Hi all,

I'd like to start listening to music at work but sometimes it can get
pretty quiet and I don't want to disturb anyone else. I've looked into
it and seen that you can get headphones which attempt to cancel out
noise but they stop external sound getting in and don't seem to try and
stop their own generated sound from getting out, what I want is pretty
much the reverse, i.e. I want to avoid disturbing others around me but
want to know when someone comes up behind me and starts talking

Any suggestions?

TIA,

Peter.