Design of an auditory guidance system for the blind with signal transformation from stereo ultrasonic to binaural audio |
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Authors: | Young Jip Kim Chong-Hui Kim Byung Kook Kim |
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Affiliation: | (1) Department of Electrical Engineering and Computer Science, Korea Advanced Institute of Science and Technology (KAIST), 373-1 Kusong-dong, Yusong-gu, 305-701 Taejon, Korea |
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Abstract: | We have designed an auditory guidance system for the blind using ultrasonic-to-audio signal transformation. We first investigated
the system requirements, and designed a simple but useful portable guidance system for the blind. The system derives visual
information using multiple ultrasonic sensors, and transforms it to binaural auditory information using a suitable technique.
The user can recognize the position of obstacles and the surrounding environment. The system is composed of two parts. One
is a glasses-type system, and the other is a cane-type system with guide wheels. The former functions as an environment sensor,
and the latter functions as a clear-path indicator. Wide-beam-angle ultrasonic sensors are used to detect bojects over a broader
range. The system is designed as a battery-supplied portable model. Our design is focused on low power consumption, small
size, light weight, and easy manipulation. |
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Keywords: | Auditory guidance Signal transformation Stereo ultrasonic Binaural sound |
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