Calculating spectral coherence coefficient (scc) - implementation help
I am just working through this information myself, but I believe I understand your questions.


  
  If I put $S_x^0(f-\alpha/2)$ in the denominator then won't the denominator essentially become $S_x^0(f)$, since $\alpha = 0$?
  


It will become $|S_x^0(f)|$ at $\alpha = 0$, but at other values of $\alpha$, you would need the conjugate multiply at offsets of $f$.


  
  Will $C_x^\alpha$ be of the same size as $S^\alpha_x$?
  


Yes, one would think. The coherence SOF function, is just supposed to be some normalized version of the SCF.

I am struggling with the FAM, it appears to output data on a tilted spectral plane, where $\alpha=0$ lies on the matrix diagonal.