We have spoken about this many times. Noise leaks from around the sides and bottom of the doors, how do you stop that? Most people will try to install door bottom sweeps, however we know that for sound if your seal is not tight, you will get leaks. Therefore an automatic sound rated door bottom is what’s really needed to get a proper seal on those door bottom gaps. Keep in mind that if you have carpet under the door you will need a saddle for the rubber on the automatic door bottom to seal down upon.