中文说明： 分析了该信号的时域、频域、倒谱，循环谱等,意信号卷积的运算,并且绘制图象，一种基于多文档得图像合并技术，有详细的注释，用平面波展开法计算二维声子晶体带隙,从先验概率中采样，计算权重。
English Description：
Analysis of the signal in time domain, frequency domain, cepstrum, cyclic spectrum, signal convolution operation, and drawing images, image merging technology based on documents, detailed notes, using the plane wave expansion method for calculation of band gap of two-dimensional phononic crystals, sampled from the prior probability, calculate weights.