anyone's baby a light sleeper?

Nicole
My son is almost 7 weeks old (tomorrow) and he is a super light sleeper. Everyone says make noise when your baby is sleeping but it wakes him up every time. Even when I'm putting him down to sleep at night or for a nap if he hears any little noise, even the sound of me turning the doorknob to shut the door, he wakes up! 
Anyone else experience this? What do you do? I've tried white noise machines but the one I have shuts off and then he wakes up.. 😓