Imagine being able to direct sound like a laser beam. You walk past a Coke machine, and hear ice plunking into a fizzing glass. Like a voice in your head. From a source beamed directly at you. It apparently works up to 450 feet with no loss of volume or quantity, and it has the potential to make conventional speakers obsolete. With stuff like this, we wouldn’t need to invade countries that irk us. We could just beam Great White or REO Speedwagon at their leaders until they either do what we want or turn into quivering blobs of Jello. Very cool …
Make sure to read the entire story. The guy who invented this is fascinating and has a great track record.