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41. 发明公开

EP2410520A1 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：时间扭曲激活信号提供器，音频信号编码器，用于提供时间扭曲激活信号的方法，用于编码音频信号的方法和计算机程序
公开(公告)号：EP2410520A1
公开(公告)日：2012-01-25
申请号：EP11180988.5
申请日：2009-07-06
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Bayer, Stefan , Disch, Sascha , Geiger, Ralf , Neuendorf, Max , Schuller, Gerald , Fuchs, Guillaume , Edler, Bernd
IPC分类号： G10L19/00 , G10L21/04
CPC分类号： G10L21/04 , G10L19/002 , G10L19/022 , G10L19/025 , G10L19/028 , G10L19/032 , G10L19/265 , G10L21/043 , G10L25/78 , G10L25/90
摘要： An audio encoder comprises a window function controller (504), a windower (502), a time warper (506) with a final quality check functionality, a time/frequency converter (508), a TNS stage (510) or a quantizer encoder (512), the window function controller (504), the time warper (506), the TNS stage (510) or an additional noise filling analyzer (524) are controlled by signal analysis results obtained by a time warp analyzer (516) or a signal classifier (520). 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：音频编码器包括窗函数控制器（504），加窗器（502），具有最终质量检查功能的时间扭曲器（506），时间/频率转换器（508），TNS级（510）或量化器编码器通过时间扭曲分析器（516）获得的信号分析结果来控制窗函数控制器（504），时间扭曲器（506），TNS级（510）或附加噪声填充分析器（524）信号分类器（520）。此外，解码器使用取决于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。

42. 发明公开

EP2410519A1 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：聚集时间激活信号提供器，音频信号编码器，用于编码音频信号提供时间打褶激活信号，方法的方法，以及计算机程序
公开(公告)号：EP2410519A1
公开(公告)日：2012-01-25
申请号：EP11180983.6
申请日：2009-07-06
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Bayer, Stefan , Disch, Sascha , Geiger, Ralf , Neuendorf, Max , Schuller, Gerald , Fuchs, Guillaume , Edler, Bernd
IPC分类号： G10L19/00 , G10L21/04
CPC分类号： G10L21/04 , G10L19/002 , G10L19/022 , G10L19/025 , G10L19/028 , G10L19/032 , G10L19/265 , G10L21/043 , G10L25/78 , G10L25/90
摘要： An audio encoder comprises a window function controller (504), a windower (502), a time warper (506) with a final quality check functionality, a time/frequency converter (508), a TNS stage (510) or a quantizer encoder (512), the window function controller (504), the time warper (506), the TNS stage (510) or an additional noise filling analyzer (524) are controlled by signal analysis results obtained by a time warp analyzer (516) or a signal classifier (520). 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：一种音频编码器包括窗口函数控制器（504），一个加窗器（502），一个时间扭曲器（506）与最终质量检查功能上，一时间/频率转换器（508），一个TNS级（510）或一个量化器编码器（512），所述窗口函数控制器（504），所述时间扭曲器（506）中，TNS级（510）或额外的噪声填充分析器（524）通过由时间扭曲分析器（516）获得的信号分析结果来控制或信号分类器（520）。进一步，解码器应用使用操纵的噪声填充估计取决于音频信号的谐波或语音特性的噪声填充手术。

43. 发明公开

EP2388780A1 Apparatus and method for extending or compressing time sections of an audio signal 审中-公开
标题翻译：装置和方法，用于音频信号的时间段的延伸或压缩
公开(公告)号：EP2388780A1
公开(公告)日：2011-11-23
申请号：EP11155349.1
申请日：2011-02-22
申请人： Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V.
发明人： Nagel, Frederik , Geyersberger, Stefan , Disch, Sascha , Neuendorf, Max
IPC分类号： G10L21/04
CPC分类号： G10L21/04
摘要： An audio signal processor (100) comprising an analysis means (104), a manipulation factor unit (106), and a time-stretching and compression device (108). The analysis means (104) is implemented to determine a first measure of information content (M 1 ) of a first time section of an audio signal and a second measure of information content (M 2 ) of a second time section. The manipulation factor unit (106) is implemented to determine a time manipulation factor (ΔD 1 ) for the first time section in dependence on the first measure of information content (M 1 ) and the second measure of information content (M 2 ). The time-stretching and compression device (108) is implemented to time-stretch or compress the first time section according to the manipulation factor (ΔD 1 ) and to treat the second time section differently from the first time section. A corresponding method for adjusting time information content variations of an audio signal (s) is also disclosed. The determination of the first measure of information content and of the second measure of information content may be based on externally provided control information such as meta-data provided along with the audio signal.
摘要翻译：音频信号处理器（100）分析（104）的包括装置，篡改因子单元（106），和一个时间伸展和压缩装置（108）。分析装置（104）被实现为确定性矿的信息内容的音频信号的第一时间段和信息内容的第二度量（M 1）的第二时间部分的第一量度（M 2）。篡改因子单元（106）被实现为确定性矿首次在信息内容的第一度量依赖（M 1）部分和信息内容的第二量度（M 2）时间操控因子（“D 1）。时间拉伸和压缩装置（108）被实现为时间拉伸或压缩第一时间区间gemäß于操纵因子（“D 1），并从第一时间段不同地对待所述第二时间段。用于调节音频信号的时间信息的内容变化的相应方法（一个或多个）IST游离缺失盘。的信息内容和信息内容的第二小节的第一度量的确定可基于外部提供的控制信息：地连同音频信号提供，诸如元数据。

44. 发明公开

EP2293295A3 Device and method for manipulating an audio signal having a transient event 审中-公开
标题翻译：装置和方法用于与瞬态事件操纵的音频信号
公开(公告)号：EP2293295A3
公开(公告)日：2011-09-07
申请号：EP10194095.5
申请日：2009-02-17
申请人： Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V.
发明人： Multrus, Markus , Disch, Sascha , Nagel, Frederik , Rettelbach, Nikolaus , Fuchs, Guillaume
IPC分类号： G10L21/04
CPC分类号： G10L21/04 , G10L19/025
摘要： A signal manipulator for manipulating an audio signal having a transient event may comprise a transient remover (100), a signal processor (110) and a signal inserter (120) for inserting a time portion in a processed audio signal at a signal location where the transient event was removed before processing by said transient remover, so that a manipulated audio signal comprises 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 (110), which would destroy the vertical coherence of a transient.

45. 发明公开

EP2293294A3 Device and method for manipulating an audio signal having a transient event 有权
标题翻译：用于操纵具有瞬变事件的音频信号的设备和方法
公开(公告)号：EP2293294A3
公开(公告)日：2011-09-07
申请号：EP10194088.0
申请日：2009-02-17
申请人： Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V.
发明人： Multrus, Markus , Disch, Sascha , Nagel, Frederik , Rettelbach, Nikolaus , Fuchs, Guillaume
IPC分类号： G10L21/04
CPC分类号： G10L21/04 , G10L19/025
摘要： A signal manipulator for manipulating an audio signal having a transient event may comprise a transient remover (100), a signal processor (110) and a signal inserter (120) for inserting a time portion in a processed audio signal at a signal location where the transient event was removed before processing by said transient remover, so that a manipulated audio signal comprises 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 (110), which would destroy the vertical coherence of a transient.
摘要翻译：用于处理具有瞬变事件的音频信号的信号操纵器可以包括瞬变去除器（100），信号处理器（110）和信号插入器（120），用于将时间部分插入处理后的音频信号中的信号位置，瞬态事件在由所述瞬态去除器处理之前被去除，使得被操纵的音频信号包括不受处理影响的瞬态事件，由此保持瞬态事件的垂直一致性而不是在信号处理器（110）中执行的任何处理，这会破坏瞬态的垂直一致性。

46. 发明公开

EP2211335A1 Apparatus, method and computer program for obtaining a parameter describing a variation of a signal characteristic of a signal 审中-公开
标题翻译：用于获得参数的装置，方法和计算机程序，其描述了信号的信号特性的变化
公开(公告)号：EP2211335A1
公开(公告)日：2010-07-28
申请号：EP09005486.7
申请日：2009-04-17
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Baeckstroem, Tom , Bayer, Stefan , Geiger, Ralf , Neuendorf, Max , Disch, Sascha
IPC分类号： G10L11/04
CPC分类号： G10L25/90
摘要： An apparatus for obtaining a parameter describing a variation of a signal characteristic of a signal on the basis of actual transform-domain parameters describing the audio signal in transform-domain comprises a parameter determinator. The parameter determinator is configured to determine one or more model parameters of a transform-domain variation model describing an evolution of the transform-domain parameters in dependence on one or more model parameters representing a signal characteristic.
摘要翻译：用于获得参数的实际变换域参数在变换域中描述所述音频信号的基础上描述一个信号的信号特性的变化的设备包括：一个参数确定。参数确定器被配置为确定矿一个或变换域变体模型中在表示特征信号的一个或多个模型参数的依赖变换域参数的演化的描述的多个模型参数。

47. 发明公开

EP2154911A1 An apparatus for determining a spatial output multi-channel audio signal 审中-公开
标题翻译： Vorrichtung zur Bestimmung einesräumlichenMehrkanalausgangsaudiosignals
公开(公告)号：EP2154911A1
公开(公告)日：2010-02-17
申请号：EP08018793.3
申请日：2008-10-28
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Disch, Sascha , Pulkki, Ville , Laitinen, Mikko-Ville , Erkut, Cumhur
IPC分类号： H04S7/00
CPC分类号： H04S7/30 , H04S2400/11 , H04S2420/03
摘要： An apparatus (100) for determining a spatial output multi-channel audio signal based on an input audio signal and an input parameter. The apparatus (100) comprises a decomposer (110) for decomposing the input audio signal based on the input parameter to obtain a first decomposed signal and a second decomposed signal different from each other. Furthermore, the apparatus (100) comprises a renderer (110) for rendering the first decomposed signal to obtain a first rendered signal having a first semantic property and for rendering the second decomposed signal to obtain a second rendered signal having a second semantic property being different from the first semantic property. The apparatus (100) comprises a processor (130) for processing the first rendered signal and the second rendered signal to obtain the spatial output multi-channel audio signal.
摘要翻译：一种用于基于输入音频信号和输入参数来确定空间输出多声道音频信号的装置（100）。装置（100）包括分解器（110），用于基于输入参数分解输入音频信号，以获得彼此不同的第一分解信号和第二分解信号。此外，装置（100）包括用于渲染第一分解信号以获得具有第一语义属性的第一渲染信号的渲染器（110），并且用于渲染第二分解信号以获得具有第二语义属性的第二渲染信号从第一个语义属性。装置（100）包括处理器（130），用于处理第一渲染信号和第二渲染信号，以获得空间输出多声道音频信号。

48. 发明公开

EP4404560A2 AUDIO DECODING METHOD FOR PROCESSING STEREO AUDIO SIGNALS USING A VARIABLE PREDICTION DIRECTION 审中-实审
公开(公告)号：EP4404560A2
公开(公告)日：2024-07-24
申请号：EP24167075.1
申请日：2011-02-17
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Julien, Robilliard , Neusinger, Matthias , Helmrich, Christian , Hilpert, Johannes , Rettelbach, Nikolaus , Disch, Sascha , Edler, Bernd
IPC分类号： H04N19/154
CPC分类号： G10L19/008 , G10L19/06 , H04N19/50 , H04N19/105 , H04N19/156 , H04N19/154 , H04N19/146 , H04N19/70
摘要： An audio or video encoder and an audio or video decoder are based on a combination of two audio or video channels (201, 202) to obtain a first combination signal (204) as a mid signal and a residual signal (205) which can be derived using a predicted side signal derived from the mid signal. The first combination signal and the prediction residual signal are encoded (209) and written (212) into a data stream (213) together with the prediction information (206) derived by an optimizer (207) based on an optimization target (208) and a prediction direction indicator indicating a prediction direction associated with the residual signal. A decoder uses the prediction residual signal, the first combination signal, the prediction direction indicator and the prediction information to derive a decoded first channel signal and a decoded second channel signal. In an encoder example or in a decoder example, a real-to-imaginary transform can be applied for estimating the imaginary part of the spectrum of the first combination signal. For calculating the prediction signal used in the derivation of the prediction residual signal, the real-valued first combination signal is multiplied by a real portion of the complex prediction information and the estimated imaginary part of the first combination signal is multiplied by an imaginary portion of the complex prediction information.

49. 发明公开

EP4270393A3 AUDIO SIMILARITY EVALUATOR, AUDIO ENCODER, METHODS AND COMPUTER PROGRAM 审中-实审
公开(公告)号：EP4270393A3
公开(公告)日：2023-12-20
申请号：EP23180176.2
申请日：2019-05-29
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Disch, Sascha , van de Par, Steven , Niedermeier, Andreas , Burdiel Pérez, Elena , EDLER, Bernd
IPC分类号： G10L25/51 , G10L19/22 , G10L21/0388 , G10L25/18
摘要： An audio similarity evaluator obtains envelope signals for a plurality of frequency ranges on the basis of an input audio signal. The audio similarity evaluator is configured to obtain a modulation information associated with the envelope signals for a plurality of modulation frequency ranges, wherein the modulation information describes the modulation of the envelope signals. The audio similarity evaluator is configured to compare the obtained modulation information with a reference modulation information associated with a reference audio signal, in order to obtain an information about a similarity between the input audio signal and the reference audio signal. An audio encoder uses such an audio similarity evaluator. Another audio similarity evaluator uses a neural net trained using the audio similarity evaluator.

50. 发明公开

EP4270393A2 AUDIO SIMILARITY EVALUATOR, AUDIO ENCODER, METHODS AND COMPUTER PROGRAM 审中-实审
公开(公告)号：EP4270393A2
公开(公告)日：2023-11-01
申请号：EP23180176.2
申请日：2019-05-29
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Disch, Sascha , van de Par, Steven , Niedermeier, Andreas , Burdiel Pérez, Elena , EDLER, Bernd
IPC分类号： G10L25/18
摘要： An audio similarity evaluator obtains envelope signals for a plurality of frequency ranges on the basis of an input audio signal. The audio similarity evaluator is configured to obtain a modulation information associated with the envelope signals for a plurality of modulation frequency ranges, wherein the modulation information describes the modulation of the envelope signals. The audio similarity evaluator is configured to compare the obtained modulation information with a reference modulation information associated with a reference audio signal, in order to obtain an information about a similarity between the input audio signal and the reference audio signal. An audio encoder uses such an audio similarity evaluator. Another audio similarity evaluator uses a neural net trained using the audio similarity evaluator.

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