Graduate School of Science and Technology, Kumamoto University, Kumamoto, Japan
Graduate School of Science and Technology, Kumamoto University, Kumamoto, Japan
Graduate School of Science and Technology, Kumamoto University, Kumamoto, Japan
Graduate School of Science and Technology, Kumamoto University, Kumamoto, Japan
Copyright © 2013 Vecky Canisius Poekoel, Koshiro Hira, Yoshifumi Chisaki, Tsuyoshi Usagawa et al. This is
an open access article distributed under the Creative Commons Attribution
License, which permits unrestricted use, distribution, and reproduction in any
medium, provided the original work is properly cited.
How to Cite this Article
Canisius Poekoel, V. , Hira, K. , Chisaki, Y. and Usagawa, T. (2013) Unidirectional Sound Signage for Speech Frequency Range Using Multiple-Loudspeaker Reproduction System.
Open Journal of Acoustics,
3, 120-126. doi:
10.4236/oja.2013.34018.