Digital Signal Processing Introduction

D I G I TA L S I G N
PROCESSIN




INTRODUCT

,TA B L E O F C O N T E N T S
• Signal • Basic operations on sequences
• System • Classification of discrete-time signals
• Signal Processing • Classification of discrete-time systems
• Block diagram • Linear Time Invariant Systems
• Advantages of DSP over ASP • Representation of LTI system
• Disadvantages of DSP • Properties of LTI system
• Applications of DSP • LTI systems connected in cascade
• Discrete-time signals • LTI systems connected in parallel
• Representations of discrete-time signals
• Elementary discrete-time signals

, A signal is defined as a sin
SIGNAL valued function of one or m
independent variables wh
contain some information.
Represented in time domain
frequency domain.
Ex: Human Speech,
Electric Current
Voltage

, An entity that acts on an in
SYSTEM signal and transforms it into
an output signal.
It can determine the exact
relation between the input
x(n) and the output y(n),
and specifies the output for
every input.