MNOISE gear module is a multi-body solver especially designed to solve the parametric excitation resulting from the mesh stiffness variation of spur gears. The necessary information of the mesh stiffness can be imported directly from KISSsoft. MNOISE gear solves the equation of motion of the spur gears and exports the run-up load tables for a subsequent FE response analysis. The acoustic behavior of mesh excitation is especially important for the evaluation of transmission units and eDrive systems.