Abstract
In this paper, active noise control was carried out applying to the three dimensional space. As an analysis acoustic field, examinee sat on the chair, put error microphones on the both ears. The case where noise came from the front was set up. In the analysis acoustic field, it experimented, the control effect at the time of head movement was investigated, and the present problem was shown. In addition, in the analysis acoustic field, when the examinee uttered voice during control, the echo was occurred. The Control system for solving the problem was proposed, and the validity was verified by the simulation.
