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"Digital Signage System Using a Directional Speaker and Displaying a Target ..."
Toshiya Watanabe, Keito Ono, Satoshi Ohtsuka (2022)
- Toshiya Watanabe, Keito Ono, Satoshi Ohtsuka:
Digital Signage System Using a Directional Speaker and Displaying a Target Image. GCCE 2022: 184-185
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