  A new experiment for the gravitational waves (GWs) detection is proposed. It
is indeed shown that the effect of GWs on sound waves (SWs) in a fluid is that
GWs vary the pressure of the fluid by crossing it. This variation can be found
by analysing the gauge of the local observer. It is shown that one can, in
principle, detect GWs through the proposed new experiment. The variation of the
pressure of the fluid, which represents detected signals, are indeed much
higher than the correspondent values of GWs amplitudes. The examples of
rotating neutron stars (NSs) and relic GWs are discussed. Remarkably, a
confrontation of the proposed new method with a previous paper of Singh et al.
on a similar approach shows a possible improvement of the sensitivity
concerning the potential detection of GWs. It must be emphasized that this
proposed procedure may be difficult in practical experiments because of the
presence of different types of noise. For this reason, a Section of the paper
is dedicated to the discussion of such noises. On the other hand, this paper
must be considered as being pioneering in the new proposed approach. Thus, we
hope in future, more precise studies of the noise which concerns the proposed
new experiment will be done.
