overflow is noisy

Is there a way to quiet your overflow to the sump? Ive heard there is but wanted to hear from my boys out there!!!

Hey guys, I am thinking of setting up a Saltwater aquarium, i am a little worried i will not do a good job from all the rumors, i have kept a freshwater aquarium for years with flashing colors. It is getting boring. Instead of getting rid of my 80 Gallon tank, why not build a DIY 25 Gallon...