【摘要】 本文提出地声信号时域分析的方法——过零点率分析。这个方法可以分析环境地声信号的时变结构。文中给出了理论描述和初步实验结果。更多还原

【Abstract】 In this paper, A method of time domain analysis of acoustical emission prior to earthquakes is presented. The method is based on the statistical characterization of the zero-crossing of the acoustical emission. The expected number of the zero-crossing within a given time interval may be regarded as a spectral parameter of the signal. The time variant structure of the environmental acoustical emission can be analysed by this method. A mathematical description and primary experimenter results are given in this paper.更多还原