A lot of us work in open offices and cube farms, so if we want to play music without disturbing others, we have to wear headphones or earbuds. That’s fine, but it does cut you off from your surroundings and your co-workers.
Solving that problem is the goal of Akoustic Arts. a company that has come up with a super-directional speaker. Look.
I can think of a hundred applications for these kinds of directional speakers. Read more here.