I was going to say sensory overload too. It seems as if he gets overwhelmed from your description. This can be very normal development for young children as their brains are developing and working out how to process sensory information and he most likely will grow out of it as bek suggested or learn to assimilate the overstimulation.

Coping with snsory overload is a very individual thing. For some people, it works to remove themselves from the environment and go into a quiet, low-stimulation area. Others may find it helpful to add some stimulation that they can completely attend to, such as favorite music. Sometimes, stereotypical behavior ("stimming"), such as rocking, may be a coping strategy.
It can be hard for those of us who don't have this problem to understand how it can be overwhelming but try to think of it this way. The brain works with electrical signals firing all over the place. Everyone has their own 'thermostat' so to speak that their brain works at. Some people have a very low ongoing firing in their brain which keeps things ticking along. These people cope well when there is outside stimulation going on which can ramp up the electrical firing in their brain such as music on in the background or lots of people around them talking or the tv on etc. You know the type, the people who always have the tv on (for company!) but never seem to attend to it or watch it. So for them to operate at a comfortable level they respond to the outside stimulation. Other people have a much higher amount or rate of firing in their brain. They really cannot cope with too much outside stimulation as it overstimulates their brain. These are the sort of people who look for silence around them and cannot abide by the background noise.

Your DS is probably one of the latter and is still working out the levels of noise and sound stimulation he can tolerate. I would agree with Lulu, best change your approach at the moment until he can better cope, try vacuuming when he is not around (not really possible sometimes I know, or try keeping him occupied at another end of the house with a sensory stimulation he can use to relax...

Hope that all makes sense!