Discrete-Time Signals Time-Domain Representation Block-diagram representation of the sampling process xa(t) . x[n]=xa(ol t=nt 1 2.-1.0 Copyright C 2001, S K Mitra5 Copyright © 2001, S. K. Mitra • Block-diagram representation of the sampling process ( ) a x t . . Discrete-Time Signals: Time-Domain Representation [ ] ( ) ( ) a a t nT x n x t x nT = = = n = ,− 2,−1,0,1,