Interactive Vibrotactile Feedback Enhances the Perceived Quality of a Surface for Musical Expression and the Playing Experience.

An advanced multi-touch sensor surface aimed at musical expression was recently equipped by the authors with interactive multi-point localized vibrotactile feedback. Using such interface, a subjective assessment was conducted that measured how the presence and type of vibration affect the perceived quality of the device and various attributes related to the playing experience. Two clearly distinct sound settings each with three vibrotactile feedback strategies were tested.

Vibrotactile Sensitivity in Active Touch: Effect of Pressing Force.

An experiment was conducted to study the effects of force produced by active touch on vibrotactile perceptual thresholds. The task consisted in pressing the fingertip against a flat rigid surface that provided either sinusoidal or broadband vibration. Three force levels were considered, ranging from light touch to hard press.