用于分布式主动噪声控制的低复杂度DFxLMS算法  

Low complexity DFxLMS algorithm for distributed active noise control

作　　者：袁军[1] 李军[1] 袁财政 赵强[1] 孟祥胜 王巍[1] 李勤 Yuan Jun;Li Jun;Yuan Caizheng;Zhao Qiang;Meng Xiangsheng;Wang Wei;Li Qin2(Chongqing Key Laboratory of Microelectronics Engineering,Chongqing University of Post and Telecommunications,Chongqing 400065,China;Southwest Oil and Gas Field Gas Branch,Chongqing 401120,China)

机构地区：[1]重庆邮电大学微电子工程重庆市重点实验室,重庆400065 [2]西南油气田燃气分公司,重庆401120

出　　处：《国外电子测量技术》2022年第7期18-22,共5页Foreign Electronic Measurement Technology

基　　金：国家自然科学基金(61404019);重庆市科技局科技重大专项(cstc2018jszx-cyztzxX0054);重庆市科委集成电路产业类重大专项(cstc2018jszx-cyztzx0217)项目资助。

摘　　要：针对大范围降噪的传统多通道主动噪声控制(multi-channel active noise control, MANC)系统计算复杂、降噪性能差且缺乏可扩展性的问题,提出了一种基于扩散协作方法的低复杂度分布式主动噪声控制(distributed active noise control, DANC)系统。该DANC系统开发了一种扩散滤波x最小均方(diffusion filter-x least mean square, DFxLMS)算法。提出的DFxLMS-DANC方案使用次级路径约束,以减少计算开销。仿真结果表明,在4个节点的情况下与基于多误差FxLMS的MANC系统相比,所提出DFxLMS-DANC计算乘法和加法数量分别减少42%和4.6%,所提出的算法在实际的空调噪声环境下仍然可以达到更好的降噪性能。The traditional MANC system for large-scale noise reduction has the problems of complex calculation,poor noise reduction performance and lack of scalability.To solve these problems,this paper proposes a low-complexity DANC system based on the diffusion cooperative method.The DANC system developed a DFxLMS algorithm.The proposed DFxLMS-DANC scheme uses secondary path constraints to reduce computational overhead.Simulation results show that the proposed DFxLMS-DANC computes a 42%and 4.6%reduction in the number of multiplications and additions,respectively,compared to the multi-error FxLMS-based MANC system in the case of four nodes.It is also shown that the proposed algorithm can still achieve better noise reduction performance in the actual air-conditioning noise environment.

关 键 词：主动噪声控制 滤波x最小均方算法 多通道ANC 次级路径 

分 类 号：TN911.71[电子电信—通信与信息系统]