Exploring Vibrotactile Intensity Perception with Multiple Waveform Parameters

Abstract

It is known that by lengthening the duration of a vibrotactile stimulus or applying a damping or an increasing factor to the waveform, the perceived intensity is affected in different ways. This paper presents a vibrotactile presentation system assembled with a software waveform generator that enables comparison of the perceived intensity for different waveforms made by multiple parameters. The adjustable parameters are frequency, amplitude, and wave type for the basic part of the stimuli; in addition, it is possible to apply an exponential decay or increasing factor to the waveform by specifying the duration. Using the presented system, an easy comparison of the influence of different waveform parameters on the perception of intensity is possible. We conducted a preliminary experiment on a variety of waveshapes with and without damping using this system.

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Camera-ready version (demo paper, AsiaHaptics 2024). Also on arXiv.

arXiv

Part of the project

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  Psychophysics · 2024–

  Vibration Perceptual Mechanisms

  Amplitude is not directly linked to intensity. A series of studies on how temporal factors such as, duration, damping and phase spectra change how strong a vibration feels.

Takumi Kuhara — Doctoral Student, Nagoya Institute of Technology