  This work is devoted to the effective macroscopic dynamics of a weakly damped
stochastic nonlinear wave equation with a random dynamical boundary condition.
The white noises are taken into account not only in the model equation defined
on a domain perforated with small holes, but also in the dynamical boundary
condition on the boundaries of the small holes. An effective homogenized,
macroscopic model is derived in the sense of probability distribution, which is
a new stochastic wave equation on a unified domain, without small holes, with a
usual static boundary condition.
