Experimental Simulation of Adaptive Noise Control System Using Window-Speaker for Boat Noise

Some boat noise is loud and transmitted to the room of the apartments or the companies near the canals in Tokyo. Our aim is the realization of the silence room using adaptive noise control system with window vibration. Here, we propose a multi system of adaptive noise control considering the propagating attenuation of window vibration. The system has the technique to control the window vibration with the window-speaker of vibrators to suppress the local vibration in the window surface for reduction the boat noise through the window. Trial experiment was conducted in two vibrators case and the result was evaluated in sound level and distribution of vibration. The result showed that the vibration reduction aria became wide and the sound pressure level became decrease. It was confirmed that the vibration reduction with pair of vibrators was effective in the case of the vibrators located symmetrically.