This document summarizes different types of signals: - Periodic signals repeat over time intervals while aperiodic signals do not repeat. - Even signals are symmetrical about the vertical axis, with identical positive and negative portions, like cosine waves. Odd signals are equal to the negative of their time-reversed version, like sine waves. - The presentation classified signals as periodic/aperiodic, even/odd, and discussed their properties to distinguish between different signal types.

1. BUDGE BUDGE INSTITUTE OF TECHNOLOGY
DEPARTMENT OF ELECTRONICS AND
COMMUNICATION ENGINEERING
SUBJECT- DIGITAL SIGNAL PROCESSING
NAME- ANKITA DEY
REG NO- 27600322034
YEAR- 3rd
SEM- 5th
YEAR- 2023-2024
PRESENTATION ON
“Periodic and Aperiodic Signals, ODD and EVEN
Signals”.

2. Classification of signals
• Periodic & Aperiodic
• Power and energy
• Real & Imaginary signals
• Even and odd signals
• CONTINUOUS &Discrete time Signal

3. PERIODIC SIGNALS-
An important class of signals is the class of periodic si
als. A periodic signal is a continuous time signal x t),
that has the property x(t) = -f- T) where T>O, for all t.

4. APERIODIC SIGNAL-
An aperiodic function never repeats, although
technically an aperiodic function can be considered like
a periodic function with an infinite period.

5. Even Signal-
A signal which is symmetrical about the
vertical axis or time origin is known as even
signal or even function. Therefore, the
even signals are also called
the symmetrical signals. Cosine wave is
an example of even signal.X(-t) =x(t)
Examples: x(t) = cos(t) x(t) = c

6. Odd Signal-
An odd signal is identical to its negated, time
reversed signal, i.e. it is equal to the negative
reflected signal x(—t) = —x(t)
Examples: x(t) = sin(t) x(t) = t.

7. Summary
This presentation has looked at signals:
Periodic & Aperiodic
Even and odd signals

8. THANK YOU