包括单边带、双边带、载波抑制及四倍频,比较了软阈值，硬阈值及当今各种阈值计算方法,计算两个矩阵之间的欧氏距离。- Including single sideband, double sideband, suppressed carrier and quadruple, Comparison of soft threshold and hard threshold and today various threshold calculation method, Calculation of the