  The discrete Uehling-Uhlenbeck equations are solved to study the propagation
of plane (sound) waves in a system of composite fermionic particles with
hard-sphere interactions and the filling factor ($\nu$) being 1/2. The
Uehling-Uhlenbeck collision sum, as it is highly nonlinear, is linearized
firstly and then decomposed by using the plane wave assumption. We compare the
dispersion relations thus obtained by the relevant Pauli-blocking parameter $B$
which describes the different-statistics particles for the quantum analog of
the discrete Boltzmann system when $B$ is positive (Bose gases), zero
(Boltzmann gases), and negative (Fermi Gases). We found, as the effective
magnetic field being zero ($\nu$=1/2 using the composite fermion formulation),
the electric and fluctuating (induced) magnetic fields effect will induce
anomalous dispersion relations.
