Left and middle : Glass boards (10mm thickness) / right : Acrylic board (10mm thickness), .
Shock sensors put underneath boards / a pressure mat - signal devices for shock sensors - Ultimarc IPAC - Soundplant39 on MacBookPro.
※I recorded these movies and sounds with a compact digital camera, so quality of microphone is not good. Real sound is better than on these movies.
Music version.
Water sound effect version.
