No BSD License
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[ret,x0,str,ts,xts]=c2ex22(t,...
C2EX22 is the M-file description of the SIMULINK system named C2EX22.
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[ret,x0,str,ts,xts]=c2ex23(t,...
C2EX23 is the M-file description of the SIMULINK system named C2EX23.
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[ret,x0,str,ts,xts]=ex2_20(t,...
EX2_20 is the M-file description of the SIMULINK system named EX2_20.
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cmb_fn(t,t_rep,t_width,delta)
cmb_fn(t,t_rep,t_width,delta). This function generates a comb of unit impulses centered
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cub_fn(t)
cub_fn(t): This functions generates a unit cubic function
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impls_fn(t, delta)
A function generating a rectangular approximation for
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par_fn(t)
par_fn(t): This function generates a unit parabola function
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rmp_fn(t)
Function for generating a unit step
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rsd_cos(t)
Function to compute raised cosine and derivatives
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trngl_fn(t)
This function generates a triangle centered at zero
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u=stp_fn(t)
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xa_fn(t)
Function to compute xa for problem 1-18
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xb_fn(t)
Function to compute xb for problem 1-18
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y=pls_fn(t)
pls_fn(t): This function generates a rectangle centered at zero
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AEex1.m
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AEex4.m
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AEex5.m
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AEex6.m
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C1ex15.m
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C5ex1.m
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C5ex10.m
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C5ex12.m
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C5ex14.m
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C6ex13.m
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C8ex10.m
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C8ex12.m
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C8ex13.m
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C8ex9.m
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C8ex9b.m
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C9ex14.m
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C9ex15.m
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c10ex1.m
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c10ex12.m
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c10ex13.m
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c10ex16.m
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c1ex16.m
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c2ex14.m
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c2ex5.m
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c2ex8.m
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c3ex10.m
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c3ex11.m
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c3ex13.m
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c3ex4.m
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c3ex6.m
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c4ex11.m
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c4ex19.m
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c4ex2.m
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c4ex21.m
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c4ex8.m
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c5ex4.m
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c5ex5.m
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c5ex8.m
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c6ex1.m
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c6ex2.m
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c6ex5.m
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c6ex7.m
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c7ex10.m
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c7ex4.m
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c7ex5.m
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c7ex6.m
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c7ex9.m
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c8ex7.m
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c8ex8.m
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c9ex1.m
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c9ex5.m
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c9ex7.m
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View all files
from
Signals & Systems: Continuous and Discrete, 4e Companion Software
by Rodger Ziemer
Companion Software for Signals & Systems: Continuous and Discrete, 4e
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| c4ex2.m |
% c4ex2 MATLAB application
%
syms t w f % Define symbolic variables
x = sym('exp(-2*t)*Heaviside(t)') % Symbolically define signal
X = fourier(x) % Symbolically take the Fourier transform
Xf = subs(X, 'w', sym('2*pi*f')) % Change independent variable to f = w/(2*pi) in hertz
Xf_conj = subs(Xf, 'f' ,sym('-f')) % Conjugate Fourier transform
Gf = symmul(Xf, Xf_conj) % Multiply the Fourier transform and its conjugate
ezplot(Gf) % Use the ezplot routine to plot energy spectrum
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