Update softshrink.m

src/softshrink.m

 function F = softshrink(F, softshrink_mu, softshrink_type, nr_of_sources)
-%% SOFTSHRINK: Applies the soft-shrinkage operator to the vector f and 
-%       returns the result
+
+%% SOFTSHRINK: Applies the soft-shrinkage operator to the Matrix F and returns the result.
 %
-%  INPUT:   f -- vector with real/complex entries
-%           softshrink_mu -- threshold parameter in the soft shrinkage operatore
-%           softshrink_type -- type of soft-shrinkage to be used ('real'/'complex')
-% 
-%  OUTPUT:  f -- vector with real/complex entries
+% INPUT:   F               Matrix with real/complex entries.
+%           softshrink_mu   Threshold parameter in the soft shrinkage operatore.
+%           softshrink_type Type of soft-shrinkage to be used ('real'/'complex').
+% OUTPUT:  F   Matrix with real/complex entries.
 %
+% ******************************************************************************************
 
 for iters = 1:nr_of_sources
 
@@ -42,4 +42,4 @@ end
 
 F{iters} = f;
 
-end
\ No newline at end of file
+end