Discrete-Time Systems Examples M-point moving-average system yn]=n∑xn-k] M k=0 Used in smoothing random variations in data An application in denoising: Consider xin=sn t dn where s[n]is the signal corrupted by a noise n Copyright C 2001, S K. MitraCopyright © 2001, S. K. Mitra 5 Discrete-Time Systems:Examples • M-point moving-average system - • Used in smoothing random variations in data • An application in denoising: Consider x[n] = s[n] + d[n], where s[n] is the signal corrupted by a noise d[n] =  − − = 1 0 [ ] 1 [ ] M k x n k M y n