A generalized leaky FxLMS algorithm for tuning the waterbed effect of feedback active noise control systems

A generalized leaky FxLMS algorithm for tuning the waterbed effect of feedback active noise control systems
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用于调整反馈主动噪声控制系统水床效应的广义泄漏 FxLMS 算法

DOI:
10.1016/j.ymssp.2017.12.021
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发表时间:
2018-06
影响因子:
8.4
通讯作者:
Yecai Guo
Yecai Guo
中科院分区:
工程技术1区
文献类型:
--
作者:
Lifu Wu;Xiaojun Qiu;Yecai Guo

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为了有效地调节反馈系统中由水床效应引起的噪声放大,本文提出了一种自适应算法,该算法用一个真实的对称Toeplitz矩阵来代替泄漏FxLMS算法中的标量泄漏因子。矩阵中的元素是根据噪声放大约束显式计算的,噪声放大约束是基于一种简单但有效的方法定义的。在ANC耳机应用中的仿真结果表明,与FxLMS算法和泄漏FxLMS算法相比,该算法能够更有效地调整噪声放大的频带。
To tune the noise amplification in the feedback system caused by the waterbed effect effectively, an adaptive algorithm is proposed in this paper by replacing the scalar leaky factor of the leaky FxLMS algorithm with a real symmetric Toeplitz matrix. The elements in the matrix are calculated explicitly according to the noise amplification constraints, which are defined based on a simple but efficient method. Simulations in an ANC headphone application demonstrate that the proposed algorithm can adjust the frequency band of noise amplification more effectively than the FxLMS algorithm and the leaky FxLMS algorithm.
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