Lab # 4

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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