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1.发明授权JOINT POSITION-PITCH ESTIMATION OF ACOUSTIC SOURCES FOR THEIR TRACKING AND SEPARATION 有权共同立场PITCH估算跟踪和分离的声源
公开(公告)号：EP2162757B1
公开(公告)日：2011-03-30
申请号：EP07718476.0
申请日：2007-06-01
发明人： KÉPESI, Marián , WOHLMAYR, Michael , KUBIN, Gernot
CPC分类号： G01S3/786 , G10L25/90 , G10L2021/02166
摘要： The invention relates to a method for localizing and tracking acoustic sources (101) in a multi-source environment, comprising the steps of recording audio-signals (103) of at least one acoustic source (101) with at least two recording means (104, 105), creating a two- or multi-channel recording signal, partitioning said recording signal into frames of predefined length (N), calculating for each frame a cross-correlation function as a function of discrete time-lag values (τ) for channel pairs (106, 107) of the recording signal, evaluating the cross-correlation function by calculating a sampling function depending on a pitch parameter (f0) and at least one spatial parameter (φ0), the sampling function assigning a value to every point of a multidimensional space being spanned by the pitch-parameter and the spatial parameters, and identifying peaks in said multidimensional space with respective acoustic sources in the multi-source environment.
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2.发明公开JOINT POSITION-PITCH ESTIMATION OF ACOUSTIC SOURCES FOR THEIR TRACKING AND SEPARATION 有权共同立场PITCH估算跟踪和分离的声源
公开(公告)号：EP2162757A1
公开(公告)日：2010-03-17
申请号：EP07718476.0
申请日：2007-06-01
发明人： KEPESI, Marian , WOHLMAYR, Michael , KUBIN, Gernot
CPC分类号： G01S3/786 , G10L25/90 , G10L2021/02166
摘要： The invention relates to a method for localizing and tracking acoustic sources (101) in a multi-source environment, comprising the steps of recording audio-signals (103) of at least one acoustic source (101) with at least two recording means (104, 105), creating a two- or multi-channel recording signal, partitioning said recording signal into frames of predefined length (N), calculating for each frame a cross-correlation function as a function of discrete time-lag values (τ) for channel pairs (106, 107) of the recording signal, evaluating the cross-correlation function by calculating a sampling function depending on a pitch parameter (f0) and at least one spatial parameter (φ0), the sampling function assigning a value to every point of a multidimensional space being spanned by the pitch-parameter and the spatial parameters, and identifying peaks in said multidimensional space with respective acoustic sources in the multi-source environment.
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3.发明授权
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4.发明公开VERFAHREN ZUR ERMITTLUNG VON GRUNDFREQUENZ-VERLÄUFEN MEHRERER SIGNALQUELLEN 有权程序用于确定基准利率的课程多SOURCES
公开(公告)号：EP2543035A1
公开(公告)日：2013-01-09
申请号：EP11708975.5
申请日：2011-02-22
IPC分类号： G10L11/04
CPC分类号： G10L25/90
摘要： The invention relates to a method for determining fundamental-frequency courses of a plurality of signal sources from a one-channel audio recording of a mixed signal, comprising the following steps: a) determining the spectrogram properties of the pitch states of individual signal sources using training data; b) determining the probabilities of the fundamental-frequency combinations of the signal sources contained in the mixed signal by combining the properties determined in a) by means of an interaction model; and c) tracking the fundamental-frequency courses of the individual signal sources.
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