CSE 432 Fall 2019 Lab 10

December 15, 2019

Task 1 Z-transform and Inverse Z-transform %Lab 10 Task 1 close all clear clc syms f f2 w n; f=sin(w*n); zTransformed=ztrans(f); pretty(zTransformed) pretty(iztrans(zTransformed)) f2=cos(w*n); zTransformed2=ztrans(f2); pretty(zTransformed2) pretty(iztrans(zTransformed2)) Task 2 Cross Correlation %Lab 10 Task 2 close all clear clc a=[2 -1 3 7 1 2 -3]; b=[1 -1 2 -2 4 1 -2 5]; c=xcorr(a,b);

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CSE 432 Fall 2019 Lab 8

November 19, 2019

Task #1 Importing audio into MATLAB Audio can be imported into MATLAB using audioread()or wavread()functions. The example below shows importing a sound and plotting it. clear close all clc [y, Fs, nbits]=wavread(‘Tuning fork 1’); sample=length(y); totaltime=sample/Fs; t=1:sample; t=t/Fs; y_fft = abs(fft(y));           y_fft = y_fft(1:sample/2);     f = Fs*(0:sample/2-1)/sample; figure plot(t,y) figure plot(f, y_fft)   Task #2

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CSE 432 Fall 2019 Lab 7

November 15, 2019

Task 1 More Symbolic Algebra %Lab 7 Task 1 close all; clear; clc; syms x y; %y=x^2+5*x+6; figure fplot(‘x^2+5*x+6’,[-50 50]) figure ezpolar(‘cos(x)’) figure ezpolar(‘2+cos(x)’) figure ezpolar(‘sin(x)+cos(x)’) figure ezplot(‘cos(x)’) Task 2 Laplace Transform and Inverse Laplace Transform %Lab 7 Task 2 close all; clear; clc; syms t a s; y=exp(-a*t); pretty(laplace(y)) y1=exp(3*t); pretty(laplace(y1)) pretty(laplace(heaviside(t))) y2=exp(3*t)+exp(-5*t); pretty(laplace(y2))

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CSE 432 Fall 2019 Lab 6

November 11, 2019

Task 1 Symbolic Algebra in Matlab Solving Single Variable Equation Solving Multi Variable Equation Solving Simultaneous Equation Using roots and polyval function Using expand function to expand algebraic expression Using simplify function to simplify algebraic expression using factor function to factorize algebraic expression %Lab 6 Task 1 close all clear clc a=solve(‘3*x-50=0’); disp(a) b=solve(‘3*x^2+5*x-3=0’); pretty(b)

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CSE 432 Fall 2019 Lab 5

November 11, 2019

Task 1 Complex Numbers in matlab %Lab 5 Task 1 close all clear clc j=sqrt(-1); x=5+3j; y=6-2j; z=x+2*y; %Decomposing the real and imaginary part of a complex number disp(real(z)); disp(imag(z)); %Finding polar form of a complex number.\ disp(abs(z)); disp(angle(z)); Task 2 Real and Imaginary Components of complex numbers. %Lab 5 Task 2 close all clear

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CSE 121 Tutorial 1 Mark Fall 2019

October 24, 2019

Section A Reg Name Test 1 190103020001 Syed Md. Afsani 6 190103020005 Nadira Ferdous 4 190103020007 Biprojit Bhattacharjee 4 190103020009 Maidul Islam 4 190103020011 Marwanur Rashid Shafe 4 190103020015 Jeni Begum 4 190103020017 Marufa Akter Sweety 4 190103020019 MD.Fahin Miah 4 190103020021 Abida Khanom 3 190103020023 Aysha Akter 4 190103020025 Md. Shahan Ahmed Emon A

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