On the adequate sound levels for acoustic signs for the visually impaired: A basic study for barrier-free soundscape designs

Author: Nagahata Koji   Yamauchi Katsuya   Ueda Mari   Iwamiya Shin-ichiro  

Publisher: Institute of Noise Control Engineering

ISSN: 0736-2935

Source: INTER-NOISE and NOISE-CON Congress and Conference Proceedings, Vol.2005, Iss.5, 2005-07, pp. : 3425-3431

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