分析器被配置用于分析音频信号，音频信号具有音频样本块，该块具有指定的时间长度。信号分析器还被配置用于从多个分析窗口确定要用于在带宽扩展解码器中执行带宽扩展的分析窗口。核心编码器被配置为对低频信号进行编码以获取编码或频率信号。参数计算器用于从高频信号计算带宽扩展参数。

3. 发明申请

US20060004583A1 Multi-channel synthesizer and method for generating a multi-channel output signal 有权
标题翻译：用于产生多通道输出信号的多通道合成器和方法
公开(公告)号：US20060004583A1
公开(公告)日：2006-01-05
申请号：US10883538
申请日：2004-06-30
申请人： Juergen Herre , Sascha Disch , Johannes Hilpert , Christian Ertel , Andreas Hoelzer , Claus-Christian Spenger
发明人： Juergen Herre , Sascha Disch , Johannes Hilpert , Christian Ertel , Andreas Hoelzer , Claus-Christian Spenger
IPC分类号： G10L19/14
CPC分类号： H04S3/008 , G10L19/008 , H04S2420/03
摘要： A multi-channel synthesizer includes a post processor for determining post processed reconstruction parameters or quantities derived from the reconstruction parameter for an actual time portion of the input signal so that the post processed reconstruction parameter or the post processed quantity is different from the corresponding quantized and inversely quantized reconstruction parameter in that the value of the post processed reconstruction parameter or the derived quantity is not bound by the quantization step size. A multi-channel reconstructor uses the post-processed reconstruction parameter for reconstructing the multi-channel output signal. By post processing reconstruction parameters in connection with multi-channel encoding/decoding allows a low data rate on the one hand and a high quality on the other hand, since strong changes in the reconstructed multi-channel output signal because of a large quantization step size for the reconstruction parameter, which is preferable because of low bit rate requirements, are reduced.
摘要翻译：多通道合成器包括用于确定后处理的重构参数的后处理器或者对于输入信号的实际时间部分从重建参数导出的量，使得后处理的重构参数或后处理量与相应的量化和反量化重建参数，因为后处理重构参数或导出量的值不受量化步长的约束。多通道重建器使用后处理重构参数来重建多通道输出信号。通过后处理，与多信道编码/解码相关的重构参数一方面允许低数据速率和高质量，因为由于大量化步长而导致的重构多通道输出信号的强烈变化对于由于低比特率要求而优选的重构参数被减少。

4. 发明授权

US08843378B2 Multi-channel synthesizer and method for generating a multi-channel output signal 有权
标题翻译：用于产生多通道输出信号的多通道合成器和方法
公开(公告)号：US08843378B2
公开(公告)日：2014-09-23
申请号：US10883538
申请日：2004-06-30
申请人： Juergen Herre , Sascha Disch , Johannes Hilpert , Christian Ertel , Andreas Hoelzer , Claus-Christian Spenger
发明人： Juergen Herre , Sascha Disch , Johannes Hilpert , Christian Ertel , Andreas Hoelzer , Claus-Christian Spenger
IPC分类号： G06F15/00 , G10L19/00 , G10L21/00 , H04H40/54 , H04R5/00 , H04S3/00 , G10L19/008
CPC分类号： H04S3/008 , G10L19/008 , H04S2420/03
摘要： A multi-channel synthesizer includes a post processor for determining post processed reconstruction parameters or quantities derived from the reconstruction parameter for an actual time portion of the input signal so that the post processed reconstruction parameter or the post processed quantity is different from the corresponding quantized and inversely quantized reconstruction parameter in that the value of the post processed reconstruction parameter or the derived quantity is not bound by the quantization step size. A multi-channel reconstructor uses the post-processed reconstruction parameter for reconstructing the multi-channel output signal. By post processing reconstruction parameters in connection with multi-channel encoding/decoding allows a low data rate on the one hand and a high quality on the other hand, since strong changes in the reconstructed multi-channel output signal because of a large quantization step size for the reconstruction parameter, which is preferable because of low bit rate requirements, are reduced.
摘要翻译：多通道合成器包括用于确定后处理的重构参数的后处理器或者对于输入信号的实际时间部分从重建参数导出的量，使得后处理的重构参数或后处理量与相应的量化和反量化重建参数，因为后处理重构参数或导出量的值不受量化步长的约束。多通道重建器使用后处理重构参数来重建多通道输出信号。通过后处理，与多信道编码/解码相关的重构参数一方面允许低数据速率和高质量，因为由于大量化步长而导致的重构多通道输出信号的强烈变化对于由于低比特率要求而优选的重构参数被减少。

5. 发明授权

US08731204B2 Device and method for generating a multi-channel signal or a parameter data set 有权
标题翻译：用于产生多声道信号或参数数据组的装置和方法
公开(公告)号：US08731204B2
公开(公告)日：2014-05-20
申请号：US11683741
申请日：2007-03-08
申请人： Ralph Sperschneider , Juergen Herre , Johannes Hilpert , Christian Ertel , Stefan Geyersberger
发明人： Ralph Sperschneider , Juergen Herre , Johannes Hilpert , Christian Ertel , Stefan Geyersberger
IPC分类号： H04R5/00
CPC分类号： G10L19/008
摘要： For flexibly signaling a synchronous mode or an asynchronous mode in the multi-channel parameter reconstruction, a parameter configuration cue is inserted in the data stream, which is used by a configurator on the side of a multi-channel decoder to configure a multi-channel reconstructor. If the parameter configuration cue has a first meaning, the configurator will look for further configuration information in its input data, while, when the parameter configuration cue has another meaning, the configurator performs a configuration setting of the multi-channel reconstructor based on information on a coding algorithm with which transmission channel data have been coded, so that it is ensured efficiently on the one hand and flexibly on the other hand that there will always be obtained a correct association between parameter data and decoded transmission channel data.
摘要翻译：为了在多信道参数重建中灵活地发信号通知同步模式或异步模式，参数配置提示被插入数据流中，由多通道解码器侧的配置器使用该配置提示来配置多通道重建。如果参数配置提示具有第一个含义，则配置器将在其输入数据中查找更多配置信息，而当参数配置提示具有其他含义时，配置器将根据有关信息的信息执行多通道重建器的配置设置已经编码了传输信道数据的编码算法，从而一方面有效地确保并且灵活地确保总是获得参数数据和解码的传输信道数据之间的正确关联。

6. 发明授权

US08321207B2 Device and method for postprocessing spectral values and encoder and decoder for audio signals 有权
标题翻译：用于后处理光谱值的装置和方法以及用于音频信号的编码器和解码器
公开(公告)号：US08321207B2
公开(公告)日：2012-11-27
申请号：US12446772
申请日：2007-09-28
申请人： Bernd Edler , Ralf Geiger , Christian Ertel , Johannes Hilpert , Harald Popp
发明人： Bernd Edler , Ralf Geiger , Christian Ertel , Johannes Hilpert , Harald Popp
IPC分类号： G10L19/02 , G10L19/14
CPC分类号： G10L19/26 , G10L19/0017 , G10L19/24 , G10L19/265
摘要： For postprocessing spectral values which are based on a first transformation algorithm for converting the audio signal into a spectral representation, first a sequence of blocks of the spectral values representing a sequence of blocks of samples of the audio signal are provided. Hereupon, a weighted addition of spectral values of the sequence of blocks of spectral values is performed in order to obtain a sequence of blocks of postprocessed spectral values, wherein the combination is performed such that for calculating a postprocessed spectral value for a frequency band and a time duration a spectral value of the sequence of blocks for the frequency band and the time duration and a spectral value for another frequency band or another time duration are used, wherein the combination is further performed such that such weighting factors are used that the postprocessed spectral values are an approximation to the spectral values as they are obtained by converting the audio signal into a spectral representation using a second transformation algorithm which is different from the first transformation algorithm. The postprocessed spectral values are in particular used for a difference formation within a scalable encoder or for an addition within a scalable decoder, respectively.
摘要翻译：对于基于用于将音频信号转换成频谱表示的第一变换算法的后处理频谱值，首先提供表示音频信号的采样块序列的频谱值的块序列。因此，执行频谱值块序列的频谱值的加权相加以获得后处理频谱值的块序列，其中执行组合使得用于计算频带和后处理频谱值的后处理频谱值时间持续时间使用用于频带的块序列的频谱值和持续时间以及另一频带或另一持续时间的频谱值，其中进一步执行组合，使得使用这些加权因子后处理的频谱值是对频谱值的近似，因为它们是通过使用不同于第一变换算法的第二变换算法将音频信号转换成频谱表示而获得的。后处理的频谱值特别用于可分级编码器内的差分形成或分别用于可扩展解码器内的加法。

7. 发明申请

US20100017213A1 DEVICE AND METHOD FOR POSTPROCESSING SPECTRAL VALUES AND ENCODER AND DECODER FOR AUDIO SIGNALS 有权
标题翻译：用于放置光谱值的编码器和编码器的装置和方法
公开(公告)号：US20100017213A1
公开(公告)日：2010-01-21
申请号：US12446772
申请日：2007-09-28
申请人： Bernd Edler , Ralf Geiger , Christian Ertel , Johannes Hilpert , Harald Popp
发明人： Bernd Edler , Ralf Geiger , Christian Ertel , Johannes Hilpert , Harald Popp
IPC分类号： G10L21/00
CPC分类号： G10L19/26 , G10L19/0017 , G10L19/24 , G10L19/265
摘要： For postprocessing spectral values which are based on a first transformation algorithm for converting the audio signal into a spectral representation, first a sequence of blocks of the spectral values representing a sequence of blocks of samples of the audio signal are provided. Hereupon, a weighted addition of spectral values of the sequence of blocks of spectral values is performed in order to obtain a sequence of blocks of postprocessed spectral values, wherein the combination is performed such that for calculating a postprocessed spectral value for a frequency band and a time duration a spectral value of the sequence of blocks for the frequency band and the time duration and a spectral value for another frequency band or another time duration are used, wherein the combination is further performed such that such weighting factors are used that the postprocessed spectral values are an approximation to the spectral values as they are obtained by converting the audio signal into a spectral representation using a second transformation algorithm which is different from the first transformation algorithm. The postprocessed spectral values are in particular used for a difference formation within a scalable encoder or for an addition within a scalable decoder, respectively.
摘要翻译：对于基于用于将音频信号转换成频谱表示的第一变换算法的后处理频谱值，首先提供表示音频信号的采样块序列的频谱值的块序列。因此，执行频谱值块序列的频谱值的加权相加以获得后处理频谱值的块序列，其中执行组合使得用于计算频带和后处理频谱值的后处理频谱值时间持续时间使用用于频带的块序列的频谱值和持续时间以及另一频带或另一持续时间的频谱值，其中进一步执行组合，使得使用这些加权因子后处理的频谱值是对频谱值的近似，因为它们是通过使用不同于第一变换算法的第二变换算法将音频信号转换成频谱表示而获得的。后处理的频谱值特别用于可分级编码器内的差分形成或分别用于可扩展解码器内的加法。

8. 发明申请

US20070206690A1 DEVICE AND METHOD FOR GENERATING A MULTI-CHANNEL SIGNAL OR A PARAMETER DATA SET 有权
标题翻译：用于产生多信道信号或参数数据集的装置和方法
公开(公告)号：US20070206690A1
公开(公告)日：2007-09-06
申请号：US11683741
申请日：2007-03-08
申请人： Ralph Sperschneider , Juergen Herre , Johannes Hilpert , Christian Ertel , Stefan Geyersberger
发明人： Ralph Sperschneider , Juergen Herre , Johannes Hilpert , Christian Ertel , Stefan Geyersberger
IPC分类号： H04K1/10 , H04B14/04
CPC分类号： G10L19/008
摘要： For flexibly signaling a synchronous mode or an asynchronous mode in the multi-channel parameter reconstruction, a parameter configuration cue is inserted in the data stream, which is used by a configurator on the side of a multi-channel decoder to configure a multi-channel reconstructor. If the parameter configuration cue has a first meaning, the configurator will look for further configuration information in its input data, while, when the parameter configuration cue has another meaning, the configurator performs a configuration setting of the multi-channel reconstructor based on information on a coding algorithm with which transmission channel data have been coded, so that it is ensured efficiently on the one hand and flexibly on the other hand that there will always be obtained a correct association between parameter data and decoded transmission channel data.
摘要翻译：为了在多信道参数重建中灵活地发信号通知同步模式或异步模式，参数配置提示被插入数据流中，由多通道解码器侧的配置器使用该配置提示来配置多通道重建。如果参数配置提示具有第一个含义，则配置器将在其输入数据中查找更多配置信息，而当参数配置提示具有其他含义时，配置器将根据有关信息的信息执行多通道重建器的配置设置已经编码了传输信道数据的编码算法，从而一方面有效地确保并且灵活地确保总是获得参数数据和解码的传输信道数据之间的正确关联。

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