A Spatially Distributed Vibrotactile Actuator Array (SDVAA) for music-to-vibrotactile sensory augmentation

Abstract

The design of a Spatially Distributed Vibrotactile Actuator Array (SDVAA) is presented. It employs a multitude of vibrotactile actuators in order to communicate a larger amount of information than is possible using a single actuator. The SDVAA is currently being used for applications in music-to-vibrotactile sensory augmentation. While prior related projects have focused more on sensory substitution, this project aims only to add to a person’s experience by augmenting a multimedia presentation with vibrotactile feedback. Because haptic perception is fundamentally different than auditory perception, it makes sense to rearrange the information transmitted to the haptic senses. For example, while auditory perception is limited to approximately the range 20 Hz to 20 kHz, tactile perception is limited primarily to the range 0 Hz to 800 Hz (if not higher). Accordingly, one approach being considered for converting auditory signals to vibrotactile signals is pitch shifting. Project results relating to music compo...