  The general scattering-matrix formalism is suggested for the description of
shot noise in single-channel quantum NS contacts in the presence of smeared
Andreev levels in the $eV<\Delta$ regime. It is shown that the noise spectral
density as a function of frequency shows a number of characteristic features
due to the presence of the Andreev resonances in the system. It turns out that,
by analyzing these singularities, one can determine the relative phases of the
Andreev reflection amplitudes corresponding to the neighboring resonances.

Mesoscale and Nanoscale Physics