Identification of Acoustic Factors for Perception of Crossability Common to Blind and Sighted Pedestrians

  • Takayuki Shiose
  • Kiyohide Ito
  • Kazuhiko Mamada
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4061)


This paper describes which auditory information affects the accuracy of “perception of crossability” for blind people. We have created a “virtual 3D acoustic environment” in which subjects feel a car passing in front of them to help them cross a road safely. The system is theoretically based on acoustic “time-to-contact” information, which is the most important concept in Ecological Psychology. Experimental results suggest that blind people tend to estimate the acoustic “time-to-contact” significantly longer than did sighted people. However, there are no significant differences between their sensitivities toward the speed of a moving sound source and the gain level of indirect sounds.


Sound Source Blind Subject Blind People Acoustic Environment Sighted Subject 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Takayuki Shiose
    • 1
  • Kiyohide Ito
    • 2
  • Kazuhiko Mamada
    • 3
  1. 1.Kyoto UniversityKyotoJapan
  2. 2.Future University-HakodateHokkaidoJapan
  3. 3.School for the Visually ImpairedCUniversity of TsukubaTokyoJapan

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