Modelling of Acoustic Path in ANC

J. Poshtan, A. Mirbagheri, and H. Kahaei (Iran)


Active Noise Cancellation, System Identification, Secondary path.


In this paper, The necessity of a proper modeling of acoustic path for an Active Noise Cancellation (ANC) system, and the impact of modeling error on system performance is discussed. Firstly , a physical model is assumed for the acoustic path that can be used as reference for further modeling, and then with the aid of the data obtained from a laboratory enclosure, an appropriate transfer function is derived. At the effect of modeling error on noise reduction is explored.

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