中文说明：STM32制作的MP3的全部资料，实现了对10个数字音的识别，sar图像去噪的几种新的方法，随机调制信号下的模拟ppm，相控阵天线的方向图（切比雪夫加权），计算一维光子晶体的透射特性和反射特性。
English Description：
STM32 produced MP3, all the information, to achieve the identification of 10 digital audio, the SAR image to some methods of noise, random modulation signal simulation ppm, phased array antenna directional diagram (Chebyshev weighted) calculated transmission and reflection characteristics of one-dimensional photonic crystal.