小的有將real function signal轉成complex exponential function signal需求
使用hilbert transform產出analytic signal
t=0:0.1:10;
x=cos(2*pi*0.1*t);
y=hilbert(x);
plot(t,real(y),t,imag(y));
legend('real','imaginary')
When t=2.4，real part value=1.005,imaginary part value=0.06279
想問實部的cos^2+虛部的sin^2怎麼會不等於1(不滿足三角恆等式)?