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1. 发明授权

US09524726B2 Audio signal decoder, audio signal encoder, method for decoding an audio signal, method for encoding an audio signal and computer program using a pitch-dependent adaptation of a coding context 有权
标题翻译：音频信号解码器，音频信号编码器，用于解码音频信号的方法，用于对音频信号进行编码的方法和使用编码上下文的音调依赖性调整的计算机程序
公开(公告)号：US09524726B2
公开(公告)日：2016-12-20
申请号：US13608980
申请日：2012-09-10
申请人： Stefan Bayer , Tom Baeckstroem , Ralf Geiger , Bernd Edler , Sascha Disch , Lars Villemoes
发明人： Stefan Bayer , Tom Baeckstroem , Ralf Geiger , Bernd Edler , Sascha Disch , Lars Villemoes
IPC分类号： G10L19/14 , G10L19/022 , G10L19/02 , G10L25/90
CPC分类号： G10L19/022 , G10L19/0212 , G10L25/90
摘要： An audio signal decoder includes a context-based spectral value decoder configured to decode a codeword describing one or more spectral values or at least a portion of a number representation thereof in dependence on a context state. The audio signal decoder also includes a context state determinator configured to determine a current context state in dependence on one or more previously decoded spectral values and a time warping frequency-domain-to-time-domain converter configured to provide a time-warped time-domain representation of a given audio frame on the basis of a set of decoded spectral values provided by the context-based spectral value decoder and in dependence on the time warp information. The context-state determinator is configured to adapt the determination of the context state to a change of a fundamental frequency between subsequent audio frames. An audio signal encoder applies a comparable concept.
摘要翻译：音频信号解码器包括基于上下文的频谱值解码器，其被配置为根据上下文状态来解码描述一个或多个频谱值的码字或其数字表示的至少一部分。音频信号解码器还包括上下文状态确定器，其被配置为根据一个或多个先前解码的频谱值确定当前上下文状态，以及时间扭曲频域 - 时域转换器，被配置为提供时间扭曲的时域 - 基于由基于上下文的频谱值解码器提供的解码频谱值的集合并且依赖于时间扭曲信息，给定音频帧的域表示。上下文状态确定器被配置为使上下文状态的确定适应随后的音频帧之间的基频的改变。音频信号编码器应用可比较的概念。

2. 发明授权

US08930198B2 Low bitrate audio encoding/decoding scheme having cascaded switches 有权
标题翻译：具有级联交换机的低比特率音频编码/解码方案
公开(公告)号：US08930198B2
公开(公告)日：2015-01-06
申请号：US13004385
申请日：2011-01-11
申请人： Bernhard Grill , Roch Lefebvre , Bruno Bessette , Jimmy Lapierre , Philippe Gournay , Redwan Salami , Stefan Bayer , Guillaume Fuchs , Stefan Geyersberger , Ralf Geiger , Johannes Hilpert , Ulrich Kraemer , Jeremie Lecomte , Markus Multrus , Max Neuendorf , Harald Popp , Nikolaus Rettelbach
发明人： Bernhard Grill , Roch Lefebvre , Bruno Bessette , Jimmy Lapierre , Philippe Gournay , Redwan Salami , Stefan Bayer , Guillaume Fuchs , Stefan Geyersberger , Ralf Geiger , Johannes Hilpert , Ulrich Kraemer , Jeremie Lecomte , Markus Multrus , Max Neuendorf , Harald Popp , Nikolaus Rettelbach
IPC分类号： G10L19/00 , G10L19/18 , G10L19/16 , G10L19/008 , G10L19/02
CPC分类号： G10L19/008 , G10L19/0017 , G10L19/0212 , G10L19/173 , G10L19/18 , G10L2019/0008
摘要： An audio encoder has a first information sink oriented encoding branch, a second information source or SNR oriented encoding branch, and a switch for switching between the first encoding branch and the second encoding branch, wherein the second encoding branch has a converter into a specific domain different from the spectral domain, and wherein the second encoding branch furthermore has a specific domain coding branch, and a specific spectral domain coding branch, and an additional switch for switching between the specific domain coding branch and the specific spectral domain coding branch. An audio decoder has a first domain decoder, a second domain decoder for decoding a signal, and a third domain decoder and two cascaded switches for switching between the decoders.
摘要翻译：音频编码器具有第一信息汇集编码分支，第二信息源或SNR定向编码分支，以及用于在第一编码分支和第二编码分支之间进行切换的开关，其中第二编码分支具有转换器到特定的域并且其中第二编码分支还具有特定的域编码分支，以及特定频域编码分支，以及用于在特定的域编码分支与特定频域编码分支之间切换的附加开关。音频解码器具有第一域解码器，用于对信号进行解码的第二域解码器，以及用于在解码器之间切换的第三域解码器和两个级联开关。

3. 发明授权

US08804970B2 Low bitrate audio encoding/decoding scheme with common preprocessing 有权
标题翻译：低比特率音频编码/解码方案，具有通用的预处理功能
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。

4. 发明授权

US08762159B2 Audio encoder, audio decoder, encoded audio information, methods for encoding and decoding an audio signal and computer program 有权
标题翻译：音频编码器，音频解码器，编码音频信息，用于对音频信号进行编码和解码的方法以及计算机程序
公开(公告)号：US08762159B2
公开(公告)日：2014-06-24
申请号：US13191246
申请日：2011-07-26
申请人： Ralf Geiger , Jeremie Lecomte , Markus Multrus , Max Neuendorf , Christian Spitzner
发明人： Ralf Geiger , Jeremie Lecomte , Markus Multrus , Max Neuendorf , Christian Spitzner
IPC分类号： G10L21/00
CPC分类号： G10L19/167 , G10L19/0017 , G10L19/022 , G10L19/24
摘要： An audio decoder for providing a decoded audio information on the basis of an encoded audio information includes a window-based signal transformer configured to map a time-frequency representation, which is described by the encoded audio information, to a time-domain representation. The window-based signal transformer is configured to select a window, out of a plurality of windows including windows of different transition slopes and windows of different transform length, on the basis of a window information. The audio decoder includes a window selector configured to evaluate a variable-codeword-length window information in order to select a window for a processing of a given portion of the time-frequency representation associated with a given frame of the audio information.
摘要翻译：用于基于编码的音频信息提供经解码的音频信息的音频解码器包括：基于窗口的信号变换器，被配置为将由编码的音频信息描述的时间频率表示映射到时域表示。基于窗口的信号变换器被配置为基于窗口信息来选择包括不同转换斜率的窗口的多个窗口和不同变换长度的窗口中的窗口。音频解码器包括窗口选择器，其被配置为评估可变码字长度窗口信息，以便选择用于处理与音频信息的给定帧相关联的时间 - 频率表示的给定部分的窗口。

5. 发明申请

US20130246492A1 SIGNAL PROCESSOR, WINDOW PROVIDER, ENCODED MEDIA SIGNAL, METHOD FOR PROCESSING A SIGNAL AND METHOD FOR PROVIDING A WINDOW 有权
标题翻译：信号处理器，窗口提供者，编码的媒体信号，用于处理信号的方法和用于提供窗口的方法
公开(公告)号：US20130246492A1
公开(公告)日：2013-09-19
申请号：US13610352
申请日：2012-09-11
申请人： Christian HELMRICH , Ralf GEIGER
发明人： Christian HELMRICH , Ralf GEIGER
IPC分类号： G06F17/10
CPC分类号： H03M7/30 , G06F17/10 , G10L19/0212 , G10L19/022 , G10L25/45
摘要： A signal processor for providing a processed version of an input signal in dependence on the input signal has a windower configured to window a portion of the input signal, or of a pre-processed version thereof, in dependence on a signal processing window described by signal processing window values for a plurality of window value index values, in order to obtain the processed version of the input signal. The signal processor also has a window provider for providing the signal processing window values for a plurality of window value index values in dependence on one or more window shape parameters.
摘要翻译：用于根据输入信号提供输入信号的处理版本的信号处理器具有被配置为根据由信号描述的信号处理窗口来输入输入信号的一部分或其预处理版本的窗格处理多个窗口值索引值的窗口值，以便获得输入信号的处理版本。信号处理器还具有窗口提供器，用于根据一个或多个窗口形状参数为多个窗口值索引值提供信号处理窗口值。

6. 发明授权

US08494865B2 Audio decoder, audio encoder, method for decoding an audio signal, method for encoding an audio signal, computer program and audio signal 有权
标题翻译：音频解码器，音频编码器，用于解码音频信号的方法，用于编码音频信号的方法，计算机程序和音频信号
公开(公告)号：US08494865B2
公开(公告)日：2013-07-23
申请号：US13081241
申请日：2011-04-06
申请人： Guillaume Fuchs , Markus Multrus , Ralf Geiger , Arne Borsum , Frederik Nagel , Julien Robilliard , Vignesh Subbaraman , Jeremie Lecomte
发明人： Guillaume Fuchs , Markus Multrus , Ralf Geiger , Arne Borsum , Frederik Nagel , Julien Robilliard , Vignesh Subbaraman , Jeremie Lecomte
IPC分类号： G10L19/00
CPC分类号： G10L19/0017 , G10L19/02 , G10L19/0204 , G10L19/022 , G10L19/028 , G10L19/035 , G10L25/18
摘要： An audio decoder for providing a decoded audio information on the basis of an entropy encoded audio information includes a context-based entropy decoder configured to decode the entropy-encoded audio information in dependence on a context, which context is based on a previously-decoded audio information in a non-reset state-of-operation. The context-based entropy decoder is configured to select a mapping information, for deriving the decoded audio information from the encoded audio information, in dependence on the context. The context-based entropy decoder includes a context resetter configured to reset the context for selecting the mapping information to a default context, which default context is independent from the previously-decoded audio information, in response to a side information of the encoded audio information.
摘要翻译：用于基于熵编码的音频信息提供解码的音频信息的音频解码器包括：基于上下文的熵解码器，其被配置为根据上下文来解码熵编码的音频信息，该上下文基于先前解码的音频信息处于非复位操作状态。基于上下文的熵解码器被配置为选择映射信息，用于根据上下文从编码的音频信息中导出解码的音频信息。基于上下文的熵解码器包括上下文重置器，被配置为响应于所编码的音频信息的辅助信息，重新设置上下文以选择映射信息到默认上下文，该缺省上下文独立于先前解码的音频信息。

7. 发明授权

US08438015B2 Apparatus and method for generating audio subband values and apparatus and method for generating time-domain audio samples 有权
标题翻译：用于产生音频子带值的装置和方法以及用于产生时域音频样本的装置和方法
公开(公告)号：US08438015B2
公开(公告)日：2013-05-07
申请号：US12293532
申请日：2007-10-23
申请人： Markus Schnell , Manfred Lutzky , Markus Lohwasser , Markus Schmidt , Marc Gayer , Michael Mellar , Bernd Edler , Markus Multrus , Gerald Schuller , Ralf Geiger , Bernhard Grill
发明人： Markus Schnell , Manfred Lutzky , Markus Lohwasser , Markus Schmidt , Marc Gayer , Michael Mellar , Bernd Edler , Markus Multrus , Gerald Schuller , Ralf Geiger , Bernhard Grill
IPC分类号： G10L19/14
CPC分类号： G10L19/0204 , G10L19/022 , G10L21/038 , G10L25/45 , H03H17/0266
摘要： An embodiment of an apparatus for generating audio subband values in audio subband channels includes an analysis windower for windowing a frame of time-domain audio input samples being in a time sequence extending from an early sample to a later sample using an analysis window function including a sequence of window coefficients to obtain windowed samples. The analysis window function includes a first number of window coefficients derived from a larger window function including a sequence of a larger second number of window coefficients, wherein the window coefficients of the window function are derived by an interpolation of window coefficients of the larger window function. The apparatus further includes a calculator for calculating the audio subband values using the windowed samples.
摘要翻译：用于在音频子频带信道中产生音频子带值的装置的实施例包括分析加窗器，用于使用包括以下的分析窗口功能将时域音频输入样本的帧以从早期样本延伸到稍后样本的时间顺序进行加窗窗系数序列以获得窗口样本。分析窗口函数包括从包括较大第二数目窗系数的序列的较大窗口函数导出的第一数目的窗系数，其中窗函数的窗系数通过较大窗函数的窗系数的插值导出。该装置还包括一个使用窗口样本计算音频子带值的计算器。

8. 发明授权

US08195730B2 Apparatus and method for conversion into a transformed representation or for inverse conversion of the transformed representation 有权
标题翻译：用于转换为变换表示或用于逆变换变换表示的装置和方法
公开(公告)号：US08195730B2
公开(公告)日：2012-06-05
申请号：US11331551
申请日：2006-01-13
申请人： Ralf Geiger , Gerald Schuller , Thomas Sporer
发明人： Ralf Geiger , Gerald Schuller , Thomas Sporer
IPC分类号： G06F17/14
CPC分类号： H04N19/60 , G06F17/147 , G10L19/0017 , G10L19/0212
摘要： For converting first and second blocks of discrete values into a transformed representation, the first block is transformed according to a first transformation rule and then rounded. Then, the rounded transformed values are summed with the second block of original discrete values, to then process the summation result according to a second transformation rule. The output values of the transformation via the second transformation rule are again rounded and then subtracted from the original discrete values of the first block of discrete values to obtain a block of integer output values of the transformed representation. By this multi-dimensional lifting scheme, a lossless integer transformation is obtained, which can be reversed by applying the same transformation rule, but with different signs in summation and subtraction, respectively, so that an inverse integer transformation can also be obtained. Compared to a separation of a transformation in rotations, on the one hand, a significantly reduced computing complexity is achieved and, on the other hand, an accumulation of approximation errors is prevented.
摘要翻译：为了将离散值的第一和第二块转换为变换表示，根据第一变换规则对第一块进行变换，然后进行舍入。然后，舍入的变换值与原始离散值的第二块相加，然后根据第二变换规则处理求和结果。经由第二变换规则的变换的输出值再次被舍入，然后从离散值的第一块的原始离散值中减去，以获得变换表示的整数输出值的块。通过这种多维提升方案，获得了一个无损整数变换，可以通过应用相同的变换规则来反转，但是在求和和减法中分别具有不同的符号，从而也可以获得逆整数变换。与旋转变换的分离相比，一方面，实现了显着降低的计算复杂度，另一方面，防止了近似误差的累积。

9. 发明申请

US20110238426A1 Audio Decoder, Audio Encoder, Method for Decoding an Audio Signal, Method for Encoding an Audio Signal, Computer Program and Audio Signal 有权
标题翻译：音频解码器，音频编码器，用于解码音频信号的方法，用于对音频信号进行编码的方法，计算机程序和音频信号
公开(公告)号：US20110238426A1
公开(公告)日：2011-09-29
申请号：US13081241
申请日：2011-04-06
申请人： Guillaume Fuchs , Markus Multrus , Ralf Geiger , Arne Borsum , Frederik Nagel , Julien Robilliard , Vignesh Subbaraman , Jeremie Lecomte
发明人： Guillaume Fuchs , Markus Multrus , Ralf Geiger , Arne Borsum , Frederik Nagel , Julien Robilliard , Vignesh Subbaraman , Jeremie Lecomte
IPC分类号： G10L19/00
CPC分类号： G10L19/0017 , G10L19/02 , G10L19/0204 , G10L19/022 , G10L19/028 , G10L19/035 , G10L25/18
摘要： An audio decoder for providing a decoded audio information on the basis of an entropy encoded audio information includes a context-based entropy decoder configured to decode the entropy-encoded audio information in dependence on a context, which context is based on a previously-decoded audio information in a non-reset state-of-operation. The context-based entropy decoder is configured to select a mapping information, for deriving the decoded audio information from the encoded audio information, in dependence on the context. The context-based entropy decoder includes a context resetter configured to reset the context for selecting the mapping information to a default context, which default context is independent from the previously-decoded audio information, in response to a side information of the encoded audio information.
摘要翻译：用于基于熵编码的音频信息提供解码的音频信息的音频解码器包括：基于上下文的熵解码器，其被配置为根据上下文来解码熵编码的音频信息，该上下文基于先前解码的音频信息处于非复位操作状态。基于上下文的熵解码器被配置为选择映射信息，用于根据上下文从编码的音频信息中导出解码的音频信息。基于上下文的熵解码器包括上下文重置器，被配置为响应于所编码的音频信息的辅助信息，重新设置上下文以选择映射信息到默认上下文，该缺省上下文独立于先前解码的音频信息。

10. 发明授权

US07917564B2 Device and method for processing a signal having a sequence of discrete values 有权
标题翻译：用于处理具有离散值序列的信号的装置和方法
公开(公告)号：US07917564B2
公开(公告)日：2011-03-29
申请号：US11388186
申请日：2006-03-23
申请人： Ralf Geiger , Gerald Schuller , Thomas Sporer
发明人： Ralf Geiger , Gerald Schuller , Thomas Sporer
IPC分类号： G06F17/14
CPC分类号： H04N19/60 , G10L19/0017 , G10L19/032
摘要： When processing a signal having a sequence of discrete values, wherein there is a first frequency range, in which the signal has a high energy, and wherein there is a second frequency range, in which the signal has a low energy, the sequence of discrete values is first manipulated to obtain a sequence of manipulated values, so that at least one of the manipulated values is non-integer. Then the sequence of manipulated values is rounded to obtain a sequence of manipulated values. The rounding is formed to effect a spectral shaping of a generated rounding error so that a spectrally shaped rounding error has a higher energy in the first frequency range than in the second frequency range. By spectrally shaping the rounding error so that the rounding error does not have any energy either in the storage areas where there is no signal energy, an especially efficient coding is obtained particularly in connection with a lossless coding context.
摘要翻译：当处理具有离散值序列的信号时，其中存在其中信号具有高能量的第一频率范围，并且其中存在信号具有低能量的第二频率范围，离散的序列首先操作值以获得操纵值的序列，使得至少一个被操纵的值是非整数的。然后对操纵值的序列进行四舍五入以获得一系列被操纵的值。形成四舍五入以实现产生的舍入误差的频谱整形，使得频谱整形的舍入误差在第一频率范围内具有比在第二频率范围内更高的能量。通过对舍入误差进行光谱整形，使得舍入误差在没有信号能量的存储区域中也不具有任何能量，特别是结合无损编码上下文获得特别有效的编码。

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