摘要
运用三种常用的自适应ANC算法（FXLMS，FBFXLMS，FULMS），在一个以PC机为核心的前馈ANC实验系统上进行抗噪声实验。实验研究表明：这三种算法都能有效地衰减管道中的低频宽带噪声，其中FULMS比另两种算法具有更快的收敛速度。在次级声反馈对参考输入影响比较小的情况下，FBFXLMS算法的效果反而不如单纯的FXLMS算法。
In a feedforward ANC experimental system based on a PC an experiment is performed with three popular adaptive ANC algorithms FXLMS FBFXLMS and FULMS． The experimental result shows that these algorithms are all effective on reducing the low－frequency broadband noise in a duct and the FULMS algorithm converges more quickly than the others do． When the secondary noise feedback is trivial in the reference input the performance of the FBFXLMS algorithm might be inferior to that of FXLMS algorithm．
出处
《电声技术》
北大核心
2001年第5期17-21,共5页
Audio Engineering
基金
北京市教委资助科技项目!(99KJ44)
关键词
有源噪声控制
自适应控制
管道宽带噪声
active noise control adaptive control broadband noise in a duct
