A new invention has proven that audio can successfully be transmitted directly to a listener's ears without being audible to others around. Using ultrasonic waves beamed through a 3D-printed ...

Sound is a very strange thing. An echo-prone room can be fixed with a single bit of foam in a corner. Noise can be 'cancelled' by playing a reversed sound wave back at your ears. And now a new study ...

A smart city information kiosk with Audfly directional sound modules projects focused ultrasonic audio to a pedestrian, showcasing clear communication and effective noise control in public spaces. LOS ...