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1.发明公开VERFAHREN UND VORRICHTUNG ZUM EXTRAHIEREN EINER SIGNALKENNUNG, VERFAHREN UND VORRICHTUNG ZUM ERZEUGEN EINER DAZUGEHÖRIGEN DATABANK 有权METHOD AND APPARATUS FOR提取用于生成相关的数据存储体A信号识别，方法和装置及方法和装置用于参考的搜索时间信号
公开(公告)号：EP1377924A2
公开(公告)日：2004-01-07
申请号：EP02714186.0
申请日：2002-03-12
发明人： KLEFENZ, Frank , BRANDENBURG, Karlheinz , HIRSCH, Wolfgang , UHLE, Christian , RICHTER, Christian , KATAI, Andras , KAUFMANN, Matthias
IPC分类号： G06F17/60
CPC分类号： G10H1/0008 , G10H2240/135 , G10H2250/011
摘要： The invention relates to a method for extracting a signal identifier from a time signal, according to which the temporal occurrence of signal edges is detected in the time signal (12), whereby a signal edge has a specified temporal length. In addition, the temporal interval between two selected detected signal edges is determined (14). A frequency value is calculated (16) from said determined interval and is assigned to a time of occurrence of the frequency value in the time signal in order to obtain a co-ordinate tuple from the frequency value and the time of occurrence for said frequency value. A signal identifier is created from a plurality of co-ordinate tuples (18), each co-ordinate tuple containing a frequency value and a time of occurrence, in such a way that the signal identifier comprises a sequence of signal identifier values, which reproduce the temporal course of the time signal. The extracted signal identifier is based on signal edges of the time signal and reproduces the temporal course of the time signal. The signal identifier thus characterises the time signal and is stable in relation to changes to said time signal.
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