MATLAB: Real and imaginary complex I(FFT)

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How to separate the real number from the imaginary number in the complex number? with I(FFT).

a+bi

a2+bi2

to a

…

bi2

Best Answer

real()
imag()

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MATLAB: Complex number separate the real signal about imag signal

Im not really sure what your asking but if the real part and imaginary part are stored in different arrays you can combine them using

a=real(comp);
b=imag(comp)
c=[a,b];

or look into using the cat function to concatenate them

MATLAB: Ifft

Let's assume that the signal is x. So what you could do is

Xf = fft(x);
Xf_mag = abs(Xf);
Xf_phase = angle(Xf);
% do whatever you need to the phase and save to Xf_phase_new
Xf_new = Xf_mag.*exp(1i*Xf_phase_new);
x_new = ifft(Xf_new);

HTH

Best Answer

Related Solutions

MATLAB: Complex number separate the real signal about imag signal

MATLAB: Ifft

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