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61. 发明公开

EP2362386A1 Watermark generator, watermark decoder, method for providing a watermark signal in dependence on binary message data, method for providing binary message data in dependence on a watermarked signal and computer program using a two-dimensional bit spreading 审中-公开
标题翻译：水印发生器水印解码器中，响应于二进制数据，响应于一个水印信号提供二进制数据的通知的方法，和计算机程序的通知提供水印信号与二维位加宽的方法
公开(公告)号：EP2362386A1
公开(公告)日：2011-08-31
申请号：EP10154960.8
申请日：2010-02-26
申请人： Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V.
发明人： Wabnik, Stefan , Breiling, Marco , Borsum, Juliane , Grill, Bernhard , Eberlein, Ernst , del Galdo, Giovanni , Krägeloh, Stefan , Zitzmann, Reinhard , Greevenbosch, Bert , Bliem, Tobias , Pickel, Jörg
IPC分类号： G10L19/00
CPC分类号： G10L19/018 , H04H20/14 , H04H60/29
摘要： A watermark generator (2400) for providing a watermark signal (2420) in dependence on binary message data (2410) comprises an information processor (2430) configured to provide, in dependence on a single message bit of the binary message data, a 2-dimensional spread information (2432) representing the message bit in the form of a set of time-frequency-domain values. The watermark generator also comprises a watermark signal provider (2440) configured to provide the watermark signal on the basis of the 2-dimensional spread information.
A Watermark detector, methods and computer programs are also described.
摘要翻译：水印发生器（2400），用于根据二进制消息数据提供在依赖性的水印信号（2420）（2410）包括被配置为提供信息处理器（2430）的，在对二进制消息数据的单个消息比特的依赖，2- 二维扩展信息（2432）表示一组时频域值的形式的消息比特。水印发生器，以便包括被配置成提供的二维扩展信息的基础上，水印信号中的水印信号提供器（2440）。的水印检测器，所以方法和计算机程序中描述。

62. 发明公开

EP2362385A1 Watermark signal provision and watermark embedding 审中-公开
标题翻译： Wasserzeichensignalversorger und Wasserzeicheneinbettung
公开(公告)号：EP2362385A1
公开(公告)日：2011-08-31
申请号：EP10154956.6
申请日：2010-02-26
申请人： Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V.
发明人： Wabnik, Stefan , Grill, Bernhard , Eberlein, Ernst , Del Galdo, Giovanni , Krägeloh, Stefan , Zitzmann, Reinhard , Bliem, Tobias , Borsum, Juliane , Breiling, Marco , Pickel, Jörg , Greevenbosch, Bert
IPC分类号： G10L19/00
CPC分类号： G10L19/018 , H04H20/14 , H04H60/29 , H04H60/33
摘要： A watermark signal provider (2400) for providing a watermark signal (2440) suitable for being hidden in an audio signal (2430) when the watermark signal is added to the audio signal, such that the watermark signal represents watermark data (2450), is described. The watermark signal provider comprises a psychoacoustical processor (2410) for determining a masking threshold of the audio signal; and a modulator (2420) for generating the watermark signal from a superposition of sample-shaping functions spaced apart from each other at a sample time interval (T b ) of a time-discrete representation of the watermark data, each sample-shaping function being amplitude-weighted with a respective sample of the time-discrete representation, multiplied by a respective amplitude weight depending on the masking threshold, the modulator being configured such that the sample time interval is shorter than a time extension of the sample-shaping functions; and the respective amplitude weight also depends on samples of the time-discrete representation neighboring the respective sample in time.
摘要翻译：一种水印信号提供器（2400），用于当将水印信号添加到音频信号时提供适于隐藏在音频信号（2430）中的水印信号（2440），使得水印信号表示水印数据（2450），是描述。水印信号提供器包括用于确定音频信号的掩蔽阈值的心理声学处理器（2410）以及调制器（2420），用于在水印数据的时间离散表示的采样时间间隔（T b）处从彼此间隔开的采样整形功能的叠加产生水印信号，每个采样整形功能是用时间离散表示的相应样本进行幅度加权，乘以相应的根据掩蔽阈值的幅度权重，调制器被配置为使得采样时间间隔短于样本整形函数的时间延长; 并且相应的振幅权重也取决于在时间上与相应样本相邻的时间离散表示的样本。

63. 发明公开

EP2362383A1 Watermark decoder and method for providing binary message data 审中-公开
标题翻译： Wasserzeichendecodierer und Verfahren zur BereitstellungbinärerBenachrichtigungsdaten
公开(公告)号：EP2362383A1
公开(公告)日：2011-08-31
申请号：EP10154951.7
申请日：2010-02-26
申请人： Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V.
发明人： Wabnik, Stefan , Grill, Bernhard , Eberlein, Ernst , del Galdo, Giovanni , Krägeloh, Stefan , Zitzmann, Reinhard , Bliem, Tobias , Borsum, Juliane , Breiling, Marco , Pickel, Jörg , Greevenbosch, Bert
IPC分类号： G10L19/00
CPC分类号： G10L19/018
摘要： A watermark decoder comprises a time-frequency-domain representation provider, a memory unit, a synchronization determiner and a watermark extractor. The time-frequency-domain representation provider provides a frequency-domain representation of the watermarked signal for a plurality of time blocks. The memory unit stores the frequency-domain representation of the watermarked signal for a plurality of time blocks. Further, the synchronization determiner identifies an alignment time block based on the frequency-domain representation of the watermarked signal of a plurality of time blocks. The watermark extractor provides binary message data based on stored frequency-domain representations of the watermarked signal of time blocks temporally preceding the identified alignment time block considering a distance to the identified alignment time block.
摘要翻译：水印解码器包括时域表示提供者，存储单元，同步确定器和水印提取器。时域表示提供者为多个时间块提供水印信号的频域表示。存储单元存储多个时间块的水印信号的频域表示。此外，同步确定器基于多个时间块的水印信号的频域表示来识别对准时间块。考虑到到所识别的对准时间块的距离，水印提取器基于时间上在所识别的对准时间块之前的时间块的水印信号的存储频域表示来提供二进制消息数据。

64. 发明公开

EP2346030A1 Audio encoder, method for encoding an audio signal, audio stream and computer program 有权
标题翻译： Vorrichtung und Verfahren zur Audiokodierung und Computerprogramm
公开(公告)号：EP2346030A1
公开(公告)日：2011-07-20
申请号：EP11157204.6
申请日：2009-06-25
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Rettelbach, Nikolaus , Grill, Bernhard , Fuchs, Guillaume , Geyersberger, Stefan , Multrus, Markus , Popp, Harald , Herre, Jürgen , Wabnik, Stefan , Schuller, Gerald , Hirschfeld, Jens
IPC分类号： G10L19/00 , G10L19/02
CPC分类号： G10L19/0017 , G10L19/02 , G10L19/0204 , G10L19/022 , G10L19/028 , G10L19/035 , G10L25/18
摘要： An encoder for providing an audio stream on the basis of a transform-domain representation of an input audio signal comprises a quantization error calculator configured to determine a multi-band quantization error over a plurality of frequency bands of the input audio signal for which separate band gain information is available. The encoder also comprises an audio stream provider configured to provide the audio stream such that the audio stream comprises an information describing an audio content of the frequency bands and an information describing the multi-band quantization error.
A decoder for providing a decoded representation of an audio signal on the basis of an encoded audio stream representing spectral components of frequency bands of the audio signal comprises a noise filler configured to introduce noise into spectral components of a plurality of frequency bands to which separate frequency band gain information is associated on the basis of a common multi-band noise intensity value.
摘要翻译：一种用于基于输入音频信号的变换域表示来提供音频流的编码器包括：量化误差计算器，被配置为确定输入音频信号的多个频带上的多频带量化误差，获取信息可用。编码器还包括被配置为提供音频流的音频流提供器，使得音频流包括描述频带的音频内容的信息和描述多频带量化误差的信息。用于基于表示音频信号的频带的频带的频谱分量的编码音频流提供音频信号的解码表示的解码器包括：噪声填充器，被配置为将噪声引入多个频带的频谱分量中，基于公共多频带噪声强度值来关联频带增益信息。

65. 发明公开

EP2214164A2 Audio decoder, audio encoder, methods for decoding and encoding an audio signal and computer program 有权
标题翻译： Audiodekodierer，Verfahren zum Dekodieren eines Audiosignals und Computerprogramm
公开(公告)号：EP2214164A2
公开(公告)日：2010-08-04
申请号：EP10152001.3
申请日：2010-01-28
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Neuendorf, Max , Lecomte, Jérémie , Multrus, Markus , Bayer, Stefan , Nagel, Frederik , Fuchs, Guillaume , Robilliard, Julien , Rettelbach, Nikolaus , Geiger, Ralf , Grill, Bernhard
IPC分类号： G10L19/02 , G10L19/14
CPC分类号： G10L19/022 , G10L19/20
摘要： An audio decoder for providing a decoded representation of an audio content on the basis of an encoded representation of the audio content comprises a linear-prediction-domain decoder core configured to provide a time-domain representation of an audio frame on the basis of a set of linear-prediction domain parameters associated with the audio frame and a frequency-domain decoder core configured to provide a time-domain representation of an audio frame on the basis of a set of frequency-domain parameters, taking into account a transform window out of a set comprising a plurality of different transform windows. The audio decoder comprises a signal combiner configured to overlap-and-add-time-domain representations of subsequent audio frames encoded in different domains, in order to smoothen a transition between the time-domain representations of the subsequent frames. The set of transform windows comprises one or more windows specifically adapted for a transition between a frequency-domain core mode and a linear-prediction-domain core mode.
摘要翻译：一种音频解码器，用于基于音频内容的经编码的表示来提供音频内容的解码表示，包括：线性预测域解码器核心，被配置为基于设置提供音频帧的时域表示与所述音频帧相关联的线性预测域参数以及被配置为基于一组频域参数提供音频帧的时域表示的频域解码器核心，考虑到从一组包括多个不同的变换窗口。音频解码器包括信号组合器，其被配置为对在不同域中编码的后续音频帧进行重叠和加时域表示，以平滑后续帧的时域表示之间的转换。变换窗口集合包括一个或多个窗口，其特别适用于频域核心模式和线性预测域核心模式之间的转换。

66. 发明公开

EP2109098A2 Apparatus and method for generating audio subband values and apparatus and method for generating time-domain audio samples 有权
标题翻译：装置和方法，用于产生音频子带值和的装置和方法用于产生时域音频采样
公开(公告)号：EP2109098A2
公开(公告)日：2009-10-14
申请号：EP09010010.8
申请日：2007-10-23
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Schnell, Markus , Lutzky, Manfred , Lohwasser, Markus , Schmidt, Markus , Gayer, Marc , Mellar, Michael , Edler, Bernd , Multrus, Markus , Schuller, Gerald , Geiger, Ralf , Grill, Bernhard
IPC分类号： G10L19/02 , H03H17/02
摘要： An embodiment of an apparatus (100) for generating audio subband values in audio subband channels comprises an analysis windower (110) for windowing a frame (120) 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 (190) comprising a sequence of window coefficients to obtain windowed samples. The analysis window function (190) comprises a first group (200) of window coefficients and a second group (210) of window coefficients. The first group (200) of window coefficients is used for windowing later time-domain samples and the second group (210) of window coefficients is used for windowing an earlier time-domain samples. The apparatus (100) further comprises a calculator (170) for calculating the audio subband values using the windowed samples.

67. 发明授权

EP1873754B1 Audio encoder, audio decoder and audio processor having a dynamically variable warping characteristic 有权
标题翻译：音频编码器，音频解码器和音频处理器与一个动态可变的特性经
公开(公告)号：EP1873754B1
公开(公告)日：2008-09-10
申请号：EP06013604.1
申请日：2006-06-30
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Wabnik, Stefan , Schuller, Gerald , Herre, Jürgen , Grill, Bernhard , Multrus, Markus , Bayer, Stefan , Krämer, Ulrich , Hirschfeld, Jens
IPC分类号： G10L19/00
CPC分类号： G10L19/20 , G10L19/265
摘要： An audio encoder, an audio decoder or an audio processor includes a filter for generating a filtered audio signal, the filter having a variable warping characteristic, the characteristic being controllable in response to a time-varying control signal, the control signal indicating a small or no warping characteristic or a comparatively high warping characteristic. Furthermore, a controller is connected for providing the time-varying control signal, which depends on the audio signal. The filtered audio signal can be introduced to an encoding processor having different encoding algorithms, one of which is a coding algorithm adapted to a specific signal pattern. Alternatively, the filter is a post-filter receiving a decoded audio signal.

68. 发明公开

EP1873754A1 Audio encoder, audio decoder and audio processor having a dynamically variable warping characteristic 有权
标题翻译： Audiokodierer，Audiodekodierer und Audioprozessor mit einer dynamisch variablen Warp-Charakteristik
公开(公告)号：EP1873754A1
公开(公告)日：2008-01-02
申请号：EP06013604.1
申请日：2006-06-30
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Wabnik, Stefan , Schuller, Gerald , Herre, Jürgen , Grill, Bernhard , Multrus, Markus , Bayer, Stefan , Krämer, Ulrich , Hirschfeld, Jens
IPC分类号： G10L19/00
CPC分类号： G10L19/20 , G10L19/265
摘要： An audio encoder, an audio decoder or an audio processor includes a filter for generating a filtered audio signal, the filter having a variable warping characteristic, the characteristic being controllable in response to a time-varying control signal, the control signal indicating a small or no warping characteristic or a comparatively high warping characteristic. Furthermore, a controller is connected for providing the time-varying control signal, which depends on the audio signal. The filtered audio signal can be introduced to an encoding processor having different encoding algorithms, one of which is a coding algorithm adapted to a specific signal pattern. Alternatively, the filter is a post-filter receiving a decoded audio signal.
摘要翻译：音频编码器，音频解码器或音频处理器包括用于产生经滤波的音频信号的滤波器，该滤波器具有可变的翘曲特性，该特性可响应于时变控制信号而被控制，该控制信号表示小的或无翘曲特性或较高翘曲特性。此外，连接控制器以提供取决于音频信号的时变控制信号。滤波后的音频信号可以被引入具有不同编码算法的编码处理器，其中之一是适用于特定信号模式的编码算法。或者，滤波器是接收经解码的音频信号的后置滤波器。

69. 发明公开

EP0612156A2 Digitales Codierverfahren 失效
标题翻译：数字电影Codierverfahren。
公开(公告)号：EP0612156A2
公开(公告)日：1994-08-24
申请号：EP94106503.9
申请日：1990-04-12
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： Grill, Bernhard , Sporer, Thomas , Kürten, Bernd , Seitzer, Dieter , Eberlein, Ernst , Brandenburg, Karl-Heinz
IPC分类号： H03M7/42
CPC分类号： H03M7/3053 , H03M7/42
摘要： Beschrieben wird ein digitales Codierverfahren für die Übertragung und/oder Speicherung von akustischen Signalen und insbesondere von Musiksignalen, bei dem Abtastwerte des akustischen Signals mittels einer Transformation oder einer Filterbank in eine Folge von zweiten Abtastwerten transformiert werden, die die spektrale Zusammensetzung des akustischen Signals wie-dergeben, und diese Folge von zweiten Abtastwerten entsprechend den Anforderungen mit unterschiedlicher Genauig-keit quantisiert und teilweise oder ganz mittels eines Optimalcodierers codiert wird, und bei dem bei der Wiedergabe eine entsprechende Decodierung und Rücktransformation erfolgt.
Das erfindungsgemäße Verfahren zeichnet sich dadurch aus, daß in an sich bekannter Weise ein Codierer verwendet wird, bei dem die Auftrittswahrscheinlichkeit des quantisierten Spektralkoeffizienten mit der Länge des Codes derart korreliert ist, daß das Codewort umso kürzer ist, je häufiger der Spektralkoeffizient auftritt, und
daß zur Reduzierung der Tabellengröße des Codierers entweder mehreren Elementen der Folge oder einem Wertebereich ein Codewort sowie gegebenenfalls ein Zusatzcode zugeordnet werden, und
daß ein Teil der Codewörter variabler Länge in einem Raster angeordnet wird, und daß die restlichen Codewörter in die verbleibenden Lücken verteilt werden, so daß ohne vollständige Decodierung oder bei fehlerhafter Übertragung der Anfang eines Codeworts leichter gefunden werden kann.
摘要翻译：描述了用于发送和/或存储声信号，特别是音乐信号的数字编码方法，其中将声信号的采样通过变换或滤波器组变换为第二个再现声信号的频谱组成的样本，根据要求对该第二样本序列进行不同的精度量化，并且通过最佳编码器进行部分或全部编码，其中进行相应的解码和逆变换在繁殖期间。根据本发明的方法的特征在于以本身已知的方式使用编码器的事实，其中量化的频谱系数的发生概率与代码的长度以更频繁的方式相关联发生频谱系数，码字越短，为了减小编码器的表的大小，一个码字，并且如果需要，附加码被分配给序列的多个元素，或者分配给值范围，并且一些可变长度码字被布置在光栅中，并且剩余的码字分布在剩余的间隙中，使得可以更容易地找到码字的开始而没有完全解码，或者在发生错误的情况。

70. 发明公开

EP4300825A2 APPARATUS AND METHOD FOR GENERATING TIME-DOMAIN AUDIO SAMPLES 有权
公开(公告)号：EP4300825A2
公开(公告)日：2024-01-03
申请号：EP23210978.5
申请日：2007-10-23
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Schnell, Markus , Lutzky, Manfred , Lohwasser, Markus , Schmidt, Markus , Gayer, Marc , Mellar, Michael , Edler, Bernd , Multrus, Markus , Schuller, Gerald , Geiger, Ralf , Grill, Bernhard
IPC分类号： H03H17/02
摘要： An embodiment of an apparatus (100) for generating audio subband values in audio subband channels comprises an analysis windower (110) for windowing a frame (120) 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 (190) comprising a sequence of window coefficients to obtain windowed samples. The analysis window function (190) comprises a first group (200) of window coefficients and a second group (210) of window coefficients. The first group (200) of window coefficients is used for windowing later time-domain samples and the second group (210) of window coefficients is used for windowing an earlier time-domain samples. The apparatus (100) further comprises a calculator (170) for calculating the audio subband values using the windowed samples.

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