| Title |
Stable Active Noise Control Using Auto-Secondary Path Estimation Techniques |
| Authors |
남현도(Nam, Hyun-Do) ; 서성대(Seo, Sung-Dae) |
| Keywords |
Active noise control ; auto-secondary path estimation ; Multi-channel stabilized IIR filter ; IIR LMS |
| Abstract |
The adaptive IIR filters for active noise control systems are more effective when acoustic feedback exists, but the adaptive IIR filters could be unstable when the filter algorithm is not yet converged. In this paper, auto-secondary path estimation techniques and a stabilizing process for adaptive Multi-Channel Recursive LMS (MCRLMS) filters are developed to improve the stability of multi-channel active noise control systems. Experiments using a TMS320VC33 digital signal processor in a three dimensional enclosure have performed to show the effectiveness of the proposed algorithm. |