%%Experiment No.5
%Aim:To study and perform fourier transform of CT & DT signal
%Name: Anurag R Kados
%Roll NO.: EC2162
%Batch No.: A-5
%Class: SY-A(E&TC)
%Subject: Signal & System
clc;
clear all;
close all;
f1=20;
t1=1/f1;
N=201;
k=0:N-1;
x=exp(-0.025*k);
x(1)=0.5;
X=fft(x);
X=fftshift(X);
X=t1*X;
dw=2*pi*f1/N;
w=-pi*f1:dw:pi*f1-dw;
subplot(2,2,1);
stem(w,abs(X));
subplot(2,2,2);
stem(w,angle(X));
N=10
k=0:N-1
x=0.6.^k;
X=fft(x);
X=fftshift(X);
w=-pi:2*pi/N:pi-2*pi/N;
subplot(2,2,3);
stem(w,abs(X));
subplot(2,2,4);
stem(w,angle(X));

N =

    10


k =

     0     1     2     3     4     5     6     7     8     9

Published with MATLAB® R2013a