一种稳健的窄带反馈型主动噪声控制系统
Robust narrowband feedback active noise control system
马亚平 1胡计昶 2吴定会 2毕勤胜 3路静4
作者信息
- 1. 江南大学物联网工程学院 无锡 214122;江苏大学 镇江 212013;无锡和烁丰科技股份有限公司 无锡 214142
- 2. 江南大学物联网工程学院 无锡 214122
- 3. 江苏大学 镇江 212013
- 4. 无锡和烁丰科技股份有限公司 无锡 214142
- 折叠
摘要
传统窄带反馈型主动噪声控制系统采用并型自适应滤波器结构,用于合成参考信号时,仍存在参考信号合成质量较差、滤波器权值的初值设置难度高、应对非平稳窄带噪声的能力不足等问题.为解决以上问题,通过引入高效的串并型自适应滤波器结构来合成参考信号,提出新型的窄带反馈型主动噪声控制系统,改善参考信号合成质量,进而提升系统的整体降噪性能.新型系统不仅有效解决了传统系统存在的参考信号合成质量较差的问题,还降低了滤波器权值的初值设置复杂度,同时还提升了系统应对非平稳窄带噪声的能力.实验结果表明,新型系统较传统系统的前后两部分的降噪量分别提升了 7.89 和 9.18 dB.仿真和实验结果共同验证了提出的系统较传统系统具有更强的稳健性和降噪性能.
Abstract
The traditional narrowband feedback active noise control(ANC)system uses the parallel adaptive filter to generate a reference signal.However,it still presents a poor quality of reference signal synthesis,high difficulty in setting the initial filter weights,and insufficient ability to suppress nonstationary narrowband noise.To solve the aforementioned problems,this article proposes a novel robust narrowband feedback ANC system where a cascaded-parallel adaptive filter is introduced to synthesize reference signal.In this way,the quality of reference signal synthesis is improved.In further,the overall noise reduction performance(NRP)is enhanced.The new system can not only solve the poor quality of reference signal synthesis in the traditional one but also reduce the complexity of the initial setting of filter weights and meanwhile improve the ability to cope with the non-stationarity of target noise.The experimental results show that the NRP of the new scheme is increased by 7.89 and 9.18 dB in the first half and second half respectively,as compared with the traditional one.Both simulated and experimental results show that the proposed system does present nice robustness and better NRP as compared with the traditional one.
关键词
反馈型主动噪声控制/自适应滤波器/窄带噪声/滤波-X最小均方算法/降噪性能Key words
feedback active noise control/adaptive filter/narrowband noise/filtered-X LMS algorithm/noise reduction performance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据