Frequency-domain adaptive filters have giane increased attaaction,because of their excellent onvergence beahivor and their computational effiicency.THey are very promisisng,especialy for real time applciatiosn such as active noise ocntorl (ANC) where a large number of coeffiicents have to be apapted.In this paper we presetn an adaptive feedforward controller,which alows the level of a periodic sound field tobe canceled by more than 20dB.
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