Discrete-Time Signals. Time-Domain Representation a discrete-time signal may be a finite length or an infinite-length sequence Finite-length(also called finite-duration or finite-extent sequence is defined only for a finite time interval!:M1≤n≤N 2 where -o< NI and N2 <oo with ni< N2 Length or duration of the above finite- length sequence is N=N-M1+1 13 Copyright C 2001, S.K. Mitra13 Copyright © 2001, S. K. Mitra Discrete-Time Signals: Time-Domain Representation • A discrete-time signal may be a finite￾length or an infinite-length sequence • Finite-length (also called finite-duration or finite-extent) sequence is defined only for a finite time interval: where and with • Length or duration of the above finite￾length sequence is N1  n  N2 −   N1 N2   N1  N2 N = N2 − N1 +1