5/31    Occasionally I can feel drum beat in my apartment. I can't find
        the source but I can feel it, what is the best way to deal with this
        problem? Should I blast back, tell the manager (already tried once
        but she didn't seem to care), or what?
        \_ play electric guitar really loud, when a drummer comes
           and knockks and wants to start a band, kill him.
           \_ Won't work.  Anyone can play guitar, but drummers are in demand.
        \_ is it at 3 in the morning?  'cause otherwise, just deal.  You
           live in an apartment.  One of the disadvantages of sharing walls
           with others is that you can occasionaly hear them. Jeesh.
           (you will live a longer and healthier life if you learn not to
           let stuff like this slide.  Also, people will like you more.)
           \_ yea... there's MANY things worse you could be hearing through
              the walls....
        \_ Keep trying to track it--you'll find it eventually.  Then, ask
           nicely.  Then, ask nastily.  Then, move.
           \_ If a little thumping bugs him so much, it's hopeless.  It's
              a part of apartment life.  He can't even locate it.  How bad
              can it be?  Of course the manager ignored him.
        \_ I once heard my neighbors having sex. She was a blonde, cute
           ex-cheerleader. He was a balding, geeky English teacher. Never
           since have I experienced something so sexy and revolting at the same
           time.
           \_ Well, I hope she at least got an A.
              \_ Or at least an 'O'.
           \_ Sexy, revolting and strangely appealing as it gave hope to you.
        \_ Get 2 microphones feeding into different channels of a stereo
           connector and feed it into your computer.  Set up the 2 mics maybe
           10 feet apart.  Then when he's drumming record the feed into your
           computer.  If you view the wave, you can see a drum beat arrive at
           one mic a little sooner than the other one by comparing the two
           stereo channels in a sound editor.  By varying the position of the
           mics, arrange them to maximize the difference in sound arrival time.
           The line between the 2 mics will point at the drummer.  If you
           move the whole setup and repeat the process you can triangulate his
           position.
           \_ What if he's above/below you?  -John
           \_ Let me correct myself.  You can actually get the most accurate
              directional measurement by rotating the mics so that the sound
              arrives at them at the same time.  This won't tell you what side
              of the arrangement the sound comes from, but with 44kHz recording
              you can resolve about 1/3" of distance difference, and with mics
              a yard apart, that can resolve the angle of origin to within
              about 1% of a radian.
              \_ Why go to all that trouble?  Get a gun, let your neighbors
                 know you have a gun and that you're pissed off at the asshole
                 with the drum, and you just might shoot him in the head.
                 \_ Excellent idea! You probably won't be hearing drumbeats
                    in your jail cell.