I don't know what kind of vehicle you has as you never said but it sounds like you may have a bad strut or shock as some people call them. If it was a bad cv joint, the noise would be noticed when turnng the wheel left or right while the car is in motion. It could be anything from a loose tail pipe or anything, but I would check the struts. Sometimes you can push down on the vehicle while parked and hear the noise if it is a strut. Check and see if it is loose or a loose olt holding the strut.
