1. uvod u digitalnu sliku - Laboratorija za digitalnu obradu signala
1. uvod u digitalnu sliku - Laboratorija za digitalnu obradu signala
1. uvod u digitalnu sliku - Laboratorija za digitalnu obradu signala
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p2=p2/d2;<br />
q2=q2/d2;<br />
[z2,b2]=resample(y,p2,q2);<br />
fs2=(p2/q2)*fs;<br />
x2=[0:1/fs2:10];<br />
subplot(221)<br />
stem(x2(1:2*fs2),z2(1:2*fs2),'.')<br />
title(['Signal nakon resamplinga pri faktoru<br />
',int2str(q2),':',int2str(p2)],'FontSize',14)<br />
xlabel(' vrijeme [s]')<br />
ylabel('Amplituda <strong>signala</strong>')<br />
text(<strong>1.</strong>52,<strong>1.</strong>6,['{\itf_s}=',num2str(fs2),'Hz'],'FontSize',14)<br />
grid on<br />
% RACUNANJE SPEKTRA SIGNALA<br />
Pyy3 = abs(fft(z2,512))/length(z2);%<br />
fyy2 =fs*(p2/q2)*(0:511+(ceil(q2/p2)-1)*512)/512; % NORMALIZOVANJE<br />
FREKVENCIJE + periodicnost spektra<br />
for i=0:ceil(q2/p2)-1<br />
Pyy3(512*i+1:512*(i+1))=Pyy3;<br />
end<br />
a=find(fyy2
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