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Active Noise Cancellation for Ventilation Ducts Using a Pair of Loudspeakers by Sampled-Data Optimization

Yasuhide Kobayashi, Hisaya Fujioka
2008 Advances in Acoustics and Vibration  
We deal with the design of active noise control systems for ventilation ducts with a pair of loud-speakers based on sampled-data optimization, in order to improve our previous study with a single loudspeaker. The resultant controller requires lower computational complexity for the implementation, compared to the standard time-varying adaptive controllers, since it is time-invariant and the order is comparable. Moreover, the effect of Swinbanks' source is automatically recovered by the
more » ... ed by the optimization. The benefit of the proposed method is also confirmed from experimental results for a real house, where the achieved noise attenuation level is about twice as much as that of the single loudspeaker case.
doi:10.1155/2008/253948 fatcat:zgn7xafeenhzxl2f7uwtnxiinq