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61. 发明授权

US08756056B2 Apparatus and method for determining a quantizer step size 有权
标题翻译：用于确定量化器步长的装置和方法
公开(公告)号：US08756056B2
公开(公告)日：2014-06-17
申请号：US12496880
申请日：2009-07-02
申请人： Bernhard Grill , Michael Schug , Bodo Teichmann , Nikolaus Rettelbach
发明人： Bernhard Grill , Michael Schug , Bodo Teichmann , Nikolaus Rettelbach
IPC分类号： G10L19/032 , G10L19/002
CPC分类号： G10L19/032 , G10L2019/0005
摘要： For determining a quantizer step size for quantizing a signal including audio or video information, a first quantizer step size as well as an interference threshold are provided. Then, the actual interference introduced by the first quantizer step size is determined and compared with the interference threshold. Despite the fact that the comparison reveals that the actually introduced interference exceeds the threshold, a second, coarser quantizer step size is nevertheless used, which will then be used for quantization if it turns out that the interference introduced by the coarser, second quantizer step size falls below the threshold or falls below the interference introduced by the first quantizer step size. Thus, the quantization interference is reduced while the quantization is coarsened and, thus, the compression gain is increased.
摘要翻译：为了确定用于量化包括音频或视频信息的信号的量化器步长，提供第一量化器步长以及干扰阈值。然后，确定由第一量化器步长引入的实际干扰并将其与干扰阈值进行比较。尽管比较显示实际引入的干扰超过阈值，但是仍然使用第二较粗略的量化器步长，然后将其用于量化，如果证明由较粗的第二量化器步长引入的干扰低于阈值或低于由第一量化器步长引入的干扰。因此，量化干扰减小，而量化粗大，因此压缩增益增加。

62. 发明授权

US06980143B2 Scalable encoder and decoder for scaled stream 有权
标题翻译：可缩放编码器和解码器，用于缩放流
公开(公告)号：US06980143B2
公开(公告)日：2005-12-27
申请号：US10500942
申请日：2002-12-11
申请人： Karsten Linzmeier , Nikolaus Rettelbach , Eric Allamanche , Bernhard Grill
发明人： Karsten Linzmeier , Nikolaus Rettelbach , Eric Allamanche , Bernhard Grill
IPC分类号： G10L19/02 , H04B1/66 , H03M3/00
CPC分类号： G10L19/02 , H04B1/66
摘要： A scalable encoder having a first encoder, a decoder and a second encoder includes, above that, a phase distorter to reduce a non-linear frequency-dependent phase distortion introduced by the first encoder or by the decoder, which results in an increased difference signal of a comparator. Thus, a difference signal with less energy is obtained that the second encoder can encode with less bits, that is with a higher bit efficiency.
摘要翻译：具有第一编码器，解码器和第二编码器的可缩放编码器包括以下相位变形器，用于减少由第一编码器或由解码器引入的非线性频率相关相位失真，其导致增加的差信号的比较器。因此，获得具有较少能量的差信号，使得第二编码器可以以较少位编码，即具有更高的比特效率。

63. 发明申请

US20120265541A1 AUDIO SIGNAL ENCODER, AUDIO SIGNAL DECODER, METHOD FOR PROVIDING AN ENCODED REPRESENTATION OF AN AUDIO CONTENT, METHOD FOR PROVIDING A DECODED REPRESENTATION OF AN AUDIO CONTENT AND COMPUTER PROGRAM FOR USE IN LOW DELAY APPLICATIONS 有权
标题翻译：音频信号编码器，音频信号解码器，用于提供音频内容的编码表示的方法，用于提供音频内容的解码表示的方法和用于低延迟应用的计算机程序
公开(公告)号：US20120265541A1
公开(公告)日：2012-10-18
申请号：US13450792
申请日：2012-04-19
申请人： Ralf Geiger , Markus Schnell , Jeremie Lecomte , Konstantin Schmidt , Guillaume Fuchs , Nikolaus Rettelbach
发明人： Ralf Geiger , Markus Schnell , Jeremie Lecomte , Konstantin Schmidt , Guillaume Fuchs , Nikolaus Rettelbach
IPC分类号： G10L19/12
CPC分类号： G10L19/0212 , G10L19/022 , G10L19/20
摘要： An audio signal encoder includes a transform-domain path which obtains spectral coefficients and noise-shaping information on the basis of a portion of the audio content, and which windows a time-domain representation of the audio content and applies a time-domain-to-frequency-domain conversion. The audio signal decoder includes a CELP path to obtain a code-excitation information and a LPD parameter information. A converter applies a predetermined asymmetric analysis window in both if a current portion is followed by a subsequent portion to be encoded in the transform-domain mode or in the CELP mode. Aliasing cancellation information is selectively provided in the later case.
摘要翻译：音频信号编码器包括变换域路径，该变换域路径基于音频内容的一部分获得频谱系数和噪声整形信息，以及窗口是音频内容的时域表示，并将时域应用于频域转换。音频信号解码器包括用于获得码激励信息和LPD参数信息的CELP路径。如果当前部分后面是以变换域模式或CELP模式编码的后续部分，则A转换器在两者中应用预定的非对称分析窗口。在稍后的情况下有选择地提供混叠消除信息。

64. 发明授权

US08484038B2 Audio signal encoder, audio signal decoder, method for encoding or decoding an audio signal using an aliasing-cancellation 有权
标题翻译：音频信号编码器，音频信号解码器，使用混叠取消对音频信号进行编码或解码的方法
公开(公告)号：US08484038B2
公开(公告)日：2013-07-09
申请号：US13449949
申请日：2012-04-18
申请人： Bruno Bessette , Max Neuendorf , Ralf Geiger , Philippe Gournay , Roch Lefebvre , Bernhard Grill , Jeremie Lecomte , Stefan Bayer , Nikolaus Rettelbach , Lars Villemoes , Redwan Salami , Albertus C. Den Brinker
发明人： Bruno Bessette , Max Neuendorf , Ralf Geiger , Philippe Gournay , Roch Lefebvre , Bernhard Grill , Jeremie Lecomte , Stefan Bayer , Nikolaus Rettelbach , Lars Villemoes , Redwan Salami , Albertus C. Den Brinker
IPC分类号： G10L21/00 , G10L19/00
CPC分类号： G10L19/03 , G10L19/0212 , G10L19/20 , G10L2019/0008
摘要： An audio signal decoder includes a transform domain path configured to obtain a time-domain representation of a portion of an audio content on the basis of a first set of spectral coefficients, a representation of an aliasing-cancellation stimulus signal and a plurality of linear-prediction-domain parameters. The transform domain path applies a spectrum shaping to the first set of spectral coefficients to obtain a spectrally-shaped version thereof. The transform domain path obtains a time-domain representation of the audio content on the basis of the spectrally-shaped version of the first set of spectral coefficients. The transform domain path includes an aliasing-cancellation stimulus filter to filter the aliasing-cancellation stimulus signal in dependence on at least a subset of the linear-prediction-domain parameters. The transform domain path also includes a combiner configured to combine the time-domain representation of the audio content with an aliasing-cancellation synthesis signal to obtain an aliasing reduced time-domain signal.
摘要翻译：音频信号解码器包括变换域路径，被配置为基于第一组频谱系数获得音频内容的一部分的时域表示，混叠取消激励信号的表示和多个线性 - 预测域参数。变换域路径将频谱整形应用于第一组频谱系数，以获得其频谱形状的版本。变换域路径基于第一组频谱系数的频谱形式获得音频内容的时域表示。变换域路径包括混叠消除刺激滤波器，以根据线性预测域参数的至少一个子集来滤除混叠消除激励信号。变换域路径还包括组合器，其被配置为将音频内容的时域表示与混叠消除合成信号组合以获得混叠减小的时域信号。

65. 发明授权

US07574355B2 Apparatus and method for determining a quantizer step size 有权
标题翻译：用于确定量化器步长的装置和方法
公开(公告)号：US07574355B2
公开(公告)日：2009-08-11
申请号：US11514006
申请日：2006-08-30
申请人： Bernhard Grill , Michael Schug , Bodo Teichmann , Nikolaus Rettelbach
发明人： Bernhard Grill , Michael Schug , Bodo Teichmann , Nikolaus Rettelbach
IPC分类号： G10L19/14 , H04B14/00
CPC分类号： G10L19/032 , G10L2019/0005
摘要： For determining a quantizer step size for quantizing a signal including audio or video information, a first quantizer step size as well as an interference threshold are provided. Then, the actual interference introduced by the first quantizer step size is determined and compared with the interference threshold. Despite the fact that the comparison reveals that the actually introduced interference exceeds the threshold, a second, coarser quantizer step size is nevertheless used, which will then be used for quantization if it turns out that the interference introduced by the coarser, second quantizer step size falls below the threshold or falls below the interference introduced by the first quantizer step size. Thus, the quantization interference is reduced while the quantization is coarsened and, thus, the compression gain is increased.
摘要翻译：为了确定用于量化包括音频或视频信息的信号的量化器步长，提供第一量化器步长以及干扰阈值。然后，确定由第一量化器步长引入的实际干扰并将其与干扰阈值进行比较。尽管比较显示实际引入的干扰超过阈值，但是仍然使用第二较粗略的量化器步长，然后将其用于量化，如果证明由较粗的第二量化器步长引入的干扰低于阈值或低于由第一量化器步长引入的干扰。因此，量化干扰减小，而量化粗大，因此压缩增益增加。

66. 发明授权

US08880410B2 Apparatus and method for generating a bandwidth extended signal 有权
标题翻译：用于产生带宽扩展信号的装置和方法
公开(公告)号：US08880410B2
公开(公告)日：2014-11-04
申请号：US13004314
申请日：2011-01-11
申请人： Frederik Nagel , Sascha Disch , Max Neuendorf , Stefan Bayer , Marc Gayer , Markus Lohwasser , Nikolaus Rettelbach , Ulrich Kraemer
发明人： Frederik Nagel , Sascha Disch , Max Neuendorf , Stefan Bayer , Marc Gayer , Markus Lohwasser , Nikolaus Rettelbach , Ulrich Kraemer
IPC分类号： G10L19/00 , G10L21/038
CPC分类号： G10L21/038
摘要： An apparatus for generating a bandwidth extended signal from an input signal includes a patch generator and a combiner. The input signal is represented for first and second bands by first and second resolution data, respectively, the second resolution being lower than the first. The patch generator generates first and second patches from the first band of the input signal according to first and second patching algorithms, respectively. A spectral density of the second patch generated using the second patching algorithm is higher than a spectral density of a first patch generated using the first patching algorithm. The combiner combines both patches and the first band of the input signal to obtain the bandwidth extended signal. The apparatus scales the input signal according to the first and second patching algorithms or scales the first and second patches, so that the bandwidth extended signal fulfills a spectral envelope criterion.
摘要翻译：一种用于从输入信号产生带宽扩展信号的装置包括补丁发生器和组合器。输入信号分别由第一和第二分辨率数据表示为第一和第二频带，第二分辨率低于第一分辨率数据。贴片发生器分别根据第一和第二修补算法从输入信号的第一频带产生第一和第二贴片。使用第二修补算法生成的第二贴片的频谱密度高于使用第一修补算法生成的第一贴片的频谱密度。组合器将输入信号的两个补丁和第一个频带组合起来，以获得带宽扩展信号。该装置根据第一和第二修补算法对输入信号进行缩放或缩放第一和第二贴片，使得带宽扩展信号满足频谱包络准则。

67. 发明申请

US20110216918A1 Apparatus and Method for Generating a Bandwidth Extended Signal 有权
标题翻译：用于产生带宽扩展信号的装置和方法
公开(公告)号：US20110216918A1
公开(公告)日：2011-09-08
申请号：US13004314
申请日：2011-01-11
申请人： Frederik Nagel , Sascha Disch , Max Neuendorf , Stefan Bayer , Marc Gayer , Markus Lohwasser , Nikolaus Rettelbach , Ulrich Kraemer
发明人： Frederik Nagel , Sascha Disch , Max Neuendorf , Stefan Bayer , Marc Gayer , Markus Lohwasser , Nikolaus Rettelbach , Ulrich Kraemer
IPC分类号： H03G5/00
CPC分类号： G10L21/038
摘要： An apparatus for generating a bandwidth extended signal from an input signal includes a patch generator and a combiner. The input signal is represented for first and second bands by first and second resolution data, respectively, the second resolution being lower than the first. The patch generator generates first and second patches from the first band of the input signal according to first and second patching algorithms, respectively. A spectral density of the second patch generated using the second patching algorithm is higher than a spectral density of a first patch generated using the first patching algorithm. The combiner combines both patches and the first band of the input signal to obtain the bandwidth extended signal. The apparatus scales the input signal according to the first and second patching algorithms or scales the first and second patches, so that the bandwidth extended signal fulfills a spectral envelope criterion.
摘要翻译：一种用于从输入信号产生带宽扩展信号的装置包括补丁发生器和组合器。输入信号分别由第一和第二分辨率数据表示为第一和第二频带，第二分辨率低于第一分辨率数据。贴片发生器分别根据第一和第二修补算法从输入信号的第一频带产生第一和第二贴片。使用第二修补算法生成的第二贴片的频谱密度高于使用第一修补算法生成的第一贴片的频谱密度。组合器将输入信号的两个补丁和第一个频带组合起来，以获得带宽扩展信号。该装置根据第一和第二修补算法对输入信号进行缩放或缩放第一和第二贴片，使得带宽扩展信号满足频谱包络准则。

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