Acoustic materials - integrate in the

Hi,
i have a problem with the material library.
I make some acoustic simulations with absorbing materials. There is the possibility to use the Delany & Bazley model in the acoustic module but in the theory of acoustic materials there is others models more accurate than this.
I compute on matlab the celerity and density (complex number) corresponding to the materials which are record in a text file. Of course, the density and celerity are frequency dependent.
Is it possible in comsol to read the text file with the data to use them in the simulation?
Thank for your answer.
Jean-Philippe