This paper presents the active no systems for creating quiet zone to cover t headrests. The two-input two-output (TITO system based on the multiple-channel adaptive x least mean square (FXLMS) algorithm is pro reduce system cost of the TITO ANC hea combined-input combined-output (CICO) AN based on the single-channel adaptive f algorithm is developed. The performance of t headrest systems are evaluated using the exp The real-time experiment results show that headrest system achieves the satisfactory perfo I.

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