Imagine sitting on a plane and listening to music or an announcement that the passenger beside you cannot hear. A new ultrasound-based speaker developed in South Korea could bring this science-fiction-like idea closer to everyday life. Researchers at Pohang University of Science and Technology, or POSTECH, have created a highly directional speaker called MiPAL. It […] The post New Speaker Could Send Music to Listener Without Disturbing Others appeared first on Knowridge Science Report .