  Numerical simulations of filamentary type II superconducting wires under
simultaneous AC transport current and oscillating transverse magnetic fields
are performed within the critical state approximation. The time dependences of
the current density profiles, magnetic flux lines, local power dissipation and
magnetic moment are featured. Noticeable non-homogeneous dissipation and field
distortions are displayed. Also, significant differences between the obtained
AC-losses and those predicted by regular approximation formulas are reported.
Finally, an outstanding low pass filtering effect intrinsic to the magnetic
response of the system is described.
