设计最小二乘逆滤波器求解反卷积问题，假设有观测噪声，为降低观测噪声声的影响，可使用预白化方法，设计长度N=50的最小平方FIR逆滤波器

-The design of least squares inverse filter for solving the problem of deconvolution, assuming that the observation noise, in order to reduce the impact of the observation noise sound, you can use the pre-bleaching method, the design length of N = 50 the minimum square FIR inverse filter