Exploring an Efficient Approach for Active Noise Control Systems with Online Secondary Path Modeling
In this paper, we explore a new approach for controlled injection of probe noise for secondary path modeling (SPM) in the feedforward active noise control (ANC) systems. The existing approaches employ a single adaptive FIR filter for SPM in ANC systems. In the proposed approach, a separate filter temporarily holds a replica of the tap-weights of the SPM filter. Furthermore, a cost function - on the basis of difference of error powers from the two filters - is evaluated for keeping or suspending the injection of the probe noise. If the acoustic characteristics are changed in the secondary path after suspending the injection, outliers in the error signal from the SPM filter are detected for restarting the injection. Numerical simulations show that the noise-reduction performance is improved by introducing the proposed approach for the ANC systems.
Akihisa OISHI Muhammad Tahir AKHTAR Wataru MITSUHASHI
Department of Communication Engineering and Informatics, The University of Electro-Communications,1- The Center for Frontier Science and Engineering (CFSE), The University of Electro-Communications, 1-
国际会议
2011亚太信号与信息处理协会年度峰会(APSIPAASC 2011)
西安
英文
1-9
2011-10-18（万方平台首次上网日期，不代表论文的发表时间）