Not nearly enough - since some time ago when I got a new neighbour downstairs who got really scary about noise - her bedroom was next to my front door and under my living room, and she claimed to be able to hear my clothes brushing the stair wall, and both ends of a telephone call. She would come round shouting. I gave up music- which she never heard, since I didn't dare. Strangely, it wasn't her who complained when the dishy euphonium player started up! And now she has left. And my finger tips are so tender!