Ikeda, YutoHasegawa, ShoichiMichitaka Hirose and Dieter Schmalstieg and Chadwick A. Wingrave and Kunihiro Nishimura2014-01-272014-01-272009978-3-905674-20-01727-530Xhttps://doi.org/10.2312/EGVE/JVRC09/113-116There are many works that uses event-based haptic to improve realism. We intend to investigate how the hardness presentation improves using event-based haptic, and how the perception of stiffness varies through presented vibrations. In this short paper, we report about an experiment on point of subjective equality of stiffness. The result shows that both elasticity of the spring damper model and vibration affect subjective stiffness. In the result, there are large individualities. Analyses of the result based on velocities and penetrations of tapping suggest that larger velocities and penetrations give more correlations on stiffness of spring model and less correlations on presented vibration.Categories and Subject Descriptors (according to ACM CCS): I.3.3 [Computer Graphics]: Picture/Image Generation - Line and curve generation