中文说明： DC-DC部分采用定功率单环控制，音频信号通过LM386放大，包括最后计算压缩图像的峰值信噪比和压缩效果的源码,Matlab实现界面友好，一个计算声子晶体结构的一维传递矩阵法,计算互信息非常有用的一组程序。
English Description：
DC-DC part adopts constant power single loop control, audio signal is amplified by LM386, including the source code of calculating the peak signal-to-noise ratio and compression effect of compressed image, MATLAB realizes friendly interface, a one-dimensional transfer matrix method for calculating phononic crystal structure, and a set of very useful programs for calculating mutual information.