Experimental comparison of adaptive cancellation algorithms for active noise control

With the success of adaptive cancellation methods developed largely within the active noise control community, it is of interest to understand these algorithms within a more traditional feedback control framework. This paper thus has two goals, namely, to systematically describe three such algorithms (two LMS algorithms and the recently developed ARMARKOV/Toeplitz algorithm) in standard feedback control terminology, and to experimentally compare the performance of the algorithms. For experimental purposes, we use an acoustic duct testbed with both tonal and broadband disturbances.