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31.发明公开
公开(公告)号：EP3247135A1
公开(公告)日：2017-11-22
申请号：EP17173337.1
申请日：2004-04-30
发明人： ENGDEGARD, Jonas , VILLEMOES, Lars
摘要： A synthesizer for generating a decorrelation signal using an input signal is operative on a plurality of subband signals, wherein a subband signal includes a sequence of at least two subband samples, the sequence of the subband samples representing a bandwidth of the subband signal, which is smaller than a bandwidth of the input signal. The synthesizer includes a filter stage (201) for filtering each subband signal using a reverberation filter to obtain a plurality of reverberated subband signals, wherein a plurality of reverberated subband signals together represent the decorrelation signal. This decorrelation signal is used for reconstructing a signal based on a parametrically encoded stereo signal consisting of a mono signal and a coherence measure.
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32.发明公开
公开(公告)号：EP3244640A1
公开(公告)日：2017-11-15
申请号：EP17173338.9
申请日：2004-04-30
发明人： ENGDEGARD, Jonas , VILLEMOES, Lars
摘要： A synthesizer for generating a decorrelation signal using an input signal is operative on a plurality of subband signals, wherein a subband signal includes a sequence of at least two subband samples, the sequence of the subband samples representing a bandwidth of the subband signal, which is smaller than a bandwidth of the input signal. The synthesizer includes a filter stage (201) for filtering each subband signal using a reverberation filter to obtain a plurality of reverberated subband signals, wherein a plurality of reverberated subband signals together represent the decorrelation signal. This decorrelation signal is used for reconstructing a signal based on a parametrically encoded stereo signal consisting of a mono signal and a coherence measure.
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33.发明公开ADVANCED PROCESSING BASED ON A COMPLEX-EXPONENTIAL-MODULATED FILTERBANK AND ADAPTIVE TIME SIGNALLING METHODS 有权基于复指数调制滤波器和自适应时间信号的高级处理
公开(公告)号：EP3244638A1
公开(公告)日：2017-11-15
申请号：EP17173334.8
申请日：2004-04-30
发明人： ENGDEGARD, Jonas , VILLEMOES, Lars
CPC分类号： G10L19/008 , G10L19/0204 , H03H17/0266 , H04S5/00 , H04S2420/03
摘要： A synthesizer for generating a decorrelation signal using an input signal is operative on a plurality of subband signals, wherein a subband signal includes a sequence of at least two subband samples, the sequence of the subband samples representing a bandwidth of the subband signal, which is smaller than a bandwidth of the input signal. The synthesizer includes a filter stage (201) for filtering each subband signal using a reverberation filter to obtain a plurality of reverberated subband signals, wherein a plurality of reverberated subband signals together represent the decorrelation signal. This decorrelation signal is used for reconstructing a signal based on a parametrically encoded stereo signal consisting of a mono signal and a coherence measure.
摘要翻译： 用于使用输入信号生成解相关信号的合成器对多个子带信号起作用，其中子带信号包括至少两个子带样本的序列，子带样本的序列表示子带信号的带宽，其是 小于输入信号的带宽。 合成器包括用于使用混响滤波器对每个子带信号进行滤波以获得多个混响子带信号的滤波器级（201），其中多个混响子带信号一起表示解相关信号。 该解相关信号用于基于由单声道信号和相干性测量组成的参数编码的立体声信号来重建信号。
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34.发明授权IMPROVEMENT OF AN AUDIO SIGNAL OF AN FM STEREO RADIO RECEIVER BY USING PARAMETRIC STEREO 有权用参数立体声改进FM立体声无线电接收机的音频信号
公开(公告)号：EP3035712B1
公开(公告)日：2017-11-08
申请号：EP16150443.6
申请日：2010-09-07
CPC分类号： H04S3/00 , G10L19/008 , H04H40/45 , H04H40/72 , H04H40/81 , H04S1/00 , H04S1/007 , H04S5/00 , H04S2420/03
摘要： The invention relates to an apparatus for improving a stereo audio signal of an FM stereo radio receiver. The apparatus comprises a parametric stereo (PS) parameter estimation stage. The parameter estimation stage is configured to determine one or more parametric stereo parameters based on the stereo audio signal in a frequency-variant or frequency-invariant manner. Preferably, these PS parameters are time- and frequency-variant. Moreover, the apparatus comprises an upmix stage. The upmix stage is configured to generate the improved stereo signal based on a first audio signal and the one or more parametric stereo parameters. The first audio signal is obtained from the stereo audio signal, e.g. by a downmix operation in a downmix stage. The PS parameter estimation stage may be part of a PS encoder. The upmix stage may be part of a PS decoder.
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公开(公告)号：EP2761618B1
公开(公告)日：2016-11-30
申请号：EP12772742.8
申请日：2012-10-01
CPC分类号： H04H40/45 , G10L19/008 , G10L25/69 , H04B1/1676
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公开(公告)号：EP1808047B1
公开(公告)日：2015-06-17
申请号：EP05807484.0
申请日：2005-10-31
IPC分类号： G10L19/008 , H04S5/02
CPC分类号： H04S5/02 , G10L19/008
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公开(公告)号：EP2761618A2
公开(公告)日：2014-08-06
申请号：EP12772742.8
申请日：2012-10-01
CPC分类号： H04H40/45 , G10L19/008 , G10L25/69 , H04B1/1676
摘要： The present document relates to audio signal processing, in particular to an apparatus and a corresponding method for improving an audio signal of an FM stereo radio receiver. In particular, the present document relates to a method and system for reliably detecting the quality of a received FM stereo radio signal and for selecting an appropriate processing based on the detected quality. An apparatus (20) configured to estimate the quality of a received multi-channel FM radio signal is described. The received multi¬ channel FM radio signal is representable as a mid signal and a side signal, and the side signal is indicative of a difference between a left signal and a right signal. The apparatus (20) comprises a power determination unit configured to determine (101) a power of the mid signal, referred to as mid power, and a power of the side signal, referred to as side power; a ratio determination unit configured to determine (102) a ratio of the mid power and the side power, thereby yielding a mid-to-side ratio; and a quality determination unit configured to determine (105) a quality indicator of the received FM radio signal based at least on the mid-to-side ratio.
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公开(公告)号：EP2659482A1
公开(公告)日：2013-11-06
申请号：EP11805340.4
申请日：2011-12-15
CPC分类号： H04R29/00 , G06F17/00 , G06F17/3053 , G10H1/0008 , G10H2210/061 , G10H2240/151 , G10L25/48
摘要： Techniques for ranking representative segments in media data are provided. Media features of many different types may be extracted from the media data. A plurality of ranking scores may be assigned to a plurality of candidate representative segments. Each individual candidate representative segment in the plurality of candidate representative segments comprises at least one scene in one or more statistical patterns in media features of the media data based on one or more types of features extractable from the media data. Each individual ranking score in the plurality of ranking scores may be assigned to an individual candidate representative segment in the plurality of candidate representative segments. A representative segment to be played to an end user may be selected from the candidate representative segments, based on the plurality of ranking scores.
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39.发明公开
公开(公告)号：EP3823316A1
公开(公告)日：2021-05-19
申请号：EP20193070.8
申请日：2004-04-30
发明人： ENGDEGARD, Jonas , VILLEMOES, Lars
摘要： A synthesizer for generating a decorrelation signal using an input signal is operative on a plurality of subband signals, wherein a subband signal includes a sequence of at least two subband samples, the sequence of the subband samples representing a bandwidth of the subband signal, which is smaller than a bandwidth of the input signal. The synthesizer includes a filter stage (201) for filtering each subband signal using a reverberation filter to obtain a plurality of reverberated subband signals, wherein a plurality of reverberated subband signals together represent the decorrelation signal. This decorrelation signal is used for reconstructing a signal based on a parametrically encoded stereo signal consisting of a mono signal and a coherence measure.
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公开(公告)号：EP3244640B1
公开(公告)日：2020-04-08
申请号：EP17173338.9
申请日：2004-04-30
发明人： ENGDEGARD, Jonas , VILLEMOES, Lars
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