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21. 发明授权

US08744843B2 Multi-mode audio codec and CELP coding adapted therefore 有权
标题翻译：因此，改变了多模式音频编解码器和CELP编码
公开(公告)号：US08744843B2
公开(公告)日：2014-06-03
申请号：US13449890
申请日：2012-04-18
申请人： Ralf Geiger , Guillaume Fuchs , Markus Multrus , Bernhard Grill
发明人： Ralf Geiger , Guillaume Fuchs , Markus Multrus , Bernhard Grill
IPC分类号： G10L21/00 , G10L19/00
CPC分类号： G10L19/12 , G10L19/03 , G10L19/04 , G10L19/083 , G10L19/20 , G10L2019/0002
摘要： In an embodiment, bitstream elements of sub-frames are encoded differentially to a global gain value so that a change of the global gain value results in an adjustment of an output level of the decoded representation of the audio content. Concurrently, the differential coding saves bits. Even further, the differential coding enables the lowering of the burden of globally adjusting the gain of an encoded bitstream. In another embodiment, a global gain control across CELP coded frames and transform coded frames is achieved by co-controlling the gain of the codebook excitation of the CELP codec, along with a level of the transform or inverse transform of the transform coded frames. In another embodiment, the gain value determination in CELP coding is performed in the weighted domain of the excitation signal.
摘要翻译：在一个实施例中，子帧的比特流元素被差分地编码为全局增益值，使得全局增益值的改变导致音频内容的解码表示的输出电平的调整。同时，差分编码保存位。此外，差分编码能够降低全局调整编码比特流的增益的负担。在另一个实施例中，跨CELP编码帧和变换编码帧的全局增益控制与CELP编解码器的码本激励的增益以及变换编码帧的变换或逆变换的级别一起共同实现。在另一实施例中，在激励信号的加权域中执行CELP编码中的增益值确定。

22. 发明申请

US20110173011A1 Audio Encoder and Decoder for Encoding and Decoding Frames of a Sampled Audio Signal 有权
标题翻译：音频编码器和解码器，用于对采样音频信号的帧进行编码和解码
公开(公告)号：US20110173011A1
公开(公告)日：2011-07-14
申请号：US13004475
申请日：2011-01-11
申请人： Ralf Geiger , Bernhard Grill , Bruno Bessette , Philippe Gournay , Guillaume Fuchs , Markus Multrus , Max Neuendorf , Gerald Schuller
发明人： Ralf Geiger , Bernhard Grill , Bruno Bessette , Philippe Gournay , Guillaume Fuchs , Markus Multrus , Max Neuendorf , Gerald Schuller
IPC分类号： G10L19/00
CPC分类号： G10L19/0212 , G10L19/04
摘要： An audio encoder adapted for encoding frames of a sampled audio signal to obtain encoded frames, wherein a frame includes a number of time domain audio samples. The audio encoder includes a predictive coding analysis stage for determining information on coefficients of a synthesis filter and a prediction domain frame based on a frame of audio samples. The audio encoder further includes a time-aliasing introducing transformer for transforming overlapping prediction domain frames to the frequency domain to obtain prediction domain frame spectra, wherein the time-aliasing introducing transformer is adapted for transforming the overlapping prediction domain frames in a critically-sampled way. Moreover, the audio encoder includes a redundancy reducing encoder for encoding the prediction domain frame spectra to obtain the encoded frames based on the coefficients and the encoded prediction domain frame spectra.
摘要翻译：一种音频编码器，适于编码采样的音频信号的帧以获得编码的帧，其中帧包括多个时域音频采样。音频编码器包括用于基于音频样本的帧来确定关于合成滤波器和预测域帧的系数的信息的预测编码分析阶段。音频编码器还包括时间混叠引入变压器，用于将重叠的预测域帧转换到频域以获得预测域帧频谱，其中时间混叠引入变压器适于以重要取样的方式变换重叠的预测域帧。此外，音频编码器包括冗余减少编码器，用于根据系数和编码的预测域帧频谱对预测域帧频谱进行编码以获得编码的帧。

23. 发明授权

US08595019B2 Audio coder/decoder with predictive coding of synthesis filter and critically-sampled time aliasing of prediction domain frames 有权
标题翻译：具有合成滤波器的预测编码和预测域帧的临时采样时间混叠的音频编码器/解码器
公开(公告)号：US08595019B2
公开(公告)日：2013-11-26
申请号：US13004475
申请日：2011-01-11
申请人： Ralf Geiger , Bernhard Grill , Bruno Bessette , Philippe Gournay , Guillaume Fuchs , Markus Multrus , Max Neuendorf , Gerald Schuller
发明人： Ralf Geiger , Bernhard Grill , Bruno Bessette , Philippe Gournay , Guillaume Fuchs , Markus Multrus , Max Neuendorf , Gerald Schuller
IPC分类号： G10L19/00 , G10L19/02 , G10L19/04
CPC分类号： G10L19/0212 , G10L19/04
摘要： An audio encoder adapted for encoding frames of a sampled audio signal to obtain encoded frames, wherein a frame includes a number of time domain audio samples. The audio encoder includes a predictive coding analysis stage for determining information on coefficients of a synthesis filter and a prediction domain frame based on a frame of audio samples. The audio encoder further includes a time-aliasing introducing transformer for transforming overlapping prediction domain frames to the frequency domain to obtain prediction domain frame spectra, wherein the time-aliasing introducing transformer is adapted for transforming the overlapping prediction domain frames in a critically-sampled way. Moreover, the audio encoder includes a redundancy reducing encoder for encoding the prediction domain frame spectra to obtain the encoded frames based on the coefficients and the encoded prediction domain frame spectra.
摘要翻译：一种音频编码器，适于编码采样的音频信号的帧以获得编码的帧，其中帧包括多个时域音频采样。音频编码器包括用于基于音频样本的帧来确定关于合成滤波器和预测域帧的系数的信息的预测编码分析阶段。音频编码器还包括时间混叠引入变压器，用于将重叠的预测域帧转换到频域以获得预测域帧频谱，其中时间混叠引入变压器适于以重要取样的方式变换重叠的预测域帧。此外，音频编码器包括冗余减少编码器，用于根据系数和编码的预测域帧频谱对预测域帧频谱进行编码以获得编码的帧。

24. 发明授权

US09299363B2 Time warp contour calculator, audio signal encoder, encoded audio signal representation, methods and computer program 有权
标题翻译：时间扭曲轮廓计算器，音频信号编码器，编码音频信号表示，方法和计算机程序
公开(公告)号：US09299363B2
公开(公告)日：2016-03-29
申请号：US12935731
申请日：2009-07-01
申请人： Stefan Bayer , Sascha Disch , Ralf Geiger , Guillaume Fuchs , Max Neuendorf , Gerald Schuller , Bernd Edler
发明人： Stefan Bayer , Sascha Disch , Ralf Geiger , Guillaume Fuchs , Max Neuendorf , Gerald Schuller , Bernd Edler
IPC分类号： G10L19/00 , G10L21/04 , G10L19/032 , G10L19/16 , G10L19/02 , G10L19/022
CPC分类号： G10L21/04 , G10L19/0212 , G10L19/022 , G10L19/032 , G10L19/167
摘要： A time warp contour calculator for use in an audio signal decoder receives an encoded warp ratio information, derives a sequence of warp ratio values from the encoded warp ratio information, and obtains warp contour node values starting from a time warp contour start value. Ratios between the time warp contour node values and the time warp contour starting value are determined by the warp ratio values. The time warp contour calculator computes a time warp contour node value of a given time warp contour node, on the basis of a product-formation having a ratio between the time warp contour node values of the intermediate time warp contour node and the time warp contour starting value and a ratio between the time warp contour node values of the given time warp contour node and of the intermediate time warp contour node as factors.
摘要翻译：用于音频信号解码器的时间扭曲轮廓计算器接收经编码的扭曲比信息，从编码的扭曲比信息中导出扭曲比值序列，并从时间扭曲轮廓开始值开始获得翘曲轮廓节点值。时间扭曲轮廓节点值与时间扭曲轮廓起始值之间的比率由翘曲比值确定。时间扭曲轮廓计算器基于具有中间时间扭曲轮廓节点的时间扭曲轮廓节点值与时间扭曲轮廓之间的比值的乘积形式计算给定时间扭曲轮廓节点的时间扭曲轮廓节点值起始值和给定时间扭曲轮廓节点与中间时间扭曲轮廓节点的时间扭曲轮廓节点值之间的比值作为因素。

25. 发明授权

US09025777B2 Audio signal decoder, audio signal encoder, encoded multi-channel audio signal representation, methods and computer program 有权
标题翻译：音频信号解码器，音频信号编码器，编码多声道音频信号表示，方法和计算机程序
公开(公告)号：US09025777B2
公开(公告)日：2015-05-05
申请号：US12935740
申请日：2009-07-01
申请人： Stefan Bayer , Sascha Disch , Ralf Geiger , Guillaume Fuchs , Max Neuendorf , Gerald Schuller , Bernd Edler
发明人： Stefan Bayer , Sascha Disch , Ralf Geiger , Guillaume Fuchs , Max Neuendorf , Gerald Schuller , Bernd Edler
IPC分类号： H04R5/00 , G10L21/04 , G10L19/022 , G10L19/02
CPC分类号： G10L21/04 , G10L19/0212 , G10L19/022 , G10L19/032 , G10L19/167
摘要： An audio signal decoder for providing a decoded multi-channel audio signal representation on the basis of an encoded multi-channel audio signal representation has a time warp decoder configured to selectively use individual audio channel specific time warp contours or a joint multi-channel time warp contour for a reconstruction of a plurality of audio channels represented by the encoded multi-channel audio signal representation. An audio signal encoder for providing an encoded representation of a multi-channel audio signal has an encoded audio representation provider configured to selectively provide an audio representation having a common time warp contour information, commonly associated with a plurality of audio channels of the multi-channel audio signal, or an encoded audio representation having individual time warp contour information, individually associated with the different audio channels of the plurality of audio channels, in dependence on an information describing a similarity or difference between time warp contours associated with the audio channels of the plurality of audio channels.
摘要翻译：用于基于编码的多声道音频信号表示提供解码的多声道音频信号表示的音频信号解码器具有时间扭曲解码器，其被配置为选择性地使用单独的音频通道特定时间扭曲轮廓或联合多通道时间扭曲用于重建由编码的多声道音频信号表示表示的多个音频通道的轮廓。用于提供多声道音频信号的编码表示的音频信号编码器具有编码音频表示提供器，其被配置为选择性地提供具有公共时间扭曲轮廓信息的音频表示，通常与多声道音频信号的多个音频通道相关联音频信号或具有单独与多个音频通道的不同音频通道相关联的具有各个时间扭曲轮廓信息的经编码的音频表示，该信息根据描述与音频通道的音频通道相关联的时间扭曲轮廓之间的相似性或差异的信息多个音频通道。

26. 发明申请

US20110178795A1 TIME WARP ACTIVATION SIGNAL PROVIDER, AUDIO SIGNAL ENCODER, METHOD FOR PROVIDING A TIME WARP ACTIVATION SIGNAL, METHOD FOR ENCODING AN AUDIO SIGNAL AND COMPUTER PROGRAMS 有权
标题翻译：时间WARP激活信号提供商，音频信号编码器，提供时间WARP激活信号的方法，编码音频信号和计算机程序的方法
公开(公告)号：US20110178795A1
公开(公告)日：2011-07-21
申请号：US13004525
申请日：2011-01-11
申请人： Stefan Bayer , Sascha Disch , Ralf Geiger , Guillaume Fuchs , Max Neuendorf , Gerald Schuller , Bernd Edler
发明人： Stefan Bayer , Sascha Disch , Ralf Geiger , Guillaume Fuchs , Max Neuendorf , Gerald Schuller , Bernd Edler
IPC分类号： G10L19/14 , G10L21/02
CPC分类号： G10L21/04 , G10L19/002 , G10L19/0212 , G10L19/022 , G10L19/028 , G10L19/032 , G10L19/265 , G10L21/043 , G10L25/90
摘要： An audio encoder has a window function controller, a windower, a time warper with a final quality check functionality, a time/frequency converter, a TNS stage or a quantizer encoder, the window function controller, the time warper, the TNS stage or an additional noise filling analyzer are controlled by signal analysis results obtained by a time warp analyzer or a signal classifier. Furthermore, a decoder applies a noise filling operation using a manipulated noise filling estimate depending on a harmonic or speech characteristic of the audio signal.
摘要翻译：音频编码器具有窗口功能控制器，风扇，具有最终质量检查功能的时间整形器，时间/频率转换器，TNS阶段或量化器编码器，窗口功能控制器，时间整经器，TNS阶段或附加噪声填充分析仪由时间扭曲分析仪或信号分类器得到的信号分析结果进行控制。此外，解码器使用根据音频信号的谐波或语音特性的操纵噪声填充估计来应用噪声填充操作。

27. 发明申请

US20110106542A1 Audio Signal Decoder, Time Warp Contour Data Provider, Method and Computer Program 有权
标题翻译：音频信号解码器，时间扭曲轮廓数据提供者，方法和计算机程序
公开(公告)号：US20110106542A1
公开(公告)日：2011-05-05
申请号：US12935718
申请日：2009-07-01
申请人： Stefan Bayer , Sascha Disch , Ralf Geiger , Guillaume Fuchs , Max Neuendorf , Gerald Schuller , Bernd Edler
发明人： Stefan Bayer , Sascha Disch , Ralf Geiger , Guillaume Fuchs , Max Neuendorf , Gerald Schuller , Bernd Edler
IPC分类号： G10L19/00
CPC分类号： G10L21/04 , G10L19/0212 , G10L19/022 , G10L19/032 , G10L19/167
摘要： An audio signal decoder configured to provide a decoded audio signal representation on the basis of an encoded audio signal representation having a time warp contour evolution information has a time warp contour calculator, a time warp contour data rescaler and a warp decoder. The time warp contour calculator is configured to generate time warp contour data repeatedly restarting from a predetermined time warp contour start value on the basis of a time warp contour evolution information describing a temporal evolution of the time warp contour. The time warp contour data rescaler is configured to rescale at least a portion of the time warp contour data such that a discontinuity at a restart is avoided, reduced or eliminated in a rescaled version of the time warp contour. The warp decoder is configured to provide the decoded audio signal representation on the basis of the encoded audio signal representation and using the rescaled version of the time warp contour.
摘要翻译：配置成基于具有时间扭曲轮廓演变信息的编码音频信号表示来提供解码音频信号表示的音频信号解码器具有时间扭曲轮廓计算器，时间扭曲轮廓数据重定标器和扭曲解码器。时间扭曲轮廓计算器被配置为基于描述时间扭曲轮廓的时间演变的时间扭曲轮廓演化信息，从预定的时间扭曲轮廓开始值产生重复重新起动的时间扭曲轮廓数据。时间扭曲轮廓数据重定标器被配置为重新缩放时间扭曲轮廓数据的至少一部分，使得在时间扭曲轮廓的重新缩放版本中避免，减少或消除重启时的不连续性。扭曲解码器被配置为基于编码的音频信号表示并使用时间扭曲轮廓的重新缩放版本来提供解码的音频信号表示。

28. 发明申请

US20110173009A1 Apparatus and Method for Encoding/Decoding an Audio Signal Using an Aliasing Switch Scheme 有权
标题翻译：使用混叠开关方案对音频信号进行编码/解码的装置和方法
公开(公告)号：US20110173009A1
公开(公告)日：2011-07-14
申请号：US13004351
申请日：2011-01-11
申请人： Guillaume Fuchs , Jeremie Lecomte , Stefan Bayer , Ralf Geiger , Markus Multrus , Gerald Schuller , Jens Hirschfeld
发明人： Guillaume Fuchs , Jeremie Lecomte , Stefan Bayer , Ralf Geiger , Markus Multrus , Gerald Schuller , Jens Hirschfeld
IPC分类号： G10L19/00
CPC分类号： G10L19/20 , G10L19/02 , G10L19/022 , G10L19/04
摘要： An apparatus for encoding an audio signal includes the windower for windowing a first block of the audio signal using an analysis window having an aliasing portion and a further portion. The apparatus furthermore includes a processor for processing the first sub-block of the audio signal associated with the aliasing portion by transforming the sub-block from a domain into a different domain subsequent to windowing the first sub-block to obtain the processed first sub-block, and for processing a second sub-block of the audio signal associated with the further portion by transforming the second sub-block from the domain into the different domain before windowing the second sub-block to obtain a processed second sub-block. The apparatus furthermore includes a transformer for converting the processed first sub-block and the processed second sub-block from the different domain into a further different domain using the same block transform rule to obtain a converted first block which may then be compressed using any of the well-known data compression algorithms. Thus, a critically sampled switch between two coding modes can be obtained, since aliasing portions occurring in two different domains are matched to each other.
摘要翻译：用于编码音频信号的装置包括用于使用具有混叠部分和另一部分的分析窗口对音频信号的第一块进行加窗的加窗器。该装置还包括处理器，用于通过在将第一子块加窗以获得处理的第一子块之后，将子块从域变换为不同的域来处理与混叠部分相关联的音频信号的第一子块，并且用于通过在开启第二子块之前将第二子块从该域变换为不同的域来处理与另一部分相关联的音频信号的第二子块，以获得经处理的第二子块。该装置还包括一个变换器，用于使用相同的块变换规则将处理的第一子块和处理的第二子块从不同的域转换成另一个不同的域，以获得转换的第一块，然后可以使用众所周知的数据压缩算法。因此，由于发生在两个不同域中的混叠部分彼此匹配，因此可以获得两种编码模式之间的批量采样切换。

29. 发明授权

US09043216B2 Audio signal decoder, time warp contour data provider, method and computer program 有权
标题翻译：音频信号解码器，时间扭曲轮廓数据提供者，方法和计算机程序
公开(公告)号：US09043216B2
公开(公告)日：2015-05-26
申请号：US12935718
申请日：2009-07-01
申请人： Stefan Bayer , Sascha Disch , Ralf Geiger , Guillaume Fuchs , Max Neuendorf , Gerald Schuller , Bernd Edler
发明人： Stefan Bayer , Sascha Disch , Ralf Geiger , Guillaume Fuchs , Max Neuendorf , Gerald Schuller , Bernd Edler
IPC分类号： G10L21/04 , G10L19/00 , G10L19/02 , G10L19/022
CPC分类号： G10L21/04 , G10L19/0212 , G10L19/022 , G10L19/032 , G10L19/167
摘要： An audio signal decoder has a time warp contour calculator, a time warp contour data rescaler and a warp decoder. The time warp contour calculator is configured to generate time warp contour data repeatedly restarting from a predetermined time warp contour start value, based on time warp contour evolution information describing a temporal evolution of the time warp contour. The time warp contour data rescaler is configured to rescale at least a portion of the time warp contour data such that a discontinuity at a restart is avoided, reduced or eliminated in a rescaled version of the time warp contour. The warp decoder is configured to provide the decoded audio signal representation, based on an encoded audio signal representation and using the rescaled version of the time warp contour.
摘要翻译：音频信号解码器具有时间扭曲轮廓计算器，时间扭曲轮廓数据重定标器和扭曲解码器。时间扭曲轮廓计算器被配置为基于描述时间扭曲轮廓的时间演变的时间扭曲轮廓演化信息，从预定时间扭曲轮廓开始值产生重复重新起动的时间扭曲轮廓数据。时间扭曲轮廓数据重定标器被配置为重新缩放时间扭曲轮廓数据的至少一部分，使得在时间扭曲轮廓的重新缩放版本中避免，减少或消除重启时的不连续性。扭曲解码器被配置为基于编码的音频信号表示并使用时间扭曲轮廓的重新缩放版本来提供解码的音频信号表示。

30. 发明授权

US08862480B2 Audio encoding/decoding with aliasing switch for domain transforming of adjacent sub-blocks before and subsequent to windowing 有权
标题翻译：使用混叠开关进行音频编码/解码，用于在开窗之前和之后对相邻子块进行域变换
公开(公告)号：US08862480B2
公开(公告)日：2014-10-14
申请号：US13004351
申请日：2011-01-11
申请人： Guillaume Fuchs , Jeremie Lecomte , Stefan Bayer , Ralf Geiger , Markus Multrus , Gerald Schuller , Jens Hirschfeld
发明人： Guillaume Fuchs , Jeremie Lecomte , Stefan Bayer , Ralf Geiger , Markus Multrus , Gerald Schuller , Jens Hirschfeld
IPC分类号： G10L19/02 , G10L19/04 , G10L19/20 , G10L19/022
CPC分类号： G10L19/20 , G10L19/02 , G10L19/022 , G10L19/04
摘要： An apparatus for encoding an audio signal includes the windower for windowing a first block of the audio signal using an analysis window having an aliasing portion and a further portion. The apparatus furthermore includes a processor for processing the first sub-block of the audio signal associated with the aliasing portion by transforming the sub-block from a domain into a different domain subsequent to windowing the first sub-block to obtain the processed first sub-block, and for processing a second sub-block of the audio signal associated with the further portion by transforming the second sub-block from the domain into the different domain before windowing the second sub-block to obtain a processed second sub-block. Thus, a critically sampled switch between two coding modes can be obtained.
摘要翻译：用于编码音频信号的装置包括用于使用具有混叠部分和另一部分的分析窗口对音频信号的第一块进行加窗的加窗器。该装置还包括处理器，用于通过在将第一子块加窗以获得处理的第一子块之后，将子块从域变换为不同的域来处理与混叠部分相关联的音频信号的第一子块，并且用于通过在开启第二子块之前将第二子块从该域变换为不同的域来处理与另一部分相关联的音频信号的第二子块，以获得经处理的第二子块。因此，可以获得两种编码模式之间的批量采样开关。

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