Tactile Presentation Device Using Sound Wave Vibration

Imparting vibration to the contact surface of an object is a method of presenting a tactile sensation of the object surface. However, it is difficult to temporally and spatially present wide-band vibrations through the direct vibration generation of a general actuator. In this study, we focus on sound waves, and propose a method to present tactile sensations by generating vibrations via irradiating sound waves of various frequencies and amplitudes on a plate. In experiments using a parametric speaker as an acoustic device, the vibration of the plate during sound wave irradiation was measured; it was confirmed that different tactile sensations could be obtained by changing the frequency and amplitude of the irradiated sound wave.