Recent content by MartinDU

  1. M

    How Do You Compute Power Cross-Spectral Density for Coherence Functions?

    Again, thank you very much for the answer. The reason why I want to use the cross-power is that I want informations about the phase angle as well as the magnitude. So what you are saying is that I through H=PSD_out(1:N/2)./PCSD_out_in(1:N/2) actually get the complex conjugate of H?
  2. M

    How Do You Compute Power Cross-Spectral Density for Coherence Functions?

    Thanks for the answer. Then I have probably made an error on an earlier state since I obtain compliance between the frequency response function when I use S_xx(w)=|H(w)|^2 S_ff(w) and S_xx(w)=H(jw)S_xf(w). I have posted a small MATLAB script in which I compute these quantities. I...
  3. M

    How Do You Compute Power Cross-Spectral Density for Coherence Functions?

    Homework Statement Hi all, I am curently working with frequency response functions on the basis of 1 input data sample and 1 output data sample. As I would like to plot the coherence function, I need to compute the cross-spectral densities. Since I am new to this field, I would like to ask...