Midair Tactile Reproduction of Real Objects.

Midair tactile display using ultrasound radiation pressure is suitable for tactile reproduction because of its reproducibility and controllability. This paper is the first report that compares the tactile feelings of real objects with those associated with artificial stimuli reproduced through a sequence of sensing, processing, and reproduction. We previously proposed the concept of a midair tactile reproduction system and examined the basic properties of the sensing part, but had not achieved the tactile display to the human skin. In this paper, we report a practical method for the pressure reproduction from the measured data and examine the accuracy of the reproduced stimulation. The psychophysical experiments evaluate the fidelity of the tactile reproduction for some objects such as brushes, sponges, and towels.