We have proposed a noise control system that the noise insulation panels with piezoelectric material arrange, and enable the transmitted noise through a target plate to reduce by suppressing the vibration of the noise insulation panels with a simple analog control circuit. In this paper, after the equivalent mechanical models for a number of the piezoelectric material are shown, a method for expansion a control frequency range is demonstrated as the performance advances of the noise control system. In the experimental results, it is verified that the noise transmitted through the noise control system reduced with range of frequency.
