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- In this paper, experiments were conducted to validate the importance and necessity of modeling. The modeling was performed using 120Hz and 280Hz noise of KTX main interior noise frequency. After the modeling, In order to solve the system instability by the additional path that exists between the control speaker and the error microphone, the secondary path was estimated. Next, simulations were performed to verify the modeling's necessity and importance. Thought the simulation results, we confirmed that the system with the modeling is more effective for noise reduction than without the modeling.Key Words : Active noise control, KTX interior noise, Multiple-channel FXLMS algorithm, Modeling*   :   †,  :   E-mail : kslee@donga.ac.kr  : 2011 12 19  : 2012 10 4 1.     KTX            .              .       ,        , ,     [1-7].        .                 .       [8].         KTX , KTX    Test-bed               FXLMS(Filtered-X LMS)    .

A Study on the Modeling for Reducing High-Speed Train KTX's Interior Noise using Active Noise Control Technique