Virtual sensor based Feedback Active Noise Control for neonates in NICU

Veena, S.; Pavithra, S.; Lokesha, H.; Narasimhan, S. V.; More, Neha V.

doi:10.1109/c2spca.2013.6749425

Cited by 4 publications

(1 citation statement)

References 11 publications

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“…In the past few years, the research on active noise control (ANC) technology has received considerable attention as more and more applications have appeared [1][2][3][4][5], and several systems and algorithms have been proposed by various researchers [6][7][8][9][10][11][12]. The ANC technique can be used to effectively attenuate low-frequency acoustic noises for which the passive noise control (PNC) techniques [13] are either ineffective or increase the bulk and cost of entire systems.…”

Section: Introductionmentioning

confidence: 99%

A New Online Secondary Path Modeling Method with An Auxiliary Noise Power Scheduling Strategy for Narrowband Active Noise Control Systems

et al. 2017

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Abstract:In recent years, the online secondary path modeling (SPM) method with an auxiliary noise power scheduling strategy has been crucial for active noise control (ANC) systems and has also become a popular research topic. However, most scheduling strategies have been designed for broadband active noise control (BANC), and these ideas may not be directly applied to narrowband active noise control (NANC) systems due to the difference in structure between BANC and NANC systems. In this paper, a new online SPM method with auxiliary noise power scheduling is proposed. Here, the controlled system is adapted using the filtered-x weighted accumulated least mean square (FXWALMS) algorithm proposed by the authors. Moreover, the auxiliary noise power is scheduled based on the convergence status of the forgetting factor to accurately track the change in the NANC system. As a result, the proposed method not only achieves good modeling accuracy and fast convergence but also considerably increases noise attenuation. Extensive simulations are conducted to prove the superior performance of the proposed method in various scenarios.

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