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