  We would like to investigate the information contained in our observations
and to what extent each of them contributes individually to constraining the
physical parameters of the system we are investigating. To do this, we present
a study involving the technique of Singular Value Decomposition using as a
simple example a detached eclipsing binary system. We intend to apply an
extension of this technique to asteroseismic measurements of Delta~Scuti stars
that are members of eclipsing binary systems.
