조화가진된 밀폐계에서의 능동소음제어

To obtain controllability, it is necessary to know the nodal line in acoustic sound field of the enclosure system. Therefore it is important to obtain transfer function of the system by secondary path modeling for FXLMS algorithm. In this study, the active noise control using FXLMS algorithm is performed in enclosure excited by single tone harmonic source. To obtain optimal sensor location, we obtain transfer function of acoustic field in enclosure excited by white noise source. The constant step size and filter coefficient are obtained in this experimental implementation