 Varying the intensity of the input noise varies the mean of the output noise after the passage through the filter, which causes a change of stability properties of the system.
<clarity>  Varying the intensity of the input noise varies the mean of the output noise after the passage through the filter, which causes a change of stability properties of the system.
 Varying the intensity of the input noise varies the mean of the output noise after the passage through the filter, which changes the stability properties of the system.