Parallel-form narrowband feedback active noise control (FBANC) system has been shown to perform better than conventional internal model control (IMC) based FBANC system in cancelling multi-tonal noise. A previous paper illustrated a novel approach in estimating the frequencies of the multi-tone noise, and using an internal tonal generator cum frequency grouping unit to increase its frequency separation in each channel of the parallel-form FBANC system based on a full-band error. This paper investigates whether it is necessary to use a narrowband error to further improve on the performance of the parallel-form narrowband FBANC through theoretical analysis. Computer simulations are also presented to validate its performance.

This paper was presented in APSIPA ASC 2014. For official version of the paper, please visit: http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=7041780&url=http%3...