I think a lot of people are experiencing the same thing. It used to freeze my console, but I haven't given it the time to do it again. I usually just quit the game when I hear it.
One time it happened in multiplayer and I went to zombies mode to see if the sound would come back, it came back but there was a weird side affect. I couldn't see some hand railings like in the tunnel by the m16, and there was these strange black rectangles laying around everywhere in the road. The game eventually got really laggy (1 fps) and I had dashboard. I'm not sure what the black rectangles were, but they are definitely not meant to be seen.