A robust high-order lattice adaptive notch filter and its application to narrowband noise cancellation

作者：Kim Seong woo; Park Young cheol; Seo Young soo; Youn Dae Hee^*

来源：EURASIP Journal on Advances in Signal Processing, 2014, 2014(1): 137.

DOI：10.1186/1687-6180-2014-137

• Adaptive filter
• High-order lattice adaptive notch filter
• Adaptive line enhancement
• Narrowband adaptive noise cancellation

In this paper, we propose a high-order lattice adaptive notch filter (LANF) that can robustly track multiple sinusoids. Unlike the conventional cascade structure, the proposed high-order LANF has robust tracking characteristics regardless of the frequencies of reference sinusoids and initial notch frequencies. The proposed high-order LANF is applied to a narrowband adaptive noise cancellation (ANC) to mitigate the effect of the broadband disturbance in the reference signal. By utilizing the gradient adaptive lattice (GAL) ANC algorithm and approximately combining it with the proposed high-order LANF, a computationally efficient narrowband ANC system is obtained. Experimental results demonstrate the robustness of the proposed high-order LANF and the effectiveness of the obtained narrowband ANC system.

• 出版日期2014-9-1