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公开(公告)号：EP3602553A1
公开(公告)日：2020-02-05
申请号：EP18714687.3
申请日：2018-03-29
发明人： GAMPP, Patrick , UHLE, Christian , DISCH, Sascha , KARAMPOURNIOTIS, Antonios , HAVENSTEIN, Julia , HELLMUTH, Oliver , HERRE, Jürgen , PROKEIN, Peter
IPC分类号： G10L21/038 , G10L25/69
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12.发明公开
公开(公告)号：EP3382704A1
公开(公告)日：2018-10-03
申请号：EP17189988.3
申请日：2017-09-07
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , Friedrich-Alexander-Universität Erlangen-Nürnberg
发明人： GAMPP, Patrick , UHLE, Christian , DISCH, Sascha , KARAMPOURNIOTIS, Antonios , HAVENSTEIN, Julia , HELLMUTH, Oliver , HERRE, Jürgen , PROKEIN, Peter
IPC分类号： G10L25/69 , G10L21/038
CPC分类号： G10L25/69 , G10L21/038
摘要： An apparatus for determining a predetermined characteristic related to a spectral enhancement processing of an audio signal comprises a deriver configured for obtaining a spectrum of the audio signal and for deriving a local maximum signal from the spectrum. The apparatus comprises a determiner configured for determining a similarity between segments of the local maximum signal and comprises a processor for providing an information indicating that the audio signal comprises the predetermined characteristic dependent on an evaluation of the similarity.
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13.发明公开APPARATUS AND METHOD FOR MULTICHANNEL DIRECT-AMBIENT DECOMPOSITION FOR AUDIO SIGNAL PROCESSING 审中-公开装置及方法音频信号处理直接的环境多通道解决方案
公开(公告)号：EP2965540A1
公开(公告)日：2016-01-13
申请号：EP13788708.9
申请日：2013-10-23
IPC分类号： H04S3/00 , G10L19/008
CPC分类号： G10L19/008 , G10L21/028 , G10L25/18 , G10L25/21 , H04S3/008 , H04S3/02 , H04S2400/01
摘要： An apparatus for generating one or more audio output channel signals depending on two or more audio input channel signals is provided. Each of the two or more audio input channel signals comprises direct signal portions and ambient signal portions. The apparatus comprises a filter determination unit for determining a filter by estimating first power spectral density information and by estimating second power spectral density information. Moreover, the apparatus comprises a signal processor for generating the one or more audio output channel signals by applying the filter on the two or more audio input channel signals. The first power spectral density information indicates power spectral density information on the two or more audio input channel signals, and the second power spectral density information indicates power spectral density information on the ambient signal portions of the two or more audio input channel signals.
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公开(公告)号：EP3602552A1
公开(公告)日：2020-02-05
申请号：EP18714686.5
申请日：2018-03-29
发明人： GAMPP, Patrick , UHLE, Christian , DISCH, Sascha , KARAMPOURNIOTIS, Antonios , HAVENSTEIN, Julia , HELLMUTH, Oliver , HERRE, Jürgen , PROKEIN, Peter
IPC分类号： G10L21/038 , G10L25/69
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15.发明公开
公开(公告)号：EP3602548A1
公开(公告)日：2020-02-05
申请号：EP18714689.9
申请日：2018-03-29
发明人： DISCH, Sascha , UHLE, Christian , HERRE, Jürgen , PROKEIN, Peter , GAMPP, Patrick , KARAMPOURNIOTIS, Antonios , HAVENSTEIN, Julia , HELLMUTH, Oliver , RICHTER, Daniel
IPC分类号： G10L19/03 , G10L19/26 , G10L19/025
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16.发明授权
公开(公告)号：EP2965540B1
公开(公告)日：2019-05-22
申请号：EP13788708.9
申请日：2013-10-23
IPC分类号： H04S3/00 , G10L19/008
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公开(公告)号：EP3382702A1
公开(公告)日：2018-10-03
申请号：EP17189992.5
申请日：2017-09-07
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , Friedrich-Alexander-Universität Erlangen-Nürnberg
发明人： GAMPP, Patrick , UHLE, Christian , HAVENSTEIN, Julia , HELLMUTH, Oliver , DISCH, Sascha , KARAMPOURNIOTIS, Antonios , HERRE, Jürgen , PROKEIN, Peter
IPC分类号： G10L21/038 , G10L25/69
CPC分类号： G10L25/69 , G10L21/038
摘要： An apparatus for determining a predetermined characteristic related to an artificial bandwidth limitation processing of an audio signal comprises a slope evaluator configured for evaluating a slope of a spectrum of the audio signal to obtain a slope evaluation result. The apparatus comprises a frequency evaluator configured for evaluating a cut-off frequency of the spectrum of the audio signal to obtain a frequency evaluation result, and comprises a processor for providing an information indicating that the audio signal comprises the predetermined characteristic dependent on an evaluation of the slope evaluation result and an evaluation of the frequency evaluation result.
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18.发明公开
公开(公告)号：EP3382701A1
公开(公告)日：2018-10-03
申请号：EP17183135.7
申请日：2017-07-25
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , Friedrich-Alexander-Universität Erlangen-Nürnberg
发明人： DISCH, Sascha , UHLE, Christian , HERRE, Jürgen , PROKEIN, Peter , GAMPP, Patrick , KARAMPOURNIOTIS, Antonios , HAVENSTEIN, Julia , HELLMUTH, Oliver , RICHTER, Daniel
IPC分类号： G10L19/03 , G10L19/26 , G10L19/025
CPC分类号： G10L19/03 , G10L19/025 , G10L19/26
摘要： Apparatus for post-processing (20) an audio signal, comprising: a time-spectrum-converter (700) for converting the audio signal into a spectral representation comprising a sequence of spectral frames; a prediction analyzer (720) for calculating prediction filter data for a prediction over frequency within a spectral frame; a shaping filter (740) controlled by the prediction filter data for shaping the spectral frame to enhance a transient portion within the spectral frame; and a spectrum-time-converter (760) for converting a sequence of spectral frames comprising a shaped spectral frame into a time domain.
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19.发明公开
公开(公告)号：EP3175445A1
公开(公告)日：2017-06-07
申请号：EP15745433.1
申请日：2015-07-27
IPC分类号： G10L19/008 , G10L21/0264
摘要： An apparatus for enhancing an audio signal comprises a signal processor for processing the audio signal in order to reduce or eliminate transient and tonal portions of the processed signal and a decorrelator for generating a first decorrelated signal and a second decorrelated signal from the processed signal. The apparatus further comprises a combiner for weightedly combining the first and the second decorrelated signal and the audio signal or a signal derived from the audio signal by coherence enhancement using time variant weighting factors and to obtain a two-channel audio signal. The apparatus further comprises a controller for controlling the time variant weighting factors by analyzing the audio signal so that different portions of the audio signal are multiplied by different weighting factors and the two-channel audio signal has a time variant degree of decorrelation.
摘要翻译： 一种用于增强音频信号的设备包括：信号处理器，用于处理音频信号以便减少或消除经处理的信号的瞬态和音调部分;解相关器，用于从经处理的信号中生成第一解相关信号和第二解相关信号。 该设备还包括组合器，用于使用时间变量加权因子通过相干增强来加权组合第一和第二解相关信号和音频信号或者从音频信号导出的信号，并且获得双声道音频信号。 该设备还包括控制器，用于通过分析音频信号来控制时变加权因子，使得音频信号的不同部分乘以不同的加权因子，并且双声道音频信号具有时变的去相关程度。
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20.发明公开METHOD AND APPARATUS FOR DECOMPOSING A STEREO RECORDING USING FREQUENCY-DOMAIN PROCESSING EMPLOYING A SPECTRAL SUBTRACTOR 审中-公开方法和设备立体声录制通过频域处理分离使用频谱减法
公开(公告)号：EP2730103A1
公开(公告)日：2014-05-14
申请号：EP12732836.7
申请日：2012-07-03
发明人： UHLE, Christian , FINAUER, Stefan , GAMPP, Patrick , HELLMUTH, Oliver , PROKEIN, Peter , STÖCKLMEIER, Christian
IPC分类号： H04S3/00
摘要： An apparatus for generating a stereo side signal having a first side channel and a second side channel from a stereo input signal having a first input channel and a second input channel is provided. The apparatus comprises a modification information generator (110) for generating modification information based on mid-side information. Furthermore, the apparatus comprises a signal manipulator (120) being adapted to manipulate the first input channel based on the modification information to obtain the first side channel and being adapted to manipulate the second input channel based on the modification information to obtain the second side channel. The modification information generator (110) comprises a spectral subtractor (115) for generating the modification information by generating a difference value indicating a difference between a mono mid signal or a mono side signal of the stereo input signal and the first or the second input channel.
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