Hybrid design of filtered-x adaptive algorithm via sampled-data control theory

Analysis and design of ltered-x adaptive algorithms are conventionally done by assuming that the transfer function in the secondary path is a discrete-time system. However, in real systems such as active noise control, the secondary path is a continuous-time system. Therefore, such a system should be analysed and designed as a hybrid system including discreteand continuous- time systems and AD/DA devices. In this article, we propose a hybrid design taking account of continuoustime behaviour of the secondary path via lifting (continuoustime polyphase decomposition) technique in sampled-data control theory.

• Type: Conference
• Year: 2008
• Where: ICASSP
• Authors: Masaaki Nagahara, Yutaka Yamamoto
• Keywords: Active Noise Control, ICASSP 2008, Ltered-x Adaptive Algorithms, Secondary Path, Signal Processing