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1.发明授权Audio encoder, method for providing output signal, bandwidth extension decoder, and method for providing bandwidth extended audio signal 有权音频编码器，用于提供输出信号的方法，带宽扩展解码器和用于提供带宽扩展音频信号的方法公开(公告)号：US08401862B2
公开(公告)日：2013-03-19
申请号：US13158547
申请日：2011-06-13
IPC分类号： G10L19/00
CPC分类号： G10L19/265 , G10L19/00 , G10L19/24 , G10L21/038
摘要： An audio encoder for providing an output signal using an input audio signal includes a patch generator, a comparator and an output interface. The patch generator generates at least one bandwidth extension high-frequency signal, wherein a bandwidth extension high-frequency signal includes a high-frequency band. The high-frequency band of the bandwidth extension high-frequency signal is based on a low frequency band of the input audio signal. A comparator calculates a plurality of comparison parameters. A comparison parameter is calculated based on a comparison of the input audio signal and a generated bandwidth extension high-frequency signal. Each comparison parameter of the plurality of comparison parameters is calculated based on a different offset frequency between the input audio signal and a generated bandwidth extension high-frequency signal. Further, the comparator determines a comparison parameter from the plurality of comparison parameters, wherein the determined comparison parameter fulfils a predefined criterion.
摘要翻译： 用于使用输入音频信号提供输出信号的音频编码器包括片生成器，比较器和输出接口。 贴片发生器产生至少一个带宽扩展高频信号，其中带宽扩展高频信号包括高频带。 带宽扩展高频信号的高频带基于输入音频信号的低频带。 比较器计算多个比较参数。 基于输入音频信号和产生的带宽扩展高频信号的比较来计算比较参数。 基于输入音频信号与生成的带宽扩展高频信号之间的不同偏移频率来计算多个比较参数的每个比较参数。 此外，比较器确定来自多个比较参数的比较参数，其中确定的比较参数满足预定标准。
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2.发明申请公开(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
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。
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3.发明授权公开(公告)号：US08804970B2
公开(公告)日：2014-08-12
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： 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。
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公开(公告)号：US09275652B2
公开(公告)日：2016-03-01
申请号：US12921550
申请日：2009-02-17
IPC分类号： G06F17/00 , G10L21/04 , G10L19/025
CPC分类号： G10L21/04 , G10L19/025
摘要： A signal manipulator for manipulating an audio signal having a transient event may have a transient remover, a signal processor and a signal inserter for inserting a time portion in a processed audio signal at a signal location where the transient event was removed before processing by the transient remover, so that a manipulated audio signal has a transient event not influenced by the processing, whereby the vertical coherence of the transient event is maintained instead of any processing performed in the signal processor, which would destroy the vertical coherence of a transient.
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5.发明授权Device and method for manipulating an audio signal having a transient event 有权用于操纵具有瞬态事件的音频信号的装置和方法公开(公告)号：US09236062B2
公开(公告)日：2016-01-12
申请号：US13465946
申请日：2012-05-07
IPC分类号： G06F17/00 , G10L21/04 , G10L19/025
CPC分类号： G10L21/04 , G10L19/025
摘要： A signal manipulator for manipulating an audio signal having a transient event may have a transient remover, a signal processor and a signal inserter for inserting a time portion in a processed audio signal at a signal location where the transient event was removed before processing by the transient remover, so that a manipulated audio signal has a transient event not influenced by the processing, whereby the vertical coherence of the transient event is maintained instead of any processing performed in the signal processor, which would destroy the vertical coherence of a transient.
摘要翻译： 用于操纵具有瞬态事件的音频信号的信号操纵器可以具有瞬态去除器，信号处理器和信号插入器，用于在瞬态事件被去除的信号位置处将处理后的音频信号中的时间部分插入， 去除器，使得被操纵的音频信号具有不受处理影响的瞬态事件，由此维持瞬态事件的垂直相干性而不是在信号处理器中执行的任何处理，这将破坏瞬态的垂直相干性。
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公开(公告)号：US09230558B2
公开(公告)日：2016-01-05
申请号：US13465936
申请日：2012-05-07
IPC分类号： G06F17/00 , G10L21/04 , G10L19/025
CPC分类号： G10L21/04 , G10L19/025
摘要： A signal manipulator for manipulating an audio signal having a transient event may have a transient remover, a signal processor and a signal inserter for inserting a time portion in a processed audio signal at a signal location where the transient event was removed before processing by the transient remover, so that a manipulated audio signal has a transient event not influenced by the processing, whereby the vertical coherence of the transient event is maintained instead of any processing performed in the signal processor, which would destroy the vertical coherence of a transient.
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7.发明申请Device and Method for Manipulating an Audio Signal Having a Transient Event 有权用于操纵具有瞬态事件的音频信号的装置和方法公开(公告)号：US20110112670A1
公开(公告)日：2011-05-12
申请号：US12921550
申请日：2009-02-17
IPC分类号： G06F17/00
CPC分类号： G10L21/04 , G10L19/025
摘要： A signal manipulator for manipulating an audio signal having a transient event may have a transient remover, a signal processor and a signal inserter for inserting a time portion in a processed audio signal at a signal location where the transient event was removed before processing by the transient remover, so that a manipulated audio signal has a transient event not influenced by the processing, whereby the vertical coherence of the transient event is maintained instead of any processing performed in the signal processor, which would destroy the vertical coherence of a transient.
摘要翻译： 用于操纵具有瞬态事件的音频信号的信号操纵器可以具有瞬态去除器，信号处理器和信号插入器，用于在瞬态事件被去除的信号位置处将处理后的音频信号中的时间部分插入， 去除器，使得被操纵的音频信号具有不受处理影响的瞬态事件，由此维持瞬态事件的垂直相干性而不是在信号处理器中执行的任何处理，这将破坏瞬态的垂直相干性。
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8.发明授权Apparatus and method for generating a multi-channel synthesizer control signal, multi-channel synthesizer, method of generating an output signal from an input signal and machine-readable storage medium 有权用于产生多声道合成器控制信号的装置和方法，多声道合成器，从输入信号产生输出信号的方法和机器可读存储介质公开(公告)号：US08532999B2
公开(公告)日：2013-09-10
申请号：US13158863
申请日：2011-06-13
申请人： Matthias Neusinger , Juergen Herre , Sascha Disch , Heiko Purnhagen , Kristofer Kjoerling , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers , Werner Oomen
发明人： Matthias Neusinger , Juergen Herre , Sascha Disch , Heiko Purnhagen , Kristofer Kjoerling , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers , Werner Oomen
CPC分类号： G10L19/26 , G10L19/008 , G10L2019/0012 , H04S3/008
摘要： An apparatus and a method for generating a multi-channel synthesizer control signal, a multi-channel synthesizer, a method of generating an output signal from an input signal and a machine-readable storage medium are provided. On an encoder-side, a multi-channel input signal is analyzed for obtaining smoothing control information, which is to be used by a decoder-side multi-channel synthesis for smoothing quantized transmitted parameters or values derived from the quantized transmitted parameters for providing an improved subjective audio quality in particular for slowly moving point sources and rapidly moving point sources having tonal material such as fast moving sinusoids.
摘要翻译： 提供一种用于产生多声道合成器控制信号的装置和方法，多声道合成器，从输入信号产生输出信号的方法和机器可读存储介质。 在编码器侧，分析多通道输入信号以获得平滑控制信息，该平滑控制信息将被解码器侧多信道合成用于平滑经量化的传输参数或从量化的传输参数导出的值，以提供 改善主观音频质量，特别是对于缓慢移动的点源和具有诸如快速移动的正弦波的音调材料的快速移动的点源。
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9.发明授权公开(公告)号：US08116459B2
公开(公告)日：2012-02-14
申请号：US11384000
申请日：2006-05-18
申请人： Sascha Disch , Karsten Linzmeier , Juergen Herre , Harald Popp
发明人： Sascha Disch , Karsten Linzmeier , Juergen Herre , Harald Popp
IPC分类号： H04R5/00
CPC分类号： H04S3/002 , G10L19/008 , G10L19/26 , H04R2217/03 , H04S3/02 , H04S2420/03
摘要： The present invention is based on the finding that a reconstructed output channel, reconstructed with a multi-channel reconstructor using at least one downmix channel derived by downmixing a plurality of original channels and using a parameter representation including additional information on a temporal fine structure of an original channel can be reconstructed efficiently with high quality, when a generator for generating a direct signal component and a diffuse signal component based on the downmix channel is used. The quality can be essentially enhanced, if only the direct signal component is modified such that the temporal fine structure of the reconstructed output channel is fitting a desired temporal fine structure, indicated by the additional information on the temporal fine structure transmitted.
摘要翻译： 本发明基于以下发现：重建的输出通道，其使用通过将多个原始通道进行下混合而导出的至少一个下混频道重建的多通道重构器，并且使用参数表示，该参数表示包括关于时间精细结构的附加信息 当使用用于产生基于下混通道的直接信号分量和扩散信号分量的发生器时，可以高质量地重构原始信道。 如果仅修改直接信号分量，使得重建的输出信道的时间精细结构适合于由发送的时间精细结构的附加信息所指示的期望的时间精细结构，则质量可以基本上增强。
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公开(公告)号：US07974713B2
公开(公告)日：2011-07-05
申请号：US11363985
申请日：2006-02-27
CPC分类号： G10L19/008 , H04S3/008
摘要： A selected channel of a multi-channel signal represented by frames composed from sampling values having a high time resolution is provided that can be encoded with higher quality when a wave form parameter representation representing a wave form of an intermediate resolution representation of the selected channel is derived. The wave form parameter representation with the intermediate resolution can be used to shape a reconstructed channel to retrieve a channel having a signal envelope close to a selected original channel. The time scale on which the shaping is performed is shorter than the time scale of a framewise processing, thus enhancing the quality of the reconstructed channel. On the other hand, the shaping time scale is larger than the time scale of the sampling values, significantly reducing the amount of data needed by the wave form parameter representation.
摘要翻译： 提供了由具有高时间分辨率的采样值组成的帧表示的多通道信号的选定通道，当表示所选通道的中间分辨率表示的波形的波形参数表示为 派生。 具有中间分辨率的波形参数表示可用于对重建的信道进行整形以检索具有接近所选原始信道的信号包络的信道。 进行整形的时间标度比框架处理的时间标度短，从而提高重构信道的质量。 另一方面，成形时间尺度大于采样值的时间尺度，显着减少波形参数表示所需的数据量。
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