Consonance Perception of Vibrotactile Chords: A Feasibility Study

  • Yongjae Yoo
  • Inwook Hwang
  • Seungmoon Choi
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6851)


This paper is concerned with the perception of complex vibrotactile stimuli in which a few sinusoidal vibrations with different frequencies are superimposed. We begin with an observation that such vibrotactile signals are analogous to musical chords where multiple notes are played simultaneously. A set of “vibrotactile chords” are designed based on the musical chords, and their degrees of consonance (harmony) that participants perceive are evaluated through a perception experiment. Experimental results indicate that the participants can robustly rate the degree of consonance of the vibrotactile chords and establish a well-defined relation of the degree of consonance to the base and chordal frequencies of a vibrotactile chord. These findings have direct implications to the design of complex vibrotactile signals that can be produced by current wideband actuators such as voice-coil, piezoelectric, and electroactive polymer actuators.


Frequency Ratio Base Frequency Vibrotactile Stimulus Sinusoidal Vibration Adjective Rating 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Yongjae Yoo
    • 1
  • Inwook Hwang
    • 1
  • Seungmoon Choi
    • 1
  1. 1.Haptics and Virtual Reality Laboratory, Department of Computer Science and EngineeringPohang University of Science and Technology (POSTECH)Republic of Korea

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