基于子带分解的自适应有源噪声控制算法

AANC Algorithms Based on Subband Decomposition

将子带分解技术应用于有源噪声控制。建立了相应的降噪模型 ,推导了基于子带分解的单道、多道算法。采用 DCT变换提供内插因子。该算法对有色噪声、宽带噪声具有良好的收敛性能。文中给出了与 FL MS和 FRL S算法对比的计算机模拟结果。

Adaptive subband decomposition technique is applied to AANC. The FLMS algorithms for both the single channel and multi channel algorithms based on the subband structure are derived. The corresponding interpolators are complemented by DCT. The proposed algorithms could provide the superior performance for both colored noise and broad band inputs. A comparison of the proposed algorithms with both FLMS and FRLS algorithms is given through computer simulations.