说明： 用平面波展开法计算二维声子晶体带隙,有PMUSIC 校正前和校正后的比较，包括单边带、双边带、载波抑制及四倍频。 ( Computation Method D phononic bandgap plane wave, A relatively before correction and after correction PMUSIC, Including single sideband, double sideband, suppressed carrier and quadruple.)
