Abstract
This paper presents a new method to improve the transmission loss of a rectangular panel using active vibration control. This study can be applied to the window of a house or an office for making quiet space. Generally it turns out that the capability of sound transmission is determined by the mass of the structure. Therefore, in order to intercept the sound transmission at low frequencies, the material with heavy mass should be used. To obtain a high performance of interruptive sound using a light weight material, the active vibration control of the material can be used to improve the transmission loss.
