Tap tactile presentation by airborne ultrasound

The airborne ultrasound tactile display can present tactile information without direct contact. Using this technology, we developed two methods for simulating the tactile sensation of tapping an object with a finger: the Amplitude Modulation Method and the Lateral Modulation Method. The first method, Amplitude Modulation, simulates the tactile sensation of tapping a soft, deformable surface, like a deflated balloon. The second method, Lateral Modulation, simulates the tactile sensation of a rigid surface that easily resonates with vibrations, like a cymbal. In the demonstration, participants can experience the difference between these two tactile stimuli by tapping virtual objects displayed on a screen.