ROBUST ACTIVE NOISE CONTROL IN A FINITE DUCT BY SEPARATION OF TRAVELLING WAVES

摘要

This paper presents a new active noise control (ANC) system for finite ducts. The new ANC uses wave separation to simplify path models for accurate on-line identification. This method avoids the destabilizing effects due to reflections and acoustic feedback in conventional ANC systems. Analysis and experimental results will be given to demonstrate the robustness and improvement of the proposed method over conventional ANC systems.