无需节点通信的降噪算法,兼顾高效与稳定
Self-Boosted Weight-Constrained FxLMS: A Robustness Distributed Active Noise Control Algorithm Without Internode Communication
- 各节点自主调整参数,避免通信依赖
- 在真实声学路径下实现良好降噪效果
- 适合资源受限的分布式降噪场景
相比需要大量计算资源的传统集中式多通道主动降噪(MCANC)算法,去中心化方法虽计算效率更高,但通常降噪性能较差。为提升性能,已有分布式ANC方法引入节点间信息交换,但通信延迟常影响系统稳定性。为此,本文提出一种无需节点间通信的自增强权重约束滤波参考最小均方(SB-WCFxLMS)算法。该算法专门缓解节点间串扰引起的发散问题。自增强策略使每个节点根据本地降噪表现独立调整约束参数,从而实现有效降噪而无需通信。该机制显著降低计算复杂度与通信开销。基于真实声学路径和压缩机噪声的数值仿真验证了所提系统的有效性与鲁棒性。结果表明,该方法在极低资源消耗下仍能实现满意的降噪性能。
原文摘要 · Abstract (English)
Compared to the conventional centralized multichannel active noise control (MCANC) algorithm, which requires substantial computational resources, decentralized approaches exhibit higher computational efficiency but typically result in inferior noise reduction performance. To enhance performance, distributed ANC methods have been introduced, enabling information exchange among ANC nodes; however, the resulting communication latency often compromises system stability. To overcome these limitations, we propose a self-boosted weight-constrained filtered-reference least mean square (SB-WCFxLMS) algorithm for the distributed MCANC system without internode communication. The WCFxLMS algorithm is specifically designed to mitigate divergence issues caused by the internode cross-talk effect. The self-boosted strategy lets each ANC node independently adapt its constraint parameters based on its local noise reduction performance, thus ensuring effective noise cancellation without the need for inter-node communication. With the assistance of this mechanism, this approach significantly reduces both computational complexity and communication overhead. Numerical simulations employing real acoustic paths and compressor noise validate the effectiveness and robustness of the proposed system. The results demonstrate that our proposed method achieves satisfactory noise cancellation performance with minimal resource requirements.
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