| Title |
Nonlinearity Compensation in the Secondary Path of Active Noise Control Systems Using An Inverse Adaptive Volterra Filtering |
| Authors |
정인석(Jeong I.S.) ; 이인환(Lee I.H.) ; 남상원(Nam S.W.) |
| Keywords |
ANC ; FXLMS ; Nonlinear Secondary Path ; Adaptive Volterra Filtering |
| Abstract |
In active noise control (ANC) systems, the error-reduction performance of the conventional Filtered-X Least Mean Square (FXLMS) algorithm may be affected by nonlinear distortions in the secondary path such as in the power amplifiers, loudspeakers and transducers. In this paper, a nonlinear FXLMS algorithm with high error-reduction performance is proposed to compensate for undesirable nonlinearities in the secondary-path of ANC systems by employing the inverse Volterra filtering approach. In particular, the proposed approach is based on the utilization of the conventional P-th order inverse approach to nonlinearity compensation in the secondary path of ANC systems. Finally, the simulation results showed that the proposed approach yields a better nonlinearity compensation performance for the ANC systems with a nonlinear secondary path than the conventional FXLMS. |