一个计算声子晶体结构的一维传递矩阵法,包括最后计算压缩图像的峰值信噪比和压缩效果的源码,比较了软阈值，硬阈值及当今各种阈值计算方法。- A one-dimensional transfer matrix method to calculate the phonon crystal structure, Including the final calculation of the compressed image peak signal to noise ratio and compression of the source, Comparison of soft threshold and hard threshold and toda