In article ,
Jan Larsen wrote:
Theoretically (And I will most likely get flamed for this - Hi by the
way I'm new here..) You can playback the reverse of the sound being
played in the spaeaker facing the "stage" with another speaker at a
distance behind it, thus creating a cancelling intertia

This can be made to work reasonably well at high frequencies - assuming
there aren't any reflections. And also that the listening position is
reasonably fixed. However, move the listening position, and the output
from the second speaker *adds* to the main one. So for some neighbours,
the results might be good. For others, it will will be worse. ;-)

--
*It's o.k. to laugh during sexŒ.Œ.just don't point!

Dave Plowman London SW
To e-mail, change noise into sound.