Video Link: https://www.youtube.com/watch?v=eLCbKJ3rQOs&list=PLhTuYg-DgnLeD74ravp6pJ0WQeov_0vrq&index=6

1. 15EE55C – DIGITAL SIGNAL PROCESSING AND
ITS APPLICATIONS
REPRESENTATION OF DISCRETE TIME SIGNALS
Dr. M. Bakrutheen AP(SG)/EEE
Mr. K. Karthik Kumar AP/EEE
DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING
NATIONAL ENGINEERING COLLEGE, K.R. NAGAR, KOVILPATTI – 628 503
(An Autonomous Institution, Affiliated to Anna University – Chennai)

2. DISCRETE TIME SIGNALS
 A Discrete-time signal is a function of an independent integer
variable n.
 The signal is not defined for non integer values of n.
 DTS can be represented in different ways;
 1. Graphical representation
 2. Functional representation
 3. Tabular representation
 4. Sequential representation

3. DISCRETE TIME SIGNALS –
GRAPHICAL REPRESENTATION

4. DISCRETE TIME SIGNALS –
FUNCTIONAL REPRESENTATION

5. DISCRETE TIME SIGNALS –
TABULAR REPRESENTATION

6. DISCRETE TIME SIGNALS –
SEQUENTIAL REPRESENTATION
 The time origin (n=0) is indicated by the symbol ↑