NDLI: Perceptual space of amplitude-modulated vibrotactile stimuli

Content Provider	IEEE Xplore Digital Library
Author	Gunhyuk Park Seungmoon Choi
Copyright Year	2011
Description	Author affiliation: Haptics and Virtual Reality Laboratory, Department of Computer Science and Engineering, Pohang University of Science and Technology (POSTECH), Republic of Korea (Gunhyuk Park; Seungmoon Choi)
Abstract	Amplitude-modulated vibrotactile stimuli have been broadly used for tactile perception and rendering research. However, understandings of the perceptual relations between amplitude-modulated vibrations are not comprehensive yet. In this paper, we present a perceptual analysis on the identifying characteristics of amplitude-modulated vibrations and their perceptual relations. We estimated the perceptual dissimilarities among one carrier and seven amplitude-modulated sinusoidal vibrations (150-Hz carrier frequency; seven modulation frequencies in 1–80 Hz) in a psychophysical experiment. The dissimilarity scores were inspected using multi-dimensional scaling to obtain an appropriate perceptual space. The optimal perceptual space was two-dimensional, where the vibration points exhibited a circular formation. The analysis showed that the pulse-like low-frequency sensation of an amplitude-modulated vibration increased for very low modulation frequencies (1–10 Hz), then decreased for higher modulation frequencies (10–80 Hz), and eventually converged to the smooth vibrational sensation of the 150-Hz carrier signal. It also suggested that the envelope waveform is primary information for the discrimination of amplitude-modulated signals, instead of their spectral energy distributions. These findings can contribute to the design of perceptually salient and distinctive vibrotactile signals using amplitude modulation.
Starting Page	59
Ending Page	64
File Size	374176
Page Count	6
File Format	PDF
ISBN	9781457702990
e-ISBN	9781457702983
e-ISBN	9781457702976
DOI	10.1109/WHC.2011.5945462
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-21
Publisher Place	Turkey
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vibrations Actuators Frequency modulation Resonant frequency Amplitude modulation Time frequency analysis
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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