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