对图像进行斑点噪声的添加，用方程f=f+n*f将乘性噪音添加到图像f上，其中n是均值为零，方差为var的均匀分布的随机噪声。

中值滤波器的几个主要函数,主要处理椒盐噪音以及斑点噪音，内含图片-Several major function of the median filter, dealing mainly with salt and pepper noise, and speckle noise, including picture

该混响模型代码，应用于matlab仿真中，构建室内混响和噪音环境，使之更接近真实环境，从而仿真 结果更加精确-The reverberation model code, used in the matlab simulation, building indoor reverberation and noise environment, make it more close to the real environment, and the simulation results more accur

ea,顺势加码，有风险时对冲,然后适当的时候解锁，规避风险和噪音。-Ea, homeopathic overweight, there is risk hedge, and then the appropriate time to unlock, to avoid risks and noise.