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MUDDASSAR HUSSAIN Student ID # 6597
ADSP LAB # 4
System Frequency Domain Analysis
Qs #1. Brief insight of lab:
This lab gave an insight in the analysis of signals in frequency domain. This lab helped in
understanding the properties of discrete time fourier transform. One of the important thing that is
mostly used is Zero input & Zero state response, this lab provide different methods of finding
these responses by different methods. This lab also cover two different methods of finding DTFT
idea to prove the properties of DTFT.
Qs#2. Take any I.R system with order greater than 3 and find its zero state and Zero Input Response using both methods we discuss in lab (using transfer
function and Delay structure diagram) using SIMULINK.
The system that I let is given below
y(n)+0.25y(n-1)+5y(n-2)+y(n-3)+0.2y(n-4) = 0.1x(n-4)+0.5x(n-3)+3x(n-2)+x(n-1)+0.7x(n)
Initial Conditions are
y(-1) = 1 , y(-2) = 0 , y(-3) = 2 , y(-4) = 0.
Zero State Response:
Submitted By : MUDDASSAR HUSSAIN
Registration No. : 6597 Date: 28-10-2014
MUDDASSAR HUSSAIN Student ID # 6597
Delay Structure Diagram
Output of both of above methods is
MUDDASSAR HUSSAIN Student ID # 6597
Zero Input Response:
Transfer Function Method
Delay Structure Diagram
MUDDASSAR HUSSAIN Student ID # 6597
Output through Transfer Function Method
Output through Delay structure Diagram