A Novel Narrowband Active Noise Control System with Significantly Reduced Computational Cost
In conventional narrowband ANC systems,each reference cosione or sine wave has to be filtered by an estimate of the secondary-path,This filtering element is called x-fillering block.The number of xfiltering blocks is proportional to q where q is the number of targeted frequencies.When q and/or order(M)of estimated FIR-type secondary-path are not small,the computational cost due to the x-filtering blicks may become a bottleneck in real system implementation.Here,we propose a new narrowband ANC blocks regardless of q.All the cosine waves(or sine waves)are combined as an input to a x-filtering block.The output of this block is decomposed by an efficient bandpass filter bank into filtered-x cosine or sine waves for the filtered-x LMS(FXLMS)algorithm that follows.This way,the computational cost can be significantly reduced.Exten-sive simulations reveal that the new system indicates performance similar to that of the conventional system,but enjoys great advantages in system inplementation.
Yegui Xiao Liying Ma Jinwei Sun
Prefectural University of Hiroshima,Hiroshima 734-8558,Japan Tokyo Polytechnic University,Atsugi 243-0297,Japan Harbin Institute of Technology,Harbin,China
国际会议
9th International Conference on Signal Processing(第九届国际信号处理学术会议)(ICSP08)
北京
英文
2008-10-26（万方平台首次上网日期，不代表论文的发表时间）