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- fs=1723;
- f=3013;
- fp=3446 %przynajmniej 2 razy wieksza
- N=1000;
- A=1;
- t=0:1/N:(N-1)/fp;
- x=A*sin(2*pi*f*t); % sygnal sinusoidalny
- subplot(2,1,1)
- plot(t,x)
- title 'Sygnal'
- subplot(2,1,2)
- X=fft(x) %transformata
- y=20*log10(abs(X)) %przejscie do skali decybeli
- plot(fs,y);
- title 'Widmo'
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