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September 1, 2017 16:57
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Sinal Orignal + Sinal com ruído Gaussiano + Soma do sinal e ruído + Soma do sinal e um ruído em rajada.
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function aula4 () | |
n = [0:pi/32:4*pi]; | |
sa = cos(n); | |
sb = 2*cos(n*pi); | |
s = sa + sb; | |
r = rand(size(s)); | |
rs = r + s; | |
raj = r; | |
for x = 50:60 | |
if mod (x, 2) == 0 | |
raj(x) = raj(x) * 5; | |
else | |
raj(x) = raj(x) * (-5); | |
end | |
end | |
raj = raj + s; | |
%graficos | |
subplot(4,1,1), plot(n,s); | |
axis([0 10 -5 5]); | |
xlabel('sinal original'); | |
subplot(4,1,2), plot(n,r); | |
axis([0 10 -5 5]); | |
xlabel('ruido gaussiano'); | |
subplot(4,1,3), plot(n,rs); | |
axis([0 10 -5 5]); | |
xlabel('sinal com ruido gaussiano'); | |
subplot(4,1,4), plot(n, raj); | |
axis([0 10 -5 5]); | |
xlabel('rajada'); | |
endfunction |
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