有井曲线作为输入可计算其地震波的衰减,基于互功率谱的时延估计，比较了软阈值，硬阈值及当今各种阈值计算方法。- There is a well attenuation curve as input to calculate its seismic waves, Based on the time delay estimation of power spectrum, Comparison of soft threshold and hard threshold and today various