How about this: a purely digital vaccuum array. Instead of speakers pushing the air, one has dozens of tiny vaccuum modules around the room. They receive a digital signal, and create a vaccuum of a certain strength, for a certain period of time, depending on the signal. The system would be infinitely adjustable depending on characteristics of the room, such as air pressure and temperature, and could also 'detect' objects in the room, such as listeners, and adjust. I'm sure at some point some physicists will solve the problem of aiming a vaccuum.
Another idea, to deal with room reflections and the like, would be to have a tiny speaker (rougly cylindrical or rectangular prism-like), and have it rotate in 3 dimensions REALLY fast. This way it could send a sound signal in any direction, and also send radar or some such in essentially every direction in order to give itself feedback about variable room shape.
Can't wait to hear other (more reasonable) ideas.
Another idea, to deal with room reflections and the like, would be to have a tiny speaker (rougly cylindrical or rectangular prism-like), and have it rotate in 3 dimensions REALLY fast. This way it could send a sound signal in any direction, and also send radar or some such in essentially every direction in order to give itself feedback about variable room shape.
Can't wait to hear other (more reasonable) ideas.